/* =========================================================
   BDS — Giỏ Hàng BĐS | Brand Tokens (Indigo/Blue B2B)
   Nguồn chân lý duy nhất cho màu, font, spacing.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  /* ===== Primary — Indigo B2B ===== */
  --primary-50: #EEF2FF;
  --primary-100: #E0E7FF;
  --primary-200: #C7D2FE;
  --primary-300: #A5B4FC;
  --primary-400: #818CF8;
  --primary-500: #6366F1;
  --primary-600: #4F46E5;      /* CTA chính */
  --primary-700: #4338CA;      /* hover */
  --primary-800: #3730A3;
  --primary-900: #312E81;      /* sidebar bg */

  /* ===== Neutrals ===== */
  --ink: #0F172A;              /* chữ chính */
  --ink-soft: #334155;         /* chữ phụ */
  --muted: #64748B;            /* meta, label */
  --border: #E2E8F0;
  --border-strong: #CBD5E1;
  --bg: #F8FAFC;               /* nền app */
  --surface: #FFFFFF;          /* card */
  --surface-alt: #F1F5F9;      /* hover row */

  /* ===== Semantic ===== */
  --success: #10B981;
  --success-bg: #D1FAE5;
  --warning: #F59E0B;
  --warning-bg: #FEF3C7;
  --danger: #EF4444;
  --danger-bg: #FEE2E2;
  --info: #3B82F6;
  --info-bg: #DBEAFE;

  /* Status badges BĐS */
  --status-draft: var(--muted);
  --status-pending: var(--warning);
  --status-approved: var(--success);
  --status-rejected: var(--danger);

  /* ===== Typography ===== */
  --font-sans: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --fs-xs: 11px;
  --fs-sm: 13px;
  --fs-base: 15px;
  --fs-md: 17px;
  --fs-lg: 20px;
  --fs-xl: 24px;
  --fs-2xl: 30px;
  --fs-3xl: 36px;
  --fs-hero: clamp(32px, 5vw, 48px);

  /* ===== Spacing ===== */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;

  /* ===== Radius ===== */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* ===== Shadow ===== */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 24px rgba(15, 23, 42, 0.1);
  --shadow-focus: 0 0 0 3px rgba(99, 102, 241, 0.18);

  /* ===== Layout ===== */
  --sidebar-w: 248px;
  --sidebar-w-collapsed: 72px;
  --header-h: 64px;
  --bottom-nav-h: 64px;

  /* ===== Transitions ===== */
  --tr-fast: 0.15s ease;
  --tr: 0.22s ease;
  --tr-slow: 0.35s ease;
}

/* ============================================================
   Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; letter-spacing: -0.015em; }
p { margin: 0; }
a { color: var(--primary-600); text-decoration: none; }
a:hover { color: var(--primary-700); }

/* Scrollbar subtle */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ============================================================
   Utility classes
   ============================================================ */
.mono { font-family: var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; font-size: var(--fs-xs); }
.container { max-width: 1320px; margin: 0 auto; padding: 0 var(--sp-6); }
.stack > * + * { margin-top: var(--sp-4); }
.row { display: flex; gap: var(--sp-3); align-items: center; }
.row.wrap { flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.grid { display: grid; gap: var(--sp-5); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--tr), color var(--tr), border-color var(--tr), box-shadow var(--tr);
  white-space: nowrap;
}
.btn:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.btn-primary { background: var(--primary-600); color: #fff; }
.btn-primary:hover { background: var(--primary-700); }
.btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--surface-alt); }
.btn-ghost { background: transparent; color: var(--ink-soft); }
.btn-ghost:hover { background: var(--surface-alt); color: var(--ink); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #DC2626; }
.btn-sm { padding: 6px 12px; font-size: var(--fs-xs); }
.btn-lg { padding: 14px 22px; font-size: var(--fs-base); }
.btn-block { width: 100%; justify-content: center; }

/* ============================================================
   Inputs
   ============================================================ */
.input, .select, .textarea {
  width: 100%;
  padding: 10px 14px;
  font-family: inherit;
  font-size: var(--fs-sm);
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  transition: border-color var(--tr), box-shadow var(--tr);
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: var(--shadow-focus);
}
.textarea { min-height: 96px; resize: vertical; }
.label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.label .req { color: var(--danger); margin-left: 2px; }
.hint { font-size: var(--fs-xs); color: var(--muted); margin-top: 4px; }

/* ============================================================
   Card
   ============================================================ */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  box-shadow: var(--shadow-xs);
}
.card-title { font-size: var(--fs-md); font-weight: 700; margin-bottom: var(--sp-1); }
.card-sub { color: var(--muted); font-size: var(--fs-sm); }

/* ============================================================
   Badge
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 600;
  background: var(--surface-alt);
  color: var(--ink-soft);
}
.badge-pending { background: var(--warning-bg); color: #92400E; }
.badge-approved { background: var(--success-bg); color: #065F46; }
.badge-rejected { background: var(--danger-bg); color: #991B1B; }
.badge-info { background: var(--info-bg); color: #1E40AF; }

/* ============================================================
   Table
   ============================================================ */
.table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.table thead th {
  text-align: left;
  padding: 12px 14px;
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
}
.table tbody td {
  padding: 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.table tbody tr:hover { background: var(--surface-alt); }
.table-actions { display: flex; gap: 6px; justify-content: flex-end; }

/* ============================================================
   App shell layout
   ============================================================ */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--header-h) 1fr;
  grid-template-areas:
    "sidebar header"
    "sidebar main";
  min-height: 100vh;
}
.app-sidebar { grid-area: sidebar; }
.app-header { grid-area: header; }
.app-main { grid-area: main; padding: var(--sp-6); overflow-x: hidden; }

/* Mobile */
@media (max-width: 991px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: var(--header-h) 1fr var(--bottom-nav-h);
    grid-template-areas:
      "header"
      "main"
      "bottomnav";
  }
  .app-sidebar { display: none; }
  .app-main { padding: var(--sp-4); padding-bottom: calc(var(--bottom-nav-h) + var(--sp-4)); }
}

/* ============================================================
   Header
   ============================================================ */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sp-6);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}
.header-brand { display: flex; align-items: center; gap: var(--sp-2); font-weight: 800; font-size: var(--fs-md); }
.header-brand .logo-dot { width: 28px; height: 28px; border-radius: 8px; background: var(--primary-600); display: grid; place-items: center; color: #fff; font-family: var(--font-mono); font-weight: 700; font-size: 14px; }
.header-search { flex: 1; max-width: 420px; margin: 0 var(--sp-6); display: none; }
@media (min-width: 992px) { .header-search { display: block; } }
.header-actions { display: flex; align-items: center; gap: var(--sp-3); }
.icon-btn {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  display: grid; place-items: center;
  cursor: pointer;
  color: var(--ink-soft);
  position: relative;
  transition: background var(--tr), border-color var(--tr);
}
.icon-btn:hover { background: var(--surface-alt); border-color: var(--border-strong); }
.icon-btn .dot-notif {
  position: absolute; top: 8px; right: 10px;
  width: 8px; height: 8px; background: var(--danger); border-radius: 50%;
  border: 2px solid var(--surface);
}
.avatar {
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  background: var(--primary-100);
  color: var(--primary-700);
  display: grid; place-items: center;
  font-weight: 700;
  font-size: var(--fs-sm);
  cursor: pointer;
}

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar {
  background: #fff;
  border-right: 1px solid var(--border);
  padding: var(--sp-5) var(--sp-3);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sidebar-brand { padding: 0 var(--sp-3) var(--sp-5); border-bottom: 1px solid var(--border); margin-bottom: var(--sp-3); display: flex; align-items: center; gap: var(--sp-2); }
.sidebar-brand .logo-dot { width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg, var(--primary-600), var(--primary-800)); display: grid; place-items: center; color: #fff; font-family: var(--font-mono); font-weight: 700; }
.sidebar-brand .brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.sidebar-brand .brand-text .t1 { font-weight: 800; font-size: var(--fs-md); }
.sidebar-brand .brand-text .t2 { font-size: 11px; color: var(--muted); }

.sidebar-section-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--sp-4) var(--sp-3) var(--sp-2);
}
.nav-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--ink-soft);
  font-size: var(--fs-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--tr), color var(--tr);
}
.nav-item:hover { background: var(--surface-alt); color: var(--ink); }
.nav-item.active { background: var(--primary-50); color: var(--primary-700); font-weight: 600; }
.nav-item.active svg { color: var(--primary-600); }
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-item .counter {
  margin-left: auto;
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

.sidebar-footer {
  margin-top: auto;
  padding: var(--sp-3);
  border-top: 1px solid var(--border);
}

/* ============================================================
   Bottom nav (mobile)
   ============================================================ */
.bottom-nav {
  grid-area: bottomnav;
  display: flex;
  justify-content: space-around;
  align-items: center;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 0 var(--sp-2);
  position: sticky;
  bottom: 0;
  z-index: 10;
}
.bottom-nav-item {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 8px 0;
  font-size: 10px;
  color: var(--muted);
  cursor: pointer;
  font-weight: 500;
  transition: color var(--tr);
}
.bottom-nav-item svg { width: 22px; height: 22px; }
.bottom-nav-item.active { color: var(--primary-600); }
.bottom-nav-item.fab {
  background: var(--primary-600);
  color: #fff;
  width: 56px; height: 56px;
  border-radius: 50%;
  margin-top: -28px;
  flex: 0 0 auto;
  box-shadow: var(--shadow-lg);
  padding: 0;
  justify-content: center;
}
.bottom-nav-item.fab svg { width: 26px; height: 26px; }
@media (min-width: 992px) { .bottom-nav { display: none; } }

/* ============================================================
   Page heading
   ============================================================ */
.page-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
  flex-wrap: wrap;
}
.page-head h1 { font-size: var(--fs-2xl); line-height: 1.2; }
.page-head .sub { color: var(--muted); margin-top: 4px; font-size: var(--fs-sm); }

/* ============================================================
   Stat tiles (dashboard)
   ============================================================ */
.stats { display: grid; gap: var(--sp-4); grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); margin-bottom: var(--sp-6); }
.stat-tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--sp-5); transition: box-shadow var(--tr), transform var(--tr); }
.stat-tile:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.stat-tile .stat-label { display: flex; align-items: center; gap: var(--sp-2); color: var(--muted); font-size: var(--fs-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.stat-tile .stat-label svg { width: 16px; height: 16px; }
.stat-tile .stat-value { font-size: var(--fs-3xl); font-weight: 800; color: var(--ink); margin: var(--sp-2) 0 4px; letter-spacing: -0.02em; }
.stat-tile .stat-delta { font-size: var(--fs-xs); font-weight: 600; }
.stat-delta.up { color: var(--success); }
.stat-delta.down { color: var(--danger); }

/* ============================================================
   Toast
   ============================================================ */
.toast-stack { position: fixed; bottom: 24px; right: 24px; display: flex; flex-direction: column; gap: 8px; z-index: 1000; }
.toast { background: var(--ink); color: #fff; padding: 12px 16px; border-radius: var(--radius-md); font-size: var(--fs-sm); box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: 8px; min-width: 240px; }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

/* ============================================================
   Modal
   ============================================================ */
.modal-overlay { position: fixed; inset: 0; background: rgba(15, 23, 42, 0.5); backdrop-filter: blur(4px); display: none; align-items: center; justify-content: center; z-index: 100; padding: var(--sp-4); }
.modal-overlay.open { display: flex; }
.modal { background: var(--surface); border-radius: var(--radius-xl); max-width: 520px; width: 100%; max-height: 90vh; overflow-y: auto; padding: var(--sp-6); box-shadow: var(--shadow-lg); }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--sp-4); }
.modal h3 { font-size: var(--fs-lg); }