/*
 * AMT Toolkit — Airline Operations visual overhaul
 *
 * Visual-only layer. The existing DOM, IDs, copy, data attributes and event
 * handlers remain untouched so the calculators, saved-state flows and compact
 * extension layouts keep working as before.
 *
 * Preview the three art directions with:
 *   /?design=atlas    (default: Airport Operations)
 *   /?design=terminal (Departure Board)
 *   /?design=lounge   (Executive Lounge)
 */

:root,
html[data-design="atlas"] {
  --amt-bg: #06101b;
  --amt-bg-deep: #030812;
  --amt-panel: #0a1827;
  --amt-panel-raised: #102337;
  --amt-panel-soft: rgba(11, 29, 47, 0.88);
  --amt-panel-glass: rgba(7, 18, 31, 0.84);
  --amt-line: rgba(133, 174, 201, 0.18);
  --amt-line-strong: rgba(93, 205, 227, 0.38);
  --amt-text: #eef7fb;
  --amt-muted: #8ca5b8;
  --amt-subtle: #607d93;
  --amt-accent: #39cce3;
  --amt-accent-strong: #0799bd;
  --amt-accent-soft: rgba(57, 204, 227, 0.13);
  --amt-accent-ink: #03131c;
  --amt-gold: #f3b64b;
  --amt-positive: #5bd7a1;
  --amt-danger: #fb858b;
  --amt-radius: 15px;
  --amt-radius-sm: 10px;
  --amt-shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
  --amt-shadow-soft: 0 9px 28px rgba(0, 0, 0, 0.24);
  --amt-grid: rgba(112, 181, 211, 0.065);
  --amt-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html[data-design="terminal"] {
  --amt-bg: #0b1117;
  --amt-bg-deep: #070b10;
  --amt-panel: #111b24;
  --amt-panel-raised: #172633;
  --amt-panel-soft: rgba(16, 27, 37, 0.95);
  --amt-panel-glass: rgba(11, 18, 25, 0.94);
  --amt-line: rgba(167, 205, 216, 0.18);
  --amt-line-strong: rgba(255, 181, 76, 0.52);
  --amt-text: #f6f6ec;
  --amt-muted: #9aabb0;
  --amt-subtle: #6c7f86;
  --amt-accent: #ffb54c;
  --amt-accent-strong: #d9892c;
  --amt-accent-soft: rgba(255, 181, 76, 0.12);
  --amt-accent-ink: #191006;
  --amt-gold: #c9e77c;
  --amt-positive: #9be47d;
  --amt-danger: #ff7f7f;
  --amt-radius: 9px;
  --amt-radius-sm: 6px;
  --amt-shadow: 0 20px 52px rgba(0, 0, 0, 0.42);
  --amt-shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.3);
  --amt-grid: rgba(174, 210, 217, 0.075);
  --amt-display: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

html[data-design="lounge"] {
  --amt-bg: #0a0b1b;
  --amt-bg-deep: #070711;
  --amt-panel: #14152a;
  --amt-panel-raised: #1c1d37;
  --amt-panel-soft: rgba(20, 21, 42, 0.91);
  --amt-panel-glass: rgba(12, 12, 29, 0.86);
  --amt-line: rgba(190, 183, 226, 0.2);
  --amt-line-strong: rgba(241, 139, 126, 0.46);
  --amt-text: #fbf7f2;
  --amt-muted: #b5afc8;
  --amt-subtle: #817a9d;
  --amt-accent: #f28d7f;
  --amt-accent-strong: #cc625e;
  --amt-accent-soft: rgba(242, 141, 127, 0.14);
  --amt-accent-ink: #1f0e12;
  --amt-gold: #e4c57b;
  --amt-positive: #86d6b0;
  --amt-danger: #f28d7f;
  --amt-radius: 19px;
  --amt-radius-sm: 12px;
  --amt-shadow: 0 26px 75px rgba(0, 0, 0, 0.38);
  --amt-shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.28);
  --amt-grid: rgba(195, 183, 230, 0.055);
  --amt-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* -------------------------------------------------------------------------- */
/* Global stage                                                                */
/* -------------------------------------------------------------------------- */

body {
  background:
    radial-gradient(circle at 8% -10%, color-mix(in srgb, var(--amt-accent) 18%, transparent), transparent 34rem),
    radial-gradient(circle at 92% 6%, color-mix(in srgb, var(--amt-gold) 9%, transparent), transparent 30rem),
    linear-gradient(180deg, var(--amt-bg) 0%, var(--amt-bg-deep) 72%);
  color: var(--amt-text);
  font-family: var(--amt-display);
  letter-spacing: -0.01em;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.72;
  background-image:
    linear-gradient(to right, var(--amt-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--amt-grid) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black, transparent 86%);
}

body::after {
  content: '';
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  pointer-events: none;
  z-index: 4;
  background: linear-gradient(90deg, transparent, var(--amt-accent), transparent);
  opacity: 0.28;
}

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

body > header {
  position: sticky !important;
  z-index: 30;
}

::selection {
  background: var(--amt-accent);
  color: var(--amt-accent-ink);
}

/* Full web shell: compact extension mode intentionally keeps its dense layout. */
body:not(.amt-compact-mode) > header {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--amt-bg-deep) 88%, transparent) !important;
  border-bottom: 1px solid var(--amt-line) !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
}

body:not(.amt-compact-mode) > header::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent 4%, var(--amt-accent) 42%, var(--amt-gold) 58%, transparent 96%);
  opacity: 0.45;
}

body:not(.amt-compact-mode) > header > div {
  width: min(1440px, calc(100% - 48px));
  max-width: none !important;
  padding: 14px 0 !important;
  gap: 20px !important;
}

body:not(.amt-compact-mode) > main {
  max-width: 1440px !important;
  padding-top: 34px !important;
  padding-bottom: 50px !important;
}

#header_brand_logo {
  min-width: 214px;
  gap: 11px !important;
}

#header_brand_logo img {
  width: 40px !important;
  height: 40px !important;
  border-radius: 12px !important;
  border: 1px solid color-mix(in srgb, var(--amt-accent) 42%, transparent);
  background: var(--amt-panel);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--amt-accent) 8%, transparent), 0 8px 24px rgba(0, 0, 0, 0.28) !important;
}

#header_brand_logo .text-base {
  color: var(--amt-text) !important;
  font-size: 0.98rem !important;
  letter-spacing: 0.01em;
}

#header_brand_logo .text-xs {
  color: var(--amt-subtle) !important;
  font-size: 0.64rem !important;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

body:not(.amt-compact-mode) header nav {
  flex: 1 1 auto;
  justify-content: center;
  padding: 4px;
  border: 1px solid var(--amt-line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--amt-panel) 76%, transparent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

body:not(.amt-compact-mode) header nav button {
  min-height: 34px;
  border-radius: 8px !important;
  padding: 0 12px !important;
  color: var(--amt-muted) !important;
  border-color: transparent !important;
  font-size: 0.69rem !important;
  letter-spacing: 0.01em;
  transition: background 160ms ease, color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

body:not(.amt-compact-mode) header nav button:hover {
  color: var(--amt-text) !important;
  background: color-mix(in srgb, var(--amt-accent) 9%, transparent) !important;
}

body:not(.amt-compact-mode) header nav button.tab-btn-active {
  color: var(--amt-accent) !important;
  background: var(--amt-accent-soft) !important;
  border-color: color-mix(in srgb, var(--amt-accent) 30%, transparent) !important;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--amt-accent) 8%, transparent), 0 4px 12px rgba(0, 0, 0, 0.16) !important;
}

body:not(.amt-compact-mode) header nav .pulse-dot {
  background: var(--amt-accent) !important;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--amt-accent) 12%, transparent);
}

#btn_open_sync_modal,
#header_get_addon {
  min-height: 34px;
  border-radius: 9px !important;
  border-color: var(--amt-line) !important;
  background: var(--amt-panel) !important;
  color: var(--amt-muted) !important;
}

#btn_open_sync_modal:hover,
#header_get_addon:hover {
  border-color: color-mix(in srgb, var(--amt-accent) 50%, transparent) !important;
  background: var(--amt-accent-soft) !important;
  color: var(--amt-text) !important;
}

#header_get_addon {
  background: var(--amt-accent) !important;
  color: var(--amt-accent-ink) !important;
  border-color: color-mix(in srgb, var(--amt-accent) 65%, transparent) !important;
}

#header_get_addon:hover {
  background: color-mix(in srgb, var(--amt-accent) 84%, white) !important;
  color: var(--amt-accent-ink) !important;
}

/* Shared surfaces */
.glass-panel,
.glass-card {
  background: linear-gradient(145deg, color-mix(in srgb, var(--amt-panel) 96%, transparent), color-mix(in srgb, var(--amt-bg-deep) 92%, transparent)) !important;
  border-color: var(--amt-line) !important;
  box-shadow: var(--amt-shadow-soft) !important;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.glass-panel {
  border-radius: var(--amt-radius) !important;
}

.glass-card {
  border-radius: var(--amt-radius-sm) !important;
}

.glass-panel:hover,
.glass-card:hover {
  border-color: color-mix(in srgb, var(--amt-accent) 35%, var(--amt-line)) !important;
}

/* -------------------------------------------------------------------------- */
/* Homepage / command deck                                                     */
/* -------------------------------------------------------------------------- */

#view_home {
  position: relative;
}


.hero-carousel {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  min-height: 400px !important;
  overflow: hidden;
  border-radius: 22px !important;
  border: 1px solid var(--amt-line-strong) !important;
  background:
    linear-gradient(106deg, color-mix(in srgb, var(--amt-panel) 96%, transparent) 0%, color-mix(in srgb, var(--amt-bg-deep) 92%, transparent) 68%),
    radial-gradient(circle at 80% 55%, color-mix(in srgb, var(--amt-accent) 12%, transparent), transparent 22rem) !important;
  box-shadow: var(--amt-shadow) !important;
}

.hero-carousel::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.68;
  background:
    linear-gradient(90deg, transparent 0 58%, color-mix(in srgb, var(--amt-accent) 10%, transparent) 58% 58.1%, transparent 58.1%),
    repeating-linear-gradient(90deg, transparent 0 74px, color-mix(in srgb, var(--amt-accent) 9%, transparent) 74px 75px),
    repeating-linear-gradient(0deg, transparent 0 47px, color-mix(in srgb, var(--amt-accent) 6%, transparent) 47px 48px);
  mask-image: linear-gradient(90deg, transparent, black 17%, black 82%, transparent);
}

.hero-carousel::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--amt-accent), color-mix(in srgb, var(--amt-accent) 18%, transparent) 62%, transparent);
  opacity: 0.85;
}

.hero-carousel .slide > .grid {
  min-height: 400px !important;
}

.hero-carousel .slide > .grid > div:first-child {
  padding: clamp(30px, 4vw, 58px) !important;
}

.hero-carousel h1 {
  max-width: 650px;
  color: var(--amt-text) !important;
  font-size: clamp(2.25rem, 4.1vw, 4.45rem) !important;
  line-height: 0.99 !important;
  letter-spacing: -0.065em !important;
}

.hero-carousel h1 .cyan,
.hero-carousel .cyan {
  color: var(--amt-accent) !important;
}

.hero-carousel .slide > .grid > div:first-child > div:first-child {
  color: var(--amt-accent) !important;
  background: var(--amt-accent-soft) !important;
  border-color: color-mix(in srgb, var(--amt-accent) 38%, transparent) !important;
  letter-spacing: 0.16em;
}

.hero-carousel .slide > .grid > div:first-child > p {
  max-width: 470px;
  color: var(--amt-muted) !important;
  font-size: 0.82rem !important;
  line-height: 1.8 !important;
}

.hero-carousel .slide > .grid > div:first-child a,
.hero-carousel .slide > .grid > div:first-child button {
  min-height: 40px;
  border-radius: 9px !important;
  padding-inline: 15px !important;
}

.hero-carousel .slide > .grid > div:first-child a {
  background: var(--amt-accent) !important;
  color: var(--amt-accent-ink) !important;
  box-shadow: 0 9px 24px color-mix(in srgb, var(--amt-accent) 20%, transparent) !important;
}

.hero-carousel .slide > .grid > div:first-child button {
  background: color-mix(in srgb, var(--amt-panel-raised) 84%, transparent) !important;
  border-color: var(--amt-line) !important;
  color: var(--amt-text) !important;
}

.hero-carousel .slide > .grid > div:first-child kbd {
  background: color-mix(in srgb, var(--amt-bg-deep) 82%, transparent) !important;
  border-color: var(--amt-line) !important;
  color: var(--amt-gold) !important;
}

/* The fake game/side-panel artwork in the hero is treated like a live ops
   monitor, not a generic card. */
.hero-carousel .slide > .grid > div:last-child {
  padding: 21px 28px 21px 6px !important;
}

.hero-carousel .slide > .grid > div:last-child > div {
  border-radius: 16px !important;
  border-color: var(--amt-line-strong) !important;
  background: color-mix(in srgb, var(--amt-bg-deep) 94%, transparent) !important;
  box-shadow: 0 22px 45px rgba(0, 0, 0, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.04) !important;
}

.hero-carousel .slide-dot {
  background: color-mix(in srgb, var(--amt-muted) 42%, transparent) !important;
}

.hero-carousel .slide-dot.active {
  background: var(--amt-accent) !important;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--amt-accent) 14%, transparent), 0 0 18px color-mix(in srgb, var(--amt-accent) 38%, transparent) !important;
}

.tool-section {
  margin-top: 42px !important;
}

.tool-section-header {
  margin-bottom: 17px !important;
  align-items: flex-end !important;
}

.tool-section-header h2,
#install-guide h2,
#homepage_changelog_section h2 {
  color: var(--amt-text) !important;
  letter-spacing: -0.045em !important;
}

.tool-section-header p,
.section-heading p,
#install-guide p {
  color: var(--amt-muted) !important;
}

.kofi-support {
  border-color: color-mix(in srgb, var(--amt-gold) 30%, transparent) !important;
  background: linear-gradient(135deg, color-mix(in srgb, var(--amt-gold) 9%, var(--amt-panel)), var(--amt-panel)) !important;
  box-shadow: none !important;
}

.kofi-support:hover {
  border-color: color-mix(in srgb, var(--amt-gold) 65%, transparent) !important;
  box-shadow: 0 10px 28px color-mix(in srgb, var(--amt-gold) 10%, transparent) !important;
}

.tools-grid {
  gap: 13px !important;
}

.tool-card {
  min-height: 238px;
  padding: 19px 18px 0 !important;
  border-radius: var(--amt-radius) !important;
  border-color: var(--amt-line) !important;
  background: linear-gradient(145deg, color-mix(in srgb, var(--amt-panel) 96%, transparent), color-mix(in srgb, var(--amt-bg-deep) 92%, transparent)) !important;
  box-shadow: var(--amt-shadow-soft);
  position: relative;
  overflow: hidden;
  contain: layout paint;
}

.tool-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  height: 3px;
  background: var(--tool-color, var(--amt-accent));
  opacity: 0.82;
}

.tool-card:hover {
  transform: translateY(-5px) !important;
  border-color: color-mix(in srgb, var(--tool-color, var(--amt-accent)) 62%, var(--amt-line)) !important;
  background: linear-gradient(145deg, color-mix(in srgb, var(--tool-color, var(--amt-accent)) 11%, var(--amt-panel)), var(--amt-bg-deep)) !important;
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.34), 0 0 0 1px color-mix(in srgb, var(--tool-color, var(--amt-accent)) 10%, transparent) !important;
}

.tool-icon {
  width: 42px !important;
  height: 42px !important;
  border-radius: 12px !important;
  background: color-mix(in srgb, var(--tool-color, var(--amt-accent)) 12%, var(--amt-panel)) !important;
  border-color: color-mix(in srgb, var(--tool-color, var(--amt-accent)) 34%, transparent) !important;
}

.tool-card h3 {
  margin-top: 18px !important;
  color: var(--amt-text) !important;
  font-size: 1rem !important;
}

.tool-card > p {
  color: var(--amt-muted) !important;
  font-size: 0.72rem !important;
  line-height: 1.75 !important;
}

.tool-tags span {
  background: color-mix(in srgb, var(--amt-panel-raised) 70%, transparent) !important;
  border-color: var(--amt-line) !important;
  color: var(--amt-subtle) !important;
}

.tool-link {
  border-top-color: var(--amt-line) !important;
  color: var(--tool-color, var(--amt-accent)) !important;
  letter-spacing: 0.01em;
}

#install-guide {
  margin-top: 55px;
  padding-top: 0 !important;
}

/* Defer layout/paint work for homepage content below the first viewport. */
#install-guide,
#homepage_changelog_section {
  content-visibility: auto;
  contain-intrinsic-size: 640px;
}

#install-guide > div:first-child > span {
  color: var(--amt-accent) !important;
  letter-spacing: 0.2em !important;
}

#install-guide .glass-card {
  min-height: 214px;
  border-color: var(--amt-line) !important;
}

#install-guide code,
#install-guide .font-mono {
  color: var(--amt-accent) !important;
}

#homepage_changelog_section {
  margin-top: 18px;
}

#homepage_changelog_section .glass-panel {
  border-color: var(--amt-line) !important;
}

/* -------------------------------------------------------------------------- */
/* Tool views: clear hierarchy, runway-like rails and denser scan pattern      */
/* -------------------------------------------------------------------------- */

body:not(.amt-compact-mode) #view_zero_out,
body:not(.amt-compact-mode) #view_seat_config,
body:not(.amt-compact-mode) #view_route_finder,
body:not(.amt-compact-mode) #view_circuit_finder {
  --amt-section-gap: 18px;
  position: relative;
}

body:not(.amt-compact-mode) #view_zero_out::before,
body:not(.amt-compact-mode) #view_seat_config::before,
body:not(.amt-compact-mode) #view_route_finder::before,
body:not(.amt-compact-mode) #view_circuit_finder::before {
  content: '';
  display: block;
  height: 2px;
  margin-bottom: 19px;
  background: linear-gradient(90deg, var(--amt-accent), color-mix(in srgb, var(--amt-accent) 20%, transparent) 52%, transparent 96%);
  opacity: 0.8;
}

body:not(.amt-compact-mode) #view_zero_out > .glass-panel,
body:not(.amt-compact-mode) #view_seat_config > .glass-panel,
body:not(.amt-compact-mode) #view_route_finder .glass-panel,
body:not(.amt-compact-mode) #view_circuit_finder .glass-panel,
body:not(.amt-compact-mode) #view_route_finder details,
body:not(.amt-compact-mode) #view_circuit_finder details {
  border-color: var(--amt-line) !important;
  box-shadow: var(--amt-shadow-soft) !important;
}

body:not(.amt-compact-mode) #view_zero_out h2,
body:not(.amt-compact-mode) #view_seat_config h2,
body:not(.amt-compact-mode) #view_route_finder h2,
body:not(.amt-compact-mode) #view_circuit_finder h2 {
  color: var(--amt-text) !important;
  letter-spacing: -0.04em;
}

body:not(.amt-compact-mode) #view_zero_out h3,
body:not(.amt-compact-mode) #view_seat_config h3,
body:not(.amt-compact-mode) #view_route_finder h3,
body:not(.amt-compact-mode) #view_circuit_finder h3 {
  color: var(--amt-text) !important;
}

body:not(.amt-compact-mode) #view_zero_out p,
body:not(.amt-compact-mode) #view_seat_config p,
body:not(.amt-compact-mode) #view_route_finder p,
body:not(.amt-compact-mode) #view_circuit_finder p {
  color: var(--amt-muted);
}

body:not(.amt-compact-mode) #view_zero_out input:not([type="checkbox"]):not([type="radio"]),
body:not(.amt-compact-mode) #view_zero_out select,
body:not(.amt-compact-mode) #view_zero_out textarea,
body:not(.amt-compact-mode) #view_seat_config input:not([type="checkbox"]):not([type="radio"]),
body:not(.amt-compact-mode) #view_seat_config select,
body:not(.amt-compact-mode) #view_seat_config textarea,
body:not(.amt-compact-mode) #view_route_finder input:not([type="checkbox"]):not([type="radio"]),
body:not(.amt-compact-mode) #view_route_finder select,
body:not(.amt-compact-mode) #view_route_finder textarea,
body:not(.amt-compact-mode) #view_circuit_finder input:not([type="checkbox"]):not([type="radio"]),
body:not(.amt-compact-mode) #view_circuit_finder select,
body:not(.amt-compact-mode) #view_circuit_finder textarea {
  background: color-mix(in srgb, var(--amt-bg-deep) 74%, var(--amt-panel)) !important;
  border-color: var(--amt-line) !important;
  border-radius: var(--amt-radius-sm) !important;
  color: var(--amt-text) !important;
  min-height: 37px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.025);
}

body:not(.amt-compact-mode) #view_zero_out input:not([type="checkbox"]):not([type="radio"]):focus,
body:not(.amt-compact-mode) #view_zero_out select:focus,
body:not(.amt-compact-mode) #view_seat_config input:not([type="checkbox"]):not([type="radio"]):focus,
body:not(.amt-compact-mode) #view_seat_config select:focus,
body:not(.amt-compact-mode) #view_route_finder input:not([type="checkbox"]):not([type="radio"]):focus,
body:not(.amt-compact-mode) #view_route_finder select:focus,
body:not(.amt-compact-mode) #view_circuit_finder input:not([type="checkbox"]):not([type="radio"]):focus,
body:not(.amt-compact-mode) #view_circuit_finder select:focus {
  border-color: var(--amt-accent) !important;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--amt-accent) 13%, transparent) !important;
  outline: none;
}

body:not(.amt-compact-mode) #view_zero_out button,
body:not(.amt-compact-mode) #view_seat_config button,
body:not(.amt-compact-mode) #view_route_finder button,
body:not(.amt-compact-mode) #view_circuit_finder button {
  border-radius: var(--amt-radius-sm) !important;
}

body:not(.amt-compact-mode) #view_zero_out button:focus-visible,
body:not(.amt-compact-mode) #view_seat_config button:focus-visible,
body:not(.amt-compact-mode) #view_route_finder button:focus-visible,
body:not(.amt-compact-mode) #view_circuit_finder button:focus-visible,
body:not(.amt-compact-mode) header button:focus-visible,
body:not(.amt-compact-mode) a:focus-visible {
  outline: 2px solid var(--amt-accent) !important;
  outline-offset: 3px;
}

/* Control headers read like section labels in an operations console. */
body:not(.amt-compact-mode) #view_zero_out .border-b,
body:not(.amt-compact-mode) #view_seat_config .border-b,
body:not(.amt-compact-mode) #view_route_finder .border-b,
body:not(.amt-compact-mode) #view_circuit_finder .border-b {
  border-color: var(--amt-line) !important;
}

body:not(.amt-compact-mode) #view_route_finder .grid > .glass-panel,
body:not(.amt-compact-mode) #view_circuit_finder .grid > .glass-panel {
  min-height: 100%;
}

body:not(.amt-compact-mode) #view_route_finder .grid,
body:not(.amt-compact-mode) #view_circuit_finder .grid {
  align-items: stretch;
}

/* KPI strips */
body:not(.amt-compact-mode) #view_zero_out [class*="grid-cols-4"] > div,
body:not(.amt-compact-mode) #view_seat_config [class*="grid-cols-4"] > div,
body:not(.amt-compact-mode) #view_route_finder [class*="grid-cols-4"] > div,
body:not(.amt-compact-mode) #view_circuit_finder [class*="grid-cols-4"] > div {
  border-color: var(--amt-line) !important;
}

/* Tables and timelines keep a strong visual axis for scanning. */
body:not(.amt-compact-mode) table {
  border-collapse: separate !important;
  border-spacing: 0 !important;
}

body:not(.amt-compact-mode) thead th {
  color: var(--amt-subtle) !important;
  background: color-mix(in srgb, var(--amt-bg-deep) 72%, var(--amt-panel)) !important;
  border-bottom-color: var(--amt-line) !important;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.62rem !important;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

body:not(.amt-compact-mode) tbody tr {
  border-color: var(--amt-line) !important;
  transition: background 160ms ease;
}

body:not(.amt-compact-mode) tbody tr:hover {
  background: color-mix(in srgb, var(--amt-accent) 5%, transparent) !important;
}

body:not(.amt-compact-mode) .timeline-day-track {
  height: 39px;
  background: color-mix(in srgb, var(--amt-bg-deep) 86%, var(--amt-panel)) !important;
  border-color: var(--amt-line) !important;
}

body:not(.amt-compact-mode) .timeline-flight-block {
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

/* Drawer / modal treatment stays within the same airport-control language. */
body:not(.amt-compact-mode) [id$="_modal_backdrop"],
body:not(.amt-compact-mode) [id*="_modal_backdrop"] {
  background: rgba(2, 8, 18, 0.78) !important;
  backdrop-filter: blur(9px);
}

body:not(.amt-compact-mode) [id$="_modal_backdrop"] > div,
body:not(.amt-compact-mode) [id*="_modal_backdrop"] > div {
  border-color: var(--amt-line-strong) !important;
  border-radius: var(--amt-radius) !important;
  background: var(--amt-panel) !important;
  box-shadow: var(--amt-shadow) !important;
}

/* Footer */
body:not(.amt-compact-mode) > footer {
  background: color-mix(in srgb, var(--amt-bg-deep) 88%, transparent) !important;
  border-color: var(--amt-line) !important;
}

body:not(.amt-compact-mode) > footer a:hover {
  color: var(--amt-accent) !important;
}

/* -------------------------------------------------------------------------- */
/* Art-direction variants                                                      */
/* -------------------------------------------------------------------------- */

html[data-design="terminal"] body:not(.amt-compact-mode) > header > div {
  padding-block: 10px !important;
}

html[data-design="terminal"] #header_brand_logo .text-base,
html[data-design="terminal"] body:not(.amt-compact-mode) header nav button,
html[data-design="terminal"] .tool-category,
html[data-design="terminal"] .section-kicker {
  font-family: 'JetBrains Mono', ui-monospace, monospace !important;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

html[data-design="terminal"] .hero-carousel {
  border-radius: 10px !important;
  background: linear-gradient(112deg, #121c24, #0a1015 70%) !important;
}

html[data-design="terminal"] .hero-carousel::before {
  opacity: 0.8;
  background:
    repeating-linear-gradient(90deg, transparent 0 94px, rgba(255, 181, 76, 0.08) 94px 95px),
    repeating-linear-gradient(0deg, transparent 0 38px, rgba(255, 181, 76, 0.055) 38px 39px);
}

html[data-design="terminal"] .hero-carousel h1 {
  max-width: 620px;
  font-size: clamp(2rem, 3.75vw, 3.75rem) !important;
  letter-spacing: -0.07em !important;
}

html[data-design="terminal"] .hero-carousel .slide > .grid > div:last-child > div,
html[data-design="terminal"] .tool-card,
html[data-design="terminal"] .glass-panel,
html[data-design="terminal"] .glass-card {
  border-radius: 8px !important;
}


html[data-design="lounge"] body::before {
  background-image:
    radial-gradient(circle at 20% 30%, rgba(242, 141, 127, 0.08) 0 1px, transparent 1px),
    radial-gradient(circle at 70% 65%, rgba(228, 197, 123, 0.08) 0 1px, transparent 1px);
  background-size: 31px 31px, 47px 47px;
  mask-image: linear-gradient(to bottom, black, transparent 93%);
}

html[data-design="lounge"] #header_brand_logo img {
  border-radius: 14px !important;
}

html[data-design="lounge"] body:not(.amt-compact-mode) header nav {
  border-radius: 999px;
  padding-inline: 6px;
}

html[data-design="lounge"] body:not(.amt-compact-mode) header nav button {
  border-radius: 999px !important;
}

html[data-design="lounge"] .hero-carousel {
  border-radius: 26px !important;
  background:
    linear-gradient(111deg, rgba(20, 21, 42, 0.97), rgba(10, 10, 25, 0.94) 66%),
    radial-gradient(circle at 82% 54%, rgba(242, 141, 127, 0.12), transparent 25rem) !important;
}

html[data-design="lounge"] .hero-carousel h1 {
  font-size: clamp(2.35rem, 4vw, 4.55rem) !important;
  letter-spacing: -0.075em !important;
}

html[data-design="lounge"] .tool-card,
html[data-design="lounge"] .glass-panel,
html[data-design="lounge"] .glass-card {
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.24), inset 0 1px 0 rgba(255, 255, 255, 0.035) !important;
}

html[data-design="lounge"] .tool-card::before {
  height: 4px;
  opacity: 0.6;
}

/* -------------------------------------------------------------------------- */
/* Responsive and accessibility guardrails                                    */
/* -------------------------------------------------------------------------- */

@media (max-width: 1120px) {
  body:not(.amt-compact-mode) > header > div {
    width: min(100% - 32px, 1440px);
    flex-wrap: wrap;
  }

  #header_brand_logo {
    min-width: auto;
  }

  body:not(.amt-compact-mode) header nav {
    order: 3;
    flex-basis: 100%;
    justify-content: flex-start;
    overflow-x: auto;
  }

  body:not(.amt-compact-mode) header nav button {
    flex: 0 0 auto;
  }
}

@media (max-width: 720px) {
  body:not(.amt-compact-mode) > main {
    padding-top: 22px !important;
    padding-inline: 15px !important;
  }

  body:not(.amt-compact-mode) > header > div {
    width: calc(100% - 28px);
    gap: 11px !important;
  }

  #btn_open_sync_modal,
  #header_get_addon {
    padding-inline: 10px !important;
  }

  .hero-carousel,
  .hero-carousel .slide > .grid {
    min-height: 0 !important;
  }

  .hero-carousel .slide > .grid > div:first-child {
    padding: 30px 23px 24px !important;
  }

  .hero-carousel h1 {
    font-size: clamp(2.2rem, 11vw, 3.35rem) !important;
  }

  .hero-carousel .slide > .grid > div:last-child {
    padding: 7px 15px 22px !important;
  }

  .tool-section-header {
    align-items: flex-start !important;
    flex-direction: column;
  }

  .kofi-support {
    width: 100%;
  }

  .tools-grid {
    grid-template-columns: 1fr 1fr !important;
  }
}

@media (max-width: 460px) {
  .tools-grid {
    grid-template-columns: 1fr !important;
  }

  .tool-card {
    min-height: 205px;
  }

  #header_brand_logo .text-xs {
    display: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  body *, body *::before, body *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}