:root {
  --dut-blue: #0B4DA2;
  --dut-blue-dark: #083a7c;
  --dut-blue-soft: #eaf1fb;
  --ink: #1b2330;
  --ink-2: #4a5568;
  --ink-3: #7b8698;
  --line: #e3e8ef;
  --bg: #f5f7fa;
  --card: #ffffff;
  --ok: #1a7f52;
  --warn: #b26a00;
  --warn-bg: #fff6e6;
  --danger: #b3261e;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(16, 24, 40, .06), 0 1px 2px rgba(16, 24, 40, .04);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ------------------------------------------------------------------ topbar */
.topbar {
  background: linear-gradient(135deg, var(--dut-blue) 0%, var(--dut-blue-dark) 100%);
  color: #fff;
  padding: 0 0 0;
}

.topbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 16px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }

.brand-mark {
  width: 44px; height: 44px;
  flex: 0 0 44px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .28);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 15px; letter-spacing: .5px;
}

.brand-text { min-width: 0; }
.brand-text h1 { margin: 0; font-size: 20px; font-weight: 700; letter-spacing: .5px; }
.brand-text p { margin: 1px 0 0; font-size: 12.5px; opacity: .82; }

.lang-toggle {
  flex: 0 0 auto;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .3);
  color: #fff;
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: flex; gap: 4px;
}
.lang-toggle:hover { background: rgba(255, 255, 255, .24); }
.lang-toggle .lt-active { color: #ffd66b; }
.lang-toggle .lt-idle { opacity: .55; }
.lang-toggle .lt-zh,
.lang-toggle .lt-en { display: inline-block; padding: 0 2px; transition: color .15s, opacity .15s; }
.lang-toggle .lt-sep { opacity: .38; font-weight: 400; }

.statbar {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 16px 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 12.5px;
  opacity: .9;
}
.statbar b { font-weight: 700; font-size: 15px; }

.tabs {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }

.tab {
  flex: 0 0 auto;
  background: transparent;
  border: 0;
  border-bottom: 3px solid transparent;
  color: rgba(255, 255, 255, .72);
  padding: 10px 14px 9px;
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.tab:hover { color: #fff; }
.tab.active { color: #fff; border-bottom-color: #ffd66b; }

/* -------------------------------------------------------------------- body */
.wrap { max-width: 1180px; margin: 0 auto; padding: 16px; }

.view { display: none; }
.view.active { display: block; }

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.panel + .results { margin-top: 14px; }

.panel-title { margin: 0 0 4px; font-size: 17px; font-weight: 700; }
.panel-desc { margin: 0 0 14px; font-size: 13px; color: var(--ink-2); }

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 12px;
}
.filters:last-child { margin-bottom: 0; }

.field {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 150px;
  flex: 1 1 170px;
}
.field.grow { flex: 2 1 240px; }
.field > span { font-size: 12.5px; color: var(--ink-2); font-weight: 600; }

select, input[type="search"] {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  padding: 9px 11px;
  font-size: 14px;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: none;
}
select {
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath fill='%237b8698' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}
select:focus, input[type="search"]:focus { border-color: var(--dut-blue); box-shadow: 0 0 0 3px var(--dut-blue-soft); }

.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }

.btn {
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
}
.btn.primary { background: var(--dut-blue); color: #fff; }
.btn.primary:hover { background: var(--dut-blue-dark); }
.btn.ghost { background: #fff; color: var(--dut-blue); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--dut-blue); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 6px 13px;
  font-size: 13px;
  font-family: inherit;
  color: var(--ink-2);
  cursor: pointer;
}
.chip:hover { border-color: var(--dut-blue); color: var(--dut-blue); }
.chip.on { background: var(--dut-blue); border-color: var(--dut-blue); color: #fff; }

.chiprow {
  display: flex; flex-wrap: wrap; gap: 8px;
  font-size: 12.5px; color: var(--ink-2);
}

.disclaimer {
  margin: 12px 0 0;
  padding: 10px 12px;
  background: var(--warn-bg);
  border-left: 3px solid var(--warn);
  border-radius: 0 6px 6px 0;
  font-size: 12.5px;
  color: #6b4a12;
}

/* ------------------------------------------------------------------ results */
.results { display: flex; flex-direction: column; gap: 14px; }

.sec-title {
  font-size: 14px; font-weight: 700; color: var(--ink-2);
  padding-bottom: 6px; border-bottom: 2px solid var(--line);
  margin: 0 0 2px;
}

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 12px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}

.card-head { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; }
.card-title { font-size: 15.5px; font-weight: 700; margin: 0; }
.card-title-en { font-size: 12px; color: var(--ink-3); font-weight: 400; margin: 1px 0 0; }
.card-meta { margin: 6px 0 0; font-size: 12.5px; color: var(--ink-2); }
.card-meta .sep { color: var(--line); margin: 0 6px; }

.badge {
  flex: 0 0 auto;
  font-size: 11.5px;
  border-radius: 999px;
  padding: 3px 9px;
  font-weight: 600;
  white-space: nowrap;
}
.badge.rank { background: var(--dut-blue-soft); color: var(--dut-blue); }
.badge.price { background: #eaf7f0; color: var(--ok); }
.badge.conf-high { background: #e6f6ec; color: #106b3f; }
.badge.conf-midhigh { background: #eaf7f0; color: #1a7f52; }
.badge.conf-mid { background: #fff6e6; color: #8a5a00; }
.badge.conf-low { background: #fdecea; color: var(--danger); }

.tagrow { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 9px; }
.tag {
  font-size: 11.5px; padding: 2px 8px; border-radius: 5px;
  background: #f0f3f8; color: var(--ink-2); border: 1px solid #e6eaf1;
}
.tag.t-spicy { background: #fdecea; color: #a8322a; border-color: #f7d9d6; }
.tag.t-light { background: #eaf7f0; color: #106b3f; border-color: #cdead9; }
.tag.t-vegetarian { background: #eaf7f0; color: #106b3f; border-color: #cdead9; }
.tag.t-halal { background: #eaf7f0; color: #106b3f; border-color: #cdead9; }
.tag.t-fried { background: #fff6e6; color: #8a5a00; border-color: #f4e2bf; }
.tag.t-heavy { background: #fff6e6; color: #8a5a00; border-color: #f4e2bf; }
.tag.t-soupy { background: #eaf1fb; color: var(--dut-blue); border-color: #d3e0f5; }

.dishlist { margin: 10px 0 0; padding: 0; list-style: none; max-height: 340px; overflow-y: auto; }
.dishlist li {
  display: flex; justify-content: space-between; gap: 10px;
  padding: 6px 0; border-top: 1px dashed var(--line);
  font-size: 13.5px;
}
.dishlist li:first-child { border-top: 0; }
.dish-name { min-width: 0; }
.dish-name .en { display: block; font-size: 11.5px; color: var(--ink-3); }
.dish-price { flex: 0 0 auto; font-variant-numeric: tabular-nums; font-weight: 600; color: var(--dut-blue); }
.dish-cat { display: block; font-size: 11px; color: var(--ink-3); }

.dish-flagged .dish-name { color: #8a5a00; }
.flag {
  font-size: 10.5px; color: var(--warn); border: 1px solid #f0d7a8;
  background: var(--warn-bg); border-radius: 4px; padding: 0 5px; margin-left: 5px;
  white-space: nowrap;
}

.why {
  margin: 9px 0 0; padding: 8px 10px;
  background: var(--dut-blue-soft); border-radius: 8px;
  font-size: 12.5px; color: #1c3f6e;
}
.why b { color: var(--dut-blue); }

.empty {
  background: var(--card); border: 1px dashed var(--line); border-radius: var(--radius);
  padding: 26px 16px; text-align: center; color: var(--ink-2); font-size: 14px;
}

.hint { font-size: 12.5px; color: var(--ink-3); margin-top: 6px; }

/* --------------------------------------------------------------- plan table */
.plan-scroll { overflow-x: auto; }
table.plan {
  width: 100%; border-collapse: collapse; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  font-size: 13px;
}
table.plan th, table.plan td {
  border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top;
}
table.plan th { background: #f7f9fc; font-size: 12.5px; color: var(--ink-2); white-space: nowrap; }
table.plan td.day { font-weight: 700; white-space: nowrap; background: #f7f9fc; }
.slot { margin-bottom: 6px; }
.slot:last-child { margin-bottom: 0; }
.slot-label { font-size: 11px; color: var(--ink-3); font-weight: 700; letter-spacing: .5px; }
.slot-item { display: flex; justify-content: space-between; gap: 8px; }
.slot-item .p { color: var(--dut-blue); font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; }
.slot-total { margin-top: 5px; padding-top: 5px; border-top: 1px dashed var(--line); font-size: 12px; color: var(--ink-2); }
.slot-total b { color: var(--ok); font-variant-numeric: tabular-nums; }
.slot-from { font-size: 11px; color: var(--ink-3); }

.plan-summary {
  display: flex; flex-wrap: wrap; gap: 10px 22px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px 14px; font-size: 13px;
}
.plan-summary b { font-variant-numeric: tabular-nums; color: var(--dut-blue); }

/* ------------------------------------------------------------------- notes */
.notepanel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.notepanel dl { margin: 0; font-size: 13px; }
.notepanel dt { font-weight: 700; color: var(--ink-2); margin-top: 10px; }
.notepanel dt:first-child { margin-top: 0; }
.notepanel dd { margin: 2px 0 0; color: var(--ink-2); }

.foot { margin: 26px 0 8px; font-size: 12px; color: var(--ink-3); }
.foot p { margin: 2px 0; }

/* ------------------------------------------------------------- responsive */
@media (max-width: 640px) {
  body { font-size: 14.5px; }
  .wrap { padding: 12px; }
  .topbar-inner { padding: 14px 12px 10px; }
  .statbar { padding: 0 12px 10px; gap: 4px 14px; }
  .tabs { padding: 0 12px; }
  .brand-text h1 { font-size: 17px; }
  .brand-text p { font-size: 11.5px; }
  .brand-mark { width: 38px; height: 38px; flex-basis: 38px; font-size: 13px; }
  .field { min-width: 100%; flex-basis: 100%; }
  .grid { grid-template-columns: 1fr; }
  .panel { padding: 13px; }
  table.plan { font-size: 12.5px; }
}