/* ============================================================
   webapp.css — ILSTC Route Planner & Cost Comparator
   Reuses the design tokens from styles.css
   ============================================================ */

.app-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.app-btn {
  border: 0; cursor: pointer; font-family: inherit;
  font-size: 12.5px; font-weight: 700;
  padding: 9px 15px; border-radius: var(--r-pill);
  display: inline-flex; align-items: center; gap: 7px;
  text-decoration: none; transition: all .2s ease;
}
.app-btn.ghost { background: var(--paper-3); color: var(--ink); }
.app-btn.ghost:hover { background: var(--line-2); }
.app-btn.pdf { background: #b91c1c; color: #fff; box-shadow: 0 4px 12px rgba(185,28,28,.3); }
.app-btn.pptx { background: #c2410c; color: #fff; box-shadow: 0 4px 12px rgba(194,65,12,.3); }
.app-btn.deck { background: linear-gradient(135deg, var(--brand), var(--brand-secondary)); color: #fff; box-shadow: 0 4px 12px rgba(14,116,144,.3); }
.app-btn:hover { transform: translateY(-2px); }
.app-btn:disabled { opacity: .6; cursor: wait; transform: none; }

.app-main { max-width: 1240px; margin: 0 auto; padding: 28px 24px 90px; }

.app-hero { margin-bottom: 22px; }
.app-hero .eyebrow { font-size: 12px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--brand); }
.app-hero h1 { font-size: clamp(26px, 4vw, 40px); font-weight: 800; letter-spacing: -1px; color: var(--ink); margin: 6px 0 8px; line-height: 1.1; }
.app-hero p { font-size: 15px; color: var(--ink-3); max-width: 820px; line-height: 1.6; }
.app-hero b { color: var(--ink); }

.planner { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 22px; align-items: start; }
@media (max-width: 940px) { .planner { grid-template-columns: 1fr; } }

.panel {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 22px; box-shadow: var(--shadow-sm);
}
.panel h3 { font-size: 15px; font-weight: 700; color: var(--ink); margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }

/* route endpoints */
.od-row { display: flex; align-items: center; gap: 12px; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r-md); padding: 14px 16px; margin-bottom: 18px; }
.od-point { text-align: center; flex: 1; }
.od-point .od-flag { font-size: 22px; }
.od-point .od-name { font-size: 13.5px; font-weight: 700; color: var(--ink); margin-top: 2px; }
.od-point .od-sub { font-size: 10.5px; color: var(--muted); }
.od-arrow { font-size: 20px; color: var(--brand); }

/* mode selector */
.mode-select { display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.mode-card {
  display: flex; align-items: center; gap: 14px;
  border: 1.5px solid var(--line-2); border-radius: var(--r-md);
  padding: 13px 16px; cursor: pointer; transition: all .18s ease; background: #fff;
}
.mode-card:hover { border-color: var(--brand); transform: translateX(2px); }
.mode-card.sel { border-color: var(--brand); background: color-mix(in srgb, var(--brand) 7%, #fff); box-shadow: var(--shadow-sm); }
.mode-emoji { font-size: 26px; }
.mode-info { flex: 1; }
.mode-info h4 { font-size: 14.5px; font-weight: 700; color: var(--ink); }
.mode-info p { font-size: 11.5px; color: var(--ink-3); line-height: 1.45; margin-top: 2px; }
.mode-radio { width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--line-2); flex-shrink: 0; position: relative; }
.mode-card.sel .mode-radio { border-color: var(--brand); }
.mode-card.sel .mode-radio::after { content: ''; position: absolute; inset: 3px; border-radius: 50%; background: var(--brand); }

/* digital toggle */
.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; background: linear-gradient(135deg, #eef2ff, #fff); border: 1px solid var(--line); border-radius: var(--r-md); padding: 14px 16px; }
.toggle-row .tr-text h4 { font-size: 13.5px; font-weight: 700; color: var(--ink); }
.toggle-row .tr-text p { font-size: 11px; color: var(--ink-3); margin-top: 2px; }
.switch { position: relative; width: 48px; height: 26px; flex-shrink: 0; cursor: pointer; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch .slider-ui { position: absolute; inset: 0; background: var(--line-2); border-radius: 999px; transition: .25s; }
.switch .slider-ui::before { content: ''; position: absolute; width: 20px; height: 20px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: .25s; box-shadow: 0 1px 3px rgba(0,0,0,.3); }
.switch input:checked + .slider-ui { background: var(--section-digital, #6366f1); }
.switch input:checked + .slider-ui::before { transform: translateX(22px); }

/* result metrics */
.result-metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 18px; }
.rm-card { background: linear-gradient(180deg, #fff, var(--paper-2)); border: 1px solid var(--line); border-radius: var(--r-md); padding: 16px 18px; text-align: center; }
.rm-card.wide { grid-column: span 2; }
.rm-n { font-size: 30px; font-weight: 800; letter-spacing: -1px; color: var(--brand); line-height: 1; }
.rm-card.amber .rm-n { color: var(--brand-accent); }
.rm-card.green .rm-n { color: var(--success); }
.rm-card.indigo .rm-n { color: var(--section-digital, #6366f1); }
.rm-l { font-size: 12px; color: var(--ink-3); margin-top: 7px; }
.route-desc { font-size: 13px; color: var(--ink-3); background: var(--paper-2); border-left: 3px solid var(--brand); border-radius: 0 var(--r-sm) var(--r-sm) 0; padding: 12px 14px; line-height: 1.55; }
.route-desc b { color: var(--ink); }

/* journey strip */
.journey { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 8px; justify-content: center; background: linear-gradient(160deg, #ecfeff, #f0f9ff); border: 1px solid var(--line); border-radius: var(--r-md); padding: 16px 12px; margin-bottom: 18px; }
.j-node { text-align: center; min-width: 56px; }
.j-flag { font-size: 22px; line-height: 1; }
.j-name { font-size: 10px; font-weight: 700; color: var(--ink); margin-top: 3px; line-height: 1.2; }
.j-leg { display: flex; flex-direction: column; align-items: center; color: var(--muted); }
.j-leg span { font-size: 9px; font-weight: 600; }
.j-leg::before { content: '→'; font-size: 16px; color: var(--brand); line-height: 1; }

/* comparison charts */
.charts-section { margin-top: 24px; }
.charts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 16px; }
.chart-block { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 20px; box-shadow: var(--shadow-sm); }
.chart-block h4 { font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.chart-note { font-size: 11px; color: var(--muted); margin-bottom: 14px; }
.bar-row { display: grid; grid-template-columns: 124px 1fr auto; align-items: center; gap: 10px; margin-bottom: 11px; }
.bar-label { font-size: 11.5px; font-weight: 600; color: var(--ink-2); text-align: right; line-height: 1.25; }
.bar-track { background: var(--paper-3); border-radius: 999px; height: 22px; overflow: hidden; position: relative; }
.bar-fill { height: 100%; border-radius: 999px; width: 0; transition: width .9s cubic-bezier(.2,1,.3,1); }
.bar-fill.ilstc { background: linear-gradient(90deg, #0e7490, #22d3ee); }
.bar-fill.rail { background: linear-gradient(90deg, #ca8a04, #f59e0b); }
.bar-fill.yangtze { background: linear-gradient(90deg, #475569, #94a3b8); }
.bar-fill.hl { box-shadow: inset 0 0 0 2px rgba(255,255,255,.5); }
.bar-val { font-size: 12.5px; font-weight: 800; color: var(--ink); min-width: 40px; text-align: right; }

.app-foot { text-align: center; font-size: 11.5px; color: var(--muted); padding: 24px; border-top: 1px solid var(--line); margin-top: 30px; }
.disclaimer { font-size: 11.5px; color: var(--muted); background: var(--paper-2); border: 1px dashed var(--line-2); border-radius: var(--r-sm); padding: 10px 14px; margin-top: 16px; line-height: 1.5; }

@media print { .app-topbar, .app-actions, .app-foot { display: none; } }