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

/* ── Theme tokens — dark (default) ─────────────────── */
:root {
  /* Apple HIG semantic colours — dark */
  --bg:              #000000;
  --bg-secondary:    #0A0A0A;
  --surface:         #1C1C1E;
  --surface-raised:  #2C2C2E;
  --border:          rgba(255,255,255,0.10);
  --separator:       rgba(255,255,255,0.07);

  /* Labels */
  --label:           #FFFFFF;
  --label-secondary: rgba(235,235,245,0.60);
  --label-tertiary:  rgba(235,235,245,0.30);
  --label-quaternary:rgba(235,235,245,0.14);

  /* Frosted-glass overlay */
  --glass-bg:        rgba(10,10,10,0.90);

  /* Wiener Linien brand */
  --burgring:        #FF3B30;
  --burgring-dim:    rgba(255,59,48,0.18);
  --burgring-bar:    rgba(255,59,48,0.28);
  --rudolfsheim:     #0A84FF;
  --rudolfsheim-dim: rgba(10,132,255,0.18);
  --rudolfsheim-bar: rgba(10,132,255,0.28);

  /* System */
  --orange:          #FF9F0A;
  --yellow:          #FFD60A;
  --warn-text:       #000000;
  --green:           #30D158;

  /* Geometry */
  --radius:          10px;
  --radius-sm:       6px;
  --radius-pill:     100px;

  /* Typography */
  --font:         -apple-system, "SF Pro Text", "Helvetica Neue", system-ui, sans-serif;
  --font-rounded: -apple-system, "SF Pro Rounded", "Helvetica Neue", system-ui, sans-serif;
  --font-display: -apple-system, "SF Pro Display", "Helvetica Neue", system-ui, sans-serif;
}

/* ── Theme tokens — light ───────────────────────────── */
[data-theme="light"] {
  --bg:              #F2F2F7;
  --bg-secondary:    #FFFFFF;
  --surface:         #E5E5EA;
  --surface-raised:  #D1D1D6;
  --border:          rgba(60,60,67,0.16);
  --separator:       rgba(60,60,67,0.10);

  --label:           #000000;
  --label-secondary: rgba(60,60,67,0.60);
  --label-tertiary:  rgba(60,60,67,0.30);
  --label-quaternary:rgba(60,60,67,0.14);

  --glass-bg:        rgba(242,242,247,0.90);

  --burgring:        #FF3B30;
  --burgring-dim:    rgba(255,59,48,0.12);
  --burgring-bar:    rgba(255,59,48,0.20);
  --rudolfsheim:     #007AFF;
  --rudolfsheim-dim: rgba(0,122,255,0.12);
  --rudolfsheim-bar: rgba(0,122,255,0.20);

  --orange:          #FF9500;
  --yellow:          #FFCC00;
  --warn-text:       #000000;
  --green:           #34C759;
}

/* ── System preference fallback ────────────────────── */
@media (prefers-color-scheme: light) {
  [data-theme="system"] {
    --bg:              #F2F2F7;
    --bg-secondary:    #FFFFFF;
    --surface:         #E5E5EA;
    --surface-raised:  #D1D1D6;
    --border:          rgba(60,60,67,0.16);
    --separator:       rgba(60,60,67,0.10);
    --label:           #000000;
    --label-secondary: rgba(60,60,67,0.60);
    --label-tertiary:  rgba(60,60,67,0.30);
    --label-quaternary:rgba(60,60,67,0.14);
    --glass-bg:        rgba(242,242,247,0.90);
    --burgring:        #FF3B30;
    --burgring-dim:    rgba(255,59,48,0.12);
    --burgring-bar:    rgba(255,59,48,0.20);
    --rudolfsheim:     #007AFF;
    --rudolfsheim-dim: rgba(0,122,255,0.12);
    --rudolfsheim-bar: rgba(0,122,255,0.20);
    --orange:          #FF9500;
    --yellow:          #FFCC00;
    --warn-text:       #000000;
    --green:           #34C759;
  }
}

/* ── Base ───────────────────────────────────────────── */
html, body {
  height: 100%;
  background: var(--bg);
  color: var(--label);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
}

/* ── Header ─────────────────────────────────────────── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 0 20px;
  height: 52px;
  border-bottom: 1px solid var(--separator);
  background: var(--glass-bg);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.line-badge {
  background: var(--burgring);
  color: #fff;
  font-family: var(--font-rounded);
  font-size: 0.95rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.2px;
  white-space: nowrap;
  flex-shrink: 0;
}

header h1 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* subtitle gone — only shown in modal README */

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.header-actions > button,
.header-actions .menu-wrap > button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--label-secondary);
  padding: 6px 14px;
  min-height: 36px;
  min-width: 44px;
  box-sizing: border-box;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.12s, color 0.12s;
}
.header-actions > button svg,
.header-actions .menu-wrap > button svg {
  width: 15px; height: 15px; flex-shrink: 0;
}
.header-actions > button:hover,
.header-actions .menu-wrap > button:hover {
  background: var(--surface-raised);
  color: var(--label);
}
.header-actions > button:focus-visible,
.header-actions .menu-wrap > button:focus-visible {
  outline: 2px solid var(--burgring);
  outline-offset: 2px;
}
.header-actions button:disabled { opacity: 0.35; cursor: not-allowed; }
#btn-refresh.spinning svg { animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Overflow menu ───────────────────────────────────── */
.menu-wrap { position: relative; }
#btn-menu svg { width: 15px; height: 15px; }

.overflow-menu {
  display: none;
  position: fixed;   /* fixed = outside every stacking context */
  min-width: 180px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  padding: 6px;
  z-index: 9999;     /* above header, footer, modal backdrop — everything */
  transform-origin: top right;
  animation: menu-in 0.12s ease;
}
.overflow-menu.open { display: block; }
@keyframes menu-in {
  from { opacity: 0; transform: scale(0.95) translateY(-4px); }
  to   { opacity: 1; transform: scale(1)    translateY(0); }
}
.menu-section-label {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--label-tertiary);
  padding: 4px 10px 2px;
}
.menu-divider {
  height: 1px;
  background: var(--separator);
  margin: 4px 0;
}
.menu-item {
  display: flex;
  align-items: center;
  width: 100%;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--label);
  font-size: 0.875rem;
  font-weight: 400;
  padding: 8px 10px;
  height: 36px;
  cursor: pointer;
  text-align: left;
  transition: background 0.1s;
  gap: 8px;
}
.menu-item .mi-icon {
  display: flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; flex-shrink: 0;
}
.menu-item .mi-icon svg { width: 16px; height: 16px; color: var(--label-secondary); }
.menu-item .mi-label { flex: 1; white-space: nowrap; }
.menu-item:hover { background: var(--surface-raised); }
.menu-item:focus-visible { outline: 2px solid var(--burgring); outline-offset: -2px; }
.menu-item[aria-checked="true"] { font-weight: 600; }
.menu-item[aria-checked="true"] .mi-icon svg { color: var(--burgring); }
.menu-item[aria-checked="true"]::after {
  content: '';
  display: block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--burgring);
  flex-shrink: 0;
  margin-left: auto;
}

/* Simulator items use a different accent colour */
.menu-item--sim[aria-checked="true"] .mi-icon svg { color: var(--orange); }
.menu-item--sim[aria-checked="true"]::after { background: var(--orange); }

/* ── Main — departure board layout ──────────────────── */
main {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

/* ── Direction panel ─────────────────────────────────── */
.dir-col {
  display: flex;
  flex-direction: column;
}
.dir-col.dir-burgring { border-right: 1px solid var(--separator); }

/* ── Direction header row ────────────────────────────── */
.dir-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px 10px;
  border-bottom: 1px solid var(--separator);
}
.dir-arrow {
  font-size: 1.1rem;
  font-weight: 900;
  flex-shrink: 0;
  line-height: 1;
}
.dir-burgring    .dir-arrow { color: var(--burgring); }
.dir-rudolfsheim .dir-arrow { color: var(--rudolfsheim); }

.dir-name-label {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.3px;
  text-transform: uppercase;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.dir-burgring    .dir-name-label { color: var(--burgring); }
.dir-rudolfsheim .dir-name-label { color: var(--rudolfsheim); }

.dir-takt {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1px;
  flex-shrink: 0;
}
.dir-takt .iv-label {
  text-transform: uppercase;
  letter-spacing: 0.6px;
  font-size: 0.58rem;
  color: var(--label-tertiary);
  font-weight: 600;
  line-height: 1;
}
.dir-takt .iv-value {
  font-size: 0.95rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.dir-burgring    .dir-takt .iv-value { color: var(--burgring); }
.dir-rudolfsheim .dir-takt .iv-value { color: var(--rudolfsheim); }
.dir-takt .iv-range {
  font-size: 0.62rem;
  color: var(--label-tertiary);
  line-height: 1;
}
.dir-takt .iv-range--warn { color: var(--orange); }

/* ── Next departure hero row ─────────────────────────── */
.next-block {
  padding: 16px 20px 14px;
  border-bottom: 1px solid var(--separator);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Top row: compact time + countdown */
.next-top {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.next-label {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 600;
  color: var(--label-tertiary);
  align-self: center;
  flex-shrink: 0;
}
.next-countdown {
  font-family: var(--font-rounded);
  font-size: 3.8rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
  line-height: 1;
  letter-spacing: -2px;
}
.dir-burgring    .next-countdown { color: var(--burgring); }
.dir-rudolfsheim .next-countdown { color: var(--rudolfsheim); }
.next-block.jetzt .next-countdown {
  color: var(--orange) !important;
  animation: pulse 1s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.35} }

.next-unit {
  font-size: 1rem;
  font-weight: 500;
  color: var(--label-secondary);
  letter-spacing: 0;
}
.next-meta {
  margin-left: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 3px;
}
.next-time {
  font-size: 1.15rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--label);
}
.next-delay {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: transparent;
  background: transparent;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  width: fit-content;
  visibility: hidden;
  white-space: nowrap;
}
.next-delay.visible {
  color: #fff;
  background: var(--orange);
  visibility: visible;
}

/* ── Progress bar ────────────────────────────────────── */
.progress-wrap {
  position: relative;
  height: 4px;
  background: var(--separator);
  border-radius: 2px;
  overflow: hidden;
}
.progress-bar {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  border-radius: 2px;
  transition: width 1s linear;
  min-width: 4px;
}
.dir-burgring    .progress-bar { background: var(--burgring); }
.dir-rudolfsheim .progress-bar { background: var(--rudolfsheim); }
.next-block.jetzt .progress-bar { background: var(--orange); }
/* Shimmer on the leading edge */
.progress-bar::after {
  content: '';
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 20px;
  background: linear-gradient(to right, transparent, rgba(255,255,255,0.35));
  border-radius: 2px;
}

/* stale */
.next-block.stale .progress-bar { background: var(--yellow); }

/* ── Subsequent departures list ──────────────────────── */
ul.departures {
  list-style: none;
  flex: 1;
}
ul.departures li {
  display: grid;
  grid-template-columns: 58px 1fr auto auto;
  align-items: center;
  gap: 10px;
  padding: 11px 20px;
  border-bottom: 1px solid var(--separator);
  font-size: 0.9375rem; /* 15px */
  min-height: 44px;
  position: relative;
}
ul.departures li:last-child { border-bottom: none; }

/* Left accent via pseudo-element */
ul.departures li::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
}
.dir-burgring    ul.departures li::before { background: var(--burgring-dim); }
.dir-rudolfsheim ul.departures li::before { background: var(--rudolfsheim-dim); }
ul.departures li.delayed::before { background: var(--orange); }

.dep-countdown {
  font-family: var(--font-rounded);
  font-size: 0.9375rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
  text-align: right;
  line-height: 1;
}
.dep-countdown-unit {
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--label-secondary);
}
.dir-burgring    ul.departures li .dep-countdown { color: var(--burgring); }
.dir-rudolfsheim ul.departures li .dep-countdown { color: var(--rudolfsheim); }

.dep-time {
  font-size: 0.9rem;
  color: var(--label-secondary);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}
.dep-delay {
  font-size: 0.68rem;
  color: #fff;
  background: var(--orange);
  padding: 2px 6px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  white-space: nowrap;
}
/* line badge removed — always 57A, no need to repeat */
.dep-line { display: none; }

ul.departures li.soon .dep-countdown { color: var(--orange); }

ul.departures li.loading,
ul.departures li.error {
  grid-template-columns: 1fr;
  color: var(--label-secondary);
  font-style: italic;
}
ul.departures li.error {
  color: #FF453A;
  font-style: normal;
}

/* ── First / last service row ────────────────────────── */
.dir-schedule {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 20px;
  border-top: 1px solid var(--separator);
  font-size: 0.72rem;
  color: var(--label-tertiary);
  gap: 8px;
  min-height: 32px;
}
.dir-schedule:empty { display: none; }
.sched-item {
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}
.sched-label {
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  font-size: 0.62rem;
  color: var(--label-tertiary);
}
.sched-time {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: 0.78rem;
  color: var(--label-secondary);
}

/* ── Footer ─────────────────────────────────────────── */
footer {
  padding: 8px 20px;
  padding-bottom: calc(8px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--separator);
  background: var(--glass-bg);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--label-secondary);
  position: sticky;
  bottom: 0;
  z-index: 5;
}
.footer-left  { display: flex; align-items: center; gap: 8px; }
.footer-right { display: flex; align-items: center; gap: 8px; }

.btn-clients {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--label-secondary);
  font-size: 0.75rem;
  padding: 2px 8px;
  cursor: pointer;
  line-height: 1.5;
}
.btn-clients:hover { background: var(--surface); color: var(--label); }
.btn-clients:focus-visible { outline: 2px solid var(--burgring); outline-offset: 2px; }

.footer-copy { color: var(--label-tertiary); }
.footer-install {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--label-secondary);
  text-decoration: none;
  font-size: 0.75rem;
}
.footer-install:hover { color: var(--label); }
#version-badge { color: var(--label-tertiary); font-variant-numeric: tabular-nums; }

#stale-badge {
  display: none;
  background: var(--yellow);
  color: var(--warn-text);
  font-weight: 700;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  animation: warn-flash 1s ease-in-out infinite;
}
#stale-badge.visible { display: inline-flex; align-items: center; gap: 4px; }
@keyframes warn-flash { 0%,100%{opacity:1} 50%{opacity:0.5} }

#sim-badge {
  display: none;
  background: var(--orange);
  color: #000;
  font-weight: 700;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}
#sim-badge.visible { display: inline-flex; align-items: center; gap: 4px; }

/* ── Modal ──────────────────────────────────────────── */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 100;
}
@media (min-height: 500px) {
  .modal { align-items: center; padding: 20px; }
}
.modal.hidden { display: none; }

.modal-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 8px 24px 32px;
  max-width: 540px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
}
@media (min-height: 500px) {
  .modal-box {
    border-radius: var(--radius);
    padding: 24px 24px 28px;
    max-height: 80vh;
  }
}
.modal-box::before {
  content: '';
  display: block;
  width: 36px; height: 4px;
  background: var(--label-quaternary);
  border-radius: 2px;
  margin: 0 auto 16px;
}
@media (min-height: 500px) {
  .modal-box::before { display: none; }
}
.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--surface-raised);
  border: none;
  border-radius: 50%;
  color: var(--label-secondary);
  font-size: 0.85rem;
  font-weight: 700;
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.modal-close:hover { background: var(--border); color: var(--label); }
#modal-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -0.1px;
}
#modal-body {
  font-size: 0.875rem;
  color: var(--label-secondary);
  line-height: 1.7;
  white-space: pre-wrap;
}
#modal-body .clients-table {
  white-space: normal;
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}
#modal-body .clients-table th {
  text-align: left;
  color: var(--label);
  font-weight: 600;
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
}
#modal-body .clients-table td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--separator);
  color: var(--label-secondary);
}
#modal-body .clients-table tr:last-child td { border-bottom: none; }

/* ── Responsive — iPhone ─────────────────────────────── */
@media (max-width: 640px) {
  main { grid-template-columns: 1fr; }

  .dir-col.dir-burgring {
    border-right: none;
    border-bottom: 2px solid var(--separator);
  }

  header {
    padding: 0 16px;
    padding-top: env(safe-area-inset-top);
    height: calc(52px + env(safe-area-inset-top));
  }

  footer {
    padding-left:  max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
  }

  .dir-header { padding: 12px 16px 10px; }
  .next-block { padding: 14px 16px 12px; }
  .next-countdown { font-size: 3.2rem; }
  ul.departures li { padding: 11px 16px; }

  .modal-close { width: 32px; height: 32px; }
}