:root {
  --color-bg: #f8f9fa;
  --color-surface: #ffffff;
  --color-border: #e0e3e8;
  --color-text: #1a1d23;
  --color-text-secondary: #5f6775;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-error: #dc2626;
  --color-success: #16a34a;
  --color-warning: #ca8a04;
  --sidebar-w: 240px;
  --radius: 6px;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="dark"] {
  --color-bg: #0f1117;
  --color-surface: #1a1d27;
  --color-border: #2a2d38;
  --color-text: #e2e4e9;
  --color-text-secondary: #8b8fa0;
  --color-accent: #3b82f6;
  --color-accent-hover: #60a5fa;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-stack);
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.nav-icon, .brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-icon svg, .brand-icon svg, .mobile-nav-item svg {
  display: block;
}

.icon-placeholder {
  display: inline-block;
  width: 18px;
  height: 18px;
}

.nav-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Layout */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-w);
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
}

.sidebar-brand {
  padding: 16px;
  font-weight: 700;
  font-size: 18px;
  border-bottom: 1px solid var(--color-border);
  display: flex; align-items: center; gap: 8px;
}

.sidebar-nav {
  flex: 1;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 13px;
  min-height: 44px;
}

.nav-item:hover {
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
  color: var(--color-text);
}
.nav-item.active {
  background: var(--color-accent);
  color: #fff;
}
.nav-item.active:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.sidebar-footer { padding: 8px; border-top: 1px solid var(--color-border); }

.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  padding: 24px 32px;
  max-width: 1200px;
  min-height: 100vh;
  padding-bottom: 60px;
}

.status-bar {
  position: fixed;
  bottom: 0; left: var(--sidebar-w); right: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 4px 16px;
  font-size: 11px;
  color: var(--color-text-secondary);
  display: flex; gap: 16px; z-index: 50;
}

/* Cards */
.card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 16px; margin-bottom: 8px; }
.card-sm { padding: 10px 14px; }
.card h3 { font-size: 14px; margin-bottom: 8px; }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px;
  display: flex; flex-direction: column; align-items: center;
}
.stat-value { font-size: 24px; font-weight: 700; }
.stat-label { font-size: 12px; color: var(--color-text-secondary); }

/* KV list */
.kv-list { font-size: 13px; }
.kv-list > div { display: flex; justify-content: space-between; padding: 4px 0; border-bottom: 1px solid var(--color-border); }
.kv-list > div:last-child { border-bottom: none; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: var(--radius); border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text); cursor: pointer; font-size: 13px; text-decoration: none; min-height: 44px; }
.btn-primary { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
.btn-sm { padding: 4px 10px; font-size: 12px; min-height: 32px; }
.btn-full { width: 100%; justify-content: center; }

/* Forms */
input, select, textarea {
  padding: 8px 10px; border: 1px solid var(--color-border); border-radius: var(--radius);
  font-size: 13px; font-family: var(--font-stack); background: var(--color-bg);
  color: var(--color-text); max-width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--color-accent); outline-offset: -1px; }

.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; align-items: center; }
.filter-bar input, .filter-bar select { width: auto; }

/* People grid */
.people-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 8px; }
.person-card {
  display: flex; align-items: center; gap: 12px;
  padding: 12px; border: 1px solid var(--color-border); border-radius: var(--radius);
  background: var(--color-surface); text-decoration: none; color: var(--color-text);
  min-height: 56px;
}
.person-card:hover { border-color: var(--color-accent); }
.person-avatar {
  width: 40px; height: 40px; border-radius: 50%; background: var(--color-accent);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 600; flex-shrink: 0;
}
.person-info { display: flex; flex-direction: column; font-size: 12px; gap: 2px; }
.person-info strong { font-size: 14px; }
.person-stats { color: var(--color-text-secondary); font-size: 11px; }

/* Links & badges */
a.chat-link, .chat-link {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
}
a.chat-link:hover, .chat-link:hover {
  color: var(--color-accent);
  text-decoration: none;
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  white-space: nowrap;
}
.badge-live { color: #166534; border-color: #86efac; background: #f0fdf4; }
.badge-import { color: #1e40af; border-color: #93c5fd; background: #eff6ff; }
.badge-muted { color: var(--color-text-secondary); }

.threads { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.thread-badge {
  display: inline-flex;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
}

/* Messages */
.msg-list { display: flex; flex-direction: column; gap: 4px; }
.msg-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 10px 14px; cursor: pointer; font-size: 13px;
  max-width: 100%; overflow: hidden;
}
.msg-card:hover { border-color: var(--color-accent); }
.msg-meta { display: flex; gap: 8px; flex-wrap: wrap; font-size: 11px; color: var(--color-text-secondary); align-items: center; }
.msg-author { color: var(--color-accent); font-weight: 600; }
.msg-preview, .msg-full {
  margin-top: 4px;
  overflow-wrap: anywhere;
  word-break: break-word;
  max-width: 100%;
}
.msg-full { display: none; white-space: pre-wrap; }
.msg-expanded .msg-full { display: block; }
.msg-expanded .msg-preview { display: none; }

/* Tabs */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--color-border); margin-bottom: 12px; }
.tab { padding: 8px 16px; font-size: 13px; color: var(--color-text-secondary); text-decoration: none; border-bottom: 2px solid transparent; min-height: 44px; display: inline-flex; align-items: center; }
.tab:hover, .tab.active { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.tab.disabled { opacity: .45; pointer-events: none; }

/* Empty / placeholder */
.empty-state { padding: 40px 20px; text-align: center; color: var(--color-text-secondary); }
.placeholder-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
.placeholder-card { padding: 16px; border: 1px dashed var(--color-border); border-radius: var(--radius); font-size: 13px; color: var(--color-text-secondary); text-align: center; }
.placeholder-card small { font-size: 11px; display: block; margin-top: 4px; }

/* Login */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--color-bg); }
.login-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 32px; width: 360px; max-width: 90vw; }
.login-card h1 { text-align: center; font-size: 22px; margin-bottom: 4px; }
.login-subtitle { text-align: center; color: var(--color-text-secondary); font-size: 14px; margin-bottom: 20px; }
.login-form { display: flex; flex-direction: column; gap: 8px; }
.login-form label { font-size: 13px; font-weight: 500; }
.login-form input { margin-bottom: 4px; }
.login-form button { margin-top: 8px; }

/* Alert */
.alert { padding: 8px 12px; border-radius: var(--radius); font-size: 13px; margin-bottom: 12px; }
.alert-error { background: #fef2f2; color: var(--color-error); }

/* Error pages */
.error-page { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 60px 20px; }
.error-page h1 { font-size: 48px; color: var(--color-text-secondary); }
.error-page p { margin: 8px 0; }

/* Pagination */
.pagination { display: flex; gap: 8px; align-items: center; justify-content: center; padding: 12px 0; font-size: 13px; }

/* Misc */
.mt-1 { margin-top: 12px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; } .mb-2 { margin-bottom: 8px; }
.text-green { color: var(--color-success); } .text-red { color: var(--color-error); }
.text-small { font-size: 12px; color: var(--color-text-secondary); }
.threads { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.thread-badge { font-size: 11px; padding: 2px 8px; background: var(--color-bg); border: 1px solid var(--color-border); border-radius: 10px; }

/* Mobile nav */
.mobile-nav { display: none; }

@media (max-width: 768px) {
  .sidebar { display: none; }
  .main-content { margin-left: 0; padding: 16px; }
  .status-bar { left: 0; }
  .mobile-nav {
    display: flex;
    position: fixed; bottom: 0; left: 0; right: 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    z-index: 200;
    justify-content: space-around;
    padding: 6px 0;
  }
  .mobile-nav-item {
    display: flex; flex-direction: column; align-items: center;
    font-size: 10px; color: var(--color-text-secondary); text-decoration: none;
    gap: 2px; min-height: 44px; justify-content: center;
  }
  .mobile-nav-item svg { width: 20px; height: 20px; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .people-grid { grid-template-columns: 1fr; }
}