/* ===== 环球旅行工具箱 TravelBox ===== */
:root{
  --bg0:#070f2b;
  --bg1:#0b1f4b;
  --bg2:#123a6d;
  --card:rgba(255,255,255,.07);
  --card-border:rgba(255,255,255,.14);
  --text:#eaf2ff;
  --muted:#9fb3d9;
  --accent:#f6a63c;
  --accent2:#4ecdc4;
  --danger:#ff6b6b;
  --ok:#3ddc97;
  --radius:20px;
  --shadow:0 12px 40px rgba(0,0,0,.35);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:linear-gradient(160deg,var(--bg0) 0%,var(--bg1) 45%,var(--bg2) 100%) fixed;
  min-height:100vh;
  overflow-x:hidden;
}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* 星空 */
.stars{position:fixed;inset:0;z-index:0;pointer-events:none}
.star{position:absolute;border-radius:50%;background:#fff;opacity:.7;animation:twinkle 3s ease-in-out infinite}
@keyframes twinkle{0%,100%{opacity:.2}50%{opacity:.9}}
.globe-glow{position:fixed;top:-200px;right:-200px;width:600px;height:600px;border-radius:50%;
  background:radial-gradient(circle,rgba(78,205,196,.18) 0%,transparent 70%);z-index:0;pointer-events:none}

/* Header */
.site-header{position:relative;z-index:10;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:700;font-size:20px}
.logo-icon{font-size:26px;filter:drop-shadow(0 0 10px rgba(246,166,60,.5))}
.logo-accent{color:var(--accent)}
.nav{display:flex;gap:24px}
.nav a{color:var(--muted);text-decoration:none;font-size:14px;transition:color .2s}
.nav a:hover{color:var(--accent)}

/* Hero */
.hero{position:relative;z-index:1;text-align:center;padding:90px 0 120px}
.hero-title{font-size:clamp(34px,6vw,58px);font-weight:800;line-height:1.25;letter-spacing:1px}
.grad{background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:18px;color:var(--muted);font-size:clamp(15px,2.4vw,19px);line-height:1.7}
.hero-badge{margin-top:26px;display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.hero-badge span{background:var(--card);border:1px solid var(--card-border);padding:7px 16px;border-radius:999px;font-size:13px;color:var(--text)}
.routes{position:absolute;left:0;right:0;bottom:0;width:100%;height:100%;z-index:-1;opacity:.55}
.plane{filter:drop-shadow(0 0 6px rgba(246,166,60,.8))}

/* 标题 */
.section-title{position:relative;z-index:1;font-size:clamp(24px,4vw,34px);font-weight:800;text-align:center;margin-top:20px}
.section-sub{position:relative;z-index:1;text-align:center;color:var(--muted);margin:10px 0 34px;font-size:14px}

/* 工具网格 */
.tool-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px;padding-bottom:40px}
.tool-card{
  background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);
  padding:24px 20px;cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s;
  position:relative;overflow:hidden;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.tool-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);background:rgba(255,255,255,.12)}
.tool-card .icon{font-size:36px;margin-bottom:12px;display:block}
.tool-card h3{font-size:17px;margin-bottom:8px}
.tool-card p{font-size:13px;color:var(--muted);line-height:1.6}
.tool-card .go{position:absolute;top:18px;right:18px;color:var(--muted);font-size:13px;opacity:0;transition:opacity .2s}
.tool-card:hover .go{opacity:1;color:var(--accent)}

/* 模态框 */
.modal-mask{position:fixed;inset:0;background:rgba(4,10,30,.78);backdrop-filter:blur(6px);z-index:100;
  display:none;align-items:center;justify-content:center;padding:20px}
.modal-mask.open{display:flex}
.modal{background:linear-gradient(170deg,#0d2452,#0a1838);border:1px solid var(--card-border);border-radius:22px;
  width:100%;max-width:640px;max-height:88vh;overflow-y:auto;position:relative;box-shadow:var(--shadow);animation:pop .25s ease}
@keyframes pop{from{transform:scale(.94);opacity:0}to{transform:scale(1);opacity:1}}
.modal-close{position:sticky;top:12px;float:right;margin:12px 12px 0 0;width:34px;height:34px;border-radius:50%;
  border:1px solid var(--card-border);background:var(--card);color:var(--text);font-size:15px;cursor:pointer;z-index:5;transition:background .2s}
.modal-close:hover{background:var(--danger);border-color:var(--danger)}
.modal-body{padding:28px 26px 30px}
.modal-body h3{font-size:22px;margin-bottom:16px;display:flex;align-items:center;gap:10px}

/* 表单 */
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.input,select.input,textarea.input{
  width:100%;padding:11px 14px;border-radius:12px;border:1px solid var(--card-border);
  background:rgba(255,255,255,.07);color:var(--text);font-size:15px;outline:none;transition:border .2s;
}
.input:focus{border-color:var(--accent)}
select.input option{background:#0d2452;color:var(--text)}
.btn{display:inline-block;padding:11px 22px;border-radius:12px;border:none;cursor:pointer;font-size:14px;font-weight:600;
  background:linear-gradient(90deg,var(--accent),#e58e2a);color:#1c1202;transition:filter .2s,transform .15s}
.btn:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.secondary{background:var(--card);border:1px solid var(--card-border);color:var(--text)}
.btn.small{padding:7px 14px;font-size:13px}
.chip{display:inline-block;padding:7px 14px;border-radius:999px;border:1px solid var(--card-border);background:var(--card);color:var(--accent);cursor:pointer;font-size:13px;font-weight:600;transition:all .2s}
.chip:hover{border-color:var(--accent);transform:translateY(-1px)}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}

.result-box{margin-top:16px;background:rgba(255,255,255,.06);border:1px solid var(--card-border);border-radius:14px;padding:16px}
.result-box .big{font-size:26px;font-weight:800;color:var(--accent)}
.result-box .sub{font-size:13px;color:var(--muted);margin-top:4px}
.tip{font-size:12px;color:var(--muted);margin-top:10px;line-height:1.6}

/* 表格 */
.tbl{width:100%;border-collapse:collapse;font-size:13px;margin-top:10px}
.tbl th,.tbl td{padding:9px 10px;text-align:left;border-bottom:1px solid rgba(255,255,255,.08)}
.tbl th{color:var(--accent);font-weight:600;background:rgba(255,255,255,.04)}
.tbl tr:hover td{background:rgba(255,255,255,.04)}

/* 时钟 */
.clock-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin-top:14px}
.clock-card{background:var(--card);border:1px solid var(--card-border);border-radius:14px;padding:14px;text-align:center}
.clock-card .c-city{font-size:14px;color:var(--muted)}
.clock-card .c-time{font-size:20px;font-weight:700;margin-top:6px;font-variant-numeric:tabular-nums}
.clock-card .c-date{font-size:12px;color:var(--muted);margin-top:3px}

/* 清单 */
.pack-progress{height:10px;border-radius:999px;background:rgba(255,255,255,.1);overflow:hidden;margin:12px 0}
.pack-progress .bar{height:100%;background:linear-gradient(90deg,var(--accent2),var(--accent));width:0;transition:width .3s;border-radius:999px}
.pack-cat{font-weight:700;margin:16px 0 8px;color:var(--accent2);font-size:14px}
.pack-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:10px;cursor:pointer;transition:background .2s}
.pack-item:hover{background:rgba(255,255,255,.05)}
.pack-item input{width:17px;height:17px;accent-color:var(--accent);cursor:pointer}
.pack-item span{font-size:14px}
.pack-item.done span{text-decoration:line-through;color:var(--muted)}

/* 短语 */
.phrase-search{margin-bottom:12px}
.phrase-list{max-height:46vh;overflow-y:auto;padding-right:6px}
.phrase-list::-webkit-scrollbar{width:6px}
.phrase-list::-webkit-scrollbar-thumb{background:rgba(255,255,255,.2);border-radius:99px}
.phrase-row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.07)}
.phrase-row .cn{font-size:14px}
.phrase-row .en{font-size:13px;color:var(--accent2)}
.phrase-row .copy{background:none;border:1px solid var(--card-border);color:var(--muted);border-radius:8px;padding:4px 10px;font-size:12px;cursor:pointer;transition:color .2s,border .2s;flex-shrink:0}
.phrase-row .copy:hover{color:var(--accent);border-color:var(--accent)}

/* 倒计时 */
.countdown-big{text-align:center;padding:10px 0}
.countdown-num{font-size:44px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums}
.countdown-days{font-size:16px;color:var(--muted);margin-top:4px}
.countdown-parts{display:flex;justify-content:center;gap:18px;margin-top:18px}
.countdown-parts .part{text-align:center}
.countdown-parts .num{font-size:26px;font-weight:700;font-variant-numeric:tabular-nums}
.countdown-parts .lbl{font-size:12px;color:var(--muted)}

/* 关于/页脚 */
.about-text{position:relative;z-index:1;text-align:center;color:var(--muted);font-size:14px;line-height:1.9;max-width:760px;margin:0 auto 40px}
.site-footer{position:relative;z-index:1;border-top:1px solid rgba(255,255,255,.08);padding:22px 0;text-align:center;color:var(--muted);font-size:13px}

/* 小工具 */
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.hint{font-size:12px;color:var(--muted)}
.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%) translateY(20px);background:var(--ok);color:#06281a;
  padding:10px 20px;border-radius:99px;font-size:13px;font-weight:600;opacity:0;transition:all .3s;z-index:200;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

@media (max-width:640px){
  .row2{grid-template-columns:1fr}
  .tool-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}
  .hero{padding:60px 0 90px}
  .modal-body{padding:22px 18px 26px}
}