.material-symbols-rounded {
  font-family: 'Material Symbols Rounded';
  font-style: normal;
  font-size: 1em;
  line-height: 1;
  vertical-align: -0.125em;
  user-select: none;
}

/* ── Utility ── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ── Tokens ── */
:root {
  --bg:           #f5f5f5;
  --surface:      #ffffff;
  --border:       rgba(0,0,0,0.07);
  --border-soft:  rgba(0,0,0,0.04);
  --text:         #111827;
  --text-2:       #374151;
  --text-muted:   #9ca3af;
  --accent:       #2563eb;
  --card-shadow:  0 0 0 1px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.06);

  /* rate type colours */
  --off-bg:   #f0fdf4; --off-fg:  #15803d;
  --peak-bg:  #fff7ed; --peak-fg: #c2410c;
  --hol-bg:   #eff6ff; --hol-fg:  #1d4ed8;

  /* best card — green highlight */
  --best-border:   #22c55e;
  --best-bg:       #f0fdf4;
  --best-shadow:   0 0 0 2px #22c55e, 0 4px 16px rgba(34,197,94,0.12);
  --best-badge-bg: #16a34a;
  --best-badge-fg: #ffffff;
}

body.dark {
  --bg:          #0d1117;
  --surface:     #161b22;
  --border:      rgba(255,255,255,0.07);
  --border-soft: rgba(255,255,255,0.04);
  --text:        #f0f6fc;
  --text-2:      #c9d1d9;
  --text-muted:  #6e7681;
  --accent:      #58a6ff;
  --card-shadow: 0 0 0 1px rgba(255,255,255,0.06);

  --off-bg:   rgba(21,128,61,.15); --off-fg:  #4ade80;
  --peak-bg:  rgba(194,65,12,.15); --peak-fg: #fb923c;
  --hol-bg:   rgba(29,78,216,.15); --hol-fg:  #93c5fd;

  /* best card dark — green glow */
  --best-border:   #4ade80;
  --best-bg:       rgba(34,197,94,0.06);
  --best-shadow:   0 0 0 2px #4ade80, 0 4px 20px rgba(34,197,94,0.18);
  --best-badge-bg: #4ade80;
  --best-badge-fg: #052e16;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 28px 16px 48px;
  -webkit-font-smoothing: antialiased;
}

.page { max-width: 480px; margin: 0 auto; }

/* ── Header ── */
.page-header { margin-bottom: 20px; }

h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 3px;
}

.subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ── Control card ── */
.control-card {
  background: var(--surface);
  box-shadow: var(--card-shadow);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 12px;
}

/* Shortcuts */
#shortcuts {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.shortcut-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 5px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-2);
  transition: background .12s, border-color .12s, color .12s;
  white-space: nowrap;
}

.shortcut-btn:hover,
.shortcut-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Day + time row */
.pick-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.pick-row select {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  outline: none;
  cursor: pointer;
  appearance: none;
  transition: border-color .12s;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%239ca3af' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}

body.dark .pick-row select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%236e7681' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
}

.pick-row select:focus {
  border-color: var(--accent);
}



/* ── Transition hint ── */
.transition-hint {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 10px;
}

.transition-hint .material-symbols-rounded {
  font-size: 1.1em;
  color: var(--text-muted);
}

/* ── Cards ── */
#cardList { display: flex; flex-direction: column; gap: 14px; }

.provider-card {
  background: var(--surface);
  box-shadow: var(--card-shadow);
  border-radius: 12px;
  padding: 16px;
  transition: box-shadow .15s;
}

.provider-card.is-best {
  background: var(--best-bg);
  box-shadow: var(--best-shadow);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 8px;
  gap: 8px;
}

.card-name-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.card-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.badge-best {
  font-size: 0.7rem;
  font-weight: 700;
  background: var(--best-badge-bg);
  color: var(--best-badge-fg);
  padding: 3px 10px;
  border-radius: 10px;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

/* ── Season Badge ── */
.season-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  flex-shrink: 0;
}

.summer-badge {
  background: rgba(234, 88, 12, 0.12);
  color: #ea580c;
}

body.dark .summer-badge {
  background: rgba(251, 146, 60, 0.15);
  color: #fb923c;
}

.fallback-badge {
  background: rgba(107, 114, 128, 0.1);
  color: var(--text-muted);
}

.pending-badge {
  background: rgba(245, 158, 11, 0.12);
  color: #d97706;
}

body.dark .pending-badge {
  background: rgba(251, 191, 36, 0.15);
  color: #fbbf24;
}

/* is-best rate colour — green accent */
.provider-card.is-best .card-rate {
  color: var(--best-badge-bg);
}

.rate-tag {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 3px 8px;
  border-radius: 6px;
  white-space: nowrap;
  flex-shrink: 0;
}

.rate-tag.off-peak { background: var(--off-bg); color: var(--off-fg); }
.rate-tag.peak     { background: var(--peak-bg); color: var(--peak-fg); }
.rate-tag.holiday  { background: var(--hol-bg);  color: var(--hol-fg); }

.card-rate {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
}



.rate-unit {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0;
}

.card-note {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ── Schedule section ── */
.schedule-section {
  margin-top: 20px;
}

#scheduleToggle {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: background .12s;
}

#scheduleToggle:hover { background: var(--border-soft); }

.schedule-wrap {
  display: none;
  background: var(--surface);
  box-shadow: var(--card-shadow);
  border-radius: 0 0 12px 12px;
  overflow: hidden;
  margin-top: -1px;
}

.schedule-wrap.open { display: block; }

#scheduleToggle.open-btn {
  border-radius: 10px 10px 0 0;
  border-bottom: 1px solid var(--border-soft);
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.schedule-table th {
  background: var(--border-soft);
  padding: 8px 12px;
  font-weight: 700;
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-align: left;
}

.schedule-table th.num,
.schedule-table td.num { text-align: right; }

.schedule-table td {
  padding: 10px 12px;
  border-top: 1px solid var(--border-soft);
  color: var(--text-2);
  font-weight: 500;
}

.schedule-table td.peak-cell {
  color: var(--peak-fg);
  font-weight: 700;
}

.schedule-note {
  padding: 10px 12px;
  font-size: 0.7rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-soft);
  line-height: 1.6;
}

/* ── Footer ── */
.site-footer {
  margin-top: 24px;
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.meta-info {
  margin-bottom: 12px;
  font-size: 0.68rem;
  text-align: left;
}

.approaching-warning {
  font-size: 0.72rem;
  color: #ef4444;
  font-weight: 600;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--border);
  line-height: 1.4;
}

body.dark .approaching-warning {
  color: #f87171;
}

.year-warning {
  color: #d97706;
  font-weight: 600;
  font-size: 0.72rem;
  display: inline-block;
  margin-top: 4px;
}

body.dark .year-warning {
  color: #fbbf24;
}

.copyright {
  font-size: 0.72rem;
}

.footer-controls { margin-bottom: 10px; }

.toggle-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.72rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: border-color .12s, color .12s;
}

.toggle-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.site-footer a {
  color: var(--accent);
  text-decoration: none;
}

.site-footer a:hover { text-decoration: underline; }

@media (max-width: 380px) {
  h1 { font-size: 1.4rem; }
  .card-rate { font-size: 1.7rem; }
  .shortcut-btn { font-size: 0.72rem; padding: 4px 10px; }
}