/* ═══════════════════════════════════════════════════════════
   流星快传 / Meteor Send — Stylesheet
   ═══════════════════════════════════════════════════════════ */

/* Theme */
[data-theme="light"] {
  --bg: #f5f5f7; --card: #fff; --card-shadow: 0 2px 16px rgba(0,0,0,0.06);
  --text: #1d1d1f; --text-sec: #6e6e73; --text-muted: #aeaeb2;
  --border: #e5e5ea; --border-hover: #c7c7cc;
  --accent: #667eea; --accent-dark: #5a6fd6; --accent2: #764ba2;
  --gradient: linear-gradient(135deg, #667eea, #764ba2);
  --glow: rgba(102,126,234,0.25);
  --input-bg: #fff; --drop-bg: #fafafa; --drop-border: #d1d1d6; --drop-hover: #f0f0f5;
  --expire-bg: #f2f2f7; --expire-border: #d1d1d6;
  --success: #34c759; --danger: #ff3b30;
  --footer-text: #aeaeb2; --footer-link: #6e6e73;
  --stat-bg: #f2f2f7; --pw-bg: #fafafa;
}
[data-theme="dark"] {
  --bg: #0f0f23; --card: #1a1a2e; --card-shadow: 0 4px 24px rgba(0,0,0,0.3);
  --text: #e0e0e0; --text-sec: #98989d; --text-muted: #636366;
  --border: #2c2c3a; --border-hover: #3a3a4a;
  --accent: #667eea; --accent-dark: #5a6fd6; --accent2: #764ba2;
  --gradient: linear-gradient(135deg, #667eea, #764ba2);
  --glow: rgba(102,126,234,0.3);
  --input-bg: #16162a; --drop-bg: #16162a; --drop-border: #2c2c3a; --drop-hover: #1e1e36;
  --expire-bg: #16162a; --expire-border: #2c2c3a;
  --success: #30d158; --danger: #ff453a;
  --footer-text: #636366; --footer-link: #98989d;
  --stat-bg: #16162a; --pw-bg: #16162a;
}

* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg); color: var(--text);
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  transition: background .3s, color .3s;
}
.page-body { min-height:100vh; display:block; align-items:unset; justify-content:unset; }
.container { width:90%; max-width:560px; padding-bottom:20px; }

/* Toggle bar (theme + language) */
.toggle-bar {
  position:fixed; top:52px; right:16px; z-index:100;
  display:flex; background:var(--card); border:1px solid var(--border);
  border-radius:24px; box-shadow:var(--card-shadow); overflow:hidden;
}
.toggle-btn {
  background:none; border:none; cursor:pointer; font-size:15px;
  padding:8px 14px; display:flex; align-items:center; justify-content:center;
  transition:background .2s; color:var(--text);
}
.toggle-btn:hover { background:var(--drop-hover); }
.toggle-btn + .toggle-btn { border-left:1px solid var(--border); }

/* Header */
h1 {
  text-align:center; font-size:28px; margin-bottom:6px;
  background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.subtitle { text-align:center; color:var(--text-sec); font-size:14px; margin-bottom:20px; }

/* Meteor animation */
.meteor-bg {
  position:fixed; top:0; left:0; width:100%; height:100%; pointer-events:none; z-index:0; overflow:hidden;
}
.meteor {
  position:absolute; width:2px; height:80px;
  background: linear-gradient(to bottom, rgba(102,126,234,0.8), transparent);
  border-radius:2px;
  animation: meteorFall 1.2s ease-in forwards;
  opacity:0;
}
@keyframes meteorFall {
  0% { opacity:0; transform:translate(0,0) rotate(-45deg); }
  10% { opacity:1; }
  100% { opacity:0; transform:translate(-300px,600px) rotate(-45deg); }
}

/* Stats bar */
.stats-bar { display:flex; justify-content:center; gap:28px; margin-bottom:24px; }
.stat-item { text-align:center; }
.stat-value {
  font-size:22px; font-weight:700;
  background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.stat-label { font-size:12px; color:var(--text-muted); margin-top:2px; }

/* Drop zone */
.dropzone {
  border:2px dashed var(--drop-border); border-radius:16px; padding:44px 24px;
  text-align:center; cursor:pointer; transition:all .3s; background:var(--drop-bg);
}
.dropzone:hover, .dropzone.dragover {
  border-color:var(--accent); background:var(--drop-hover); box-shadow:0 0 24px var(--glow);
}
.dropzone .icon { font-size:48px; margin-bottom:10px; }
.dropzone .text { font-size:15px; color:var(--text-sec); }
.dropzone .text u { color:var(--accent); }
.dropzone .hint { font-size:13px; color:var(--text-muted); margin-top:6px; }
.dropzone input { display:none; }

/* Multi-file tag */
.multi-tag {
  display:inline-block; background:var(--gradient); color:#fff; font-size:11px;
  padding:2px 8px; border-radius:10px; margin-left:6px; font-weight:600;
}

/* File info */
.file-info {
  display:none; background:var(--card); border:1px solid var(--border); border-radius:12px;
  padding:14px 18px; margin-top:14px; align-items:center; gap:12px;
}
.file-info.show { display:flex; }
.fi-icon { font-size:30px; }
.fi-detail { flex:1; }
.fi-name { font-size:14px; font-weight:600; word-break:break-all; color:var(--text); }
.fi-size { font-size:13px; color:var(--text-sec); margin-top:2px; }
.fi-remove {
  background:none; border:none; color:var(--danger); cursor:pointer;
  font-size:18px; padding:4px 8px; border-radius:6px;
}
.fi-remove:hover { background:rgba(255,59,48,0.1); }

/* Expire */
.expire-section { margin-top:18px; }
.expire-label { font-size:14px; color:var(--text-sec); margin-bottom:10px; }
.expire-options { display:flex; flex-wrap:wrap; gap:8px; }
.expire-btn {
  padding:7px 14px; border:1px solid var(--expire-border); border-radius:8px;
  background:var(--expire-bg); color:var(--text-sec); cursor:pointer; font-size:13px; transition:all .2s;
}
.expire-btn:hover { border-color:var(--accent); color:var(--text); }
.expire-btn.active {
  background:var(--gradient); border-color:transparent; color:#fff; font-weight:600;
}
.custom-expire-wrap { display:none; margin-top:10px; gap:8px; align-items:center; }
.custom-expire-wrap.show { display:flex; }
.custom-expire-input {
  flex:1; padding:10px 14px; border:1px solid var(--border); border-radius:8px;
  background:var(--input-bg); color:var(--text); font-size:14px; outline:none; transition:border .2s;
}
.custom-expire-input:focus { border-color:var(--accent); }
.custom-expire-unit { color:var(--text-sec); font-size:13px; white-space:nowrap; }

/* Options row */
.options-row { display:flex; gap:12px; margin-top:16px; flex-wrap:wrap; }
.option-group { flex:1; min-width:140px; }
.option-label { font-size:13px; color:var(--text-sec); margin-bottom:6px; }
.option-input {
  width:100%; padding:9px 12px; border:1px solid var(--border); border-radius:8px;
  background:var(--input-bg); color:var(--text); font-size:13px; outline:none; transition:border .2s;
}
.option-input:focus { border-color:var(--accent); }

/* Buttons */
.btn {
  display:inline-block; padding:14px 28px; border:none; border-radius:12px;
  font-size:16px; font-weight:600; cursor:pointer; transition:all .2s;
  text-decoration:none; text-align:center;
}
.btn-primary { background:var(--gradient); color:#fff; }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 6px 20px var(--glow); }
.btn-block { display:block; width:100%; }
.btn-danger { background:var(--danger); color:#fff; }
.btn-danger:hover { opacity:0.9; }
.btn-sm { padding:8px 16px; font-size:14px; border-radius:8px; }

.upload-btn {
  display:block; width:100%; margin-top:22px; padding:14px;
  background:var(--gradient); color:#fff; border:none; border-radius:12px;
  font-size:16px; font-weight:600; cursor:pointer; transition:all .2s;
  opacity:0.5; pointer-events:none;
}
.upload-btn.ready { opacity:1; pointer-events:auto; }
.upload-btn.ready:hover { transform:translateY(-2px); box-shadow:0 6px 20px var(--glow); }
.upload-btn.uploading { opacity:0.7; pointer-events:none; }

/* Progress */
.progress-wrap { display:none; margin-top:14px; background:var(--border); border-radius:6px; overflow:hidden; height:6px; }
.progress-wrap.show { display:block; }
.progress-bar { height:100%; background:var(--gradient); width:0%; transition:width .3s; border-radius:6px; }
.progress-text { text-align:center; font-size:12px; color:var(--text-sec); margin-top:6px; }

/* Result */
.result {
  display:none; background:var(--card); border:1px solid var(--border); border-radius:16px;
  padding:32px; margin-top:24px; text-align:center; box-shadow:var(--card-shadow);
}
.result.show { display:block; }
.r-icon { font-size:48px; margin-bottom:10px; }
.r-title { font-size:18px; font-weight:600; margin-bottom:20px; }
.r-link-wrap {
  display:flex; gap:8px; background:var(--input-bg);
  border:1px solid var(--border); border-radius:10px; padding:4px;
}
.r-link {
  flex:1; background:none; border:none; color:var(--accent);
  font-size:15px; padding:12px; text-align:center; outline:none;
}
.r-copy {
  padding:12px 18px; background:var(--accent); color:#fff; border:none;
  border-radius:8px; cursor:pointer; font-size:14px; font-weight:600;
  white-space:nowrap; transition:background .2s;
}
.r-copy:hover { background:var(--accent-dark); }
.r-meta { margin-top:14px; font-size:13px; color:var(--text-sec); }
.r-section { margin-top:20px; }
.r-section-title { font-size:13px; color:var(--text-muted); margin-bottom:8px; }
.r-qr { display:inline-block; padding:8px; background:#fff; border-radius:8px; }
.r-qr svg { display:block; }
.r-manage-wrap {
  margin-top:16px; padding:12px; background:var(--stat-bg); border-radius:8px;
}
.r-manage-label { font-size:12px; color:var(--text-muted); margin-bottom:6px; }
.r-manage-link {
  font-size:12px; color:var(--accent); word-break:break-all;
}
.r-pw-info {
  margin-top:12px; padding:8px 12px; background:var(--stat-bg); border-radius:8px;
  font-size:13px; color:var(--text-sec);
}
.text-link {
  display:inline-block; margin-top:14px; color:var(--accent);
  text-decoration:none; font-size:14px; cursor:pointer;
}
.text-link:hover { text-decoration:underline; }

/* Message card */
.msg-card {
  background:var(--card); border-radius:16px; padding:48px;
  text-align:center; box-shadow:var(--card-shadow);
}
.msg-card h1 { font-size:24px; margin-bottom:12px; -webkit-text-fill-color:var(--danger); background:none; }
.msg-card p { color:var(--text-sec); line-height:1.6; margin-bottom:20px; }
.link-btn { color:var(--accent); text-decoration:none; font-size:14px; }
.link-btn:hover { text-decoration:underline; }

/* Download card */
.dl-card {
  background:var(--card); border-radius:16px; padding:40px;
  box-shadow:var(--card-shadow); text-align:center;
}
.dl-card h1 {
  font-size:20px; margin-bottom:24px; word-break:break-all;
  -webkit-text-fill-color:var(--text); background:none;
}
.dl-icon { font-size:60px; margin-bottom:16px; }
.info-grid { display:grid; grid-template-columns:auto 1fr; gap:8px 16px; text-align:left; margin-bottom:28px; }
.info-grid .label { color:var(--text-muted); font-size:14px; }
.info-grid .value { color:var(--text); font-size:14px; font-weight:500; }
.dl-card .btn-block { margin-bottom:16px; }
.dl-actions { margin-top:8px; }
.dl-actions .text-link { margin-top:0; font-size:13px; }

/* Preview */
.preview-area { margin:0 0 24px; border-radius:12px; overflow:hidden; background:var(--input-bg); }
.preview-img { max-width:100%; max-height:400px; display:block; margin:0 auto; border-radius:8px; }
.preview-video { max-width:100%; max-height:400px; display:block; margin:0 auto; border-radius:8px; }
.preview-audio { width:100%; margin:16px 0; }
.preview-pdf { width:100%; height:500px; border:none; border-radius:8px; }

/* Password block */
.pw-block { margin:20px 0; padding:24px; background:var(--pw-bg); border-radius:12px; }
.pw-icon { font-size:40px; margin-bottom:12px; }
.pw-block p { color:var(--text-sec); margin-bottom:16px; font-size:14px; }
.pw-form { display:flex; gap:8px; max-width:320px; margin:0 auto; }
.pw-input {
  flex:1; padding:10px 14px; border:1px solid var(--border); border-radius:8px;
  background:var(--input-bg); color:var(--text); font-size:15px; outline:none; text-align:center;
  letter-spacing:2px; font-weight:600;
}
.pw-input:focus { border-color:var(--accent); }
.pw-error { color:var(--danger); font-size:13px; margin-top:8px; min-height:20px; }

/* Manage card */
.manage-card {
  background:var(--card); border-radius:16px; padding:40px;
  box-shadow:var(--card-shadow); margin-top:40px;
}
.manage-card h1 { font-size:24px; margin-bottom:16px; -webkit-text-fill-color:var(--text); background:none; }
.manage-status {
  display:inline-block; padding:4px 14px; border-radius:20px; font-size:13px;
  font-weight:600; margin-bottom:24px;
}
.status-active { background:rgba(52,199,89,0.15); color:var(--success); }
.status-expired { background:rgba(255,59,48,0.15); color:var(--danger); }
.manage-link-section { margin-top:24px; }
.manage-link-section label { font-size:13px; color:var(--text-sec); display:block; margin-bottom:6px; }
.manage-actions { margin-top:24px; display:flex; flex-direction:column; gap:12px; align-items:center; }

/* Footer */
.footer {
  text-align:center; margin-top:32px; font-size:13px;
  color:var(--footer-text); line-height:2;
}
.footer a { color:var(--footer-link); text-decoration:none; }
.footer a:hover { text-decoration:underline; color:var(--accent); }

/* Toast */
.toast {
  position:fixed; top:20px; left:50%; transform:translateX(-50%);
  background:var(--danger); color:#fff; padding:12px 24px;
  border-radius:10px; font-size:14px; display:none; z-index:999;
  box-shadow:0 4px 20px rgba(255,59,48,0.3);
}
.toast.show { display:block; animation:fadeInOut 3s forwards; }
@keyframes fadeInOut {
  0% { opacity:0; transform:translateX(-50%) translateY(-10px); }
  10% { opacity:1; transform:translateX(-50%) translateY(0); }
  80% { opacity:1; } 100% { opacity:0; }
}
.text-muted { color:var(--text-muted); font-size:14px; }

/* Burn toggle */
.burn-toggle { display:flex; align-items:center; gap:8px; padding:12px 16px; background:var(--card);
  border:1px solid var(--border); border-radius:10px; cursor:pointer; font-size:14px; color:var(--text); }
.burn-toggle input[type=checkbox] { width:18px; height:18px; accent-color:var(--accent); }
.burn-hint { font-size:12px; color:var(--text-muted); margin-left:4px; }
.burn-badge { display:inline-block; background:rgba(255,107,107,0.15); color:#ff6b6b; padding:4px 12px;
  border-radius:20px; font-size:13px; font-weight:600; margin-bottom:12px; }
.r-burn-info { margin-top:8px; padding:8px 12px; background:rgba(255,107,107,0.1);
  border-radius:8px; font-size:13px; color:#ff6b6b; }

/* Language toggle */


/* Top nav */
.top-nav { position:fixed; top:0; left:0; right:0; z-index:50; display:flex; justify-content:flex-end;
  gap:12px; padding:8px 16px; font-size:13px; background:var(--card); border-bottom:1px solid var(--border);
  box-shadow:0 1px 4px rgba(0,0,0,0.05); }
.nav-link { color:var(--text-sec); text-decoration:none; }
.nav-link:hover { color:var(--accent); }
body { padding-top:40px; }

/* Pages (terms / privacy) */
.page-body .container { max-width:800px; padding:40px 20px; }
.page-body .back { margin-bottom:24px; }
.page-body .back a { color:var(--accent); text-decoration:none; font-size:14px; }
.page-body .back a:hover { text-decoration:underline; }
.page-body h1 {
  font-size:28px; font-weight:700; margin-bottom:8px; text-align:left;
  -webkit-text-fill-color:var(--text); background:none;
}
.page-body .meta { color:var(--text-sec); font-size:14px; margin-bottom:32px; }
.page-body h2 { font-size:20px; font-weight:600; margin-top:32px; margin-bottom:12px; -webkit-text-fill-color:var(--text); background:none; }
.page-body h3 { font-size:16px; font-weight:600; margin-top:24px; margin-bottom:8px; }
.page-body p { margin-bottom:16px; font-size:15px; line-height:1.8; }
.page-body ul { margin-bottom:16px; padding-left:24px; }
.page-body li { margin-bottom:6px; font-size:15px; line-height:1.8; }
.page-body strong { font-weight:600; }
.page-body hr { border:none; border-top:1px solid var(--border); margin:32px 0; }
.page-body a { color:var(--accent); }

/* Responsive */
@media (max-width:600px) {
  .container { width:95%; }
  h1 { font-size:22px; }
  .stats-bar { gap:12px; flex-wrap:wrap; }
  .stat-value { font-size:16px; }
  .dropzone { padding:28px 12px; }
  .expire-options { gap:5px; }
  .expire-btn { padding:5px 8px; font-size:11px; }
  .options-row { flex-direction:column; gap:8px; }
  .option-group { min-width:100%; }
  .result, .dl-card, .msg-card, .manage-card { padding:20px 14px; }
  .page-body .container { padding:16px 10px; }
  .page-body h1 { font-size:20px; }
  .page-body p, .page-body li { font-size:13px; }
  .preview-pdf { height:300px; }
  .preview-img, .preview-video { max-height:250px; }

  /* Top nav mobile */
  .top-nav { padding:6px 10px; font-size:12px; gap:8px; }
  .nav-link { font-size:12px; }

  /* Toggle bar mobile */
  .toggle-bar { top:46px; right:10px; }
  .toggle-btn { font-size:13px; padding:6px 10px; }

  /* Auth cards mobile */
  .auth-card { margin:30px auto; padding:28px 20px; }
  .auth-card input { padding:10px 12px; font-size:14px; }

  /* Tutorial mobile */
  .tutorial { padding:20px 12px; }
  .tutorial .step { flex-direction:column; gap:10px; padding:12px; }
  .tutorial .step-num { width:30px; height:30px; font-size:14px; }
  .tutorial .feature-grid { grid-template-columns:1fr 1fr; gap:8px; }
  .tutorial .feature-card { padding:12px; }

  /* Dashboard mobile */
  .dash-header { flex-direction:column; align-items:flex-start; }
  .dash-header .right { width:100%; justify-content:flex-end; }
  .file-table { font-size:12px; }
  .file-table th, .file-table td { padding:8px 6px; }
  .actions { flex-direction:column; gap:2px; }
  .actions button { font-size:10px; padding:3px 6px; }

  /* Modal mobile */
  .modal { padding:20px 16px; max-width:95%; }
  .modal input, .modal select { padding:8px; font-size:13px; }

  /* Chart mobile */
  .chart-wrap { padding:12px; }
  .chart-wrap h3 { font-size:13px; }

  /* R-link mobile */
  .r-link-wrap { flex-direction:column; }
  .r-link { font-size:13px; padding:10px; }
  .r-copy { width:100%; }
}