/* ============================================================
   WiseTrip AI — Design System
   "Precision Calm" — Corporate Modern + Minimalist
   ============================================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Manrope:wght@600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200');

/* ── Design Tokens ───────────────────────────────────────── */
:root {
  /* Surface */
  --color-surface:                  #faf9fb;
  --color-surface-dim:              #dbd9dc;
  --color-surface-bright:           #faf9fb;
  --color-surface-container-lowest: #ffffff;
  --color-surface-container-low:    #f5f3f6;
  --color-surface-container:        #efedf0;
  --color-surface-container-high:   #e9e8ea;
  --color-surface-container-highest:#e3e2e5;
  --color-surface-variant:          #e3e2e5;

  /* On-surface */
  --color-on-surface:               #1b1c1e;
  --color-on-surface-variant:       #43474d;
  --color-inverse-surface:          #2f3033;
  --color-inverse-on-surface:       #f2f0f3;

  /* Outline */
  --color-outline:                  #74777e;
  --color-outline-variant:          #c4c6ce;

  /* Primary */
  --color-primary:                  #000f22;
  --color-on-primary:               #ffffff;
  --color-primary-container:        #0a2540;
  --color-on-primary-container:     #768dad;
  --color-inverse-primary:          #b0c8eb;
  --color-primary-fixed:            #d2e4ff;
  --color-primary-fixed-dim:        #b0c8eb;
  --color-on-primary-fixed:         #001c37;
  --color-on-primary-fixed-variant: #314865;

  /* Secondary */
  --color-secondary:                #5c5f61;
  --color-on-secondary:             #ffffff;
  --color-secondary-container:      #e0e3e5;
  --color-on-secondary-container:   #626567;
  --color-secondary-fixed:          #e0e3e5;
  --color-secondary-fixed-dim:      #c4c7c9;
  --color-on-secondary-fixed:       #191c1e;
  --color-on-secondary-fixed-variant:#444749;

  /* Tertiary */
  --color-tertiary:                 #1a0b00;
  --color-on-tertiary:              #ffffff;
  --color-tertiary-container:       #381d00;
  --color-on-tertiary-container:    #ae835a;

  /* Semantic */
  --color-error:                    #ba1a1a;
  --color-on-error:                 #ffffff;
  --color-error-container:          #ffdad6;
  --color-on-error-container:       #93000a;
  --color-success:                  #22C55E;
  --color-warning:                  #F59E0B;
  --color-critical:                 #EF4444;
  --color-background:               #faf9fb;
  --color-on-background:            #1b1c1e;

  /* Typography */
  --font-display:     'Manrope', sans-serif;
  --font-headline:    'Manrope', sans-serif;
  --font-body:        'Inter', sans-serif;
  --font-label:       'Inter', sans-serif;

  /* Spacing (8px base) */
  --space-unit:       8px;
  --space-sm:         8px;
  --space-md:         16px;
  --space-lg:         32px;
  --space-gutter:     24px;
  --space-card:       24px;
  --space-page:       40px;
  --container-max:    1440px;
  --container-inner:  1320px;

  /* Shape */
  --radius-sm:        4px;
  --radius-md:        8px;
  --radius-lg:        12px;
  --radius-xl:        16px;
  --radius-full:      9999px;

  /* Elevation */
  --shadow-card:      0 2px 12px rgba(10,37,64,0.04);
  --shadow-float:     0 4px 24px rgba(10,37,64,0.06);
  --shadow-elevated:  0 8px 32px rgba(10,37,64,0.10);
  --border-default:   1px solid var(--color-surface-container);
}

/* ── Reset & Base ────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-on-surface);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea, select { font-family: inherit; }

/* ── Typography Scale ────────────────────────────────────── */
.t-display {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.t-headline-lg {
  font-family: var(--font-headline);
  font-size: 32px;
  font-weight: 600;
  line-height: 1.3;
}
.t-headline-md {
  font-family: var(--font-headline);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.4;
}
.t-headline-sm {
  font-family: var(--font-headline);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
}
.t-body-lg {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.6;
}
.t-body-md {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
}
.t-body-sm {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
}
.t-label-caps {
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.t-numeric {
  font-family: var(--font-label);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

/* ── Layout ──────────────────────────────────────────────── */
.container {
  max-width: var(--container-inner);
  margin-inline: auto;
  padding-inline: var(--space-page);
}

/* ── Material Symbols ────────────────────────────────────── */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  user-select: none;
}
.icon-fill {
  font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}
.icon-sm { font-size: 18px; }
.icon-md { font-size: 24px; }

/* ── Risk Badge ──────────────────────────────────────────── */
.risk-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border-radius: var(--radius-md);
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.risk-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.risk-badge.low    { background: rgba(34,197,94,0.10);  color: #16a34a; }
.risk-badge.low .dot    { background: var(--color-success); }
.risk-badge.moderate { background: rgba(245,158,11,0.10); color: #b45309; }
.risk-badge.moderate .dot { background: var(--color-warning); }
.risk-badge.high   { background: rgba(239,68,68,0.10);  color: #dc2626; }
.risk-badge.high .dot   { background: var(--color-critical); }

/* ── Card ────────────────────────────────────────────────── */
.card {
  background: var(--color-surface-container-lowest);
  border-radius: var(--radius-xl);
  border: var(--border-default);
  box-shadow: var(--shadow-card);
}

/* ── Button ──────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary-container);
  color: var(--color-on-primary);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
  box-shadow: var(--shadow-card);
  white-space: nowrap;
}
.btn-primary:hover {
  background: rgba(10,37,64,0.88);
  box-shadow: var(--shadow-float);
}
.btn-primary:active { transform: scale(0.97); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: var(--color-on-surface-variant);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: var(--border-default);
  transition: background 0.2s, color 0.2s;
}
.btn-ghost:hover {
  background: var(--color-surface-container-low);
  color: var(--color-on-surface);
}

/* ── Form Input ──────────────────────────────────────────── */
.input-field {
  width: 100%;
  background: var(--color-surface);
  color: var(--color-on-surface);
  font-family: var(--font-body);
  font-size: 16px;
  border: 1px solid var(--color-surface-variant);
  border-radius: var(--radius-md);
  padding: 11px 12px 11px 40px;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.input-field:focus {
  border-color: var(--color-primary-container);
  box-shadow: 0 0 0 2px rgba(10,37,64,0.10);
}
.input-field::placeholder { color: var(--color-outline); }

/* ── Chat Bubbles ────────────────────────────────────────── */
.chat-bubble-ai {
  background: var(--color-surface-container);
  border-radius: var(--radius-md);
  border-top-left-radius: 2px;
  padding: 10px 12px;
  max-width: 85%;
}
.chat-bubble-user {
  background: var(--color-primary-container);
  color: var(--color-on-primary);
  border-radius: var(--radius-md);
  border-top-right-radius: 2px;
  padding: 10px 12px;
  max-width: 85%;
}

/* ── Map Container ───────────────────────────────────────── */
#risk-map {
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* Leaflet overrides to match design */
.leaflet-container {
  font-family: var(--font-body) !important;
  background: var(--color-surface-container-high) !important;
}
.leaflet-control-zoom a {
  font-family: var(--font-body) !important;
  color: var(--color-on-surface) !important;
}
.leaflet-tile-pane { filter: saturate(0.85) brightness(1.02); }

/* Custom map marker pulse */
.map-marker {
  display: flex;
  align-items: center;
  justify-content: center;
}
.pulse-ring {
  position: absolute;
  border-radius: 50%;
  animation: pulse-ring 2s ease-out infinite;
}
@keyframes pulse-ring {
  0%   { transform: scale(1);   opacity: 0.7; }
  100% { transform: scale(2.5); opacity: 0; }
}

/* ── Destination Card ────────────────────────────────────── */
.dest-card {
  width: 280px;
  flex-shrink: 0;
  border-radius: var(--radius-xl);
  background: var(--color-surface-container-lowest);
  border: var(--border-default);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  scroll-snap-align: start;
  transition: transform 0.2s, box-shadow 0.2s;
}
.dest-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-float);
}
.dest-card img {
  height: 160px;
  width: 100%;
  object-fit: cover;
}

/* ── Scrollbar Hide ──────────────────────────────────────── */
.hide-scrollbar::-webkit-scrollbar { display: none; }
.hide-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* ── Table ───────────────────────────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; min-width: 900px; }
.data-table thead { background: #f8f9fb; border-bottom: var(--border-default); }
.data-table th {
  padding: 16px 24px;
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-outline);
  text-align: left;
}
.data-table td {
  padding: 16px 24px;
  color: var(--color-on-surface);
  font-size: 14px;
}
.data-table tbody tr {
  border-bottom: var(--border-default);
  transition: background 0.15s;
}
.data-table tbody tr:last-child { border-bottom: none; }
.data-table tbody tr:hover { background: rgba(248,250,252,0.7); }
.data-table .airport-code { font-weight: 500; color: var(--color-primary-container); }
.data-table .muted { color: var(--color-on-surface-variant); }

/* ── Mobile Menu ─────────────────────────────────────────── */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  top: 80px;
  background: white;
  z-index: 49;
  padding: 24px;
  flex-direction: column;
  gap: 8px;
  border-top: var(--border-default);
  box-shadow: var(--shadow-elevated);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  color: var(--color-on-surface);
  font-family: var(--font-headline);
  font-weight: 600;
  font-size: 16px;
  transition: background 0.15s;
}
.mobile-menu a:hover { background: var(--color-surface-container-low); }
.mobile-menu a.active {
  background: var(--color-primary-container);
  color: var(--color-on-primary);
}

/* ── Skeleton Loading ────────────────────────────────────── */
@keyframes shimmer {
  0%   { background-position: -600px 0; }
  100% { background-position: 600px 0; }
}
.skeleton {
  background: linear-gradient(90deg, var(--color-surface-container) 25%, var(--color-surface-container-high) 50%, var(--color-surface-container) 75%);
  background-size: 600px 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius-md);
}

/* ── AI Chat Typing Indicator ────────────────────────────── */
.typing-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--color-outline);
  animation: typing-bounce 1.2s ease-in-out infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30%           { transform: translateY(-5px); opacity: 1; }
}

/* ── Flight Risk Result ──────────────────────────────────── */
.risk-result-panel {
  display: none;
  margin-top: 16px;
  padding: 16px;
  border-radius: var(--radius-lg);
  border: 1px solid;
  animation: fade-in 0.3s ease;
}
.risk-result-panel.visible { display: block; }
.risk-result-panel.low      { background: rgba(34,197,94,0.07);  border-color: rgba(34,197,94,0.25);  }
.risk-result-panel.moderate { background: rgba(245,158,11,0.07); border-color: rgba(245,158,11,0.25); }
.risk-result-panel.high     { background: rgba(239,68,68,0.07);  border-color: rgba(239,68,68,0.25);  }
@keyframes fade-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

/* ── Query Counter ───────────────────────────────────────── */
.query-counter {
  font-size: 12px;
  color: var(--color-outline);
  text-align: center;
  padding: 4px 0;
}
.query-counter span { font-weight: 600; color: var(--color-on-surface); }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .container { padding-inline: 24px; }
}

@media (max-width: 768px) {
  .container { padding-inline: 16px; }
  .t-display { font-size: 32px; }
  .t-headline-lg { font-size: 24px; }
  .hero-section { height: 280px !important; }
  .hero-content { padding: 24px !important; }
  .two-col { flex-direction: column !important; }
  .ai-chat-col { width: 100% !important; height: 400px; }
  .map-col { height: 400px; }
  .flight-checker { margin-top: -48px !important; padding-inline: 16px; }
}

@media (max-width: 480px) {
  .container { padding-inline: 12px; }
  .t-display { font-size: 28px; }
  .btn-primary { font-size: 14px; padding: 10px 18px; }
}

/* ── Shared Footer (injected by app.js) ──────────────────── */
.site-footer {
  background: #f8fafc;
  border-top: 1px solid var(--color-surface-container);
  margin-top: 64px;
  padding: 48px 0;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: center;
  text-align: center;
}
@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
    align-items: flex-start;
  }
}
.footer-brand .logo {
  color: var(--color-on-surface) !important;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: center;
}
@media (min-width: 768px) {
  .footer-links { justify-content: flex-end; }
}
.footer-links a {
  font-family: 'Manrope', sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--color-on-surface-variant);
  text-transform: uppercase;
  transition: color 0.15s;
  text-decoration: none;
}
.footer-links a:hover { color: var(--color-primary-container); }
.footer-copy {
  font-size: 13px;
  color: var(--color-outline);
  margin-top: 4px;
}

/* ── Shared Header (injected by app.js) ──────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid #f1f1f2;
  box-shadow: 0 1px 4px rgba(10,37,64,0.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Manrope', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary-container);
  letter-spacing: -0.03em;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-icon { font-size: 22px; color: var(--color-primary-container); }
.desktop-nav {
  display: none;
  align-items: center;
  gap: 32px;
}
@media (min-width: 768px) { .desktop-nav { display: flex; } }
.nav-link {
  font-family: 'Manrope', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-on-surface-variant);
  text-decoration: none;
  padding-bottom: 3px;
  transition: color 0.2s;
  white-space: nowrap;
}
.nav-link:hover { color: var(--color-primary-container); }
.nav-link.active {
  color: var(--color-primary-container);
  border-bottom: 2px solid var(--color-primary-container);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: var(--color-on-surface-variant);
  transition: background 0.15s, color 0.15s;
  background: none;
  border: none;
  cursor: pointer;
}
.icon-btn:hover {
  background: var(--color-surface-container-low);
  color: var(--color-primary-container);
}
.hamburger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  color: var(--color-on-surface);
  transition: background 0.15s;
  background: none;
  border: none;
  cursor: pointer;
}
.hamburger:hover { background: var(--color-surface-container-low); }
@media (min-width: 768px) { .hamburger { display: none; } }