:root{
  --bg:#f6f8fb;
  --card:#ffffff;
  --muted:#6b7280;
  --text:#0f172a;
  --accent:#2dd4bf;
  --accent2:#60a5fa;
  --danger:#f59e0b;
  --line:#e5e7eb;
}

*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans TC", sans-serif;
}

/* =========================
   Header
========================= */
.app-header{
  position:sticky; top:0; z-index:10;
  padding:14px 16px;
  background:linear-gradient(180deg,#ffffff,#f6f8fb);
  border-bottom:1px solid var(--line);
}
.title{font-size:20px; font-weight:800; letter-spacing:.2px;}
.subtitle{font-size:12px; color:var(--muted); margin-top:2px;}

.app{padding:14px 14px 28px;}
.page{display:flex; flex-direction:column; gap:12px;}

.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  padding:12px;
  box-shadow:0 8px 22px rgba(15,23,42,.08);
}

.section-title{
  font-size:15px; font-weight:900; margin-bottom:8px;
}

/* =========================
   ✅ 頁面 Topbar
========================= */
.page-topbar{
  display:flex;
  align-items:center;
  gap:10px;
}
.back-home-btn{
  border:none;
  background:#eef2ff;
  color:var(--text);
  padding:7px 10px;
  border-radius:10px;
  font-weight:900;
  cursor:pointer;
  border:1px solid var(--line);
}
.page-title{
  font-size:16px;
  font-weight:900;
}

/* =========================
   ✅ Home 首頁（時尚白底）
========================= */
.home-page{gap:14px;}

.hero-card{
  padding:0;
  overflow:hidden;
  position:relative;
  border-radius:18px;
  border:1px solid var(--line);
  box-shadow:0 10px 26px rgba(15,23,42,.10);
}
.hero-img{
  width:100%;
  height:190px;
  object-fit:cover;
  display:block;
}
.hero-overlay{
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(0,0,0,.35), rgba(0,0,0,.05) 55%, rgba(0,0,0,0));
  padding:14px;
  color:#fff;
}
.hero-title{
  font-size:18px;
  font-weight:900;
}
.hero-subtitle{
  font-size:13px;
  opacity:.9;
  margin-top:3px;
}

.home-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
}
.home-btn{
  background:#ffffff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:14px 8px;
  color:var(--text);
  cursor:pointer;
  display:grid;
  gap:6px;
  justify-items:center;
  box-shadow:0 6px 16px rgba(15,23,42,.06);
  transition:.12s transform ease, .12s box-shadow ease;
}
.home-btn:active{ transform:scale(.97); }
.home-btn-icon{ font-size:22px; }
.home-btn-text{ font-size:13px; font-weight:900; }

/* =========================
   Modal（白底）
========================= */
.modal-overlay{
  position:fixed; inset:0;
  background:rgba(15,23,42,.45);
  display:flex; align-items:center; justify-content:center;
  z-index:9999;
}
.modal{
  width:min(92vw, 760px);
  max-height:88vh;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  display:flex; flex-direction:column;
  overflow:hidden;
}
.modal-head{
  display:flex; justify-content:space-between; align-items:center;
  padding:10px 12px;
  background:#f8fafc;
  border-bottom:1px solid var(--line);
}
.modal-title{ font-weight:900; font-size:14px; }
.modal-close{
  border:none; background:transparent; color:var(--text);
  font-size:18px; cursor:pointer; font-weight:900;
}
.modal-body{
  padding:10px;
  overflow:auto;
}
.modal-img{
  width:100%;
  border-radius:10px;
}
.modal-iframe{
  width:100%;
  height:70vh;
  border:none;
  border-radius:10px;
}
/* ✅ PDF embed 需要的高度 */
.modal-embed{
  width:100%;
  height:70vh;
  border:none;
  border-radius:10px;
}
.modal-download{
  display:inline-block;
  margin-top:10px;
  padding:10px 12px;
  border-radius:10px;
  background:var(--accent2);
  color:white;
  font-weight:900;
  text-decoration:none;
}

/* =========================
   行程 / 探索 / 航班 / 飯店
========================= */
.day-title{display:flex; flex-direction:column; gap:2px; margin-bottom:8px;}
/* ✅ 日期放大＆更明顯 */
.day-date{
  font-size:15px;
  font-weight:900;
  color:var(--text);
  letter-spacing:.3px;
}
.day-name{
  font-size:17px;
  font-weight:900;
}

.timeline{display:flex; flex-direction:column; gap:8px;}
.tl-row{
  display:grid; grid-template-columns:72px 1fr; gap:8px; align-items:start;
  padding:8px; border-radius:12px; background:#f8fafc;
  border:1px solid var(--line);
}
.tl-time{color:var(--muted); font-size:12px; padding-top:2px;}
.tl-text{font-size:14px; line-height:1.4;}
.tl-place{font-size:12px; color:var(--accent); margin-top:2px; font-weight:800;}
.tl-note{font-size:12px; color:var(--danger); margin-top:4px; font-weight:800;}
.tl-map{display:inline-block; margin-top:6px; color:var(--accent2); text-decoration:none; font-size:12px;}

.spot-title{font-size:15px; font-weight:900;}
.spot-desc{color:var(--muted); font-size:13px; margin:6px 0 8px; line-height:1.5;}
.spot-subtitle{
  font-size:13px;
  color:var(--accent);
  margin-top:4px;
  margin-bottom:6px;
  font-weight:900;
}
.spot-map{color:var(--accent2); text-decoration:none; font-size:12px;}
.spot-card img{
  width:100%; border-radius:12px; margin-top:8px; border:1px solid var(--line);
}
.chip{
  display:inline-block; font-size:11px; padding:3px 8px; border-radius:999px;
  background:#f1f5f9; border:1px solid var(--line); color:var(--muted);
  margin-bottom:6px;
}

.flight-row, .hotel-row{
  padding:10px; border-radius:12px; background:#f8fafc;
  border:1px solid var(--line); margin-top:8px;
}

.flight-top{display:flex; justify-content:space-between; align-items:center;}
.flight-no{font-size:15px; font-weight:900;}
.flight-airline{font-size:12px; color:var(--muted);}
.flight-mid{display:flex; justify-content:space-between; margin-top:6px; font-size:14px;}
.flight-bot{display:flex; flex-wrap:wrap; gap:8px; margin-top:6px; font-size:12px; color:var(--muted);}
.pnr{margin-top:6px; font-size:12px; color:var(--accent); font-weight:800;}

.hotel-name{font-size:15px; font-weight:900;}
.hotel-addr{font-size:12px; color:var(--muted); margin-top:4px;}
.hotel-meta{font-size:12px; color:var(--muted); margin-top:6px; display:grid; gap:2px;}
.hotel-note{font-size:12px; color:var(--danger); margin-top:6px; font-weight:800;}

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

/* =========================
   Files 檔案頁（白底）
========================= */
.files-box{display:grid; gap:8px;}
.files-input{
  width:100%;
  padding:10px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
}
.files-name-input{
  width:100%;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
  font-size:14px;
  outline:none;
}
.files-save-btn{
  border:none; border-radius:12px;
  padding:10px; font-size:14px;
  font-weight:900; color:white;
  background:var(--accent);
  cursor:pointer;
}
.files-hint{line-height:1.5;}

.file-list{display:grid; gap:8px; margin-top:8px;}
.file-item-row{
  display:grid;
  grid-template-columns:1fr auto auto;
  gap:6px;
  align-items:center;
  padding:8px 10px;
  border-radius:12px;
  background:#f8fafc;
  border:1px solid var(--line);
}
.file-item-title{font-weight:900; font-size:14px;}
.file-item-meta{font-size:12px;}
.file-open-btn{
  border:none; border-radius:10px;
  padding:6px 8px; font-weight:900;
  background:var(--accent2); color:white; cursor:pointer;
}
.file-del-btn{
  border:none; border-radius:10px;
  padding:6px 8px; font-weight:900;
  background:#ef4444; color:white; cursor:pointer;
}

/* =========================
   Weather 7日天氣（白底）
========================= */
.weather-box{display:grid; gap:8px;}
.weather-row{
  display:grid; grid-template-columns:1fr auto; gap:8px;
}
.weather-select{
  width:100%;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
  font-size:14px;
}
.weather-btn{
  border:none; border-radius:12px;
  padding:10px 12px; font-size:14px;
  font-weight:900; color:white;
  background:var(--accent2);
  cursor:pointer;
}
.weather-list{display:grid; gap:8px; margin-top:6px;}
.weather-item{
  padding:10px;
  border-radius:12px;
  background:#f8fafc;
  border:1px solid var(--line);
  display:grid; gap:4px;
}
.weather-date{font-weight:900;}
.weather-desc{font-size:14px;}
.weather-temp{font-size:14px;}
.weather-rain{font-size:12px;}

/* =========================
   Map Search（白底）
========================= */
.map-box{display:grid; gap:8px;}
.map-input{
  width:100%;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
  font-size:14px;
  outline:none;
}
.map-btn{
  border:none;
  border-radius:12px;
  padding:10px;
  font-size:14px;
  font-weight:900;
  color:white;
  background:var(--accent2);
  cursor:pointer;
}