/* =============================================================
   Live Recorder · Design System
   紧凑 NAS 管理台 · 信息优先 + 低动画 + 移动适配
   Base: Element Plus 2.x overrides
   ============================================================= */

:root {
  color-scheme: light;
  --font-sans: "Segoe UI Variable", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, monospace;
  font-family: var(--font-sans);
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  -webkit-font-smoothing: antialiased;

  /* neutrals */
  --bg-base: #eef1f6;
  --bg-subtle: #e7ebf2;
  --surface: #ffffff;
  --surface-raised: #ffffff;
  --surface-muted: #f4f7fb;
  --surface-strong: #eef2f8;
  --surface-hover: #eef2f8;
  --border-subtle: #e3e7ef;
  --border-base: #d2d8e3;
  --text-primary: #0f172a;
  --text-secondary: #45526a;
  --text-muted: #6a7689;
  --text-soft: #97a1b3;

  /* sidebar */
  --side-bg: #f3f5f9;
  --side-border: #e3e7ef;
  --side-title: #7a8699;
  --side-item: #44526b;
  --side-item-hover-bg: rgba(26, 86, 219, 0.07);
  --side-item-hover: #1e40af;
  --side-active-bg: rgba(26, 86, 219, 0.10);
  --side-active: #1a56db;

  /* brand */
  --accent: #1a56db;
  --accent-strong: #1e40af;
  --accent-soft: rgba(26, 86, 219, 0.12);
  --accent-soft-2: rgba(26, 86, 219, 0.07);
  --info: #2563eb;
  --info-soft: rgba(37, 99, 235, 0.11);
  --success: #16a34a;
  --success-soft: rgba(22, 163, 74, 0.12);
  --warning: #d97706;
  --warning-soft: rgba(217, 119, 6, 0.13);
  --danger: #dc2626;
  --danger-soft: rgba(220, 38, 38, 0.11);
  --purple: #7c3aed;
  --purple-soft: rgba(124, 58, 237, 0.11);

  /* elevation */
  --shadow-xs: 0 1px 3px rgba(16, 24, 40, 0.09), 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.10), 0 1px 3px rgba(16, 24, 40, 0.06);
  --shadow-md: 0 8px 20px rgba(16, 24, 40, 0.12), 0 2px 6px rgba(16, 24, 40, 0.07);
  --shadow-lg: 0 16px 40px rgba(16, 24, 40, 0.16), 0 4px 10px rgba(16, 24, 40, 0.08);
  --shadow-float: 0 24px 56px rgba(16, 24, 40, 0.22);

  /* radius */
  --radius-xs: 7px;
  --radius-sm: 9px;
  --radius-md: 14px;
  --radius-lg: 20px;

  /* layout */
  --sidebar-w: 244px;
  --sidebar-w-collapsed: 72px;
  --topbar-h: 62px;
  --page-max: 1320px;
  --page-gap: 16px;
  --content-padding: 20px;
  --content-padding-mobile: 14px;
  --control-height: 40px;
  --control-height-sm: 34px;
  --table-row-padding: 14;
  --header-row-height: 64px;
}

html[data-density="compact"] {
  --page-gap: 18px;
  --content-padding: 20px;
  --content-padding-mobile: 12px;
  --control-height: 36px;
  --control-height-sm: 30px;
  --table-row-padding: 12px;
  --header-row-height: 56px;
  --topbar-h: 56px;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg-base: #0a1120;
  --bg-subtle: #0f172a;
  --surface: #121c30;
  --surface-raised: #162238;
  --surface-muted: #16223899;
  --surface-strong: #1b2942;
  --surface-hover: #1b2942;
  --border-subtle: #1f2c44;
  --border-base: #2c3a55;
  --text-primary: #e9eefb;
  --text-secondary: #b6c4dd;
  --text-muted: #8295b3;
  --text-soft: #647a9a;

  --side-bg: #0c1424;
  --side-border: #1a2740;
  --side-title: #4a607d;
  --side-item: #8295b3;
  --side-item-hover-bg: rgba(255, 255, 255, 0.05);
  --side-item-hover: #d4def0;
  --side-active-bg: rgba(96, 165, 250, 0.18);
  --side-active: #93c5fd;

  --accent: #60a5fa;
  --accent-strong: #3b82f6;
  --accent-soft: rgba(96, 165, 250, 0.18);
  --accent-soft-2: rgba(96, 165, 250, 0.10);
  --info: #60a5fa;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;

  --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-float: 0 24px 56px rgba(0, 0, 0, 0.65);
}

/* ============================ Element Plus overrides ============================ */
#app {
  --el-color-primary: var(--accent);
  --el-color-primary-light-3: #5b8cf0;
  --el-color-primary-light-5: #7ba4f5;
  --el-color-primary-light-7: #a8c3fa;
  --el-color-primary-light-9: #e8f0ff;
  --el-color-primary-dark-2: var(--accent-strong);
  --el-color-success: var(--success);
  --el-color-warning: var(--warning);
  --el-color-danger: var(--danger);
  --el-text-color-primary: var(--text-primary);
  --el-text-color-regular: var(--text-secondary);
  --el-text-color-secondary: var(--text-muted);
  --el-border-color: var(--border-base);
  --el-border-color-light: var(--border-subtle);
  --el-border-radius-base: var(--radius-xs);
  --el-bg-color: transparent;
  --el-bg-color-page: var(--bg-base);
  --el-bg-color-overlay: var(--surface);
  --el-fill-color: var(--surface-muted);
  --el-fill-color-blank: var(--surface);
  --el-fill-color-light: var(--surface-muted);
  --el-fill-color-lighter: var(--surface-muted);
  --el-disabled-bg-color: var(--surface-muted);
  --el-disabled-text-color: var(--text-soft);
  --el-text-color-placeholder: var(--text-soft);
  --el-mask-color: rgba(15, 23, 42, 0.54);
}

html[data-theme="dark"] #app {
  --el-color-primary-light-3: #93c5fd;
  --el-color-primary-light-5: #bfdbfe;
  --el-color-primary-light-7: #dbeafe;
  --el-color-primary-light-9: #eff6ff;
  --el-mask-color: rgba(3, 7, 14, 0.72);
}

/* ============================ Base ============================ */
* { box-sizing: border-box; }
html, body, #app { margin: 0; min-height: 100%; }
body {
  color: var(--text-primary);
  background: var(--bg-base);
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: var(--border-base); border-radius: 99px; border: 3px solid transparent; background-clip: content-box; }
*::-webkit-scrollbar-thumb:hover { background: var(--text-soft); background-clip: content-box; }
*::-webkit-scrollbar-track { background: transparent; }

::selection { background: var(--accent-soft); }

/* ============================ Page layout ============================ */
.page-stack { display: grid; gap: var(--page-gap); width: min(100%, var(--page-max)); margin: 0 auto; }
.page-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.page-header > div:first-child { flex: 1; min-width: 0; }
.page-title { margin: 0; font-size: 24px; font-weight: 750; letter-spacing: -.02em; line-height: 1.25; color: var(--text-primary); }
.page-subtitle { max-width: 76ch; margin: 8px 0 0; color: var(--text-muted); font-size: 13.5px; line-height: 1.6; }
.page-kicker { margin-bottom: 7px; color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.page-toolbar, .header-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; flex-shrink: 0; }

/* cards */
.surface-card {
  --el-card-bg-color: transparent;
  border-radius: var(--radius-md); border: 1px solid var(--border-subtle);
  background: var(--surface); box-shadow: var(--shadow-xs);
}
.surface-card:hover { box-shadow: var(--shadow-sm); }
.surface-card .el-card__body { padding: 18px; }

/* stat grid / KPI cards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.stat-card {
  display: grid; gap: 6px; min-height: auto; padding: 12px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle); background: var(--surface); box-shadow: none;
  position: relative; overflow: hidden;
}
.stat-card:hover { border-color: var(--border-base); }
.stat-card__label { color: var(--text-muted); font-size: 12.5px; font-weight: 600; }
.stat-card__value { color: var(--text-primary); font-size: 24px; font-weight: 750; letter-spacing: -.03em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.stat-card__hint { color: var(--text-muted); font-size: 11.5px; line-height: 1.45; font-weight: 500; }

/* section */
.section-title { margin: 0 0 6px; color: var(--text-primary); font-size: 16px; font-weight: 700; letter-spacing: -.01em; }
.section-subtitle { margin: 0; color: var(--text-muted); font-size: 12.5px; line-height: 1.7; }
.section-header, .toolbar-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding-bottom: 18px; border-bottom: 1px solid var(--border-subtle); }
.toolbar-row { margin-bottom: 18px; }

/* table */
.table-scroll-shell { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.cell-title { color: var(--text-primary); font-size: 15px; font-weight: 700; line-height: 1.45; }
.cell-subtitle { margin-top: 2px; color: var(--text-muted); font-size: 12px; line-height: 1.6; font-weight: 500; }
.cell-mono, .table-date-text, .monospace { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.cell-mono { margin-top: 4px; color: var(--text-muted); font-size: 12px; word-break: break-all; }
.table-date-text { color: var(--text-muted); font-size: 12px; white-space: nowrap; }
.path-text, .log-detail, .detail-popover { color: var(--text-secondary); font-size: 12px; line-height: 1.65; white-space: pre-wrap; overflow-wrap: anywhere; }

/* badges/tags */
.badge-row { display: flex; flex-wrap: wrap; gap: 8px; }
.info-pill, .token-chip {
  display: inline-flex; align-items: center; min-height: 28px; padding: 0 10px;
  border-radius: 99px; border: 1px solid var(--border-subtle); background: var(--surface);
  color: var(--text-secondary); font-size: 12px; font-weight: 600;
}
.token-chip { background: var(--accent-soft); color: var(--accent); border-color: transparent; }

/* mobile data cards */
.data-card-list { display: grid; gap: 12px; }
.data-card { display: grid; gap: 14px; padding: 16px; border-radius: var(--radius-md); border: 1px solid var(--border-subtle); background: var(--surface-muted); }
.data-card__header { display: flex; align-items: flex-start; gap: 14px; }
.data-card__title { color: var(--text-primary); font-size: 15px; font-weight: 700; line-height: 1.4; }
.data-card__subtitle { margin-top: 4px; color: var(--text-secondary); font-size: 13px; }
.data-card__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 12px; margin: 0; }
.data-card__grid > div { display: grid; gap: 4px; }
.data-card__grid dt { color: var(--text-muted); font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.data-card__grid dd { margin: 0; color: var(--text-primary); font-size: 13px; line-height: 1.6; }
.data-card__actions, .action-row { display: flex; flex-wrap: wrap; gap: 10px; }

/* highlights */
.highlight-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.highlight-item { display: grid; gap: 12px; padding: 18px; border-radius: var(--radius-md); border: 1px solid var(--border-subtle); background: var(--surface-muted); }
.highlight-item__label { color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.highlight-item__title { color: var(--text-primary); font-size: 16px; font-weight: 700; }
.highlight-item__meta, .highlight-item__stats, .highlight-item__footer { display: flex; flex-wrap: wrap; gap: 8px 12px; color: var(--text-secondary); font-size: 12px; }
.highlight-item__summary { color: var(--text-secondary); font-size: 13px; line-height: 1.7; }

/* alerts */
.page-error-alert, .page-stream-alert, .backend-alert { border-radius: var(--radius-md); border: 1px solid var(--border-subtle); }

/* responsive helpers */
.desktop-only { display: block; }
.mobile-only { display: none; }

/* ============================ Element Plus component overrides ============================ */

/* buttons */
.el-button { min-height: var(--control-height); padding: 0 15px; border-radius: var(--radius-sm); font-weight: 700; letter-spacing: 0; transition: all .15s ease; }
.el-button:not(.is-disabled):hover { transform: none; }
.el-button.el-button--default:not(.is-text):not(.is-link) { border-color: var(--border-base); background: var(--surface); color: var(--text-secondary); box-shadow: none; }
.el-button.el-button--default:not(.is-text):not(.is-link):hover { border-color: var(--text-soft); color: var(--text-primary); box-shadow: var(--shadow-xs); }

/* primary button — flat, blue glow */
.el-button.el-button--primary {
  background: var(--accent) !important; border-color: var(--accent-strong) !important; color: #fff !important;
  box-shadow: 0 1px 3px rgba(26, 86, 219, 0.4), 0 4px 14px rgba(26, 86, 219, 0.2);
}
.el-button.el-button--primary:not(.is-disabled):hover {
  background: var(--accent-strong) !important; border-color: var(--accent-strong) !important; color: #fff !important;
  box-shadow: 0 2px 5px rgba(26, 86, 219, 0.45), 0 6px 18px rgba(26, 86, 219, 0.28);
}
.el-button.is-plain:not(.el-button--danger):not(.el-button--primary) { background: var(--accent-soft) !important; border-color: transparent !important; color: var(--accent) !important; }
.el-button.el-button--danger.is-plain { background: var(--danger-soft) !important; border-color: transparent !important; color: var(--danger) !important; }
.el-button.is-text, .el-button.is-link { min-height: auto; padding-inline: 8px; }
.el-button.is-disabled, .el-button.is-disabled:hover, .el-button.is-disabled:active { box-shadow: none !important; transform: none !important; }

/* inputs */
.el-input, .el-select, .el-date-editor, .el-input-number { width: 100%; }
.el-input__wrapper, .el-select__wrapper, .el-textarea__inner, .el-input-number { border-radius: var(--radius-sm); background: var(--surface); box-shadow: inset 0 0 0 1px var(--border-subtle) !important; }
.el-input__wrapper:hover, .el-select__wrapper:hover, .el-textarea__inner:hover { box-shadow: inset 0 0 0 1px var(--border-base) !important; }
.el-input__wrapper.is-focus, .el-select__wrapper.is-focused, .el-textarea__inner:focus, .el-input-number:focus-within { background: var(--surface); box-shadow: inset 0 0 0 1px var(--accent), 0 0 0 3px var(--accent-soft) !important; }
.el-textarea__inner { line-height: 1.7; }

/* forms */
.el-form-item { margin-bottom: 18px; }
.el-form-item__label { padding-bottom: 8px; color: var(--text-primary) !important; font-size: 13px; font-weight: 600; }
.el-switch { --el-switch-on-color: var(--accent); --el-switch-off-color: var(--border-base); }

/* tags */
.el-tag { border: 1px solid transparent; border-radius: 99px; min-height: 22px; padding: 0 8px; font-weight: 600; font-size: 12px; }
.el-tag--success { background: var(--success-soft); color: var(--success); }
.el-tag--warning { background: var(--warning-soft); color: var(--warning); }
.el-tag--danger { background: var(--danger-soft); color: var(--danger); }
.el-tag--info, .el-tag.el-tag--primary { background: var(--accent-soft); color: var(--accent); }

/* tables */
.el-table {
  --el-table-border-color: transparent; --el-table-header-bg-color: transparent;
  --el-table-bg-color: transparent; --el-table-row-hover-bg-color: var(--surface-hover);
  --el-table-current-row-bg-color: var(--accent-soft); --el-fill-color-blank: transparent;
  background: transparent;
}
.el-table::before, .el-table__inner-wrapper::before { display: none; }
.el-table th.el-table__cell { padding: 12px 20px; border-bottom: 2px solid var(--border-base); background: #eef2f8; }
html[data-theme="dark"] .el-table th.el-table__cell { background: #16223a; }
.el-table th.el-table__cell > .cell { color: var(--text-muted); font-size: 12px; font-weight: 700; letter-spacing: .02em; text-transform: uppercase; }
.el-table td.el-table__cell { padding: 14px 20px; border-bottom: 1px solid var(--border-subtle); background: transparent; }
.el-table tr { background: transparent; }
.el-table tbody tr:nth-child(even) { background: rgba(15, 23, 42, 0.018); }
html[data-theme="dark"] .el-table tbody tr:nth-child(even) { background: rgba(255, 255, 255, 0.02); }
.premium-table { min-width: 920px; }

/* descriptions */
.el-descriptions { --el-descriptions-table-border: 1px solid var(--border-subtle); }
.el-descriptions__body .el-descriptions__table { border-radius: var(--radius-sm); overflow: hidden; }
.el-descriptions__body .el-descriptions__label.el-descriptions__cell.is-bordered-label { background: var(--surface-muted); color: var(--text-muted); font-weight: 600; }
.el-descriptions__body .el-descriptions__content.el-descriptions__cell.is-bordered-content { background: var(--surface); color: var(--text-primary); }

/* dialogs */
.el-dialog { border-radius: var(--radius-md); border: 1px solid var(--border-base); background: var(--surface); box-shadow: var(--shadow-float); }
.el-message-box, .el-popover.el-popper, .el-select__popper.el-popper, .el-picker__popper.el-popper { border-color: var(--border-subtle); background: var(--surface); color: var(--text-primary); box-shadow: var(--shadow-float); }
.el-dropdown__popper.el-popper .el-dropdown-menu { border-color: var(--border-subtle); background: var(--surface); box-shadow: var(--shadow-md); border-radius: var(--radius-sm); }
.el-dialog__header { margin: 0; padding: 20px 24px 10px; }
.el-dialog__title { color: var(--text-primary); font-size: 18px; font-weight: 700; letter-spacing: -.03em; }
.el-dialog__body { padding: 12px 24px 6px; }
.el-dialog__footer { padding: 12px 24px 20px; }
.el-empty__description, .el-empty__description p, .el-result__subtitle { color: var(--text-secondary); }

/* misc */
.el-badge__content.is-fixed.is-dot { top: 10px; right: 10px; }
.el-card { --el-card-border-color: transparent; --el-card-bg-color: transparent; background: transparent; }
.el-tabs--border-card { border-color: var(--border-subtle); background: var(--surface); border-radius: var(--radius-sm); }
.el-tabs--border-card > .el-tabs__content { background: transparent; color: var(--text-primary); }
.el-tabs--border-card > .el-tabs__header { background: transparent; }
.el-tabs--border-card > .el-tabs__header .el-tabs__item { color: var(--text-secondary); }
.el-tabs--border-card > .el-tabs__header .el-tabs__item.is-active { color: var(--text-primary); background: var(--surface); }

/* ============================ Skeleton loading ============================ */
@keyframes shimmer { 0% { background-position: -400px 0; } 100% { background-position: 400px 0; } }
.skel {
  background: linear-gradient(90deg, var(--border-subtle) 25%, var(--surface-muted) 37%, var(--border-subtle) 63%);
  background-size: 800px 100%; animation: shimmer 1.6s ease-in-out infinite; border-radius: var(--radius-xs);
}
.skel--text { height: 14px; width: 100%; }
.skel--text.short { width: 60%; }
.skel--title { height: 18px; width: 50%; }

/* ============================ Motion ============================ */
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition-duration: 0.01ms !important; } }

/* ============================ Responsive ============================ */
@media (max-width: 1280px) { .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .highlight-grid { grid-template-columns: 1fr; } }
@media (max-width: 1100px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) {
  .page-header, .section-header, .toolbar-row { flex-direction: column; }
  .page-title { font-size: 22px; }
  .page-subtitle { display: none; }
  .surface-card .el-card__body { padding: 14px; }
  .stats-grid, .data-card__grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .stat-card { padding: 14px; gap: 8px; }
  .stat-card__value { font-size: 24px; }
  .desktop-only { display: none !important; }
  .mobile-only { display: block !important; }
  .el-dialog { width: min(100vw - 16px, 560px) !important; margin: 3vh auto 0 !important; }
  .el-dialog__header { padding: 16px 16px 8px; }
  .el-dialog__body { padding: 10px 16px 4px; }
  .el-dialog__footer { padding: 10px 16px 16px; }
  .el-table th.el-table__cell { padding: 10px 12px; font-size: 11px; }
  .el-table td.el-table__cell { padding: 10px 12px; font-size: 12.5px; line-height: 1.45; }
}
@media (max-width: 400px) { .stats-grid { grid-template-columns: 1fr; } }