/* ═══════════════════════════════════════════════════════
   BDFZ User Center — Design System
   User-customizable: --hue sets the entire palette.
   ═══════════════════════════════════════════════════════ */

:root {
  color-scheme: light;
  /* User-customizable hue (0-360). Everything derives from this. */
  --hue: 12;
  --sat: 58%;

  /* Auto-derived palette */
  --primary: hsl(var(--hue), var(--sat), 42%);
  --primary-fg: #fff;
  --primary-dim: hsl(var(--hue), calc(var(--sat) * 0.6), 68%);
  --primary-ghost: hsl(var(--hue), calc(var(--sat) * 0.4), 94%);

  --bg: hsl(var(--hue), 12%, 95%);
  --surface: hsl(var(--hue), 14%, 99%);
  --surface-raised: hsl(var(--hue), 10%, 97%);
  --border: hsl(var(--hue), 8%, 88%);
  --border-strong: hsl(var(--hue), 8%, 78%);

  --text: hsl(var(--hue), 18%, 14%);
  --text-2: hsl(var(--hue), 10%, 38%);
  --text-3: hsl(var(--hue), 6%, 56%);

  --shadow-sm: 0 1px 2px hsl(var(--hue), 10%, 70%, 0.12);
  --shadow: 0 4px 16px hsl(var(--hue), 10%, 40%, 0.1);
  --shadow-lg: 0 12px 40px hsl(var(--hue), 10%, 30%, 0.14);

  --r: 14px;
  --r-sm: 10px;
  --r-xs: 6px;
  --r-full: 999px;

  --max-w: 1100px;
  --font: 'Manrope', 'PingFang SC', 'Noto Sans SC', system-ui, sans-serif;
  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: hsl(var(--hue), 8%, 8%);
  --surface: hsl(var(--hue), 8%, 12%);
  --surface-raised: hsl(var(--hue), 8%, 15%);
  --border: hsl(var(--hue), 6%, 20%);
  --border-strong: hsl(var(--hue), 6%, 30%);
  --text: hsl(var(--hue), 10%, 90%);
  --text-2: hsl(var(--hue), 6%, 64%);
  --text-3: hsl(var(--hue), 4%, 48%);
  --primary-ghost: hsl(var(--hue), calc(var(--sat) * 0.3), 16%);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
  --shadow: 0 4px 16px rgba(0,0,0,0.25);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.35);
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; min-height: 100vh; }
body { background: var(--bg); color: var(--text); font: 400 15px/1.55 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, textarea, select { font: inherit; color: inherit; }
button { border: 0; cursor: pointer; background: none; }
img { max-width: 100%; display: block; }

/* ─── Layout Shell ─── */
.shell { min-height: 100vh; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 0 24px; height: 54px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; font-weight: 700; font-size: 15px; letter-spacing: -0.01em; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center;
  background: var(--primary); color: var(--primary-fg); font-size: 12px; font-weight: 800;
}
.topbar-actions { display: flex; align-items: center; gap: 6px; }
.main { flex: 1; width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 24px 20px 48px; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 16px; border-radius: var(--r-sm); font-size: 13px; font-weight: 600;
  transition: all 0.15s;
}
.btn-p { background: var(--primary); color: var(--primary-fg); }
.btn-p:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-s { background: var(--surface-raised); border: 1px solid var(--border); color: var(--text-2); }
.btn-s:hover { border-color: var(--border-strong); background: var(--surface); }
.btn-g { color: var(--text-3); padding: 6px 10px; }
.btn-g:hover { color: var(--text); background: var(--primary-ghost); }
.btn-d { color: hsl(0, 55%, 50%); }
.btn-d:hover { background: hsl(0, 60%, 96%); }
html[data-theme="dark"] .btn-d:hover { background: hsl(0, 30%, 18%); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-icon { padding: 6px; border-radius: var(--r-xs); }

/* ─── Form ─── */
.field { display: grid; gap: 5px; }
.field label { font-size: 12px; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.04em; }
input, textarea, select {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: var(--r-sm);
  background: var(--surface); transition: border-color 0.15s;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--primary); }
textarea { resize: vertical; min-height: 100px; }
.form-row { display: grid; gap: 12px; }
.form-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.error-text { color: hsl(0, 55%, 50%); font-size: 13px; min-height: 18px; }

/* ─── Cards ─── */
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r);
  overflow: hidden; transition: box-shadow 0.2s;
}
.card:hover { box-shadow: var(--shadow-sm); }
.card-h {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.card-h h3 { margin: 0; font-size: 14px; font-weight: 700; }
.card-h .sub { font-size: 12px; color: var(--text-3); }
.card-b { padding: 16px 18px; }
.card-b.flush { padding: 0; }

/* ─── Login Page ─── */
.login-page {
  min-height: calc(100vh - 54px);
  display: grid; place-items: center; padding: 24px;
}
.login-box {
  width: 100%; max-width: 380px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r);
  padding: 32px; box-shadow: var(--shadow-lg);
}
.login-box h1 { margin: 0 0 4px; font-size: 22px; letter-spacing: -0.02em; }
.login-box .sub { color: var(--text-3); font-size: 13px; margin-bottom: 20px; }
.login-box .form-row { gap: 14px; }
.login-box .btn-p { width: 100%; justify-content: center; height: 42px; font-size: 14px; }
.login-footer { text-align: center; margin-top: 16px; font-size: 12px; color: var(--text-3); }
.login-footer a { color: var(--primary); }

/* ─── Dashboard ─── */
.dash { display: grid; gap: 20px; }

/* Profile strip */
.profile-strip {
  display: flex; align-items: center; gap: 16px; padding: 20px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r);
  position: relative; overflow: hidden;
}
.profile-strip .cover-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.08; }
.profile-strip > * { position: relative; z-index: 1; }
.avatar {
  width: 52px; height: 52px; border-radius: 50%; flex-shrink: 0;
  display: grid; place-items: center; font-weight: 800; font-size: 20px;
  background: var(--primary-ghost); color: var(--primary); border: 2px solid var(--primary-dim);
}
.avatar img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
.profile-info h2 { margin: 0; font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }
.profile-info p { margin: 2px 0 0; font-size: 13px; color: var(--text-2); }
.profile-actions { margin-left: auto; display: flex; gap: 6px; }

/* Stat grid */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; }
.stat {
  padding: 16px; text-align: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-sm);
}
.stat-val { font-size: 26px; font-weight: 800; color: var(--primary); letter-spacing: -0.02em; }
.stat-lbl { font-size: 11px; color: var(--text-3); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.06em; }

/* Tabs */
.tabs {
  display: flex; gap: 2px; border-bottom: 1px solid var(--border);
  overflow-x: auto; overflow-y: hidden; white-space: nowrap;
  scrollbar-width: none; -webkit-overflow-scrolling: touch;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  padding: 10px 16px; font-size: 13px; font-weight: 600; color: var(--text-3);
  border-bottom: 2px solid transparent; transition: all 0.15s; background: none;
  flex: 0 0 auto;
}
.tab:hover { color: var(--text); }
.tab.on { color: var(--primary); border-bottom-color: var(--primary); }
.tab-panel { display: none; }
.tab-panel.on { display: block; }

/* Two-column layout */
.cols { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 16px; }
@media (max-width: 860px) { .cols { grid-template-columns: 1fr; } }
.col-stack { display: grid; gap: 16px; align-content: start; }

/* Widget grid */
.w-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.w-grid .card.w2 { grid-column: span 2; }
@media (max-width: 640px) { .w-grid { grid-template-columns: 1fr; } .w-grid .card.w2 { grid-column: span 1; } }

/* List items */
.list { display: grid; gap: 1px; background: var(--border); }
.list-item {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 12px 18px; background: var(--surface); transition: background 0.1s;
}
.list-item:hover { background: var(--surface-raised); }
.list-item:first-child { border-radius: 0; }
.list-item-info { min-width: 0; flex: 1 1 220px; }
.list-item-title { font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin: 0; }
.list-item-sub { font-size: 12px; color: var(--text-3); margin: 2px 0 0; }
.list-item-right { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.wrap { flex-wrap: wrap; }

/* Chips & badges */
.chip {
  display: inline-flex; align-items: center; height: 22px; padding: 0 8px;
  border-radius: var(--r-full); font-size: 11px; font-weight: 600;
  background: var(--primary-ghost); color: var(--primary);
}
.chip-muted { background: var(--surface-raised); color: var(--text-3); border: 1px solid var(--border); }

/* Progress bar */
.pbar { height: 6px; border-radius: 3px; background: var(--border); overflow: hidden; }
.pbar-fill { height: 100%; border-radius: 3px; background: var(--primary); transition: width 0.5s ease; }

/* Progress item */
.prog-item { padding: 14px 18px; }
.prog-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.prog-head h4 { margin: 0; font-size: 14px; font-weight: 600; }
.prog-sub { font-size: 12px; color: var(--text-3); margin-top: 5px; }

/* Data hub */
.data-summary-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.data-mini {
  padding: 14px; border: 1px solid var(--border); border-radius: var(--r-sm);
  background: var(--surface-raised);
}
.data-mini-val { font-size: 22px; font-weight: 800; color: var(--primary); }
.data-mini-lbl { font-size: 11px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.05em; }
.record-viewer { display: grid; gap: 12px; }
.record-meta { display: flex; flex-wrap: wrap; gap: 6px; }
.record-messages { display: grid; gap: 10px; }
.record-message {
  display: grid; gap: 6px; padding: 12px 14px;
  border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface-raised);
}
.record-message.user { border-color: color-mix(in srgb, var(--primary) 28%, var(--border)); }
.record-message.assistant { background: color-mix(in srgb, var(--primary-ghost) 62%, var(--surface)); }
.record-message.system,
.record-message.tool { background: color-mix(in srgb, var(--surface-raised) 72%, var(--bg)); }
.record-role { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-3); }
.record-content {
  margin: 0; white-space: pre-wrap; word-break: break-word;
  font: 500 13px/1.65 var(--font-mono); color: var(--text);
}
.record-empty { color: var(--text-3); font-size: 13px; }

/* AI Report */
.report-body h4 { font-size: 13px; font-weight: 700; margin: 14px 0 4px; color: var(--primary); }
.report-body h4:first-child { margin-top: 0; }
.report-body p { font-size: 13px; color: var(--text-2); line-height: 1.65; }
.report-body ul { padding-left: 16px; margin: 4px 0 0; }
.report-body li { font-size: 13px; color: var(--text-2); margin-bottom: 3px; }

/* Embed */
.embed-frame { border: none; border-radius: var(--r-sm); display: block; }

/* Empty state */
.empty { padding: 24px; text-align: center; color: var(--text-3); font-size: 13px; }

/* Site cards (site map tab) */
.site-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 640px) { .site-grid { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .data-summary-grid { grid-template-columns: 1fr 1fr; } }
.site-card {
  padding: 14px 16px; border-radius: var(--r-sm);
  border: 1px solid var(--border); background: var(--surface);
  display: grid; gap: 8px;
}
.site-card h4 { margin: 0; font-size: 13px; font-weight: 700; }
.site-card-meta { display: flex; gap: 4px; flex-wrap: wrap; }

/* Settings */
.settings-section { margin-bottom: 28px; }
.settings-section h3 { font-size: 14px; font-weight: 700; margin: 0 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }

/* Toast */
.toast {
  position: fixed; right: 16px; bottom: 16px; z-index: 100;
  padding: 10px 16px; border-radius: var(--r-sm);
  background: var(--text); color: var(--bg); font-size: 13px; font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0; transform: translateY(12px); pointer-events: none;
  transition: all 0.2s ease;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* Profile page specific */
.profile-hero {
  text-align: center; padding: 40px 24px; position: relative; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r);
}
.profile-hero .cover { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.12; }
.profile-hero > * { position: relative; z-index: 1; }
.profile-hero h1 { font-size: 28px; font-weight: 800; margin: 12px 0 4px; letter-spacing: -0.02em; }
.profile-hero h1 span { display: block; font-family: var(--font-serif); font-size: 16px; font-weight: 500; color: var(--text-2); margin-top: 4px; }
.profile-hero .bio { color: var(--text-2); font-size: 14px; max-width: 480px; margin: 8px auto 0; }
.profile-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .profile-grid { grid-template-columns: 1fr; } }

/* Color picker mini */
.color-picker-row { display: flex; align-items: center; gap: 10px; }
.color-picker-row input[type="color"] { width: 36px; height: 36px; border: 1px solid var(--border); border-radius: var(--r-xs); padding: 2px; cursor: pointer; }
.color-picker-row input[type="range"] { flex: 1; accent-color: var(--primary); }

/* Utility */
.hidden { display: none !important; }
.mono { font-family: var(--font-mono); font-size: 12px; }
.muted { color: var(--text-3); }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.gap-2 { gap: 8px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }

/* Responsive */
@media (max-width: 640px) {
  .topbar { padding: 0 14px; height: 48px; }
  .main { padding: 14px 12px 40px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .form-cols { grid-template-columns: 1fr; }
  .profile-strip { flex-direction: column; text-align: center; }
  .topbar-actions { gap: 4px; }
  .tab { padding: 10px 12px; }
  .profile-actions { margin-left: 0; justify-content: center; flex-wrap: wrap; width: 100%; }
  .list-item { align-items: flex-start; flex-wrap: wrap; }
  .list-item-right { width: 100%; justify-content: flex-end; }
  .site-card { padding: 12px 14px; }
  .record-content { font-size: 12px; }
}