/* ─── Design System ─── */
:root {
  --bg: #0f1117;
  --bg2: #1a1d2e;
  --bg3: #242840;
  --card: #1e2235;
  --border: #2e3250;
  --accent: #6c63ff;
  --accent2: #8b85ff;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --text: #e2e4f0;
  --text2: #8890b5;
  --text3: #5a6285;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,.4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body { background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; min-height: 100vh; font-size: 14px; line-height: 1.6; }

/* ─── Auth ─── */
.auth-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: radial-gradient(ellipse at 50% 0%, #1e1040 0%, var(--bg) 70%); }
.auth-box { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; width: 100%; max-width: 420px; box-shadow: var(--shadow); }
.logo { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.auth-box h1 { font-size: 22px; }
.subtitle { color: var(--text2); margin-bottom: 24px; }

/* ─── Topbar ─── */
.topbar { background: var(--card); border-bottom: 1px solid var(--border); padding: 0 24px; height: 56px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 100; }
.topbar-brand { font-size: 17px; font-weight: 700; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.admin-badge { background: var(--accent); color: #fff; font-size: 10px; font-weight: 600; padding: 2px 7px; border-radius: 20px; margin-left: 6px; vertical-align: middle; }
.credits-badge { background: var(--bg3); border: 1px solid var(--border); border-radius: 20px; padding: 4px 12px; font-size: 13px; font-weight: 600; }
.user-name { color: var(--text2); }

/* ─── Container ─── */
.container { max-width: 1100px; margin: 0 auto; padding: 24px 20px; display: flex; flex-direction: column; gap: 20px; }

/* ─── Cards ─── */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.section-header h2 { font-size: 17px; }

/* ─── Buttons ─── */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 8px; border: none; cursor: pointer; font-size: 13px; font-weight: 600; transition: all .15s; text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent2); }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--bg3); }
.btn-danger { background: transparent; border: 1px solid var(--border); color: var(--danger); }
.btn-danger:hover { background: rgba(239,68,68,.1); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-full { width: 100%; justify-content: center; margin-top: 8px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ─── Forms ─── */
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.form-group label { font-size: 12px; font-weight: 600; color: var(--text2); text-transform: uppercase; letter-spacing: .05em; }
.form-group input, .form-group select, .form-group textarea { background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 9px 12px; color: var(--text); font-size: 14px; width: 100%; transition: border-color .15s; }
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--accent); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.input-row { display: flex; gap: 8px; align-items: center; }
.input-row input { flex: 1; }
.form-actions { display: flex; gap: 8px; margin-top: 12px; }
.form-panel { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.form-panel h3 { margin-bottom: 16px; font-size: 15px; }

/* ─── Tabs ─── */
.tabs { display: flex; gap: 4px; margin-bottom: 20px; border-bottom: 1px solid var(--border); }
.tab { background: none; border: none; color: var(--text2); padding: 10px 16px; cursor: pointer; font-size: 14px; border-bottom: 2px solid transparent; margin-bottom: -1px; transition: all .15s; }
.tab.active, .tab:hover { color: var(--text); border-bottom-color: var(--accent); }
.admin-tabs { display: flex; gap: 4px; margin-bottom: 0; border-bottom: 1px solid var(--border); }
.admin-tabs .tab { font-size: 13px; }

/* ─── Upload Zone ─── */
.upload-card h2 { margin-bottom: 16px; }
.upload-zone { border: 2px dashed var(--border); border-radius: var(--radius); padding: 40px; text-align: center; cursor: pointer; transition: all .2s; background: var(--bg2); }
.upload-zone:hover, .upload-zone.drag-over { border-color: var(--accent); background: rgba(108,99,255,.05); }
.upload-icon { font-size: 40px; margin-bottom: 12px; }
.upload-hint { color: var(--text3); font-size: 12px; margin-top: 4px; }
.selected-file { display: flex; align-items: center; justify-content: space-between; background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; margin-bottom: 16px; font-weight: 500; }

/* ─── Progress ─── */
.progress-bar { background: var(--bg2); border-radius: 20px; height: 8px; overflow: hidden; margin-bottom: 8px; }
.progress-fill { background: var(--accent); height: 100%; border-radius: 20px; transition: width .3s; }

/* ─── Video List ─── */
.video-list { display: flex; flex-direction: column; gap: 10px; }
.video-item { display: flex; align-items: center; justify-content: space-between; background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; gap: 12px; }
.video-info { flex: 1; min-width: 0; }
.video-name { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.video-meta { color: var(--text2); font-size: 12px; margin-top: 2px; }
.video-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.error-hint { cursor: help; color: var(--danger); }

/* ─── Status Badges ─── */
.status-badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 9px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.status-pending { background: rgba(245,158,11,.15); color: var(--warning); }
.status-processing { background: rgba(108,99,255,.15); color: var(--accent2); animation: pulse 2s infinite; }
.status-completed { background: rgba(34,197,94,.15); color: var(--success); }
.status-failed { background: rgba(239,68,68,.15); color: var(--danger); }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.6} }

/* ─── Stats Grid ─── */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; text-align: center; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--accent2); }
.stat-label { color: var(--text2); font-size: 12px; margin-top: 4px; }

/* ─── Tables ─── */
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th { text-align: left; padding: 8px 10px; color: var(--text2); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: .05em; border-bottom: 1px solid var(--border); }
.data-table td { padding: 10px; border-bottom: 1px solid rgba(46,50,80,.5); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255,255,255,.02); }
.actions { display: flex; gap: 6px; }
.role-badge { padding: 2px 8px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.role-admin { background: rgba(108,99,255,.2); color: var(--accent2); }
.role-user { background: rgba(139,133,255,.1); color: var(--text2); }

/* ─── Settings ─── */
.settings-group { margin-bottom: 28px; }
.settings-group h3 { font-size: 14px; font-weight: 700; color: var(--text2); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }

/* ─── Modal ─── */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; align-items: center; justify-content: center; z-index: 200; }
.modal-box { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; width: 100%; max-width: 420px; box-shadow: var(--shadow); }
.modal-box h3 { margin-bottom: 20px; font-size: 17px; }

/* ─── Toast ─── */
.toast { position: fixed; bottom: 24px; right: 24px; background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px 20px; font-size: 14px; box-shadow: var(--shadow); transform: translateY(20px); opacity: 0; transition: all .3s; z-index: 300; }
.toast.show { transform: translateY(0); opacity: 1; }
.toast-success { border-color: var(--success); }
.toast-error { border-color: var(--danger); }

/* ─── Language Switcher ─── */
.lang-switcher { display: flex; gap: 2px; background: var(--bg3); border-radius: 8px; padding: 3px; }
.lang-btn { background: none; border: none; color: var(--text2); font-size: 11px; font-weight: 700; letter-spacing: .04em; padding: 4px 8px; border-radius: 6px; cursor: pointer; transition: all .15s; }
.lang-btn:hover { color: var(--text); background: var(--border); }
.lang-btn.active { background: var(--accent); color: #fff; }

/* ─── Speaker Similarity Slider ─── */
.similarity-wrap { background: var(--bg3); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; margin-top: 6px; }
.similarity-labels { display: flex; justify-content: space-between; align-items: center; font-size: 11px; color: var(--text2); margin-bottom: 10px; }
.sim-value { background: var(--accent); color: #fff; font-size: 13px; font-weight: 800; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
input[type=range] { width: 100%; accent-color: var(--accent); cursor: pointer; }
.sim-hint { font-size: 12px; color: var(--accent2); margin-top: 8px; min-height: 16px; text-align: center; }

/* ─── Mode Cards ─── */
.mode-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 6px; }
.mode-card { background: var(--bg3); border: 2px solid var(--border); border-radius: 10px; padding: 12px 14px; cursor: pointer; transition: all .15s; }
.mode-card:hover { border-color: var(--accent2); }
.mode-card.active { border-color: var(--accent); background: rgba(108,99,255,.1); }
.mode-card-title { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.mode-card-desc { font-size: 11px; color: var(--text2); line-height: 1.4; }
@media (max-width: 540px) { .mode-cards { grid-template-columns: 1fr; } }

/* ─── Checkbox label ─── */
.checkbox-label { display: flex; align-items: center; gap: 10px; cursor: pointer; font-size: 13px; color: var(--text2); padding: 10px 14px; background: var(--bg3); border-radius: 10px; border: 1px solid var(--border); transition: border-color .15s; }
.checkbox-label:hover { border-color: var(--accent2); }
.checkbox-label input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; flex-shrink: 0; }
.checkbox-label span { flex: 1; }

/* ─── Misc ─── */
.hidden { display: none !important; }
.loading { color: var(--text2); padding: 20px; text-align: center; }
.empty-state { color: var(--text2); text-align: center; padding: 32px; }
.error-msg { color: var(--danger); font-size: 13px; margin-bottom: 8px; background: rgba(239,68,68,.1); padding: 8px 12px; border-radius: 8px; border: 1px solid rgba(239,68,68,.2); }
.text-green { color: var(--success); font-weight: 600; }
.text-red { color: var(--danger); font-weight: 600; }

/* ─── Balance Banner ─── */
.balance-banner { background: linear-gradient(135deg, #1e1b4b 0%, var(--card) 100%); border: 1px solid var(--accent); border-radius: var(--radius); padding: 20px 28px; display: flex; align-items: center; gap: 32px; }
.balance-main {}
.balance-label { font-size: 11px; color: var(--text2); text-transform: uppercase; letter-spacing: .06em; font-weight: 600; }
.balance-amount { font-size: 32px; font-weight: 800; color: #fff; letter-spacing: -.02em; margin-top: 2px; }
.balance-seconds { font-size: 20px; font-weight: 700; color: var(--accent2); margin-top: 2px; }
.balance-divider { width: 1px; height: 48px; background: var(--border); flex-shrink: 0; }
.balance-time, .balance-rate { min-width: 150px; }

@media (max-width: 640px) {
  .balance-banner { flex-direction: column; gap: 16px; }
  .balance-divider { width: 100%; height: 1px; }
}
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .video-item { flex-direction: column; align-items: flex-start; }
}