/* ============================================================
   AIRLINKSIN — FUTURIST VISUAL LAYER
   Adds: animated background grid, ambient glow, glass cards,
   neon buttons, gradient borders, scan-line accents, holographic
   text, smooth micro-animations. Loaded after all other CSS.
   ============================================================ */

/* ---------- Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ---------- Page background: animated gradient + grid ---------- */
body {
  background:
    radial-gradient(ellipse at 20% 0%, rgba(124, 58, 237, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(0, 229, 255, 0.20) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(255, 46, 139, 0.10) 0%, transparent 70%),
    var(--color-bg-page);
  background-attachment: fixed;
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  letter-spacing: -0.005em;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Grid overlay — subtle tech-y mesh */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* Subtle scan-line shimmer */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0, 229, 255, 0.015) 50%);
  background-size: 100% 4px;
  pointer-events: none;
  z-index: 0;
  mix-blend-mode: overlay;
}

main, header, footer { position: relative; z-index: 1; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}
h1 { font-weight: 700; letter-spacing: -0.03em; }
code, pre, .mono { font-family: var(--font-mono); }

/* Holographic gradient text utility */
.gradient-text,
.holo-text {
  background: var(--gradient-cosmic);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: holo-shift 6s ease-in-out infinite;
}
@keyframes holo-shift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

/* ---------- Glass cards ---------- */
.card {
  background: var(--color-bg-card);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  transition:
    transform var(--duration-base) var(--ease-out-quart),
    border-color var(--duration-base) ease,
    box-shadow var(--duration-base) ease;
}
.card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}
.card-elevated {
  background: linear-gradient(135deg, rgba(20, 22, 38, 0.85), rgba(30, 34, 56, 0.72));
  border: 1px solid var(--color-border-strong);
  box-shadow: var(--shadow-lg);
}

/* Gradient border (animated rotating conic) */
.card-glow {
  position: relative;
  isolation: isolate;
}
.card-glow::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: conic-gradient(from var(--angle, 0deg),
    #00E5FF, #7C3AED, #FF2E8B, #00FFA3, #00E5FF);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  animation: spin-conic 6s linear infinite;
  pointer-events: none;
}
@property --angle {
  syntax: '<angle>';
  inherits: false;
  initial-value: 0deg;
}
@keyframes spin-conic {
  to { --angle: 360deg; }
}

/* ---------- Buttons — neon with glow on hover ---------- */
.btn {
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--radius-md);
  transition:
    background var(--duration-fast) ease,
    border-color var(--duration-fast) ease,
    color var(--duration-fast) ease,
    box-shadow var(--duration-base) ease,
    transform var(--duration-fast) var(--ease-out-quart);
  position: relative;
  overflow: hidden;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--gradient-primary);
  color: #06070C;
  border: none;
  font-weight: 600;
  box-shadow:
    0 0 0 1px rgba(0, 229, 255, 0.4),
    0 0 16px rgba(0, 229, 255, 0.3);
}
.btn-primary:hover {
  box-shadow:
    0 0 0 1px rgba(0, 229, 255, 0.6),
    0 0 32px rgba(0, 229, 255, 0.5);
}
/* Shimmer sweep */
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.6s ease;
}
.btn-primary:hover::after { left: 100%; }

.btn-ghost {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  background: rgba(0, 229, 255, 0.08);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
}

.btn-lg { font-size: 15px; min-height: 48px; padding: 0 24px; }
.btn-sm { font-size: 13px; min-height: 32px; padding: 0 12px; }
.btn-block { width: 100%; display: flex; align-items: center; justify-content: center; gap: 8px; }

/* ---------- Chips ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}
.chip-info    { background: var(--color-bg-info);    color: var(--color-text-info);    border-color: rgba(0, 229, 255, 0.3); }
.chip-success { background: var(--color-bg-success); color: var(--color-text-success); border-color: rgba(0, 255, 163, 0.3); }
.chip-warning { background: var(--color-bg-warning); color: var(--color-text-warning); border-color: rgba(255, 184, 0, 0.3); }
.chip-error,
.chip-danger  { background: var(--color-bg-danger);  color: var(--color-text-danger);  border-color: rgba(255, 46, 139, 0.3); }

/* ---------- Form inputs — dark glass with cyan focus ring ---------- */
.input, .select, .textarea {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 14px;
  font-family: var(--font-sans);
  transition: border-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease, background var(--duration-fast) ease;
  width: 100%;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(0, 229, 255, 0.04);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
}
.input::placeholder, .textarea::placeholder { color: var(--color-text-muted); }
.field label {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

/* ---------- Header — frosted glass with neon underline ---------- */
.site-header {
  background: rgba(5, 6, 13, 0.7);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-accent-2), var(--color-accent), transparent);
  opacity: 0.6;
}

/* Brand logo glow */
.brand {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.brand .logo {
  background: var(--gradient-primary);
  color: #06070C;
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.4);
}

.nav-links a {
  position: relative;
  color: var(--color-text-secondary);
  transition: color var(--duration-fast) ease;
}
.nav-links a:hover { color: var(--color-primary); }
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 1px;
  background: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary);
  transition: width var(--duration-base) var(--ease-out-quart);
}
.nav-links a:hover::after { width: 100%; }

/* ---------- Hero — glow orbs + cosmic gradient ---------- */
.hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.18) 0%, transparent 60%);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  z-index: -1;
  animation: orb-pulse 8s ease-in-out infinite;
}
.hero::after {
  content: '';
  position: absolute;
  top: 30%; left: 80%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(255, 46, 139, 0.15) 0%, transparent 60%);
  border-radius: 50%;
  z-index: -1;
  animation: orb-pulse 10s ease-in-out infinite reverse;
}
@keyframes orb-pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
  50%      { transform: translate(-50%, -50%) scale(1.2); opacity: 1; }
}

.hero h1 {
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, #F0F4FF 0%, #00E5FF 50%, #FF2E8B 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: holo-shift 8s ease-in-out infinite;
}

/* ---------- Tables — dark with neon row hover ---------- */
table {
  width: 100%;
  border-collapse: collapse;
  background: transparent;
}
table th {
  background: rgba(0, 229, 255, 0.05);
  color: var(--color-text-secondary);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}
table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-primary);
  font-size: 14px;
}
table tr {
  transition: background var(--duration-fast) ease;
}
table tbody tr:hover {
  background: rgba(0, 229, 255, 0.04);
}

/* ---------- Modal / drawer ---------- */
.modal-content, .drawer-content {
  background: rgba(15, 17, 28, 0.92);
  backdrop-filter: blur(32px) saturate(180%);
  -webkit-backdrop-filter: blur(32px) saturate(180%);
  border: 1px solid var(--color-border-strong);
  box-shadow: var(--shadow-lg);
}
.drawer-overlay { background: rgba(5, 6, 13, 0.6); backdrop-filter: blur(8px); }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: rgba(0, 0, 0, 0.3); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent-2));
  border-radius: var(--radius-pill);
  border: 2px solid var(--color-bg-page);
}
::-webkit-scrollbar-thumb:hover { box-shadow: 0 0 12px var(--color-primary); }

/* ---------- Smooth theme transition ---------- */
:root {
  --theme-transition: background-color var(--duration-base) ease,
                      color var(--duration-base) ease,
                      border-color var(--duration-base) ease;
}
body, .card, .btn, .input, .select, .textarea, .chip,
.site-header, .modal-content, .drawer-content,
table th, table td, .user-menu-item, .header-quick-icon {
  transition: var(--theme-transition);
}

/* ---------- Highlighted header icons (My Trips, My Parcels) ---------- */
.header-quick-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--duration-fast) ease;
  margin: 0 2px;
}
.header-quick-icon:hover {
  background: rgba(0, 229, 255, 0.15);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.4);
}
.header-quick-icon:active { transform: translateY(0); }
.header-quick-icon:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.4);
}
.header-quick-icon.active {
  background: var(--gradient-primary);
  color: #06070C;
  border-color: var(--color-primary);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.5);
}
.header-quick-icon.active::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-primary);
}

/* Tooltip */
.quick-tooltip {
  position: absolute;
  bottom: -36px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 17, 28, 0.95);
  color: var(--color-text-primary);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-fast) ease, bottom var(--duration-fast) ease;
}
.header-quick-icon:hover .quick-tooltip {
  opacity: 1;
  bottom: -32px;
}

/* Theme pill toggle in user menu */
.theme-pill {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 6px 4px;
  font-size: 11px;
  font-weight: 500;
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all var(--duration-fast) ease;
}
.theme-pill:hover { color: var(--color-text-primary); }
.theme-pill.active {
  background: var(--color-bg-card);
  color: var(--color-primary);
  border-color: var(--color-border-strong);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
}

/* ---------- Light-mode high-contrast overrides for the new components ---------- */
[data-theme="light"] .header-quick-icon {
  background: rgba(24, 95, 165, 0.06);
  color: var(--color-text-primary);
  border-color: rgba(24, 95, 165, 0.2);
}
[data-theme="light"] .header-quick-icon:hover {
  background: rgba(24, 95, 165, 0.12);
  color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(24, 95, 165, 0.25);
}
[data-theme="light"] .header-quick-icon.active {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(24, 95, 165, 0.4);
}
[data-theme="light"] .quick-tooltip {
  background: #1B1B19;
  color: #fff;
  border-color: #1B1B19;
}
[data-theme="light"] .theme-pill.active {
  background: #fff;
  color: var(--color-primary);
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

/* ---------- User menu dropdown ---------- */
.user-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  background: transparent;
  border: none;
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast) ease, color var(--duration-fast) ease;
}
.user-menu-item:hover {
  background: rgba(0, 229, 255, 0.08);
  color: var(--color-primary);
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.3);
  transition: box-shadow var(--duration-fast) ease, transform var(--duration-fast) ease;
}
.avatar:hover { box-shadow: 0 0 24px rgba(0, 229, 255, 0.6); transform: scale(1.05); }

/* ---------- iOS-style toggle switch ---------- */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  cursor: pointer;
}
.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.toggle-switch .slider {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: background var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
}
.toggle-switch .slider::before {
  content: '';
  position: absolute;
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background: var(--color-text-secondary);
  border-radius: 50%;
  transition: transform var(--duration-base) var(--ease-out-quart), background var(--duration-fast) ease;
}
.toggle-switch input:checked + .slider {
  background: var(--gradient-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.4);
}
.toggle-switch input:checked + .slider::before {
  background: #06070C;
  transform: translateX(20px);
}
.toggle-switch input:focus-visible + .slider {
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.3);
}

/* Light-mode toggle */
[data-theme="light"] .toggle-switch .slider { background: #E5E5E0; border-color: #D0D0CB; }
[data-theme="light"] .toggle-switch input:checked + .slider { background: var(--color-primary); box-shadow: none; }
[data-theme="light"] .toggle-switch input:checked + .slider::before { background: #fff; }

/* ---------- Misc utilities ---------- */
.glow         { box-shadow: var(--shadow-glow); }
.glow-pink    { box-shadow: var(--shadow-glow-pink); }
.glow-violet  { box-shadow: var(--shadow-glow-violet); }

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border-strong), transparent);
  margin: 24px 0;
  border: none;
}

.subtitle { color: var(--color-text-secondary); font-size: 16px; line-height: 1.5; }
.muted    { color: var(--color-text-muted); }
.small    { font-size: 12px; color: var(--color-text-secondary); }
.success  { color: var(--color-text-success); }

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-shadow: 0 0 12px rgba(0, 229, 255, 0.5); }

.back-link {
  color: var(--color-primary);
  background: transparent;
  border: none;
  padding: 8px 0;
  font-size: 14px;
  cursor: pointer;
  font-family: var(--font-sans);
  margin-bottom: 16px;
}
.back-link:hover { text-shadow: 0 0 12px rgba(0, 229, 255, 0.5); }

/* ---------- Fade-in animation for screen transitions ---------- */
main > *,
#app > * {
  animation: screen-enter var(--duration-slow) var(--ease-out-quart);
}
@keyframes screen-enter {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Reduce-motion respect ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero::before, .hero::after { animation: none; }
}

/* ---------- Light theme override (un-futurifies when opted in) ---------- */
[data-theme="light"] body {
  background: var(--color-bg-page);
  color: var(--color-text-primary);
}
[data-theme="light"] body::before,
[data-theme="light"] body::after { display: none; }
[data-theme="light"] .site-header { background: var(--color-bg-card); }
[data-theme="light"] .card { background: var(--color-bg-card); backdrop-filter: none; }
[data-theme="light"] .btn-primary { background: var(--color-primary); color: #fff; box-shadow: none; }
[data-theme="light"] .hero h1 { background: var(--color-text-primary); -webkit-background-clip: text; color: transparent; animation: none; }