/* ─────────────── BanglaKey shared design system ─────────────── */
:root {
  --emerald-50:  #ECFDF5;
  --emerald-100: #D1FAE5;
  --emerald-500: #10B981;
  --emerald-600: #059669;
  --emerald-700: #047857;

  --slate-50:  #F8FAFC;
  --slate-100: #F1F5F9;
  --slate-200: #E2E8F0;
  --slate-300: #CBD5E1;
  --slate-400: #94A3B8;
  --slate-500: #64748B;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1E293B;
  --slate-900: #0F172A;

  --amber-500: #F59E0B;
  --amber-50:  #FFFBEB;
  --red-500:   #EF4444;
  --red-50:    #FEF2F2;
  --blue-500:  #3B82F6;
  --blue-50:   #EFF6FF;

  --bg:        var(--slate-50);
  --surface:   #FFFFFF;
  --surface-2: var(--slate-100);
  --border:    var(--slate-200);
  --border-strong: var(--slate-300);
  --text:      var(--slate-900);
  --text-2:    var(--slate-600);
  --text-3:    var(--slate-400);
  --accent:    var(--emerald-500);
  --accent-hover: var(--emerald-600);
  --accent-bg: var(--emerald-50);
  --accent-text: var(--emerald-700);

  --shadow-sm: 0 1px 2px rgba(15,23,42,.05);
  --shadow-md: 0 4px 12px -2px rgba(15,23,42,.08), 0 2px 4px -1px rgba(15,23,42,.04);
  --shadow-lg: 0 12px 32px -8px rgba(15,23,42,.16), 0 4px 8px -2px rgba(15,23,42,.06);

  --radius: 8px;
  --radius-lg: 12px;
}

[data-theme="dark"] {
  --bg:        var(--slate-900);
  --surface:   var(--slate-800);
  --surface-2: #182338;
  --border:    var(--slate-700);
  --border-strong: #3f516e;
  --text:      #F8FAFC;
  --text-2:    #94A3B8;
  --text-3:    #64748B;
  --accent-bg: rgba(16,185,129,.12);
  --accent-text: #6EE7B7;
}

[data-skin="admin"] {
  /* Admin uses slate-heavy chrome */
  --bg:        #0B1220;
  --surface:   var(--slate-800);
  --surface-2: #182338;
  --border:    var(--slate-700);
  --border-strong: #3f516e;
  --text:      #F8FAFC;
  --text-2:    #94A3B8;
  --text-3:    #64748B;
  --accent-bg: rgba(16,185,129,.12);
  --accent-text: #6EE7B7;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
.bn { font-family: 'Noto Sans Bengali', sans-serif; }
.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }

/* ─────────────── App shell ─────────────── */
.app-shell {
  height: 100vh;
  display: grid;
  grid-template-columns: 248px 1fr;
}

/* Sidebar */
.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.sb-brand {
  display: flex; align-items: center; gap: 10px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
}
.brand-mark {
  width: 30px; height: 30px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--emerald-500), var(--emerald-600));
  display: grid; place-items: center;
  color: white;
  font-family: 'Noto Sans Bengali', sans-serif;
  font-weight: 600;
  font-size: 17px;
  line-height: 1;
  flex-shrink: 0;
}
.brand-mark.admin {
  background: linear-gradient(135deg, var(--slate-700), var(--slate-900));
}
.sb-brand-name b { display: block; line-height: 1.2; }
.sb-brand-name span {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 1px;
}
.sb-brand-name span.admin { color: var(--amber-500); }

.sb-nav {
  flex: 1;
  overflow-y: auto;
  padding: 14px 12px;
}
.sb-section {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  padding: 12px 12px 6px;
}
.sb-link {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px;
  border-radius: 7px;
  color: var(--text-2);
  text-decoration: none;
  font-weight: 500;
  font-size: 13.5px;
  margin-bottom: 1px;
  cursor: pointer;
}
.sb-link:hover { background: var(--surface-2); color: var(--text); }
.sb-link.active {
  background: var(--accent-bg);
  color: var(--accent-text);
  font-weight: 600;
}
.sb-link svg { width: 16px; height: 16px; flex-shrink: 0; }
.sb-link .badge {
  margin-left: auto;
  background: var(--surface-2);
  color: var(--text-2);
  border-radius: 10px;
  padding: 1px 7px;
  font-size: 10.5px;
  font-weight: 600;
}
.sb-link.active .badge { background: var(--accent); color: white; }

.sb-footer {
  border-top: 1px solid var(--border);
  padding: 12px;
}
.sb-user {
  display: flex; align-items: center; gap: 10px;
  padding: 8px;
  border-radius: 8px;
  cursor: pointer;
}
.sb-user:hover { background: var(--surface-2); }
.avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, #818CF8, #6366F1);
  color: white;
  font-weight: 600;
  font-size: 13px;
  display: grid; place-items: center;
  flex-shrink: 0;
}
.avatar.admin { background: linear-gradient(135deg, var(--amber-500), #D97706); }
.sb-user-info { flex: 1; min-width: 0; }
.sb-user-info .name {
  font-size: 13px; font-weight: 600; color: var(--text);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.sb-user-info .role {
  font-size: 11px; color: var(--text-3);
}

/* Main pane */
.main-pane {
  display: flex; flex-direction: column;
  overflow: hidden;
  background: var(--bg);
}
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.topbar-l { display: flex; align-items: center; gap: 16px; min-width: 0; }
.topbar-l .crumb {
  font-size: 12px; color: var(--text-3); font-weight: 500;
}
.topbar-l h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 10px;
}
.topbar-r { display: flex; align-items: center; gap: 8px; }

.search {
  position: relative;
  display: inline-flex; align-items: center;
}
.search input {
  height: 34px;
  padding: 0 12px 0 34px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  width: 240px;
  outline: none;
  transition: all .15s ease;
}
.search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
  background: var(--surface);
}
.search svg {
  position: absolute; left: 11px;
  width: 14px; height: 14px;
  color: var(--text-3);
  pointer-events: none;
}

.icon-btn {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 7px;
  color: var(--text-2);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
}
.icon-btn:hover { background: var(--surface-2); color: var(--text); }
.icon-btn svg { width: 17px; height: 17px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  border-radius: 7px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}
.btn svg { width: 14px; height: 14px; }
.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-outline {
  color: var(--text);
  background: var(--surface);
  border-color: var(--border-strong);
}
.btn-outline:hover { background: var(--surface-2); }
.btn-ghost { color: var(--text-2); background: transparent; }
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }
.btn-danger { background: var(--red-500); color: white; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* Content scroll area */
.content {
  flex: 1;
  overflow-y: auto;
  padding: 24px 28px 60px;
}
.content::-webkit-scrollbar { width: 8px; }
.content::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.card-pad { padding: 18px 20px; }
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.card-head h3 {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text);
  display: flex; align-items: center; gap: 8px;
}
.card-head h3 svg { width: 14px; height: 14px; color: var(--text-3); }

/* Stat cards */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 22px;
}
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  position: relative;
  overflow: hidden;
}
.stat .label {
  font-size: 11px; font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  display: flex; align-items: center; gap: 6px;
}
.stat .label svg { width: 12px; height: 12px; }
.stat .value {
  font-size: 28px; font-weight: 600;
  letter-spacing: -0.02em;
  margin-top: 8px;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.stat .delta {
  font-size: 11.5px;
  margin-top: 6px;
  display: inline-flex; align-items: center; gap: 4px;
}
.stat .delta.up { color: var(--emerald-600); }
.stat .delta.down { color: var(--red-500); }
.stat .delta svg { width: 11px; height: 11px; }
.stat .spark {
  position: absolute;
  right: 12px; top: 14px;
  width: 60px; height: 24px;
  opacity: .6;
}

/* Tables */
.tbl-wrap {
  overflow-x: auto;
}
table.tbl {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
}
.tbl th {
  text-align: left;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-3);
  padding: 10px 16px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.tbl td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}
.tbl tr:last-child td { border-bottom: none; }
.tbl tr:hover td { background: color-mix(in oklab, var(--surface-2), transparent 40%); }
.tbl td.num { font-variant-numeric: tabular-nums; }

.chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  background: var(--surface-2);
  color: var(--text-2);
}
.chip.green { background: var(--accent-bg); color: var(--accent-text); }
.chip.amber { background: var(--amber-50); color: #B45309; }
.chip.red   { background: var(--red-50); color: #B91C1C; }
.chip.blue  { background: var(--blue-50); color: #1D4ED8; }
.chip.slate { background: var(--surface-2); color: var(--text-2); }
.chip .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

[data-theme="dark"] .chip.amber, [data-skin="admin"] .chip.amber { background: rgba(245,158,11,.14); color: #FCD34D; }
[data-theme="dark"] .chip.red, [data-skin="admin"] .chip.red { background: rgba(239,68,68,.14); color: #FCA5A5; }
[data-theme="dark"] .chip.blue, [data-skin="admin"] .chip.blue { background: rgba(59,130,246,.14); color: #93C5FD; }

/* Forms */
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
}
.field .hint {
  font-size: 11.5px;
  color: var(--text-3);
  margin-top: 5px;
}
.input, .select, .textarea {
  width: 100%;
  height: 38px;
  padding: 0 12px;
  border-radius: 7px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 13.5px;
  outline: none;
  transition: all .15s ease;
}
.textarea { height: auto; padding: 10px 12px; resize: vertical; min-height: 80px; line-height: 1.5; }
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

/* Pagination */
.pager {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--text-2);
}
.pager .controls { display: flex; gap: 4px; align-items: center; }
.pgbtn {
  width: 28px; height: 28px;
  border-radius: 6px;
  display: grid; place-items: center;
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border);
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
}
.pgbtn:hover { background: var(--surface-2); color: var(--text); }
.pgbtn.on { background: var(--accent); color: white; border-color: var(--accent); }
.pgbtn:disabled { opacity: .4; cursor: not-allowed; }
.pgbtn svg { width: 12px; height: 12px; }

/* Tweaks */
.tweaks-panel {
  position: fixed;
  bottom: 20px; right: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 14px;
  width: 240px;
  z-index: 100;
  display: none;
}
.tweaks-panel.open { display: block; }
.tweaks-panel h4 {
  margin: 0 0 10px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
}
.tweak-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 0;
  font-size: 13px;
}
.seg {
  display: inline-flex;
  background: var(--surface-2);
  border-radius: 6px;
  padding: 2px;
}
.seg button {
  border: none; background: transparent;
  padding: 4px 10px;
  border-radius: 4px;
  font-family: inherit;
  font-size: 12px;
  color: var(--text-2);
  cursor: pointer;
  font-weight: 500;
}
.seg button.on {
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.kbd {
  display: inline-block;
  padding: 1px 5px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-2);
  font-weight: 500;
}