* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #0ea5b7;
  --primary-dark: #0e7490;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --ok: #16a34a;
  --err: #dc2626;
  --radius: 12px;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* 导航 */
.navbar { background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.nav-inner { max-width: 860px; margin: 0 auto; padding: 0 20px; height: 60px; display: flex; align-items: center; gap: 24px; }
.logo { font-weight: 700; font-size: 17px; color: var(--primary-dark); white-space: nowrap; }
.nav-tabs { display: flex; gap: 6px; flex: 1; }
.tab { border: none; background: none; padding: 8px 16px; border-radius: 8px; cursor: pointer; font-size: 15px; color: var(--muted); }
.tab.active { background: #ecfeff; color: var(--primary-dark); font-weight: 600; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.username { color: var(--muted); font-size: 14px; }
.btn-ghost { border: 1px solid var(--border); background: none; padding: 6px 14px; border-radius: 8px; cursor: pointer; color: var(--muted); font-size: 14px; }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary-dark); }

.container { max-width: 860px; margin: 0 auto; padding: 28px 20px 60px; }

/* 登录卡 */
.auth-card { max-width: 400px; margin: 48px auto; background: var(--card); border-radius: var(--radius); padding: 36px 32px; box-shadow: 0 4px 24px rgba(15, 118, 110, .08); }
.auth-title { font-size: 22px; text-align: center; color: var(--primary-dark); }
.auth-sub { text-align: center; color: var(--muted); font-size: 13px; margin: 8px 0 24px; }
.auth-tabs { display: flex; background: var(--bg); border-radius: 10px; padding: 4px; margin-bottom: 22px; }
.auth-tab { flex: 1; border: none; background: none; padding: 9px; border-radius: 8px; cursor: pointer; color: var(--muted); font-size: 15px; }
.auth-tab.active { background: var(--card); color: var(--primary-dark); font-weight: 600; box-shadow: 0 1px 4px rgba(0,0,0,.06); }
.auth-form label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 16px; }
.auth-form input { width: 100%; margin-top: 6px; padding: 11px 13px; border: 1px solid var(--border); border-radius: 9px; font-size: 15px; outline: none; }
.auth-form input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(14,165,183,.12); }

/* 按钮 */
.btn-primary { background: var(--primary); color: #fff; border: none; padding: 11px 22px; border-radius: 9px; font-size: 15px; font-weight: 600; cursor: pointer; transition: background .15s; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:disabled { background: #94a3b8; cursor: not-allowed; }
.btn-block { width: 100%; }
.btn-lg { padding: 14px; font-size: 16px; }

/* 卡片 */
.card { background: var(--card); border-radius: var(--radius); padding: 24px; margin-bottom: 20px; box-shadow: 0 2px 12px rgba(15,23,42,.05); }
.card-title { font-size: 16px; margin-bottom: 16px; }

/* 拖拽上传 */
.dropzone { border: 2px dashed #cbd5e1; border-radius: var(--radius); padding: 30px 20px; text-align: center; cursor: pointer; transition: all .15s; background: #f8fafc; }
.dropzone:hover, .dropzone.drag { border-color: var(--primary); background: #ecfeff; }
.dz-icon { font-size: 34px; }
.dz-text { font-size: 15px; font-weight: 600; margin: 8px 0 4px; }
.dz-hint { font-size: 12.5px; color: var(--muted); }
.dropzone.ok { border-color: var(--ok); border-style: solid; background: #f0fdf4; }
.file-meta { margin-top: 10px; font-size: 13px; color: var(--primary-dark); background: #ecfeff; padding: 8px 12px; border-radius: 8px; word-break: break-all; }

/* 进度 */
.progress-wrap { margin-top: 20px; }
.step { display: flex; align-items: center; gap: 10px; padding: 7px 0; font-size: 14px; color: var(--muted); }
.step-dot { width: 10px; height: 10px; border-radius: 50%; background: #cbd5e1; flex-shrink: 0; }
.step.active { color: var(--text); font-weight: 600; }
.step.active .step-dot { background: var(--primary); box-shadow: 0 0 0 4px rgba(14,165,183,.18); }
.step.done { color: var(--ok); }
.step.done .step-dot { background: var(--ok); }
.step-pct { margin-left: auto; font-variant-numeric: tabular-nums; font-size: 13px; }
.bar { height: 8px; background: var(--bg); border-radius: 6px; overflow: hidden; margin-top: 12px; }
.bar-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), #22d3ee); border-radius: 6px; transition: width .25s; }

/* 结果 */
.result { margin-top: 20px; padding: 20px; background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: var(--radius); text-align: center; }
.result-ok { font-weight: 700; color: var(--ok); font-size: 16px; }
.result-name { margin-top: 8px; font-weight: 600; word-break: break-all; }
.result-size { color: var(--muted); font-size: 13px; margin: 2px 0 8px; }
.result-url { font-size: 12px; color: var(--muted); word-break: break-all; background: #fff; padding: 6px 10px; border-radius: 6px; margin-bottom: 14px; }
.result .btn-primary { margin-top: 6px; }

/* 历史 */
.history-list { display: flex; flex-direction: column; gap: 12px; }
.h-item { display: flex; align-items: center; gap: 14px; padding: 14px; border: 1px solid var(--border); border-radius: 10px; }
.h-info { flex: 1; min-width: 0; }
.h-name { font-weight: 600; font-size: 14.5px; word-break: break-all; }
.h-sub { font-size: 12.5px; color: var(--muted); margin-top: 2px; }
.badge { font-size: 12px; padding: 2px 9px; border-radius: 20px; }
.badge.ok { background: #dcfce7; color: #15803d; }
.badge.fail { background: #fee2e2; color: #b91c1c; }
.h-actions { display: flex; gap: 8px; flex-shrink: 0; }
.h-btn { border: none; padding: 7px 14px; border-radius: 8px; font-size: 13px; cursor: pointer; }
.h-btn.dl { background: var(--primary); color: #fff; }
.h-btn.dl:hover { background: var(--primary-dark); }
.h-btn.del { background: #f1f5f9; color: var(--muted); }
.h-btn.del:hover { background: #fee2e2; color: var(--err); }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }

/* 错误提示 */
.form-error { background: #fef2f2; color: var(--err); border: 1px solid #fecaca; padding: 10px 14px; border-radius: 9px; font-size: 14px; margin-top: 14px; }
.auth-form .form-error { margin-top: 0; margin-bottom: 14px; }

@media (max-width: 600px) {
  .nav-inner { gap: 10px; }
  .logo { font-size: 14px; }
  .h-item { flex-wrap: wrap; }
}