/* ============ 设计令牌 ============ */
:root {
  --bg: #0b1220;
  --bg-soft: #111c2e;
  --panel: #15233a;
  --panel-2: #1b2c47;
  --line: #26395a;
  --text: #e8eef7;
  --text-dim: #9fb2cd;
  --text-faint: #6b7e9b;
  --accent: #5b8cff;
  --accent-soft: #1f3a6b;

  /* 签证类别色 */
  --c-free: #21c97a;
  --c-voa: #14b8b8;
  --c-eta: #4f8cff;
  --c-evisa: #f0a830;
  --c-required: #5b6b87;
  --c-noadm: #e1556b;
  --c-home: #c9a227;
  --c-empty: #1d2c44;

  --ok: #21c97a;
  --warn: #f0a830;
  --bad: #5b6b87;

  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 80% -10%, #16263f 0%, transparent 60%),
    radial-gradient(900px 500px at 0% 110%, #14223a 0%, transparent 55%),
    var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
#app { display: flex; flex-direction: column; height: 100vh; }

/* ============ 顶栏 ============ */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; gap: 16px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(21, 35, 58, 0.9), rgba(11, 18, 32, 0.6));
  backdrop-filter: blur(8px);
  flex-shrink: 0;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-emoji { font-size: 30px; filter: drop-shadow(0 4px 10px rgba(0,0,0,.4)); }
.brand-text h1 { margin: 0; font-size: 19px; letter-spacing: .5px; }
.tagline { margin: 2px 0 0; font-size: 12px; color: var(--text-dim); }
.topbar-meta { display: flex; align-items: center; gap: 12px; }
.data-stamp { font-size: 11.5px; color: var(--text-faint); }
.ghost-btn {
  background: transparent; color: var(--text-dim); border: 1px solid var(--line);
  border-radius: 999px; padding: 6px 12px; font-size: 12.5px; cursor: pointer;
  transition: .15s;
}
.ghost-btn:hover { color: var(--text); border-color: var(--accent); }

/* ============ 控制区 ============ */
.controls {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 12px 20px; border-bottom: 1px solid var(--line);
  background: rgba(17, 28, 46, 0.6);
  flex-shrink: 0;
}
.control-group { display: flex; gap: 6px; }
.view-switch {
  background: var(--bg-soft); padding: 4px; border-radius: 999px; border: 1px solid var(--line);
}
.seg {
  border: 0; background: transparent; color: var(--text-dim);
  padding: 8px 16px; border-radius: 999px; font-size: 13.5px; cursor: pointer;
  font-weight: 600; transition: .18s; white-space: nowrap;
}
.seg:hover { color: var(--text); }
.seg.active { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(91,140,255,.4); }

.us-toggle { display: flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.us-toggle input { display: none; }
.switch {
  width: 40px; height: 22px; border-radius: 999px; background: var(--line);
  position: relative; transition: .2s; flex-shrink: 0;
}
.switch::after {
  content: ""; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px;
  border-radius: 50%; background: #fff; transition: .2s;
}
.us-toggle input:checked + .switch { background: var(--c-eta); }
.us-toggle input:checked + .switch::after { transform: translateX(18px); }
.us-label { font-size: 13px; color: var(--text-dim); }
.us-toggle input:checked ~ .us-label { color: var(--text); }

.filter-chips { flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 999px; font-size: 12.5px; cursor: pointer;
  border: 1px solid var(--line); background: var(--bg-soft); color: var(--text-dim);
  transition: .15s; font-weight: 600;
}
.chip .dot { width: 9px; height: 9px; border-radius: 50%; }
.chip.off { opacity: .38; }
.chip:hover { border-color: var(--text-faint); }

.search-wrap { margin-left: auto; }
#search {
  background: var(--bg-soft); border: 1px solid var(--line); color: var(--text);
  padding: 9px 14px; border-radius: 999px; font-size: 13px; width: 190px; outline: none;
  transition: .15s;
}
#search:focus { border-color: var(--accent); width: 220px; }
#search::placeholder { color: var(--text-faint); }

/* ============ 主体布局 ============ */
.layout { display: flex; flex: 1; min-height: 0; }
.map-pane { flex: 1; display: flex; flex-direction: column; min-width: 0; position: relative; }
#map-wrap { flex: 1; position: relative; overflow: hidden; }
#map { width: 100%; height: 100%; display: block; cursor: grab; }
#map:active { cursor: grabbing; }
.country { stroke: #0b1220; stroke-width: .4px; transition: fill .25s, opacity .15s; cursor: pointer; }
.country.dim { opacity: .22; }
.country.hl { stroke: #fff; stroke-width: 1.4px; }
.graticule { fill: none; stroke: #223556; stroke-width: .4px; opacity: .5; }
.sphere { fill: #0d1729; stroke: var(--line); stroke-width: 1px; }

.map-tools {
  position: absolute; right: 14px; bottom: 14px; display: flex; flex-direction: column; gap: 6px;
}
.map-tools button {
  width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--line);
  background: rgba(17,28,46,.9); color: var(--text); font-size: 18px; cursor: pointer;
  display: grid; place-items: center; transition: .15s;
}
.map-tools button:hover { border-color: var(--accent); color: #fff; }

.tooltip {
  position: absolute; pointer-events: none; z-index: 40;
  background: rgba(8, 14, 26, 0.96); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 12px; font-size: 12.5px; max-width: 240px;
  box-shadow: var(--shadow); transform: translate(-50%, calc(-100% - 14px));
}
.tooltip .tt-name { font-weight: 700; font-size: 13.5px; margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.tooltip .tt-row { display: flex; align-items: center; gap: 7px; margin-top: 4px; color: var(--text-dim); }
.tooltip .tt-badge { font-size: 11px; padding: 1px 7px; border-radius: 999px; font-weight: 700; color: #06121f; }

/* ============ 图例 ============ */
.legend {
  display: flex; gap: 16px; flex-wrap: wrap; align-items: center;
  padding: 10px 18px; border-top: 1px solid var(--line); background: rgba(11,18,32,.55);
  font-size: 12px; color: var(--text-dim);
}
.legend-item { display: flex; align-items: center; gap: 7px; }
.legend-swatch { width: 13px; height: 13px; border-radius: 4px; }

/* ============ 侧栏 ============ */
.side-pane {
  width: 360px; flex-shrink: 0; border-left: 1px solid var(--line);
  display: flex; flex-direction: column; background: rgba(13,21,36,.55); min-height: 0;
}
.stat-banner { padding: 16px 18px 12px; border-bottom: 1px solid var(--line); }
.stat-headline { font-size: 14px; color: var(--text-dim); margin-bottom: 10px; line-height: 1.5; }
.stat-headline b { color: var(--text); }
.stat-big { font-size: 38px; font-weight: 800; color: var(--ok); letter-spacing: -1px; line-height: 1; }
.stat-big small { font-size: 14px; color: var(--text-dim); font-weight: 600; margin-left: 6px; }
.stat-pills { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.stat-pill {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: 7px 10px; font-size: 12px; color: var(--text-dim);
}
.stat-pill b { color: var(--text); font-size: 15px; margin-right: 3px; }

.list-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 18px; border-bottom: 1px solid var(--line);
}
.list-count { font-size: 12.5px; color: var(--text-faint); }
.sort-select {
  background: var(--bg-soft); border: 1px solid var(--line); color: var(--text-dim);
  border-radius: 8px; padding: 5px 8px; font-size: 12px; outline: none; cursor: pointer;
}
.country-list { list-style: none; margin: 0; padding: 6px; overflow-y: auto; flex: 1; }
.country-row {
  display: flex; align-items: center; gap: 11px; padding: 9px 12px; border-radius: var(--radius-sm);
  cursor: pointer; transition: .12s;
}
.country-row:hover { background: var(--panel); }
.country-row .flag { font-size: 22px; line-height: 1; flex-shrink: 0; }
.country-row .cr-main { flex: 1; min-width: 0; }
.country-row .cr-name { font-size: 14px; font-weight: 600; }
.country-row .cr-sub { font-size: 11.5px; color: var(--text-faint); margin-top: 1px; }
.cr-badges { display: flex; gap: 5px; flex-shrink: 0; }
.mini-badge {
  font-size: 10px; font-weight: 800; padding: 2px 6px; border-radius: 6px; color: #06121f;
  display: inline-flex; align-items: center; gap: 3px;
}
.mini-badge.req { color: var(--text-dim); background: var(--c-required) !important; }
.us-flag-tag { font-size: 10px; color: var(--c-eta); border: 1px solid var(--c-eta); border-radius: 5px; padding: 1px 4px; }

/* ============ 抽屉 / 弹窗 ============ */
.drawer, .modal { position: fixed; inset: 0; z-index: 100; display: flex; }
.drawer[hidden], .modal[hidden] { display: none; }
.drawer-backdrop, .modal-backdrop {
  position: absolute; inset: 0; background: rgba(4, 8, 16, 0.6); backdrop-filter: blur(2px);
  animation: fade .2s ease;
}
.drawer-card {
  position: relative; margin-left: auto; width: min(440px, 92vw); height: 100%;
  background: var(--bg-soft); border-left: 1px solid var(--line); box-shadow: var(--shadow);
  padding: 26px 26px 40px; overflow-y: auto; z-index: 1; animation: slideIn .26s cubic-bezier(.2,.8,.2,1);
}
.modal-card {
  position: relative; margin: auto; width: min(560px, 92vw); max-height: 86vh; overflow-y: auto;
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 28px; z-index: 1; animation: pop .2s ease;
}
.drawer-close {
  position: absolute; top: 16px; right: 16px; width: 32px; height: 32px; border-radius: 50%;
  border: 1px solid var(--line); background: var(--panel); color: var(--text-dim);
  cursor: pointer; font-size: 14px; z-index: 2;
}
.drawer-close:hover { color: #fff; border-color: var(--accent); }
@keyframes slideIn { from { transform: translateX(40px); opacity: 0; } }
@keyframes fade { from { opacity: 0; } }
@keyframes pop { from { transform: scale(.96); opacity: 0; } }

/* 抽屉内容 */
.d-head { display: flex; align-items: center; gap: 14px; margin-bottom: 6px; }
.d-flag { font-size: 46px; line-height: 1; }
.d-title h2 { margin: 0; font-size: 22px; }
.d-title .d-sub { color: var(--text-dim); font-size: 13px; margin-top: 3px; }
.d-verdict {
  margin: 18px 0; padding: 14px 16px; border-radius: var(--radius-sm); font-size: 14px;
  display: flex; align-items: center; gap: 10px; line-height: 1.5;
}
.d-verdict.ok { background: rgba(33,201,122,.12); border: 1px solid rgba(33,201,122,.35); color: #b5f3d4; }
.d-verdict.warn { background: rgba(240,168,48,.1); border: 1px solid rgba(240,168,48,.32); color: #f6dca6; }
.d-verdict.bad { background: rgba(91,107,135,.12); border: 1px solid var(--line); color: var(--text-dim); }
.d-verdict .v-emoji { font-size: 22px; }

.d-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 6px; }
.pp-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px; }
.pp-card .pp-head { display: flex; align-items: center; gap: 7px; font-size: 13px; color: var(--text-dim); margin-bottom: 10px; }
.pp-badge {
  display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 800;
  padding: 6px 12px; border-radius: 8px; color: #06121f;
}
.pp-badge.req { background: var(--c-required); color: var(--text); }
.pp-days { font-size: 12.5px; color: var(--text-dim); margin-top: 9px; }
.pp-days b { color: var(--text); }
.pp-us {
  margin-top: 11px; padding-top: 11px; border-top: 1px dashed var(--line);
  font-size: 12px; color: var(--text-dim); line-height: 1.5;
}
.pp-us .us-head { color: var(--c-eta); font-weight: 700; display: flex; align-items: center; gap: 5px; margin-bottom: 4px; }
.pp-us a { color: var(--accent); }
.d-note { margin-top: 18px; font-size: 11.5px; color: var(--text-faint); line-height: 1.6; }

#about-body { font-size: 13.5px; color: var(--text-dim); line-height: 1.7; }
#about-body h3 { color: var(--text); font-size: 14px; margin: 18px 0 6px; }
#about-body code { background: var(--panel); padding: 1px 5px; border-radius: 4px; font-size: 12px; }
#about-body ul { padding-left: 18px; }
#about-body a { color: var(--accent); }

/* ============ 响应式 ============ */
@media (max-width: 880px) {
  body { overflow: auto; }
  #app { height: auto; min-height: 100vh; }
  .layout { flex-direction: column; }
  .side-pane { width: auto; border-left: 0; border-top: 1px solid var(--line); }
  #map-wrap { height: 56vh; }
  .country-list { max-height: 50vh; }
  .search-wrap { margin-left: 0; width: 100%; }
  #search, #search:focus { width: 100%; }
  .controls { gap: 10px; }
}