:root {
  --bg: #0f1117;
  --bg-2: #161922;
  --surface: #1c2030;
  --surface-2: #232838;
  --border: #2d3346;
  --text: #e4e7ef;
  --text-muted: #8b91a7;
  --brand: #6c5ce7;
  --brand-2: #a29bfe;
  --brand-soft: rgba(108, 92, 231, 0.12);
  --accent: #00cec9;
  --success: #00b894;
  --warning: #fdcb6e;
  --danger: #e84118;
  --radius: 10px;
  --radius-sm: 6px;
  --mono: "JetBrains Mono", "SF Mono", "Cascadia Code", Consolas, monospace;
  --sans: -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.6;
}
.app { max-width: 1280px; margin: 0 auto; padding: 20px; min-height: 100vh; display: flex; flex-direction: column; gap: 18px; }

/* Header */
.app-header { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 14px; }
.logo-icon { font-size: 36px; }
.app-header h1 { font-size: 22px; font-weight: 600; }
.subtitle { color: var(--text-muted); font-size: 12px; margin-top: 2px; }
.tool-status { display: flex; gap: 6px; flex-wrap: wrap; }
.badge { font-size: 11px; padding: 3px 9px; border-radius: 20px; font-family: var(--mono); }
.badge-ok { background: rgba(0,184,148,0.15); color: var(--success); border: 1px solid rgba(0,184,148,0.3); }
.badge-warn { background: rgba(253,203,110,0.15); color: var(--warning); border: 1px solid rgba(253,203,110,0.3); }
.badge-info { background: rgba(139,145,167,0.15); color: var(--text-muted); border: 1px solid var(--border); }

/* Layout */
.main-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 18px; flex: 1; }
@media (max-width: 900px) { .main-grid { grid-template-columns: 1fr; } }

.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.panel-title { font-size: 15px; font-weight: 600; margin-bottom: 14px; color: var(--text); }

/* Dropzone */
.dropzone { border: 2px dashed var(--border); border-radius: var(--radius); padding: 36px 20px; text-align: center; cursor: pointer; transition: all .2s; }
.dropzone:hover, .dropzone.dragover { border-color: var(--brand); background: var(--brand-soft); }
.dz-inner { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.dz-icon { font-size: 40px; }
.dz-text { font-weight: 500; }
.dz-hint { color: var(--text-muted); font-size: 12px; }

.upload-progress { margin-top: 12px; display: flex; align-items: center; gap: 10px; }
.progress-bar { flex: 1; height: 8px; background: var(--surface-2); border-radius: 4px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--brand), var(--brand-2)); width: 0; transition: width .2s; }
.progress-text { font-family: var(--mono); font-size: 12px; color: var(--text-muted); min-width: 36px; text-align: right; }

/* Uploaded list */
.uploaded-list { margin: 14px 0; display: flex; flex-direction: column; gap: 6px; max-height: 140px; overflow-y: auto; }
.empty-hint { color: var(--text-muted); font-size: 13px; text-align: center; padding: 10px; }
.file-item { display: flex; align-items: center; gap: 10px; padding: 8px 12px; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; transition: all .15s; }
.file-item:hover { border-color: var(--brand); }
.file-item input[type=radio] { accent-color: var(--brand); }
.file-name { flex: 1; font-size: 13px; word-break: break-all; }
.file-size { font-family: var(--mono); font-size: 11px; color: var(--text-muted); }

/* Options */
.options { display: flex; flex-direction: column; gap: 14px; }
.opt-group { display: flex; flex-direction: column; gap: 5px; }
.opt-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.opt-label { font-size: 12px; color: var(--text-muted); font-weight: 500; }
.opt-input { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 8px 12px; color: var(--text); font-size: 13px; font-family: var(--sans); }
.opt-input:focus { outline: none; border-color: var(--brand); }
.opt-input::placeholder { color: var(--text-muted); }

.opt-checks { display: flex; flex-direction: column; gap: 8px; }
.check-item { display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; gap: 0 8px; align-items: start; padding: 8px 10px; background: var(--surface-2); border-radius: var(--radius-sm); border: 1px solid var(--border); cursor: pointer; }
.check-item input[type=checkbox] { grid-row: span 2; margin-top: 3px; accent-color: var(--brand); width: 16px; height: 16px; }
.check-item span { font-size: 13px; font-weight: 500; }
.check-item small { grid-column: 2; font-size: 11px; color: var(--text-muted); }
.check-inline { display: inline-flex; align-items: center; gap: 5px; font-size: 13px; margin-right: 12px; }
.check-inline input { accent-color: var(--brand); }

.opt-advanced { margin-top: 4px; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px; }
.opt-advanced summary { cursor: pointer; font-size: 13px; color: var(--text-muted); padding: 4px 0; }
.opt-advanced[open] summary { margin-bottom: 10px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 20px; border: none; border-radius: var(--radius-sm); font-size: 14px; font-weight: 600; cursor: pointer; transition: all .15s; font-family: var(--sans); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; width: 100%; margin-top: 16px; padding: 12px; }
.btn-primary:not(:disabled):hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(108,92,231,0.4); }
.btn-sm { padding: 5px 12px; font-size: 12px; background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }
.btn-sm:hover { border-color: var(--brand); }
.btn-flash { background: var(--success) !important; color: #fff !important; border-color: var(--success) !important; }
.btn-download { background: linear-gradient(135deg, var(--success), #55efc4); color: #fff; text-decoration: none; margin-top: 14px; }
.btn-icon { font-size: 16px; }

/* Log panel */
.log-panel { display: flex; flex-direction: column; }
.log-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.log-actions { display: flex; align-items: center; gap: 10px; }
.status-tag { font-size: 11px; padding: 4px 10px; border-radius: 20px; font-family: var(--mono); background: var(--surface-2); border: 1px solid var(--border); color: var(--text-muted); }
.status-tag.running { background: rgba(108,92,231,0.15); color: var(--brand-2); border-color: var(--brand); }
.status-tag.success { background: rgba(0,184,148,0.15); color: var(--success); border-color: rgba(0,184,148,0.3); }
.status-tag.error { background: rgba(232,65,24,0.15); color: var(--danger); border-color: rgba(232,65,24,0.3); }

.log-console { background: #0a0c12; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px; font-family: var(--mono); font-size: 12px; line-height: 1.7; flex: 1; overflow-y: auto; max-height: 460px; min-height: 280px; }
.log-line { white-space: pre-wrap; word-break: break-all; }
.log-sys { color: var(--text-muted); }
.log-info { color: var(--text); }
.log-step { color: var(--brand-2); font-weight: 600; margin-top: 4px; }
.log-warn { color: var(--warning); }
.log-error { color: var(--danger); }

/* Result */
.result-area { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }
.result-title { font-size: 14px; margin-bottom: 10px; }
.result-stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 8px; margin-bottom: 10px; }
.stat-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px; }
.stat-card .stat-label { font-size: 11px; color: var(--text-muted); }
.stat-card .stat-value { font-size: 16px; font-weight: 600; font-family: var(--mono); margin-top: 2px; }

/* Footer */
.app-footer { text-align: center; color: var(--text-muted); font-size: 12px; padding: 10px; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 8px; align-items: center; }
.app-footer .footer-left { display: flex; gap: 16px; align-items: center; }
.app-footer .check-inline { font-size: 13px; color: var(--text); cursor: pointer; }

/* Records */
.records-panel { padding: 16px; }
.records-list { display: flex; flex-direction: column; gap: 8px; max-height: 400px; overflow-y: auto; }
.record-item { display: flex; justify-content: space-between; align-items: center; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 14px; }
.record-info { flex: 1; min-width: 0; }
.record-name { font-weight: 600; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.record-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 11px; color: var(--text-muted); margin-top: 4px; }
.record-actions { display: flex; gap: 6px; flex-shrink: 0; margin-left: 12px; }
.btn-danger { background: rgba(232, 65, 24, 0.15); border-color: rgba(232, 65, 24, 0.4); color: var(--danger); }
.btn-danger:hover { background: rgba(232, 65, 24, 0.25); }
.records-count { font-size: 12px; color: var(--text-muted); }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* Unsigned notice */
.unsigned-notice { margin-top: 10px; padding: 10px 14px; background: rgba(253, 203, 110, 0.08); border: 1px solid rgba(253, 203, 110, 0.25); border-radius: var(--radius-sm); font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 8px; }
.unsigned-notice .notice-icon { font-size: 14px; }
.unsigned-notice strong { color: var(--warning); }

/* Sign notice in result */
.sign-notice { margin: 10px 0; padding: 10px 14px; background: rgba(253, 203, 110, 0.1); border: 1px solid rgba(253, 203, 110, 0.3); border-radius: var(--radius-sm); font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 8px; }
.sign-notice .notice-icon { font-size: 14px; }
.sign-notice strong { color: var(--warning); }
.sign-notice code { background: var(--surface-2); padding: 2px 6px; border-radius: 4px; font-family: var(--mono); font-size: 11px; color: var(--accent); }