/**
 * IRCTC Modern Web Redesign - Core Styles & Design Tokens
 * Official Palette: Deep Navy (#0c2340), Vibrant Saffron (#ff671f), India Green (#138808)
 */

:root {
  /* Official Gov / IRCTC Brand Palette */
  --irctc-navy-950: #051324;
  --irctc-navy-900: #0c2340;
  --irctc-navy-800: #163b6b;
  --irctc-navy-700: #1e40af;
  --irctc-navy-600: #2563eb;

  --irctc-saffron-500: #ff671f;
  --irctc-saffron-600: #ea580c;
  --irctc-saffron-700: #c2410c;
  --irctc-saffron-50: #fff7ed;

  --irctc-green-600: #138808;
  --irctc-green-500: #16a34a;

  /* Railway Availability Status Colors */
  --status-available: #059669;
  --status-available-bg: #ecfdf5;
  --status-available-border: #a7f3d0;

  --status-rac: #d97706;
  --status-rac-bg: #fffbeb;
  --status-rac-border: #fde68a;

  --status-wl: #dc2626;
  --status-wl-bg: #fef2f2;
  --status-wl-border: #fecaca;

  /* Neutrals & UI Surface Colors */
  --surface-bg: #f4f7fb;
  --surface-card: #ffffff;
  --surface-elevated: #ffffff;
  --surface-subtle: #f8fafc;
  --surface-border: #e2e8f0;
  --surface-border-subtle: #cbd5e1;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  /* Elevation Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.08);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.09), 0 4px 6px -4px rgb(0 0 0 / 0.08);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.12), 0 8px 10px -6px rgb(0 0 0 / 0.08);
  --shadow-drawer: -8px 0 32px 0 rgba(12, 35, 64, 0.25);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  /* Base Typography Scale (md by default) */
  --base-font-size: 16px;
  --font-sans: 'Inter', 'Noto Sans Devanagari', 'Nirmala UI', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-hindi: 'Noto Sans Devanagari', 'Inter', system-ui, sans-serif;
}

/* Root HTML with dynamic font-size transition */
html {
  font-size: var(--base-font-size);
  transition: font-size 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Accessibility: Font Size Scaling */
html[data-font-size="sm"] {
  --base-font-size: 14px;
}
html[data-font-size="md"] {
  --base-font-size: 16px;
}
html[data-font-size="lg"] {
  --base-font-size: 18px;
}

/* Accessibility: High Contrast Mode */
html[data-contrast="high"] {
  --surface-bg: #000000;
  --surface-card: #0a0a0a;
  --surface-elevated: #141414;
  --surface-subtle: #1a1a1a;
  --surface-border: #facc15;
  --surface-border-subtle: #ffd166;
  
  --text-primary: #ffffff;
  --text-secondary: #fef08a;
  --text-muted: #e2e8f0;
  
  --irctc-navy-950: #000000;
  --irctc-navy-900: #ffffff;
  --irctc-navy-800: #f8fafc;
  --irctc-navy-700: #f1f5f9;
  --irctc-navy-600: #93c5fd;

  --irctc-saffron-500: #ffd166;
  --irctc-saffron-600: #facc15;
  --irctc-saffron-700: #fef08a;
  --irctc-saffron-50: #1c1917;
  
  --status-available: #22c55e;
  --status-available-bg: #052e16;
  --status-available-border: #22c55e;
  --status-rac: #f59e0b;
  --status-rac-bg: #451a03;
  --status-rac-border: #f59e0b;
  --status-wl: #ef4444;
  --status-wl-bg: #450a0a;
  --status-wl-border: #ef4444;
}

/* Ensure headers stay obsidian black in high contrast mode */
html[data-contrast="high"] .portal-main-header,
html[data-contrast="high"] .gov-top-strip {
  background: #000000 !important;
  border-bottom: 2px solid #ffd166 !important;
}

html[data-contrast="high"] .lang-select {
  background: #000000 !important;
  border: 1.5px solid #ffd166 !important;
  color: #ffffff !important;
}

html[data-contrast="high"] .lang-select option {
  background: #000000 !important;
  color: #ffffff !important;
}

html[data-contrast="high"] .helpline-badge {
  color: #ffd166 !important;
  border-color: #ffd166 !important;
  background: rgba(255, 209, 102, 0.1) !important;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  font-size: var(--base-font-size);
  color: var(--text-primary);
  background-color: var(--surface-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Links & Buttons Reset */
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Utility Helpers */
.hidden {
  display: none !important;
}
.text-saffron {
  color: var(--irctc-saffron-500) !important;
}
.text-green {
  color: var(--status-available) !important;
}
.text-bold {
  font-weight: 700 !important;
}

/* Skip to Content for Screen Readers */
.skip-to-content {
  position: absolute;
  top: -60px;
  left: 12px;
  background: var(--irctc-saffron-500);
  color: #ffffff;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 700;
  transition: top 0.2s ease;
}
.skip-to-content:focus {
  top: 12px;
}

/* ==========================================================================
   1. GOVERNMENT OF INDIA & ACCESSIBILITY TOP STRIP
   ========================================================================== */
.gov-top-strip {
  background-color: var(--irctc-navy-950);
  color: #cbd5e1;
  font-size: 0.82rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 5px 24px;
}
.gov-strip-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.gov-title-col {
  display: flex;
  align-items: center;
  gap: 8px;
}
.gov-flag-icon {
  font-size: 1.1rem;
}
.gov-text-en {
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.5px;
}
.gov-text-hi {
  color: #94a3b8;
  font-family: var(--font-hindi);
}

.gov-a11y-col {
  display: flex;
  align-items: center;
  gap: 16px;
}
.a11y-font-group {
  display: flex;
  align-items: center;
  gap: 4px;
}
.a11y-label {
  color: #94a3b8;
  font-size: 0.76rem;
  margin-right: 4px;
}
.btn-font-scale {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.76rem;
  font-weight: 700;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  border: none;
  outline: none;
}
.btn-font-scale:hover {
  transform: translateY(-1px) scale(1.06);
  background: rgba(255, 255, 255, 0.18);
}
.btn-font-scale:active {
  transform: scale(0.95);
}
.btn-font-scale.active {
  background: #ff671f;
  color: #ffffff;
  box-shadow: 0 0 10px rgba(255, 103, 31, 0.5);
  transform: scale(1.08);
}

.btn-contrast-toggle {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.76rem;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}
.btn-contrast-toggle:hover,
.btn-contrast-toggle.active {
  background: #facc15;
  color: #000000;
  font-weight: 700;
}

.lang-picker {
  display: flex;
  align-items: center;
}
.lang-select {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  font-size: 0.78rem;
  outline: none;
}
.lang-select option {
  background: var(--irctc-navy-900);
  color: #ffffff;
}

/* ==========================================================================
   2. MAIN PORTAL HEADER & AUTHENTIC BRANDING
   ========================================================================== */
.portal-main-header {
  background: var(--irctc-navy-900);
  color: #ffffff;
  padding: 12px 24px;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* Official 3-Insignias Branding Cluster */
.branding-cluster {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  flex-shrink: 0 !important;
  z-index: 10;
  position: relative;
}
.emblem-wrapper {
  width: 38px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.railways-seal-wrapper {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.irctc-logo-wrapper {
  height: 42px;
  width: auto;
  max-width: 195px;
  flex-shrink: 0;
  background: #ffffff;
  border-radius: 9px;
  padding: 3px 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.irctc-logo-wrapper:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.brand-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.15));
}

.brand-divider {
  width: 1.5px;
  height: 38px;
  background-color: rgba(255, 255, 255, 0.2);
}

/* Main Navigation Tabs */
.header-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.main-nav-tab {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  color: #e2e8f0;
  font-weight: 600;
  font-size: 0.92rem;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  white-space: nowrap;
}
.main-nav-tab:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}
.main-nav-tab.active {
  background: var(--irctc-saffron-500);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(255, 103, 31, 0.4);
}
.nav-tab-icon {
  font-size: 1.1rem;
}

/* User & Helpline Cluster */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0 !important;
}
.helpline-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  color: #ffd166;
  white-space: nowrap;
  box-sizing: border-box;
  flex-shrink: 0;
  cursor: pointer;
  outline: none;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  user-select: none;
}
.helpline-badge:hover {
  transform: translateY(-1px) scale(1.04);
  background: rgba(255, 209, 102, 0.18);
  border-color: #ffd166;
  box-shadow: 0 4px 14px rgba(255, 209, 102, 0.25);
}
.helpline-badge:active {
  transform: scale(0.97);
}
.btn-user-login {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 24px 10px 24px;
  background: linear-gradient(135deg, #0c2340 0%, #163b6b 100%);
  border: 1.5px solid rgba(56, 189, 248, 0.35);
  border-radius: var(--radius-md);
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  overflow: hidden;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 14px rgba(12, 35, 64, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
.btn-user-login .tricolor-rail-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3.5px;
  background: linear-gradient(90deg, #ff671f 33.3%, #ffffff 33.3%, #ffffff 66.6%, #138808 66.6%);
  transition: height 0.25s ease, filter 0.25s ease;
}
.btn-user-login:hover {
  transform: translateY(-2px);
  border-color: #38bdf8;
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  background: linear-gradient(135deg, #133b6d 0%, #1e4b85 100%);
}
.btn-user-login:hover .tricolor-rail-line {
  height: 5px;
  filter: drop-shadow(0 -2px 6px rgba(255, 103, 31, 0.6));
}
.btn-user-login:active {
  transform: scale(0.97);
}

/* Tricolor Decorative Ribbon */
.portal-tricolor-ribbon {
  height: 4.5px;
  background: linear-gradient(to bottom, #ff671f 33.3%, #ffffff 33.3%, #ffffff 66.6%, #138808 66.6%);
  width: 100%;
}

/* ==========================================================================
   3. APP CONTAINER & FOOTER
   ========================================================================== */
.portal-main-content {
  flex: 1;
  width: 100%;
}
.page-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px;
}

/* Portal Footer */
.portal-footer {
  background: var(--irctc-navy-950);
  color: #94a3b8;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: auto;
}
.footer-top {
  padding: 36px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-grid {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
  gap: 32px;
}
.footer-brand-title {
  color: #ffffff;
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.footer-brand-desc {
  font-size: 0.85rem;
  line-height: 1.6;
  color: #64748b;
  margin-bottom: 14px;
}
.footer-col-title {
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.84rem;
}
.footer-links-list a:hover {
  color: var(--irctc-saffron-500);
}

.footer-bottom {
  padding: 16px 24px;
  font-size: 0.8rem;
  text-align: center;
  color: #64748b;
}
.footer-bottom-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* Floating REST API / SQLite Status Pill */
.api-status-indicator {
  position: fixed;
  bottom: 18px;
  left: 20px;
  z-index: 9990;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 600;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  user-select: none;
}
.api-status-indicator.online {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #34d399;
}
.api-status-indicator.offline {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #fbbf24;
}
.api-status-indicator .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.api-status-indicator .green-dot {
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulse-dot 2s infinite ease-in-out;
}
.api-status-indicator .orange-dot {
  background: #f59e0b;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}