:root {
  --sidebar-bg: #14171c;
  --sidebar-ink: #cdd2da;
  --sidebar-ink-dim: #7d8592;
  --sidebar-active: #262b33;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-sunken: #f0f1f4;
  --border: #e3e5e9;
  --ink: #1a1d23;
  --ink-dim: #656d7a;
  --accent: #3a5ce5;
  --accent-ink: #ffffff;
  --accent-soft: #eaeeff;
  --danger: #d13d3d;
  --danger-soft: #fce9e9;
  --success: #157a5e;
  --success-soft: #e6f5f0;
  --warn: #a9700a;
  --warn-soft: #fbf0dd;
  --focus: #3a5ce5;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --radius: 8px;
  --radius-sm: 5px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --sidebar-bg: #0c0e12;
    --sidebar-ink: #c7cdd6;
    --sidebar-ink-dim: #767e8a;
    --sidebar-active: #1c2028;
    --bg: #16181d;
    --surface: #1e2128;
    --surface-sunken: #191c22;
    --border: #2c3038;
    --ink: #edeff2;
    --ink-dim: #98a0ac;
    --accent: #6b87ff;
    --accent-ink: #0b1030;
    --accent-soft: #232a4d;
    --danger: #ff6b6b;
    --danger-soft: #3a2020;
    --success: #3fcf9e;
    --success-soft: #163229;
    --warn: #f0b429;
    --warn-soft: #3a2d0f;
    --focus: #6b87ff;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 14px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
::selection { background: var(--accent); color: var(--accent-ink); }
button, input, select, textarea { font-family: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, a:focus-visible {
  outline: 2px solid var(--focus); outline-offset: 1px;
}

/* ---- App shell: sidebar + full-bleed content ---- */
.app { display: flex; min-height: 100vh; }

.sidebar {
  width: 232px; flex: 0 0 232px; background: var(--sidebar-bg); color: var(--sidebar-ink);
  display: flex; flex-direction: column; padding: 18px 12px; position: sticky; top: 0; height: 100vh;
}
.sidebar .brand {
  font-weight: 700; font-size: 14.5px; color: #fff; padding: 6px 10px 18px; letter-spacing: -0.01em;
}
.sidebar .brand small { display: block; font-weight: 400; font-size: 11px; color: var(--sidebar-ink-dim); margin-top: 2px; letter-spacing: 0; }
.sidebar nav { display: flex; flex-direction: column; gap: 2px; }
.sidebar nav a {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  text-decoration: none; color: var(--sidebar-ink); font-size: 13.5px; font-weight: 500;
  padding: 9px 10px; border-radius: var(--radius-sm);
}
.sidebar nav a:hover { background: var(--sidebar-active); }
.sidebar nav a.active { background: var(--accent); color: #fff; }
.sidebar nav a .count {
  font-family: var(--mono); font-size: 11px; color: var(--sidebar-ink-dim); background: rgba(255,255,255,0.06);
  padding: 1px 7px; border-radius: 999px;
}
.sidebar nav a.active .count { color: rgba(255,255,255,0.85); background: rgba(255,255,255,0.18); }
.sidebar .sidebar-spacer { flex: 1; }
.sidebar .sidebar-foot { padding: 10px; font-size: 11px; color: var(--sidebar-ink-dim); border-top: 1px solid rgba(255,255,255,0.08); margin-top: 10px; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.main-content { flex: 1; padding: 22px clamp(16px, 2.5vw, 40px) 60px; width: 100%; }

/* ---- Page header ---- */
.pagehead { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; flex-wrap: wrap; }
.pagehead h1 { font-size: 19px; font-weight: 700; margin: 0; letter-spacing: -0.01em; }
.pagehead .sub { color: var(--ink-dim); font-size: 13px; }
.pagehead .spacer { flex: 1; }

/* ---- Stats ---- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px,1fr)); gap: 12px; margin-bottom: 18px; }
.stat { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); padding: 14px 16px; }
.stat .label { font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-dim); font-weight: 600; margin-bottom: 6px; display: block; }
.stat .value { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 22px; font-weight: 700; }

/* ---- Panels ---- */
.panel { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); padding: 20px 22px; margin-bottom: 16px; }
.panel h2 { font-size: 14px; font-weight: 700; margin: 0 0 14px; letter-spacing: -0.01em; }

.label { font-size: 11.5px; font-weight: 600; color: var(--ink-dim); display: block; margin-bottom: 5px; }
input[type=text], input[type=tel], input[type=email], input[type=password], input[type=search], select, textarea {
  width: 100%; background: var(--surface-sunken); border: 1px solid var(--border); color: var(--ink);
  border-radius: var(--radius-sm); padding: 8px 11px; font-size: 13.5px;
}
input[type=color] { border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface-sunken); }
textarea { resize: vertical; font-family: var(--sans); }
textarea.code { font-family: var(--mono); font-size: 12.5px; line-height: 1.5; }
.field { margin-bottom: 14px; }
.row { display: flex; gap: 14px; flex-wrap: wrap; }
.row > .field { flex: 1; min-width: 180px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border);
  background: var(--surface); color: var(--ink); border-radius: var(--radius-sm);
  padding: 8px 15px; font-size: 13px; font-weight: 500; cursor: pointer; text-decoration: none;
}
.btn:hover { border-color: var(--ink-dim); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.btn.small { padding: 5px 11px; font-size: 12px; }
.btn[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); font-weight: 600; }

/* ---- Tags / dots ---- */
.tag { font-family: var(--mono); font-size: 10.5px; font-weight: 600; padding: 3px 8px; border-radius: 999px; white-space: nowrap; }
.tag.trade { background: var(--success-soft); color: var(--success); }
.tag.pro { background: var(--warn-soft); color: var(--warn); }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--danger); }

/* ---- Tables ---- */
.tablewrap { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); overflow-x: auto; max-height: 74vh; overflow-y: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
thead th {
  text-align: left; font-size: 11px; font-weight: 700; letter-spacing: 0.02em; text-transform: uppercase;
  color: var(--ink-dim); padding: 10px 12px; border-bottom: 1px solid var(--border); white-space: nowrap;
  position: sticky; top: 0; background: var(--surface);
}
tbody tr { border-bottom: 1px solid var(--border); }
tbody tr:hover { background: var(--surface-sunken); }
tbody tr.done { opacity: 0.5; }
tbody td { padding: 9px 12px; vertical-align: middle; }

/* ---- Tabs ---- */
.tabs { display: flex; gap: 2px; margin-bottom: 16px; border-bottom: 1px solid var(--border); }
.tabs a {
  font-size: 13px; font-weight: 500; text-decoration: none; color: var(--ink-dim);
  padding: 10px 16px; border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs a.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 700; }
.tabs a:hover:not(.active) { color: var(--ink); }

/* ---- Messages ---- */
.msg-log { display: flex; flex-direction: column; gap: 8px; max-height: 400px; overflow-y: auto; padding: 2px; }
.msg { padding: 10px 13px; border-radius: 10px; font-size: 13px; max-width: 78%; }
.msg.out { background: var(--accent-soft); color: var(--ink); align-self: flex-end; }
.msg.in, .msg.bot { background: var(--surface-sunken); align-self: flex-start; }
.msg .meta { font-size: 10.5px; color: var(--ink-dim); margin-top: 5px; font-family: var(--mono); }

.empty { color: var(--ink-dim); font-size: 13px; padding: 30px; text-align: center; }

.iframe-wrap { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: #fff; }
.iframe-wrap iframe { width: 100%; height: 640px; border: none; display: block; }

.flash { background: var(--success-soft); color: var(--success); padding: 10px 15px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 13px; font-weight: 500; }
.flash.error { background: var(--danger-soft); color: var(--danger); }

.hint { font-size: 12px; color: var(--ink-dim); margin: 5px 0 0; }
.notice { border: 1px solid var(--warn); background: var(--warn-soft); color: var(--warn); border-radius: var(--radius); padding: 12px 15px; margin-bottom: 16px; font-size: 13px; }
.notice a { text-decoration: underline; }

@media (max-width: 900px) {
  .app { flex-direction: column; }
  .sidebar { width: 100%; flex: none; height: auto; position: static; flex-direction: row; align-items: center; overflow-x: auto; }
  .sidebar .brand { padding: 6px 12px; }
  .sidebar nav { flex-direction: row; }
  .sidebar .sidebar-spacer, .sidebar .sidebar-foot { display: none; }
}