:root {
    --bg: #fafafa;
    --fg: #1f2937;
    --muted: #6b7280;
    --brand: #2563eb;
    --ok: #10b981;
    --shadow: 0 10px 30px rgba(0,0,0,.08);
}

* { box-sizing: border-box; }

html, body { height: 100%; overflow-x: hidden; } /* ← 新增，禁用横向滚动 */

body {
    margin: 0;
    color: var(--fg);
    background: var(--bg);
    font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: white;
    box-shadow: var(--shadow);
    padding: 16px 20px;
}

.site-title { margin: 0; font-size: 20px; font-weight: 700;font-family: "楷体"; }
.site-sub   { margin: 4px 0 0; color: var(--muted); font-size: 13px; }

.container {
    padding: 18px;
    width: 100%;
    max-width: 1400px; 
    margin: 0 auto;
}

.route-bar {
    margin: 8px 0 14px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    font-size: 14px;
}

.route-bar label {
    font-weight: 600;
}

.route-bar select {
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid #d1d5db;
    font-size: 14px;
    background: #ffffff;
}

.route-status {
    font-size: 12px;
    color: var(--muted);
}


.map-wrap {
    position: relative;
    width: 100%;
    margin: 0 auto;
    overflow: hidden; /* ← 新增，避免图片/徽章层偶发溢出 */
}

#campus-map {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.pins {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.pin {
    position: absolute;
    transform: translate(-50%, -100%);
    pointer-events: none;
}
.pin .dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    box-shadow: var(--shadow);
    display: grid;
    place-items: center;
}
.pin .dot::after {
    content: "✓";
    font-size: 12px;
    color: white;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--ok);
    display: grid;
    place-items: center;
}

dialog {
    border: none;
    border-radius: 14px;
    padding: 0;
    box-shadow: var(--shadow);
    width: min(720px, 92vw);
}
dialog::backdrop { background: rgba(0,0,0,.25); }

.modal {
    display: grid;
    grid-template-columns: 1.1fr 1.2fr;
    gap: 0;
    overflow: hidden;
}
.modal .left {
    background: #0b1220;
    color: white;
    display: grid;
    place-items: center;
    min-height: 260px;
}
.modal .left img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.modal .right { padding: 18px 18px 14px; background: white; }
.modal h2 { margin: 0 0 10px; font-size: 20px; }

.short { font-size: 14px; color: var(--muted); margin-bottom: 8px; }
.full  { font-size: 15px; color: var(--fg); line-height: 1.4; max-height: 38vh; overflow: auto; padding-right: 6px;font-family: "楷体"; }

.actions { display: flex; gap: 10px; margin-top: 12px; }
.btn { appearance: none; border: 0; padding: 10px 14px; border-radius: 999px; font-weight: 600; cursor: pointer; box-shadow: var(--shadow); }
.btn.primary { background: var(--brand); color: white; }
.btn.ghost   { background: #eef2ff; color: #374151; }

.devbar {
    display: flex; gap: 12px; align-items: center;
    margin: 10px 0 0; font-size: 12px; color: var(--muted); flex-wrap: wrap;
}
.chip { background: white; border-radius: 999px; padding: 6px 10px; box-shadow: var(--shadow); }

@media (max-width: 720px) {
    .modal { grid-template-columns: 1fr; }
    .modal .left { height: 32vh; }
}

/* 移动端触摸优化 */
/* 移动端触摸优化 - 允许缩放 */
#campus-map {
  -webkit-tap-highlight-color: transparent; /* 改善点击反馈 */
  touch-action: auto;
}

/* 移动端弹窗优化 */
@media (max-width: 720px) {
  .modal { 
    grid-template-columns: 1fr; 
  }
  .modal .left { 
    height: 35vh;
  }
  .modal .right {
    padding: 16px;
  }
  .modal h2 {
    font-size: 18px;
    margin: 0 0 8px;
  }
  .short {
    font-size: 13px;
  }
  .full {
    font-size: 14px;
    line-height: 1.5;
  }
}
/* === Desktop viewport height fix === */
@media (min-width: 900px) {
  html, body { height: 100%; }
  #map-viewport { height: 100vh; }
}