/* ============================================================
   CONCOURSE — a departures-board task inbox
   ============================================================ */

:root {
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Roboto Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", "Helvetica Neue", Arial, sans-serif;

  --board-bg: #0a0c0e;
  --board-bg-2: #0f1215;
  --board-panel: #15191c;
  --board-panel-hover: #1b2023;
  --board-line: #2a3033;
  --board-ink: #f2ede1;
  --board-muted: #9aa3aa;

  --amber: #ffb300;
  --amber-dim: #8a6816;
  --cyan: #5fe1e8;
  --red: #ff7a68;
  --green: #3fd98a;

  --paper: #f6f1e6;
  --paper-2: #efe6d2;
  --ink: #201a14;
  --ink-muted: #4a4438;
  --oxblood: #b23a1d;
  --line-on-paper: #d8cdb5;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--board-bg);
  color: var(--board-ink);
  font-family: var(--font-sans);
  line-height: 1.5;
  overflow-x: clip;
}

img {
  max-width: 100%;
  display: block;
}

.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;
  left: var(--space-3);
  top: -60px;
  background: var(--amber);
  color: #17140a;
  font-weight: 700;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top 180ms var(--ease);
}

.skip-link:focus {
  top: var(--space-3);
}

:focus {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* ============================================================
   HEADER / BOARD MASTHEAD
   ============================================================ */

.board-header {
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.015) 0px,
      rgba(255, 255, 255, 0.015) 1px,
      transparent 1px,
      transparent 3px
    ),
    radial-gradient(ellipse 120% 100% at 20% -10%, #1a2024 0%, transparent 60%),
    linear-gradient(180deg, var(--board-bg-2), var(--board-bg));
  border-bottom: 1px solid var(--board-line);
  padding: var(--space-6) var(--space-5) var(--space-5);
}

.board-header__inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-5);
}

.board-header__eyebrow {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber-dim);
}

.board-header__title {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(48px, 11vw, 128px);
  line-height: 0.92;
  letter-spacing: -0.01em;
  color: var(--amber);
  text-shadow: 0 0 28px rgba(255, 179, 0, 0.35);
}

.board-header__tagline {
  margin: var(--space-3) 0 0;
  color: var(--board-muted);
  font-size: 16px;
  max-width: 46ch;
}

.board-header__clock {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-1);
  font-family: var(--font-mono);
}

.board-header__clock-label {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--board-muted);
}

.board-header__clock-time {
  font-size: clamp(22px, 3vw, 34px);
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 18px rgba(95, 225, 232, 0.35);
}

.board-stats {
  max-width: 1280px;
  margin: var(--space-6) auto 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  background: var(--board-line);
  border: 1px solid var(--board-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.board-stats__item {
  background: var(--board-panel);
  padding: var(--space-4) var(--space-3);
  text-align: center;
}

.board-stats__item dt {
  margin: 0 0 var(--space-2);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--board-muted);
}

.board-stats__item dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 32px);
  font-variant-numeric: tabular-nums;
  color: var(--board-ink);
}

@media (max-width: 560px) {
  .board-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.board-stats__item--todo dd { color: var(--amber); }
.board-stats__item--in-progress dd { color: var(--cyan); }
.board-stats__item--blocked dd { color: var(--red); }
.board-stats__item--done dd { color: var(--green); }

/* ============================================================
   MAIN / TOOLBAR
   ============================================================ */

.concourse {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-5) var(--space-9);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: var(--space-4) var(--space-5);
  margin-bottom: var(--space-5);
}

.toolbar__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.toolbar__field--search {
  flex: 1 1 280px;
}

.toolbar__field--filter {
  flex: 0 1 260px;
}

.toolbar label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--board-muted);
}

.toolbar input,
.toolbar select {
  font: inherit;
  font-size: 16px;
  color: var(--board-ink);
  background: var(--board-panel);
  border: 1px solid var(--board-line);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  min-height: 44px;
}

.toolbar input::placeholder {
  color: var(--board-muted);
}

.toolbar input:focus,
.toolbar select:focus {
  outline: 2px solid var(--amber);
  outline-offset: 1px;
  border-color: var(--amber-dim);
}

@media (hover: hover) and (pointer: fine) {
  .toolbar input:hover,
  .toolbar select:hover {
    border-color: var(--amber-dim);
  }
}

.toolbar select {
  -webkit-appearance: none;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--amber) 50%),
    linear-gradient(135deg, var(--amber) 50%, transparent 50%);
  background-position: calc(100% - 20px) center, calc(100% - 14px) center;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: var(--space-8);
}

.toolbar__count {
  margin: 0;
  width: 100%;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--board-muted);
}

/* ============================================================
   BOARD LIST
   ============================================================ */

.board {
  border: 1px solid var(--board-line);
  border-radius: var(--radius-md);
  overflow: clip;
  background: var(--board-panel);
}

.board__columns {
  display: none;
  grid-template-columns: 84px 2fr 1fr 1fr 108px 168px;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--board-muted);
  border-bottom: 1px solid var(--board-line);
  background: var(--board-bg-2);
}

@media (min-width: 860px) {
  .board__columns {
    display: grid;
  }
}

.board__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.board-row {
  border-bottom: 1px solid var(--board-line);
}

.board-row:last-child {
  border-bottom: none;
}

.board-row__btn {
  all: unset;
  -webkit-appearance: none;
  appearance: none;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-4);
  cursor: pointer;
  color: var(--board-ink);
  min-height: 44px;
}

@media (min-width: 860px) {
  .board-row__btn {
    grid-template-columns: 84px 2fr 1fr 1fr 108px 168px;
    align-items: center;
    gap: var(--space-3);
  }
}

@media (hover: hover) and (pointer: fine) {
  .board-row__btn:hover {
    background: var(--board-panel-hover);
  }
  .board-row__btn:hover .board-row__title {
    color: var(--amber);
  }
}

.board-row__btn:active {
  transform: scale(0.997);
  background: var(--board-panel-hover);
}

.board-row__btn:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
  background: var(--board-panel-hover);
}

.board-row__code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber-dim);
  letter-spacing: 0.04em;
}

.board-row__title {
  font-weight: 600;
  font-size: 16px;
  transition: color 160ms var(--ease);
  text-align: left;
}

.board-row__gate,
.board-row__handler,
.board-row__due {
  font-size: 14px;
  color: var(--board-muted);
  display: flex;
  gap: var(--space-2);
  align-items: baseline;
  text-align: left;
}

.board-row__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--board-muted);
}

@media (min-width: 860px) {
  .board-row__label {
    display: none;
  }
}

.board-row__flap {
  display: inline-flex;
  justify-self: start;
}

.flap-text {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid currentColor;
  transform-origin: center 55%;
  backface-visibility: hidden;
}

.status-todo .flap-text {
  color: var(--amber);
  background: rgba(255, 179, 0, 0.1);
}

.status-in-progress .flap-text {
  color: var(--cyan);
  background: rgba(95, 225, 232, 0.1);
}

.status-blocked .flap-text {
  color: var(--red);
  background: rgba(255, 122, 104, 0.1);
}

.status-done .flap-text {
  color: var(--green);
  background: rgba(63, 217, 138, 0.1);
}

@keyframes flap-flip {
  0% { transform: rotateX(0deg); opacity: 1; }
  45% { transform: rotateX(-90deg); opacity: 0.4; }
  55% { transform: rotateX(-90deg); opacity: 0.4; }
  100% { transform: rotateX(0deg); opacity: 1; }
}

.flap-text.is-flipping {
  animation: flap-flip 480ms var(--ease);
}

@media (prefers-reduced-motion: reduce) {
  .flap-text.is-flipping {
    animation: none;
  }
}

/* ============================================================
   EMPTY STATE
   ============================================================ */

.empty-state {
  padding: var(--space-9) var(--space-5);
  text-align: center;
}

.empty-state__code {
  font-family: var(--font-mono);
  font-size: clamp(28px, 6vw, 48px);
  letter-spacing: 0.1em;
  color: var(--red);
  margin: 0 0 var(--space-3);
  text-shadow: 0 0 24px rgba(255, 122, 104, 0.3);
}

.empty-state h2 {
  margin: 0 0 var(--space-2);
  font-size: 20px;
}

.empty-state p:not(.empty-state__code) {
  color: var(--board-muted);
  margin: 0 0 var(--space-5);
}

.empty-state__clear {
  font: inherit;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--board-bg);
  background: var(--amber);
  border: none;
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-5);
  min-height: 44px;
  cursor: pointer;
  transition: transform 160ms var(--ease), background 160ms var(--ease);
}

@media (hover: hover) and (pointer: fine) {
  .empty-state__clear:hover {
    background: #ffc94d;
  }
}

.empty-state__clear:active {
  transform: scale(0.97);
}

.empty-state__clear:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ============================================================
   FOOTER
   ============================================================ */

.board-footer {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-5) var(--space-8);
  border-top: 1px solid var(--board-line);
}

.board-footer p {
  margin: 0;
  color: var(--board-muted);
  font-size: 13px;
}

/* ============================================================
   OVERLAY + DETAIL (BOARDING PASS)
   ============================================================ */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 6, 7, 0.72);
  backdrop-filter: blur(2px);
  z-index: 100;
  animation: overlay-in 200ms var(--ease);
}

@keyframes overlay-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .overlay {
    animation: none;
  }
}

.detail {
  position: fixed;
  inset: 0;
  z-index: 101;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  overflow-y: auto;
}

.detail[hidden] {
  display: none;
}

.detail__pass {
  background: var(--paper);
  color: var(--ink);
  width: 100%;
  max-width: 640px;
  margin: auto;
  border-radius: var(--radius-lg);
  display: grid;
  grid-template-columns: 140px 1fr;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  animation: pass-in 260ms var(--ease);
  position: relative;
}

@keyframes pass-in {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .detail__pass {
    animation: none;
  }
}

@media (max-width: 620px) {
  .detail__pass {
    grid-template-columns: 1fr;
  }
}

.detail__stub {
  background: var(--paper-2);
  border-right: 2px dashed var(--line-on-paper);
  padding: var(--space-5) var(--space-4);
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  position: relative;
}

@media (max-width: 620px) {
  .detail__stub {
    border-right: none;
    border-bottom: 2px dashed var(--line-on-paper);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
  }
}

.detail__stub-label {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.detail__stub-code,
.detail__stub-value {
  margin: 0 0 var(--space-4);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  color: var(--oxblood);
}

.detail__stub-value {
  font-size: 15px;
  color: var(--ink);
}

.detail__stub-divider {
  display: none;
}

@media (max-width: 620px) {
  .detail__stub-divider {
    display: block;
    width: 1px;
    align-self: stretch;
    background: var(--line-on-paper);
  }
}

.detail__stub-perforation {
  display: none;
}

@media (min-width: 621px) {
  .detail__stub-perforation {
    display: block;
    position: absolute;
    right: -7px;
    top: 0;
    bottom: 0;
    width: 14px;
    background-image: radial-gradient(circle, var(--board-bg) 5px, transparent 5.5px);
    background-size: 14px 22px;
    background-repeat: repeat-y;
  }
}

.detail__main {
  padding: var(--space-6) var(--space-5) var(--space-6);
  position: relative;
}

.detail__close {
  all: unset;
  -webkit-appearance: none;
  appearance: none;
  box-sizing: border-box;
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line-on-paper);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  min-height: 44px;
  cursor: pointer;
  transition: background 160ms var(--ease), transform 160ms var(--ease);
}

@media (hover: hover) and (pointer: fine) {
  .detail__close:hover {
    background: var(--paper-2);
  }
}

.detail__close:active {
  transform: scale(0.96);
}

.detail__close:focus-visible {
  outline: 2px solid var(--oxblood);
  outline-offset: 2px;
}

.detail__eyebrow {
  margin: 0 0 var(--space-3);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding-right: 120px;
}

.detail__status-wrap {
  display: inline-flex;
}

.detail__status-wrap .flap-text {
  padding: 3px 10px;
  font-size: 10px;
}

.detail__title {
  margin: 0 0 var(--space-5);
  font-size: clamp(22px, 4vw, 30px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  padding-right: 20px;
}

.detail__meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--line-on-paper);
  border-bottom: 1px solid var(--line-on-paper);
  margin-bottom: var(--space-5);
}

.detail__meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.detail__meta-item span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.detail__meta-item strong {
  font-size: 15px;
  font-weight: 600;
}

.detail__tags {
  list-style: none;
  margin: 0 0 var(--space-5);
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.detail__tags li {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 1px solid var(--oxblood);
  color: var(--oxblood);
  border-radius: 999px;
  padding: var(--space-1) var(--space-3);
}

.detail__body {
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  margin-bottom: var(--space-6);
  max-width: 62ch;
}

.detail__body p {
  margin: 0 0 var(--space-4);
}

.detail__body p:last-child {
  margin-bottom: 0;
}

.detail__status-block {
  border-top: 2px dashed var(--line-on-paper);
  padding-top: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 360px;
}

.detail__status-block label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.detail__status-block select {
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-on-paper);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-8) var(--space-3) var(--space-4);
  min-height: 44px;
  -webkit-appearance: none;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--oxblood) 50%),
    linear-gradient(135deg, var(--oxblood) 50%, transparent 50%);
  background-position: calc(100% - 20px) center, calc(100% - 14px) center;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  cursor: pointer;
}

.detail__status-block select:focus-visible {
  outline: 2px solid var(--oxblood);
  outline-offset: 2px;
}

@media (hover: hover) and (pointer: fine) {
  .detail__status-block select:hover {
    border-color: var(--oxblood);
  }
}

.detail__feedback {
  min-height: 20px;
  margin: var(--space-2) 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--oxblood);
  opacity: 0;
  transform: translateY(-2px);
  transition: opacity 200ms var(--ease), transform 200ms var(--ease);
}

.detail__feedback.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .detail__feedback {
    transition: opacity 1ms linear;
  }
}