/* ==========================================================================
   TAK Onboarding Platform - Professional Emergency Operations Center UI
   Government/Military Grade Interface for First Responders
   Agency Customizable Design System
   ========================================================================== */

/* ==========================================================================
   AGENCY CUSTOMIZATION SYSTEM
   Easy customization for different agencies, departments, and organizations
   Modify these variables to match your agency's branding requirements
   ========================================================================== */
:root {
  /* ================================
     AGENCY BRANDING - CUSTOMIZE THESE
     ================================ */
  
  /* Agency Primary Colors - Professional Command Authority */
  --agency-primary: #1e3a8a;           /* Deep Navy Blue - command presence */
  --agency-primary-light: #2563eb;     /* Action Blue - interactive elements */
  --agency-primary-dark: #1e40af;      /* Authority Blue - active states */
  
  /* Agency Secondary Colors - Tactical Steel */
  --agency-secondary: #075985;         /* Steel Blue - secondary actions */
  --agency-secondary-light: #0284c7;   /* Light Steel - hover states */
  --agency-secondary-dark: #0c4a6e;    /* Dark Steel - active states */
  
  /* Agency Accent Color - Operational Success */
  --agency-accent: #047857;            /* Forest Green - success/go states */
  --agency-accent-light: #059669;      /* Light Forest - highlights */
  --agency-accent-dark: #064e3b;       /* Dark Forest - active success */
  
  /* Agency Logo Configuration */
  --agency-logo-url: none;             /* Add: url('path/to/your/logo.svg') */
  --agency-logo-width: 2rem;           /* Logo width */
  --agency-logo-height: 2rem;          /* Logo height */
  --agency-show-logo: none;            /* Set to 'block' when logo is provided */
  --agency-hide-title-icon: block;     /* Set to 'none' when logo is provided */
  
  /* Agency Typography - Customize fonts */
  --agency-font-primary: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --agency-font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
  
  /* Agency Name - Customize organization name */
  --agency-name: 'TAK Onboarding Platform';
  --agency-subtitle: 'Generate configuration QR codes for rapid TAK client deployment';
  
  /* ================================
     PROFESSIONAL COLOR SYSTEM
     Based on Emergency Operations Centers
     ================================ */
  
  /* Core Agency Colors (mapped from customization above) */
  --color-primary: var(--agency-primary);
  --color-primary-light: var(--agency-primary-light);
  --color-primary-dark: var(--agency-primary-dark);
  --color-primary-hover: var(--agency-primary-light);
  
  --color-accent: var(--agency-secondary);
  --color-accent-light: var(--agency-secondary-light);
  --color-accent-dark: var(--agency-secondary-dark);
  --color-accent-hover: var(--agency-secondary-light);
  
  /* Emergency Status Colors - Professional Emergency Services Palette */
  --color-success: var(--agency-accent);        /* Success states - operations normal */
  --color-warning: #d97706;                     /* Warning states - attention required */
  --color-error: #dc2626;                       /* Error states - immediate attention */
  --color-critical: #991b1b;                    /* Critical states - emergency response */
  --color-info: var(--color-accent-light);      /* Information states */
  
  /* Professional Comfortable Neutral System */
  --color-background: #f1f5f9;                  /* Soft light background - comfortable visibility */
  --color-background-secondary: #e2e8f0;        /* Secondary background - gentle contrast */
  --color-surface: #f8fafc;                     /* Primary surfaces - comfortable brightness */
  --color-surface-elevated: #cbd5e1;            /* Elevated surfaces - defined depth */
  --color-surface-hover: #e2e8f0;               /* Hover surface states - subtle feedback */
  --color-surface-dark: var(--color-primary);   /* Dark surfaces for contrast */
  
  /* Professional High-Contrast Typography */
  --color-text-primary: #0f172a;                /* Maximum contrast - critical readability */
  --color-text-secondary: #334155;              /* High contrast - secondary information */
  --color-text-tertiary: #64748b;               /* Medium contrast - hint text */
  --color-text-inverse: #f8fafc;                /* Light text on dark backgrounds */
  --color-text-disabled: #94a3b8;               /* Disabled state text */
  
  /* Professional Border System */
  --color-border: #d1d5db;                      /* Standard borders - gentle definition */
  --color-border-hover: #9ca3af;                /* Interactive hover borders */
  --color-border-focus: var(--color-accent);    /* Focus indication - accessibility */
  --color-border-error: var(--color-error);     /* Error state borders */
  --color-border-success: var(--color-success); /* Success state borders */
  
  /* Professional Shadows - Emergency Operations Depth System */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.15);           /* Minimal depth */
  --shadow-sm: 0 2px 4px 0 rgb(0 0 0 / 0.2);            /* Subtle elevation */
  --shadow-md: 0 4px 8px -2px rgb(0 0 0 / 0.25);        /* Standard elevation */
  --shadow-lg: 0 8px 16px -4px rgb(0 0 0 / 0.3);        /* High elevation */
  --shadow-xl: 0 16px 32px -8px rgb(0 0 0 / 0.35);      /* Maximum elevation */
  --shadow-focus: 0 0 0 3px rgb(29 78 216 / 0.25);      /* Accessibility focus */
  --shadow-focus-error: 0 0 0 3px rgb(220 38 38 / 0.25);/* Error focus */
  --shadow-inset: inset 0 1px 2px 0 rgb(0 0 0 / 0.1);   /* Inset depth */
  
  /* Professional Backdrop Effects */
  --backdrop-blur: blur(8px);                            /* Professional blur effect */
  --backdrop-opacity: rgba(15, 23, 42, 0.8);            /* Professional overlay */
  
  /* Emergency Operations Spacing System - Large Touch Targets */
  --spacing-xs: 0.25rem;     /* 4px - minimal spacing */
  --spacing-sm: 0.5rem;      /* 8px - small spacing */
  --spacing-md: 0.75rem;     /* 12px - medium spacing */
  --spacing-lg: 1rem;        /* 16px - standard spacing */
  --spacing-xl: 1.5rem;      /* 24px - large spacing */
  --spacing-2xl: 2rem;       /* 32px - extra large spacing */
  --spacing-3xl: 2.5rem;     /* 40px - section spacing */
  --spacing-4xl: 3rem;       /* 48px - major section spacing */
  --spacing-5xl: 4rem;       /* 64px - page section spacing */
  
  /* Professional Typography System - High Visibility */
  --font-family-base: var(--agency-font-primary);
  --font-family-mono: var(--agency-font-mono);
  --font-family-display: var(--agency-font-primary);
  
  /* Type Scale - Emergency Operations Hierarchy */
  --font-size-xs: 0.75rem;      /* 12px - fine print */
  --font-size-sm: 0.875rem;     /* 14px - secondary text */
  --font-size-base: 1rem;       /* 16px - body text */
  --font-size-md: 1.125rem;     /* 18px - large body */
  --font-size-lg: 1.25rem;      /* 20px - small headings */
  --font-size-xl: 1.375rem;     /* 22px - medium headings */
  --font-size-2xl: 1.5rem;      /* 24px - large headings */
  --font-size-3xl: 1.875rem;    /* 30px - display headings */
  --font-size-4xl: 2.25rem;     /* 36px - large display */
  
  /* Line Heights - Optimal Readability */
  --line-height-tight: 1.25;    /* Tight spacing for headings */
  --line-height-base: 1.5;      /* Standard spacing for body */
  --line-height-relaxed: 1.625; /* Relaxed spacing for long text */
  
  /* Font Weights - Professional Hierarchy */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;
  
  /* Border Radius - Minimal Professional Aesthetic */
  --radius-none: 0;
  --radius-sm: 0.125rem;         /* 2px - minimal radius */
  --radius-md: 0.375rem;         /* 6px - standard radius */
  --radius-lg: 0.5rem;           /* 8px - large radius */
  --radius-xl: 0.75rem;          /* 12px - extra large radius */
  --radius-2xl: 1rem;            /* 16px - maximum radius */
  --radius-full: 9999px;         /* Full circle/pill */
  
  /* Professional Animation System - Subtle and Fast */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);      /* Fast interactions */
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);      /* Standard interactions */
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);      /* Slower transitions */
  --transition-bounce: 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55); /* Subtle bounce */
  
  /* Z-Index System - Emergency Operations Layer Management */
  --z-base: 0;                   /* Base layer */
  --z-dropdown: 100;             /* Dropdown menus */
  --z-sticky: 200;               /* Sticky elements */
  --z-fixed: 300;                /* Fixed positioning */
  --z-modal: 400;                /* Modal dialogs */
  --z-popover: 450;              /* Popover elements */
  --z-tooltip: 500;              /* Tooltips */
  --z-notification: 600;         /* Notifications */
  --z-emergency: 1000;           /* Emergency overlays */
  
  /* Emergency Operations Layout System - Tactical Interfaces */
  --container-max-width: 1400px;         /* Wide layout for information density */
  --container-padding: var(--spacing-lg); /* Standard container padding */
  
  /* Header System - Professional Balanced */
  --header-height: 3rem;                 /* Professional header - 48px */
  --header-height-compact: 2.25rem;      /* Compact auto-hide - 36px */
  --header-padding: var(--spacing-lg);   /* Professional header padding */
  
  /* Interactive Element Dimensions - Tactical Touch Targets */
  --button-height: 3rem;                 /* 48px - tactical glove accessible */
  --button-height-sm: 2.75rem;           /* 44px - minimum touch target */
  --button-height-lg: 4rem;              /* 64px - primary actions */
  --input-height: var(--button-height);  /* Consistent form heights */
  --tab-height: 4rem;                    /* 64px - large tactical tabs */
  
  /* QR Code System - Perfect Professional Squares */
  --qr-size: min(320px, 80vw);           /* Responsive QR container size */
  --qr-size-mobile: min(280px, 75vw);    /* Mobile QR container size */
  --qr-size-landscape: min(40vh, 280px); /* Landscape QR container size */
  --qr-border-width: 2px;                /* QR container border width */
  --qr-padding: var(--spacing-xl);       /* QR container internal padding */
}

/* Generic hidden attribute support to ensure author styles don't override it */
[hidden] {
  display: none !important;
}

/* ==========================================================================
   PROFESSIONAL NIGHT OPERATIONS THEME
   Dark mode optimized for 24/7 emergency operations centers
   Low-light tactical environments and extended use scenarios
   ========================================================================== */
[data-theme="dark"] {
  /* Agency Colors - Professional Night Operations */
  --color-primary: #3b82f6;            /* Professional Blue - enhanced visibility */
  --color-primary-light: #60a5fa;      /* Light Blue - interactive states */
  --color-primary-dark: #2563eb;       /* Dark Blue - active states */
  --color-primary-hover: #60a5fa;      /* Consistent hover state */
  
  --color-accent: #10b981;             /* Success Green - night visibility */
  --color-accent-light: #34d399;       /* Light Green - highlights */
  --color-accent-dark: #047857;        /* Dark Green - active states */
  --color-accent-hover: #34d399;       /* Consistent hover state */
  
  /* Night Operations Status Colors */
  --color-success: #10b981;                     /* Enhanced visibility green */
  --color-warning: #f59e0b;                     /* High contrast amber */
  --color-error: #ef4444;                       /* Clear emergency red */
  --color-critical: #dc2626;                    /* Critical alert red */
  --color-info: #60a5fa;                        /* Information blue */
  
  /* Night Operations High-Contrast Surfaces */
  --color-background: #0f172a;                  /* Deep tactical background */
  --color-background-secondary: #1e293b;        /* Secondary dark background */
  --color-surface: #1e293b;                     /* Primary dark surfaces */
  --color-surface-elevated: #334155;            /* Elevated surfaces with contrast */
  --color-surface-hover: #374151;               /* Hover surface states */
  --color-surface-dark: #0f172a;                /* Darkest surfaces */
  
  /* Night Operations High-Contrast Typography */
  --color-text-primary: #f1f5f9;                /* Maximum contrast light text */
  --color-text-secondary: #cbd5e1;              /* High contrast secondary */
  --color-text-tertiary: #94a3b8;               /* Medium contrast hints */
  --color-text-inverse: #0f172a;                /* Dark text for light backgrounds */
  --color-text-disabled: #64748b;               /* Disabled state text */
  
  /* Night Operations Professional Borders */
  --color-border: #475569;                      /* Standard dark borders */
  --color-border-hover: #64748b;                /* Interactive hover borders */
  --color-border-focus: var(--color-accent);    /* Focus indication */
  --color-border-error: var(--color-error);     /* Error state borders */
  --color-border-success: var(--color-success); /* Success state borders */
  
  /* Night Operations Enhanced Shadows - Better Depth Perception */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-sm: 0 2px 4px 0 rgb(0 0 0 / 0.4);
  --shadow-md: 0 4px 8px -2px rgb(0 0 0 / 0.5);
  --shadow-lg: 0 8px 16px -4px rgb(0 0 0 / 0.6);
  --shadow-xl: 0 16px 32px -8px rgb(0 0 0 / 0.7);
  --shadow-focus: 0 0 0 3px rgb(96 165 250 / 0.4);
  --shadow-focus-error: 0 0 0 3px rgb(239 68 68 / 0.4);
  --shadow-inset: inset 0 1px 2px 0 rgb(0 0 0 / 0.3);
  
  /* Night Operations Backdrop Effects */
  --backdrop-opacity: rgba(15, 23, 42, 0.9);    /* Stronger overlay for dark mode */
}

/* ==========================================================================
   PROFESSIONAL BASE FOUNDATION
   Clean, accessible foundation for emergency operations interfaces
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

*:before,
*:after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background: var(--color-background);
  min-height: 100vh;
}

/* ==========================================================================
   PROFESSIONAL TYPOGRAPHY SYSTEM
   High-contrast, accessible typography for critical information display
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin: 0;
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
  color: var(--color-text-secondary);
  margin: 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* Professional Typography Utilities */
.text-transform-none { text-transform: none !important; }
.font-mono { font-family: var(--font-family-mono) !important; }
.font-display { font-family: var(--font-family-display) !important; }
.text-balance { text-wrap: balance; }
.text-pretty { text-wrap: pretty; }

/* ==========================================================================
   PROFESSIONAL LAYOUT SYSTEM
   Consistent, accessible layout components for tactical interfaces
   ========================================================================== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  width: 100%;
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--color-background);
  position: relative;
}

/* ==========================================================================
   PROFESSIONAL HEADER SYSTEM
   Compact, auto-hide header for emergency operations interfaces
   40% more compact than standard headers with intelligent auto-hide
========================================================================== */
.header {
  background: var(--color-surface);
  backdrop-filter: var(--backdrop-blur);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  height: var(--header-height);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  transition: transform var(--transition-base), height var(--transition-base), box-shadow var(--transition-base);
  will-change: transform, height;
}

/* Auto-hide states */
.header.header-hidden {
  transform: translateY(-100%);
  box-shadow: none;
}

.header.header-compact {
  height: var(--header-height-compact);
  box-shadow: var(--shadow-sm);
}

.header.header-compact .header-main .subtitle {
  display: none;
}

.header.header-compact .header-main .title {
  font-size: var(--font-size-lg);
}

.header.header-compact .agency-logo {
  width: 1.5rem;
  height: 1.5rem;
}

/* Header content layout */
.header-content {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--header-padding);
  max-width: var(--container-max-width);
  margin: 0 auto;
  flex-wrap: nowrap; /* keep actions inline with title */
}

.header-main {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-width: 0;
  flex: 1;
  overflow: hidden;
}

/* Agency Logo System */
.agency-logo {
  display: var(--agency-show-logo);
  width: var(--agency-logo-width);
  height: var(--agency-logo-height);
  background-image: var(--agency-logo-url);
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

/* Professional Title System - Ultra-Compact */
.header-main .title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.header-main .subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin: 0;
  margin-left: var(--spacing-xs);
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  opacity: 0.8;
  transition: opacity var(--transition-fast);
  display: none; /* Hide subtitle in main header for cleaner look */
}

.title-icon {
  display: var(--agency-hide-title-icon);
  font-size: 1.5rem;
  flex-shrink: 0;
  opacity: 1;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  flex-shrink: 0;
  flex-wrap: nowrap; /* avoid wrapping out of the title bar */
}

/* ================================
   PROFESSIONAL HEADER CONTROLS
   Emergency operations center style interactive elements
   ================================ */

/* Theme Toggle - Professional Dark/Light Mode Control */
.theme-toggle {
  background: var(--color-surface-elevated);
  border: 2px solid var(--color-border);
  width: var(--button-height-sm);
  height: var(--button-height-sm);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.theme-toggle::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-accent);
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: -1;
}

.theme-toggle:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.theme-toggle:hover::before {
  opacity: 0.1;
}

.theme-toggle:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-focus);
}

.theme-toggle:active {
  transform: translateY(0);
  box-shadow: var(--shadow-inset);
}

.theme-icon {
  width: 1.125rem;
  height: 1.125rem;
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

/* Ensure dark mode icon is visible */
[data-theme="dark"] .theme-icon-dark {
  color: var(--color-text-primary) !important;
  display: block !important;
}

/* Ensure light mode icon is visible */
[data-theme="light"] .theme-icon-light,
:root:not([data-theme="dark"]) .theme-icon-light {
  color: var(--color-text-primary) !important;
  display: block !important;
}

.theme-toggle:hover .theme-icon {
  color: var(--color-text-primary);
  transform: scale(1.1);
}

/* Theme icon visibility management */
[data-theme="dark"] .theme-icon-light {
  display: none;
}

[data-theme="light"] .theme-icon-dark,
:root .theme-icon-dark {
  display: none;
}

/* External Link - Professional GitHub Integration */
.github-link {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  width: var(--button-height-sm);
  height: var(--button-height-sm);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.github-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-text-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: -1;
}

.github-link:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.github-link:hover::before {
  opacity: 0.05;
}

.github-link:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-focus);
}

.github-link:active {
  transform: translateY(0);
  box-shadow: var(--shadow-inset);
}

.github-icon {
  width: 1.125rem;
  height: 1.125rem;
  transition: transform var(--transition-fast);
}

.github-link:hover .github-icon {
  transform: scale(1.1) rotate(-5deg);
}

/* Offline indicator - subtle but visible pill */
.offline-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: #7f1d1d; /* dark red */
  color: #fee2e2;
  border: 2px solid #dc2626;
  border-radius: var(--radius-full);
  padding: 0 var(--spacing-md);
  height: var(--button-height-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  box-shadow: var(--shadow-sm);
}

.offline-indicator .badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.25);
}

/* Help Button - Emergency Operations Primary Action */
.help-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  min-height: 2.75rem;  /* 44px - minimum touch target */
  padding: 0 var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  position: relative;
  overflow: hidden;
}

.help-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.help-btn:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.help-btn:hover::before {
  left: 100%;
}

.help-btn:focus {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.help-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-inset);
}

.help-icon {
  font-size: var(--font-size-sm);
  transition: transform var(--transition-fast);
}

.help-btn:hover .help-icon {
  transform: scale(1.1);
}

.help-text {
  display: none;
}

/* Responsive help button text */
@media (min-width: 640px) {
  .help-text {
    display: inline;
  }
  
  .help-icon {
    display: none;
  }
}

/* ==========================================================================
   PROFESSIONAL MAIN CONTENT SYSTEM
   Responsive main content area with intelligent header compensation
   ========================================================================== */
.main {
  flex: 1;
  padding-top: calc(var(--header-height) + var(--spacing-xl));
  padding-bottom: var(--spacing-xl);
  min-height: calc(100vh - var(--header-height));
  transition: padding-top var(--transition-base);
  position: relative;
}

/* Dynamic header compensation */
.header-compact ~ .main {
  padding-top: calc(var(--header-height-compact) + var(--spacing-xl));
}

.header-hidden ~ .main {
  padding-top: var(--spacing-xl);
}

/* Main content container */
.main-content {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ==========================================================================
   PROFESSIONAL NAVIGATION SYSTEM
   Console-style tabs for emergency operations interfaces
   ========================================================================== */
.tabs {
  display: flex;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  margin-bottom: 0;
  overflow-x: auto;
  overflow-y: visible;
  padding: var(--spacing-xs);
  box-shadow: var(--shadow-md);
  position: relative;
  backdrop-filter: var(--backdrop-blur);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.tabs::-webkit-scrollbar {
  height: 4px;
}

.tabs::-webkit-scrollbar-track {
  background: transparent;
}

.tabs::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

.tabs::-webkit-scrollbar-thumb:hover {
  background: var(--color-border-hover);
}

.tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-text-secondary);
  height: var(--tab-height);
  padding: 0 var(--spacing-xl);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  white-space: nowrap;
  min-width: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  position: relative;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  overflow: hidden;
}

.tab-btn::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background: var(--color-accent);
  transition: transform var(--transition-fast);
}

.tab-btn:hover:not(.active) {
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
  border-color: var(--color-border);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.tab-btn:hover:not(.active)::before {
  transform: translateX(-50%) scaleX(0.5);
}

.tab-btn.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.tab-btn.active::before {
  transform: translateX(-50%) scaleX(1);
  background: var(--color-text-inverse);
}

.tab-btn:focus {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.tab-btn:focus:not(.active) {
  border-color: var(--color-border-focus);
}

.tab-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-inset);
}

/* ==========================================================================
   PROFESSIONAL TAB CONTENT SYSTEM
   Consistent, accessible content panels for all operations
   ========================================================================== */
.tab-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  min-height: 600px;
  box-shadow: var(--shadow-md);
  position: relative;
  backdrop-filter: var(--backdrop-blur);
}

.tab-pane {
  display: none;
  padding: var(--spacing-2xl);
  min-height: 560px;
  animation: fadeIn var(--transition-base) ease-out;
}

.tab-pane.active {
  display: block;
}

/* Smooth fade-in animation for tab content */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   TAK CONFIGURATION LAYOUT SYSTEM
   Professional two-column layout with responsive breakpoints
   ========================================================================== */
.tak-config-container {
  display: grid;
  grid-template-columns: 1fr var(--qr-size);
  gap: var(--spacing-2xl);
  align-items: start;
}

@media (max-width: 1200px) {
  .tak-config-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 768px) {
  .tak-config-container {
    gap: var(--spacing-lg);
  }
}

/* Configuration Panel - Professional Form Container */
.config-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast);
}

.config-panel:hover {
  box-shadow: var(--shadow-md);
}

.config-header {
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.config-header h2 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.config-description {
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   PLATFORM SELECTOR SYSTEM
   Professional toggle system for ATAK/iTAK selection
   ========================================================================== */
.platform-selector {
  margin-bottom: var(--spacing-2xl);
  padding: var(--spacing-xl);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-fast);
}

.platform-selector:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-border-hover);
}

.tak-mode-toggle {
  display: flex;
  background: var(--color-background);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-inset);
}

.tak-mode-toggle input {
  display: none;
}

.tak-mode-toggle label {
  flex: 1;
  padding: var(--spacing-lg);
  text-align: center;
  cursor: pointer;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  min-height: 3rem;
  transition: all var(--transition-fast);
  position: relative;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  font-size: var(--font-size-sm);
}

.tak-mode-toggle label:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
}

.tak-mode-toggle input:checked + label {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.platform-icon {
  font-size: var(--font-size-lg);
  transition: transform var(--transition-fast);
}

.tak-mode-toggle input:checked + label .platform-icon {
  transform: scale(1.1);
}

.platform-info {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-inset);
}

.platform-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  font-style: italic;
  margin: 0;
}

/* ==========================================================================
   PROFESSIONAL FORM SYSTEM
   Large, accessible input fields for emergency operations
   ========================================================================== */
.form-section,
.form-section-compact {
  margin-bottom: var(--spacing-2xl);
}

.form-section:last-child,
.form-section-compact:last-child {
  margin-bottom: 0;
}

.section-label {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.section-icon {
  font-size: var(--font-size-xl);
  opacity: 0.8;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-xl);
  align-items: start;
}

.form-group {
  margin-bottom: var(--spacing-xl);
  display: flex;
  flex-direction: column;
}

.form-group-full {
  grid-column: 1 / -1;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-base);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  font-size: var(--font-size-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  height: var(--input-height);
  padding: 0 var(--spacing-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  background: var(--color-surface);
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-inset);
}

.form-group textarea {
  height: auto;
  min-height: 100px;
  padding: var(--spacing-lg);
  resize: vertical;
  line-height: var(--line-height-relaxed);
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-focus);
  transform: translateY(-2px);
}

.form-group input:invalid,
.form-group select:invalid,
.form-group textarea:invalid {
  border-color: var(--color-border-error);
}

.form-group input:invalid:focus,
.form-group select:invalid:focus,
.form-group textarea:invalid:focus {
  box-shadow: var(--shadow-focus-error);
}

/* ================================
   REAL-TIME VALIDATION STATES
   ================================ */

/* Valid Field State */
.form-group input.field-valid,
.form-group select.field-valid,
.form-group textarea.field-valid {
  border-color: var(--color-success);
  background-color: var(--color-success-bg);
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.1);
}

.form-group input.field-valid:focus,
.form-group select.field-valid:focus,
.form-group textarea.field-valid:focus {
  border-color: var(--color-success);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

/* Invalid Field State */
.form-group input.field-invalid,
.form-group select.field-invalid,
.form-group textarea.field-invalid {
  border-color: var(--color-error);
  background-color: var(--color-error-bg);
  box-shadow: 0 0 0 2px rgba(220, 38, 38, 0.1);
}

.form-group input.field-invalid:focus,
.form-group select.field-invalid:focus,
.form-group textarea.field-invalid:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.2);
}

/* Required Field Indicators */
.form-group label.field-required::after {
  content: ' *';
  color: var(--color-error);
  font-weight: 600;
}

/* Optional Field Indicators */
.form-group label.field-optional::after {
  content: ' (optional)';
  color: var(--color-text-secondary);
  font-weight: 400;
  font-size: var(--font-size-sm);
}

/* Validation Status Icons */
.form-group.has-validation {
  position: relative;
}

.form-group.has-validation::after {
  content: '';
  position: absolute;
  right: 0.75rem;
  top: 2.2rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
}

.form-group.field-valid.has-validation::after {
  content: '✓';
  background-color: var(--color-success);
  color: white;
}

.form-group.field-invalid.has-validation::after {
  content: '!';
  background-color: var(--color-error);
  color: white;
}

.help-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-top: var(--spacing-sm);
  line-height: var(--line-height-base);
  font-style: italic;
}

/* ==========================================================================
   PROFESSIONAL FORM OPTIONS SYSTEM
   Enhanced checkboxes and radio buttons for emergency operations
   ========================================================================== */
.form-options {
  margin-top: var(--spacing-xl);
}

.option-toggle {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  cursor: pointer;
  padding: var(--spacing-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-elevated);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.option-toggle::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-accent);
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 0;
}

.option-toggle:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.option-toggle:hover::before {
  opacity: 0.05;
}

.option-toggle input[type="checkbox"],
.option-toggle input[type="radio"] {
  margin: 0;
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  cursor: pointer;
  accent-color: var(--color-accent);
}

.option-label {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  position: relative;
  z-index: 1;
  flex: 1;
}

.option-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-sm);
  line-height: var(--line-height-base);
  font-style: italic;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   PROFESSIONAL ALERT SYSTEM
   Emergency operations center style notices and alerts
   ========================================================================== */
.security-notice,
.info-notice,
.warning-notice,
.success-notice {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  margin-top: var(--spacing-xl);
  border-width: 2px;
  border-style: solid;
  font-weight: var(--font-weight-medium);
  box-shadow: var(--shadow-md);
  position: relative;
  backdrop-filter: var(--backdrop-blur);
}

/* Light theme notice colors */
.security-notice {
  background: #fef2f2;
  border-color: var(--color-error);
  color: var(--color-critical);
}

.info-notice {
  background: #eff6ff;
  border-color: var(--color-accent);
  color: var(--color-accent-dark);
}

.warning-notice {
  background: #fffbeb;
  border-color: var(--color-warning);
  color: #92400e;
}

.success-notice {
  background: #ecfdf5;
  border-color: var(--color-success);
  color: #065f46;
}

/* Dark theme notice colors */
[data-theme="dark"] .security-notice {
  background: #450a0a;
  border-color: var(--color-error);
  color: #fecaca;
}

[data-theme="dark"] .info-notice {
  background: #172554;
  border-color: var(--color-accent);
  color: #dbeafe;
}

[data-theme="dark"] .warning-notice {
  background: #451a03;
  border-color: var(--color-warning);
  color: #fed7aa;
}

[data-theme="dark"] .success-notice {
  background: #064e3b;
  border-color: var(--color-success);
  color: #a7f3d0;
}

/* Enrollment Warning Box - Works in both light and dark themes */
.enrollment-warning {
  margin: 2rem 1rem 1rem 1rem;
  padding: 1rem;
  background: #fef3c7;
  border-left: 4px solid #dc2626;
  border-radius: 0.375rem;
}

.enrollment-warning .warning-content {
  display: flex;
  gap: 0.75rem;
}

.enrollment-warning .warning-icon {
  font-size: 1.5rem;
}

.enrollment-warning .warning-body {
  flex: 1;
}

.enrollment-warning .warning-title {
  color: #000;
  display: block;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.enrollment-warning .warning-details {
  margin: 0.25rem 0 0.5rem 0;
  color: #000;
  font-size: 0.95rem;
}

.enrollment-warning .warning-details p {
  margin: 0 0 0.5rem 0;
}

.enrollment-warning .error-message {
  color: #dc2626;
}

.enrollment-warning .warning-solution {
  font-size: 0.95rem;
  color: #000;
  padding-top: 0.5rem;
  border-top: 1px solid #dc2626;
}

.enrollment-warning .warning-link {
  color: #0066cc;
  font-weight: 600;
  text-decoration: underline;
}

/* Dark theme enrollment warning */
[data-theme="dark"] .enrollment-warning {
  background: #451a03;
  border-left-color: #f59e0b;
}

[data-theme="dark"] .enrollment-warning .warning-title {
  color: #fed7aa;
}

[data-theme="dark"] .enrollment-warning .warning-details {
  color: #fbbf24;
}

[data-theme="dark"] .enrollment-warning .error-message {
  color: #fca5a5;
}

[data-theme="dark"] .enrollment-warning .warning-solution {
  color: #fed7aa;
  border-top-color: #f59e0b;
}

[data-theme="dark"] .enrollment-warning .warning-link {
  color: #60a5fa;
}

.notice-icon {
  font-size: var(--font-size-2xl);
  flex-shrink: 0;
  margin-top: var(--spacing-xs);
  opacity: 0.9;
}

.notice-content {
  flex: 1;
  min-width: 0;
}

.notice-content strong {
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: var(--spacing-xs);
}

/* ==========================================================================
   PROFESSIONAL QR CODE SYSTEM
   Perfect squares, consistent sizing, professional presentation
   Critical requirement: All QR containers must be perfectly square
   ========================================================================== */
.qr-panel {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  position: sticky;
  top: calc(var(--header-height) + var(--spacing-lg));
  transition: all var(--transition-fast);
}

.qr-panel:hover {
  box-shadow: var(--shadow-xl);
  border-color: var(--color-border-hover);
}

.qr-header {
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--color-border);
  text-align: center;
}

.qr-header h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
}

.qr-header h3::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background: var(--color-accent);
}

.qr-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin: 0;
  font-style: italic;
}

/* CRITICAL: Perfect Square QR Container System */
.qr-container {
  /* Perfect square dimensions - CRITICAL REQUIREMENT */
  width: var(--qr-size);
  height: var(--qr-size);
  max-width: 100%;
  aspect-ratio: 1 / 1; /* Ensures perfect square always */
  
  /* Layout and positioning */
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-2xl) auto;
  
  /* Professional appearance */
  background: var(--color-background);
  border: var(--qr-border-width) solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-inset);
  
  /* Interactive states */
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.qr-container::before {
  content: '';
  position: absolute;
  top: var(--qr-border-width);
  left: var(--qr-border-width);
  right: var(--qr-border-width);
  bottom: var(--qr-border-width);
  border: 2px dashed var(--color-border);
  border-radius: calc(var(--radius-lg) - var(--qr-border-width));
  opacity: 0.5;
  transition: opacity var(--transition-fast);
}

.qr-container:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.qr-container:hover::before {
  opacity: 0.8;
}

/* QR container with generated QR code */
.qr-container.has-qr {
  border: var(--qr-border-width) solid var(--color-accent);
  box-shadow: var(--shadow-md);
  background: var(--color-surface);
}

.qr-container.has-qr::before {
  display: none;
}

.qr-container.has-qr:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-hover);
}

/* Mobile responsive QR containers */
@media (max-width: 768px) {
  .qr-container {
    width: var(--qr-size-mobile);
    height: var(--qr-size-mobile);
  }
  
  /* Improve form spacing on mobile */
  .form-section,
  .form-section-compact {
    margin-bottom: var(--spacing-xl);
  }
  
  .form-row {
    gap: var(--spacing-lg);
  }
  
  .config-panel {
    padding: var(--spacing-xl);
  }
}

/* Landscape mobile optimization */
@media (max-width: 844px) and (orientation: landscape) {
  .qr-container {
    width: var(--qr-size-landscape);
    height: var(--qr-size-landscape);
  }
}

/* Sticky back-to-top button for mobile */
@media (max-width: 768px) {
  #back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: 100;
    box-shadow: var(--shadow-lg);
    min-width: 3rem;
    min-height: 3rem;
  }
}

/* Small mobile screens */
@media (max-width: 390px) {
  .form-section,
  .form-section-compact {
    margin-bottom: var(--spacing-lg);
  }
  
  .config-panel {
    padding: var(--spacing-lg);
  }
  
  /* Optimize tabs for small screens */
  .tabs {
    padding: var(--spacing-xs);
    position: relative;
  }
  
  .tab-btn {
    min-width: 100px;
    padding: 0 var(--spacing-lg);
    font-size: 0.75rem;
  }
  
  /* Add scroll indicators */
  .tabs::after {
    content: '›';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(to right, transparent, var(--color-surface) 20%);
    padding: 0 var(--spacing-md);
    font-size: 1.5rem;
    color: var(--color-text-secondary);
    pointer-events: none;
    opacity: 0.8;
  }
  
  .tabs.scrolled-end::after {
    display: none;
  }
}

/* QR code image styling */
.qr-container img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  border-radius: calc(var(--radius-lg) - var(--spacing-sm));
  transition: transform var(--transition-fast);
}

.qr-container:hover img {
  transform: scale(1.02);
}

.qr-placeholder {
  text-align: center;
  color: var(--color-text-tertiary);
  padding: var(--qr-padding);
  max-width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.placeholder-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  display: block;
  opacity: 0.4;
  transition: all var(--transition-fast);
}

.qr-container:hover .placeholder-icon {
  opacity: 0.7;
  transform: scale(1.1);
}

.placeholder-text {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: var(--line-height-tight);
  max-width: 200px;
  text-align: center;
  opacity: 0.8;
}

.qr-actions {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

@media (max-width: 640px) {
  .qr-actions {
    flex-direction: column;
    gap: var(--spacing-md);
  }
}

/* QR Section for other tabs - consistent styling */
.qr-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  margin-top: var(--spacing-2xl);
  box-shadow: var(--shadow-sm);
}

.qr-section h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: center;
}

.qr-section .qr-description {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  font-style: italic;
  color: var(--color-text-secondary);
}

.qr-section .qr-container {
  margin: var(--spacing-xl) auto;
}

/* ==========================================================================
   BULK ONBOARD UI
   Clean, responsive layout for tak_users.txt onboarding
   ========================================================================= */
.bulk-onboard .form-description {
  margin-top: var(--spacing-sm);
}

.bulk-setup {
  margin-top: var(--spacing-xl);
}

.file-input {
  display: block;
  width: 100%;
  height: auto;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.file-input:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
}

/* Consistent styling for native file selector buttons */
.file-input::file-selector-button,
input[type="file"]::file-selector-button {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-text-inverse);
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  height: var(--button-height-sm);
  padding: 0 var(--spacing-xl);
  margin-right: var(--spacing-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.file-input::-webkit-file-upload-button,
input[type="file"]::-webkit-file-upload-button {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-text-inverse);
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  height: var(--button-height-sm);
  padding: 0 var(--spacing-xl);
  margin-right: var(--spacing-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.file-input:hover::file-selector-button,
input[type="file"]:hover::file-selector-button,
.file-input:hover::-webkit-file-upload-button,
input[type="file"]:hover::-webkit-file-upload-button {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.file-input:active::file-selector-button,
input[type="file"]:active::file-selector-button,
.file-input:active::-webkit-file-upload-button,
input[type="file"]:active::-webkit-file-upload-button {
  transform: translateY(0);
  box-shadow: var(--shadow-inset);
}

.bulk-session {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-xl);
  /* Ensure a meaningful canvas to allow sidebar to fill */
  min-height: 60vh;
}

.bulk-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--spacing-xl);
  align-items: stretch;
}

@media (max-width: 900px) {
  .bulk-grid {
    grid-template-columns: 1fr;
  }
}

.bulk-sidebar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  min-height: 0; /* allow children to flex */
}

.bulk-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.text-muted,
.muted {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

.user-list {
  list-style: none;
  margin: 0;
  padding: 0;
  /* Fill remaining height in the sidebar and scroll */
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.user-list li {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.user-list li:last-child {
  border-bottom: none;
}

.user-list li:hover {
  background: var(--color-surface-hover);
}

.user-list li.active {
  background: rgba(59,130,246,0.08);
  border-left: 3px solid var(--color-accent);
  padding-left: calc(var(--spacing-lg) - 3px);
  font-weight: var(--font-weight-semibold);
}

.bulk-nav {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  justify-content: space-between;
}

.bulk-main .qr-container {
  margin: var(--spacing-lg) auto;
}

.bulk-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
}

.bulk-controls #bulk-counter {
  min-width: 80px;
  text-align: center;
}

.bulk-detail {
  padding: var(--spacing-xl);
}

.bulk-username {
  margin: 0;
  margin-bottom: var(--spacing-sm);
}

.code {
  font-family: var(--font-family-mono);
  background: var(--color-background-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  color: var(--color-text-primary);
  word-break: break-word;
}

.masked {
  letter-spacing: 0.1em;
}

.action-row {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: nowrap; /* keep Copy to the right of Show */
  margin-top: var(--spacing-sm);
}

@media (max-width: 420px) {
  .action-row {
    flex-wrap: wrap; /* allow wrap on very small screens */
  }
}

/* ==========================================================================
   PROFESSIONAL BUTTON SYSTEM
   Large, accessible touch targets for emergency operations
   ========================================================================== */
.btn {
  height: var(--button-height);
  padding: 0 var(--spacing-xl);
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
  min-width: 140px;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btn:disabled::before {
  display: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-text-inverse);
  border-color: var(--color-primary-dark);
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.25);
  font-weight: var(--font-weight-bold);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(30, 58, 138, 0.35);
}

.btn-primary:focus {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-inset);
}

.btn-secondary {
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-surface-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary:focus {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.btn-secondary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-inset);
}

/* Button Icons */
.btn-icon {
  font-size: var(--font-size-lg);
  transition: transform var(--transition-fast);
}

.btn:hover .btn-icon {
  transform: scale(1.1);
}

/* Button Variants */
.btn-small {
  height: var(--button-height-sm);
  padding: 0 var(--spacing-lg);
  font-size: var(--font-size-sm);
  min-width: 100px;
}

.btn-large {
  height: var(--button-height-lg);
  padding: 0 var(--spacing-2xl);
  font-size: var(--font-size-lg);
  min-width: 180px;
}

/* ==========================================================================
   PROFESSIONAL MODAL SYSTEM
   Emergency operations center style dialogs and overlays
   ========================================================================== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--backdrop-opacity);
  z-index: var(--z-modal);
  align-items: center;
  justify-content: center;
  backdrop-filter: var(--backdrop-blur);
  padding: var(--spacing-lg);
  animation: modalBackdropFadeIn var(--transition-base) ease-out;
}

@keyframes modalBackdropFadeIn {
  from {
    opacity: 0;
    backdrop-filter: blur(0px);
  }
  to {
    opacity: 1;
    backdrop-filter: var(--backdrop-blur);
  }
}

.modal.active {
  display: flex;
}

.modal.closing {
  animation: modalBackdropFadeOut var(--transition-base) ease-out;
}

@keyframes modalBackdropFadeOut {
  to {
    opacity: 0;
    backdrop-filter: blur(0px);
  }
}

.modal-content {
  background: var(--color-surface);
  border: 3px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalContentSlideIn var(--transition-base) ease-out;
  position: relative;
}

@keyframes modalContentSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  padding: var(--spacing-2xl);
  border-bottom: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-surface-elevated);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-header h3 {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.modal-close {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  width: var(--button-height-sm);
  height: var(--button-height-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.modal-close::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-error);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.modal-close:hover::before {
  opacity: 0.1;
}

.modal-close:hover {
  background: var(--color-surface-elevated);
  color: var(--color-error);
  border-color: var(--color-border-hover);
  transform: scale(1.1) rotate(90deg);
  box-shadow: var(--shadow-sm);
}

.modal-close:active {
  transform: scale(0.95);
  box-shadow: var(--shadow-inset);
}

.modal-body {
  padding: var(--spacing-2xl);
  max-height: 60vh;
  overflow-y: auto;
}

.modal-footer {
  padding: var(--spacing-2xl);
  border-top: 2px solid var(--color-border);
  background: var(--color-surface-elevated);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-lg);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

@media (max-width: 480px) {
  .modal-footer {
    flex-direction: column-reverse;
  }
  
  .modal-footer .btn {
    width: 100%;
  }
}

/* ==========================================================================
   File Upload - Professional Dropzone
   ========================================================================== */
.dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-2xl);
  text-align: center;
  background: var(--color-surface-elevated);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.dropzone:hover {
  border-color: var(--color-border-hover);
  background: var(--color-background);
}

.dropzone.drag-over {
  border-color: var(--color-primary);
  background: rgba(37, 99, 235, 0.05);
}

.dropzone-text {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

/* ==========================================================================
   Profiles Grid - Professional Card Layout
   ========================================================================== */
.profiles-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
}

.profile-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.profiles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.profile-card {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.profile-card h4 {
  margin-bottom: var(--spacing-sm);
}

.profile-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  flex: 1;
}

.profile-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.profile-actions-card {
  display: flex;
  gap: var(--spacing-sm);
}

.btn-small {
  height: 2rem;
  font-size: var(--font-size-sm);
  padding: 0 var(--spacing-md);
  min-width: auto;
}

/* ==========================================================================
   Help Section - Professional Documentation Layout
   ========================================================================== */
.help-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
}

.help-intro {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2xl);
}

.help-section-content {
  margin-bottom: var(--spacing-2xl);
}

.help-section-content h3 {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

/* Help Steps */
.help-steps {
  display: grid;
  gap: var(--spacing-lg);
}

.help-step {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.step-number {
  width: 2rem;
  height: 2rem;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-content h4 {
  margin-bottom: var(--spacing-sm);
}

/* Help Tab Items */
.help-tabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.help-tab-item {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
}

.help-tab-item h4 {
  margin-bottom: var(--spacing-md);
}

.help-tab-item p {
  margin-bottom: var(--spacing-md);
}

.help-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.feature-tag {
  background: var(--color-primary);
  color: white;
  font-size: var(--font-size-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-medium);
}

/* ==========================================================================
   Footer - Simple Professional Footer
   ========================================================================== */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  margin-top: auto;
}

.footer p {
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   Toast Notification System
   ========================================================================== */
.notification {
  position: fixed;
  top: var(--spacing-xl);
  right: var(--spacing-xl);
  z-index: var(--z-notification);
  
  max-width: 400px;
  min-width: 300px;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  backdrop-filter: var(--backdrop-blur);
  
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  
  transform: translateX(calc(100% + var(--spacing-xl)));
  transition: transform var(--transition-base) ease-out;
  
  cursor: pointer;
}

/* Notification variants */
.notification-info {
  color: var(--color-info);
  border-left: 4px solid var(--color-info);
}

.notification-success {
  color: var(--color-success);
  border-left: 4px solid var(--color-success);
}

.notification-warning {
  color: var(--color-warning);
  border-left: 4px solid var(--color-warning);
}

.notification-error {
  color: var(--color-error);
  border-left: 4px solid var(--color-error);
}

/* Notification states */
.notification-show {
  transform: translateX(0);
}

.notification-hide {
  transform: translateX(calc(100% + var(--spacing-xl)));
  opacity: 0;
}

/* Mobile responsive notifications */
@media (max-width: 768px) {
  .notification {
    top: calc(var(--header-height) + var(--spacing-lg));
    left: var(--spacing-lg);
    right: var(--spacing-lg);
    max-width: none;
    min-width: auto;
    
    transform: translateY(-100vh);
    transition: transform var(--transition-base) ease-out;
  }
  
  .notification-show {
    transform: translateY(0);
  }
  
  .notification-hide {
    transform: translateY(-100vh);
    opacity: 0;
  }
}

/* ==========================================================================
   Accessibility - Screen Reader and Skip Links
   ========================================================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  text-decoration: none;
  z-index: 1000;
}

.skip-link:focus {
  top: 6px;
}

/* ==========================================================================
   PROFESSIONAL PREFERENCES SYSTEM
   Fixed layout, enhanced UX for preference configuration
   Addresses critical layout consistency requirements
   ========================================================================== */
.preferences-search-section {
  background: var(--color-surface-elevated);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}

.preferences-search-section:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-hover);
}

.preferences-search-grid {
  display: grid;
  grid-template-columns: 1fr 2fr auto;
  gap: var(--spacing-xl);
  align-items: end;
  margin-bottom: var(--spacing-lg);
}

/* Apply consistent label styling to preferences grid */
.preferences-search-grid label {
  display: block;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  font-size: var(--font-size-sm);
}

/* Apply consistent input/select styling to preferences grid */
.preferences-search-grid input,
.preferences-search-grid select {
  width: 100%;
  height: var(--input-height);
  padding: 0 var(--spacing-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  background: var(--color-background);
  color: var(--color-text-primary);
  transition: all var(--transition-smooth);
}

.preferences-search-grid input:hover,
.preferences-search-grid select:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.preferences-search-grid input:focus,
.preferences-search-grid select:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-focus);
  transform: translateY(-2px);
}

@media (max-width: 1024px) {
  .preferences-search-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .preferences-search-grid .preferences-controls {
    display: flex;
    width: 100%;
    gap: var(--spacing-md);
  }
  
  .preferences-search-grid .preferences-controls button {
    flex: 1;
  }
}

@media (max-width: 640px) {
  .preferences-search-grid {
    grid-template-columns: 1fr;
  }
}

.pref-search-field {
  position: relative;
}

#pref-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: var(--z-dropdown);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 500px;
  overflow-y: auto;
  margin-top: var(--spacing-xs);
  display: none;
}

.pref-search-help-container {
  background: #eff6ff;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

[data-theme="dark"] .pref-search-help-container {
  background: #172554;
  border-color: var(--color-accent);
}

.pref-search-help-container .help-text {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  text-align: center;
  line-height: var(--line-height-relaxed);
}

.pref-search-help-container strong {
  color: var(--color-accent);
}

.preferences-controls {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 640px) {
  .preferences-controls {
    flex-direction: column;
  }
}

/* Preference Rows - Emergency Operations Style */
#pref-rows {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  min-height: 200px;
}

.pref-row {
  display: grid;
  grid-template-columns: 2fr 1fr 2fr auto;
  gap: var(--spacing-lg);
  align-items: end;
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

/* New preference row grid with proper alignment */
.pref-row-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 2fr auto;
  gap: var(--spacing-lg);
  align-items: start;
}

/* Apply form styling to preference row inputs */
.pref-row-grid label {
  display: block;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  font-size: var(--font-size-sm);
}

.pref-row-grid input,
.pref-row-grid select {
  width: 100%;
  height: var(--input-height);
  padding: 0 var(--spacing-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  background: var(--color-background);
  color: var(--color-text-primary);
  transition: all var(--transition-smooth);
}

.pref-row-grid input:hover,
.pref-row-grid select:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.pref-row-grid input:focus,
.pref-row-grid select:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-focus);
  transform: translateY(-2px);
}

.pref-field-with-hint {
  position: relative;
}

.pref-field-with-hint input {
  width: 100%;
}

.pref-key-hint {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 2px;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  font-style: italic;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pref-description {
  position: absolute;
  top: calc(100% + 18px);
  left: 0;
  right: 0;
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  line-height: 1.3;
  padding: 4px 0;
  display: none;
}

.pref-value-field {
  position: relative;
}

.pref-value-hint {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 2px;
  font-size: var(--font-size-xs);
  color: var(--color-success);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: none;
}

.pref-remove-btn {
  align-self: center;
  margin-top: 24px; /* Align with input fields accounting for label */
}

@media (max-width: 768px) {
  .pref-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .pref-row-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .pref-remove-btn {
    margin-top: var(--spacing-md);
    width: 100%;
  }
}

.pref-row button {
  align-self: end;
  height: var(--input-height);
}

/* ==========================================================================
   Responsive Design - Emergency Operations Mobile Support
   ========================================================================== */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-lg);
  }

  .header-content {
    flex-direction: row;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-md);
  }

  .header {
    height: var(--header-height);
    position: fixed;
  }

  .main {
    padding-top: calc(var(--header-height) + var(--spacing-xl));
  }

  .tabs {
    flex-direction: column;
    padding: var(--spacing-md);
  }

  .tab-btn {
    height: var(--button-height);
    min-width: auto;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .qr-actions {
    flex-direction: column;
  }

  .profiles-grid {
    grid-template-columns: 1fr;
  }

  .help-steps {
    grid-template-columns: 1fr;
  }

  .help-step {
    flex-direction: column;
    text-align: center;
  }

  .help-tabs {
    grid-template-columns: 1fr;
  }
  
  .tak-config-container {
    gap: var(--spacing-xl);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .header-content {
    padding: 0 var(--spacing-md);
  }

  .header-actions {
    flex-wrap: nowrap;
    gap: var(--spacing-xs);
  }

  .btn {
    min-width: auto;
    flex: 1;
    font-size: var(--font-size-sm);
  }

  .qr-actions {
    gap: var(--spacing-md);
  }

  .modal-content {
    width: 95%;
    margin: var(--spacing-md);
  }
  
  .tab-pane {
    padding: var(--spacing-xl);
  }
}

/* ==========================================================================
   Print Styles - Professional Print Layout
   ========================================================================== */
@media print {
  .header-actions,
  .footer,
  .help-btn {
    display: none;
  }

  .header {
    position: static;
    border-bottom: 2px solid #000;
  }

  .qr-container {
    background: white;
    border: 2px solid #000;
  }

  .btn {
    display: none;
  }
}

/* ==========================================================================
   High Contrast Mode Support
   ========================================================================== */
@media (prefers-contrast: high) {
  :root {
    --color-border: #000000;
    --color-text-primary: #000000;
    --color-background: #ffffff;
    --shadow-focus: 0 0 0 3px #000000;
  }

  [data-theme="dark"] {
    --color-border: #ffffff;
    --color-text-primary: #ffffff;
    --color-background: #000000;
    --shadow-focus: 0 0 0 3px #ffffff;
  }
}

/* ==========================================================================
   Reduced Motion Support
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
  }

  html {
    scroll-behavior: auto;
  }
}