:root {
    --bg: oklch(13% 0.018 245);
    --surface: oklch(18% 0.018 245);
    --surface-2: oklch(22% 0.018 245);
    --fg: oklch(94% 0.01 240);
    --muted: oklch(68% 0.018 240);
    --subtle: oklch(52% 0.018 240);
    --border: rgba(255,255,255,.1);
    --border-strong: rgba(255,255,255,.16);
    --accent: oklch(78% 0.12 170);
    --accent-hover: oklch(72% 0.12 170);
    --accent-2: oklch(72% 0.12 220);
    --warn: oklch(78% 0.13 75);
    --danger: oklch(70% 0.16 28);
    --success: oklch(76% 0.14 150);
    --font: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', ui-monospace, Menlo, monospace;
    --radius-sm: 10px;
    --radius: 16px;
    --radius-lg: 26px;
    --shadow: 0 24px 70px rgba(0,0,0,.38);
  }

  html.light {
    --bg: oklch(97% 0.006 100);
    --surface: #ffffff;
    --surface-2: oklch(94% 0.01 100);
    --fg: oklch(14% 0.012 245);
    --muted: oklch(46% 0.022 245);
    --subtle: oklch(62% 0.018 245);
    --border: rgba(0,0,0,.08);
    --border-strong: rgba(0,0,0,.12);
    --accent: oklch(50% 0.18 170);
    --accent-hover: oklch(43% 0.18 170);
    --accent-2: oklch(52% 0.15 220);
    --success: oklch(50% 0.16 150);
    --warn: oklch(62% 0.18 75);
    --danger: oklch(52% 0.18 28);
    --shadow: 0 16px 48px rgba(0,0,0,.1);
  }
  html.light input:focus,
  html.light select:focus,
  html.light textarea:focus { box-shadow: 0 0 0 2px oklch(50% 0.18 170 / 20%); }
  html.light select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%23808590' stroke-width='2'%3E%3Cpath d='m2 4 4 4 4-4'/%3E%3C/svg%3E"); }
  html.light .sidebar { background: rgba(255,255,255,.82); }
  html.light .page-header { background: rgba(255,255,255,.82); }
  html.light .tpl-layout { box-shadow: 0 8px 32px rgba(0,0,0,.06); }
  html.light .panel { box-shadow: 0 8px 32px rgba(0,0,0,.06); }
  html.light .btn-primary,
  html.light .btn.primary { background: linear-gradient(135deg, var(--accent), oklch(60% 0.16 170)); color: #fff; box-shadow: 0 8px 24px oklch(50% 0.18 170 / 28%); }
  html.light body { background: oklch(97% 0.006 100); }

  *, *::before, *::after { box-sizing: border-box; margin: 0; }
  html { min-height: 100%; background: var(--bg); font-size: 15px; -webkit-font-smoothing: antialiased; }
  body { font-family: var(--font); color: var(--fg); background: radial-gradient(circle at 18% 8%, oklch(78% 0.12 170 / 16%), transparent 34%), radial-gradient(circle at 76% 12%, oklch(72% 0.12 220 / 13%), transparent 28%), var(--bg); min-height: 100vh; line-height: 1.5; text-rendering: geometricPrecision; }
  button, input, select, textarea { font: inherit; color: inherit; }
  button { cursor: pointer; background: none; border: none; }
  input, select, textarea { background: rgba(255,255,255,.055); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 12px; outline: none; font-size: 14px; }
  input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 2px oklch(78% 0.12 170 / 22%); }
  textarea { resize: vertical; min-height: 80px; line-height: 1.55; }
  select { padding-right: 28px; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%23888899' stroke-width='2'%3E%3Cpath d='m2 4 4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; }
  option { background: var(--surface); color: var(--fg); }
  ::placeholder { color: var(--subtle); }

  /* layout */
  .shell { display: grid; grid-template-columns: 248px minmax(0,1fr); min-height: 100vh; }
  .sidebar { position: sticky; top: 0; height: 100vh; background: rgba(10,14,17,.76); backdrop-filter: blur(24px); border-right: 1px solid var(--border); display: flex; flex-direction: column; padding: 26px 16px; gap: 20px; }
  .side-brand { display: flex; align-items: center; gap: 12px; padding: 4px 8px 18px; border-bottom: 1px solid var(--border); }
  .side-logo { width: 40px; height: 40px; border-radius: 13px; background: linear-gradient(135deg, oklch(78% 0.12 170 / 95%), oklch(72% 0.12 220 / 70%)); box-shadow: inset 0 1px 0 rgba(255,255,255,.45), 0 14px 32px rgba(0,0,0,.32); flex-shrink: 0; }
  .side-name { font-weight: 650; font-size: 16px; letter-spacing: -.02em; }
  .side-sub { font-size: 11px; color: var(--muted); margin-top: 2px; }
  .side-nav { display: grid; gap: 5px; }
  .side-nav-label { font-size: 11px; font-weight: 650; color: var(--subtle); letter-spacing: .08em; text-transform: uppercase; padding: 0 10px 4px; }
  .side-nav-item { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 13px; border: 1px solid transparent; color: var(--muted); font-size: 14px; font-weight: 510; transition: .18s; text-align: left; }
  .side-nav-item:hover { color: var(--fg); border-color: var(--border-strong); background: rgba(255,255,255,.07); }
  .side-nav-item.active { color: var(--fg); background: rgba(255,255,255,.07); border-color: var(--border-strong); }
  .side-nav-item svg { width: 18px; height: 18px; stroke-width: 1.8; flex-shrink: 0; }
  .side-nav-item.active svg { color: var(--accent); }
  .side-footer { margin-top: auto; padding: 14px; border-radius: var(--radius); border: 1px solid var(--border); background: rgba(255,255,255,.045); font-size: 12px; color: var(--muted); }
  .side-footer-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 13px; }
  .side-footer-row > span:first-child { font-weight: 620; }

  /* theme toggle */
  .theme-toggle { display: flex; align-items: center; justify-content: center; width: 30px; height: 30px; border-radius: 10px; color: var(--muted); cursor: pointer; transition: .15s; flex-shrink: 0; margin-left: auto; }
  .theme-toggle:hover { color: var(--fg); background: rgba(255,255,255,.08); }
  .theme-toggle .icon-sun, .theme-toggle .icon-moon { display: flex; align-items: center; }
  html.light .theme-toggle .icon-moon,
  .theme-toggle .icon-sun { display: none; }
  html.light .theme-toggle .icon-sun,
  .theme-toggle .icon-moon { display: flex; }

  /* main */
  .main { --main-gutter: clamp(20px,3vw,42px); padding: 24px var(--main-gutter) 42px; min-width: 0; }
  .page-header { position: sticky; top: 0; z-index: 60; height: 91.5px; margin: -24px calc(var(--main-gutter) * -1) 24px; padding: 17px var(--main-gutter) 14px; border-bottom: 1px solid var(--border); background: rgba(10,14,17,.76); backdrop-filter: blur(24px); }
  .breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 6px; }
  .breadcrumb strong { color: var(--fg); font-weight: 600; }
  .page-h1 { font-size: 22px; font-weight: 650; line-height: 1.2; letter-spacing: -.02em; }

  /* toolbar */
  .tb { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
  .tb-left { display: flex; align-items: center; gap: 10px; }
  .tb-search { width: min(300px,34vw); min-width: 200px; height: 38px; border-radius: 999px; padding: 0 15px; font-size: 13px; background: rgba(255,255,255,.065); }
  .tb-search::placeholder { color: var(--subtle); }

  /* buttons — pill shape */
  .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 38px; padding: 0 16px; border-radius: 999px; font-size: 13px; font-weight: 600; letter-spacing: .01em; border: 1px solid var(--border); background: rgba(255,255,255,.065); color: var(--fg); transition: .15s; white-space: nowrap; }
  .btn:hover { background: rgba(255,255,255,.1); border-color: var(--border-strong); }
  .btn.primary, .btn-primary { background: linear-gradient(135deg, color-mix(in oklch, var(--accent) 76%, black), var(--accent)); color: oklch(13% 0.018 245); border-color: color-mix(in oklch, var(--accent) 70%, white); font-weight: 650; box-shadow: 0 14px 32px oklch(78% 0.12 170 / 18%); }
  .btn.primary:hover, .btn-primary:hover { background: linear-gradient(135deg, color-mix(in oklch, var(--accent) 66%, black), var(--accent-hover)); }
  .btn.ghost { background: transparent; border-color: transparent; color: var(--muted); }
  .btn.ghost:hover { color: var(--fg); background: rgba(255,255,255,.06); }
  .btn.sm, .btn-sm { min-height: 30px; padding: 0 12px; font-size: 12px; border-radius: 999px; }

  /* pills */
  .pill { display: inline-flex; align-items: center; justify-content: center; min-height: 26px; border-radius: 999px; padding: 4px 10px; font-size: 12px; font-weight: 650; border: 1px solid var(--border); color: var(--muted); background: rgba(255,255,255,.045); white-space: nowrap; }
  .pill.green, .pill-green { color: var(--success); background: color-mix(in oklch, var(--success) 14%, transparent); border-color: color-mix(in oklch, var(--success) 22%, transparent); }
  .pill.blue, .pill-blue { color: var(--accent-2); background: color-mix(in oklch, var(--accent-2) 14%, transparent); border-color: color-mix(in oklch, var(--accent-2) 22%, transparent); }
  .pill.warn, .pill-warn { color: var(--warn); background: color-mix(in oklch, var(--warn) 14%, transparent); border-color: color-mix(in oklch, var(--warn) 24%, transparent); }
  .pill.red, .pill-danger { color: var(--danger); background: color-mix(in oklch, var(--danger) 14%, transparent); border-color: color-mix(in oklch, var(--danger) 24%, transparent); }
  .pill.accent, .pill-accent { color: var(--accent); background: color-mix(in oklch, var(--accent) 14%, transparent); border-color: color-mix(in oklch, var(--accent) 24%, transparent); }



      .login-overlay { position: fixed; inset: 0; z-index: 5000; display: none; place-items: center; padding: 24px; background: rgba(5,8,10,.72); backdrop-filter: blur(22px); }
      .login-overlay.open { display: grid; }
      .login-card { width: min(420px,100%); border: 1px solid var(--border); border-radius: var(--radius-lg); background: linear-gradient(180deg, rgba(255,255,255,.09), rgba(255,255,255,.045)), var(--surface); box-shadow: var(--shadow); padding: 28px; }
      .login-card h2 { font-size: 20px; margin: 0 0 8px; letter-spacing: -.02em; }
      .login-card p { color: var(--muted); font-size: 13px; margin: 0 0 22px; }
      .login-error { display: none; margin-top: 12px; color: var(--danger); font-size: 13px; }
      .login-error.show { display: block; }
      .admin-user-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 10px; color: var(--muted); font-size: 12px; }