/* =========================================================
   BinBuddy — Admin dashboard styles
   ========================================================= */

:root {
  --a-bg:       #f5f7fb;
  --a-surface:  #ffffff;
  --a-border:   #e1e3e8;
  --a-ink:      #0a0e17;
  --a-ink-soft: #2a303e;
  --a-ink-mute: #8a90a0;
  --a-sidebar-bg: #05070d;
  --a-sidebar-ink: #c5c9d1;
  --a-sidebar-ink-active: #ffffff;
  --a-accent: var(--bb-blue-600);
}

body.admin {
  background: var(--a-bg);
  color: var(--a-ink);
}

body.admin.is-dark {
  --a-bg: #05070d;
  --a-surface: #0a0e17;
  --a-border: #141925;
  --a-ink: #f1f2f5;
  --a-ink-soft: #c5c9d1;
  --a-ink-mute: #5b6172;
  --a-sidebar-bg: #03050a;
  --a-sidebar-ink: #8a90a0;
  --a-sidebar-ink-active: #ffffff;
}

.admin-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.admin-sidebar {
  background: var(--a-sidebar-bg);
  color: var(--a-sidebar-ink);
  padding: var(--sp-6) var(--sp-4);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  border-right: 1px solid rgba(255,255,255,0.05);
}

.admin-sidebar .brand {
  color: #fff;
  padding: 0 var(--sp-2);
  margin-bottom: var(--sp-8);
}

.admin-nav {
  list-style: none;
  padding: 0;
  margin: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.admin-nav__section {
  padding: var(--sp-3) var(--sp-3) var(--sp-2);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: rgba(203,213,225,0.5);
}
.admin-nav a, .admin-nav button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-3);
  color: var(--a-sidebar-ink);
  border-radius: var(--r-md);
  font-size: var(--bb-text-sm);
  font-weight: 500;
  transition: all var(--dur-fast) var(--ease-out);
  text-align: left;
  cursor: pointer;
}
.admin-nav a svg, .admin-nav button svg {
  width: 18px; height: 18px;
  flex-shrink: 0;
  opacity: 0.9;
}
.admin-nav a:hover, .admin-nav button:hover {
  background: rgba(255,255,255,0.05);
  color: #fff;
}
.admin-nav a.is-active {
  background: linear-gradient(135deg, rgba(13,93,255,0.15), rgba(22,163,74,0.1));
  color: var(--a-sidebar-ink-active);
  box-shadow: inset 3px 0 0 var(--bb-blue-500);
}
.admin-nav a.is-active svg { opacity: 1; color: var(--bb-blue-400); }

.admin-nav__badge {
  margin-left: auto;
  font-size: 10px;
  padding: 2px 6px;
  background: var(--bb-blue-500);
  color: #fff;
  border-radius: var(--r-pill);
  font-weight: 700;
}

.admin-user {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3);
  margin-top: var(--sp-4);
  background: rgba(255,255,255,0.04);
  border-radius: var(--r-md);
  border: 1px solid rgba(255,255,255,0.05);
}
.admin-user__avatar {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--bb-grad-primary);
  color: #fff;
  font-weight: 700;
  font-size: var(--bb-text-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.admin-user__info { flex: 1; min-width: 0; }
.admin-user__info strong {
  display: block;
  color: #fff;
  font-size: var(--bb-text-sm);
  font-weight: 600;
}
.admin-user__info span {
  color: rgba(203,213,225,0.6);
  font-size: 11px;
}
.admin-user__logout {
  color: var(--a-sidebar-ink);
  padding: 6px;
  border-radius: 8px;
}
.admin-user__logout:hover { background: rgba(255,255,255,0.08); color: #fff; }

/* ---------- Main ---------- */
.admin-main {
  overflow-x: hidden;
}

.admin-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-5) var(--sp-8);
  background: var(--a-surface);
  border-bottom: 1px solid var(--a-border);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
}

.admin-topbar__title h1 {
  font-size: var(--bb-text-2xl);
  margin: 0 0 2px;
  color: var(--a-ink);
}
.admin-topbar__title p { margin: 0; color: var(--a-ink-mute); font-size: var(--bb-text-sm); }

.admin-search {
  flex: 1;
  max-width: 360px;
  position: relative;
}
.admin-search input {
  width: 100%;
  padding: 10px 14px 10px 40px;
  font-family: inherit;
  font-size: var(--bb-text-sm);
  color: var(--a-ink);
  background: var(--a-bg);
  border: 1px solid var(--a-border);
  border-radius: var(--r-md);
  outline: none;
  transition: all var(--dur-fast) var(--ease-out);
}
.admin-search input:focus { background: var(--a-surface); border-color: var(--a-accent); box-shadow: 0 0 0 3px rgba(13,93,255,0.1); }
.admin-search svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px; height: 18px;
  color: var(--a-ink-mute);
}

.admin-topbar__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.admin-icon-btn {
  width: 38px; height: 38px;
  border-radius: var(--r-md);
  color: var(--a-ink-soft);
  display: inline-flex;
  align-items: center; justify-content: center;
  border: 1px solid var(--a-border);
  background: var(--a-surface);
  transition: all var(--dur-fast) var(--ease-out);
}
.admin-icon-btn:hover { background: var(--a-bg); color: var(--a-ink); }
.admin-icon-btn svg { width: 18px; height: 18px; }

.admin-content {
  padding: var(--sp-8);
}

.admin-page { display: none; animation: fadeIn 0.3s var(--ease-out); }
.admin-page.is-active { display: block; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- KPI Cards ---------- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-5);
  margin-bottom: var(--sp-8);
}

.kpi {
  background: var(--a-surface);
  padding: var(--sp-5);
  border-radius: var(--r-lg);
  border: 1px solid var(--a-border);
  position: relative;
  overflow: hidden;
}
.kpi::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 140px; height: 140px;
  background: radial-gradient(circle, rgba(13,93,255,0.08), transparent 70%);
  pointer-events: none;
}
.kpi__label {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  color: var(--a-ink-mute);
  font-size: var(--bb-text-sm);
  font-weight: 500;
  margin-bottom: var(--sp-3);
}
.kpi__icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--bb-blue-50);
  color: var(--bb-blue-600);
  display: inline-flex;
  align-items: center; justify-content: center;
}
body.admin.is-dark .kpi__icon { background: rgba(13,93,255,0.15); }
.kpi__icon svg { width: 16px; height: 16px; }

.kpi__value {
  font-family: var(--bb-font-display);
  font-size: var(--bb-text-3xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--a-ink);
  margin: 0;
}

.kpi__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-top: var(--sp-2);
  font-size: var(--bb-text-xs);
  color: var(--a-ink-mute);
}
.kpi__delta {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 2px 8px;
  border-radius: var(--r-pill);
  font-weight: 600;
}
.kpi__delta--up    { background: var(--bb-green-50); color: var(--bb-green-700); }
.kpi__delta--down  { background: #fef2f2; color: #b91c1c; }
body.admin.is-dark .kpi__delta--up { background: rgba(22,163,74,0.15); }
body.admin.is-dark .kpi__delta--down { background: rgba(239,68,68,0.15); }

/* ---------- Panel / card ---------- */
.panel {
  background: var(--a-surface);
  border: 1px solid var(--a-border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.panel__head {
  padding: var(--sp-5) var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  border-bottom: 1px solid var(--a-border);
}
.panel__head h3 {
  font-size: var(--bb-text-lg);
  margin: 0;
  color: var(--a-ink);
}
.panel__head p { margin: 2px 0 0; font-size: var(--bb-text-sm); color: var(--a-ink-mute); }
.panel__body { padding: var(--sp-6); }
.panel__body--tight { padding: var(--sp-4); }

.chart-wrap { position: relative; height: 280px; }
.chart-wrap--sm { height: 220px; }

.analytics-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--sp-6);
  margin-bottom: var(--sp-6);
}
.analytics-row--even {
  grid-template-columns: 1fr 1fr 1fr;
}

/* ---------- Table ---------- */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--bb-text-sm);
}
.table th {
  text-align: left;
  font-weight: 600;
  font-size: var(--bb-text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--a-ink-mute);
  padding: var(--sp-3) var(--sp-4);
  background: var(--a-bg);
  border-bottom: 1px solid var(--a-border);
}
.table td {
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid var(--a-border);
  color: var(--a-ink-soft);
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: rgba(13,93,255,0.03); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--r-pill);
  font-size: 11px;
  font-weight: 600;
  background: var(--bb-ink-100);
  color: var(--bb-ink-700);
}
.pill--blue   { background: var(--bb-blue-50); color: var(--bb-blue-700); }
.pill--green  { background: var(--bb-green-50); color: var(--bb-green-700); }
.pill--amber  { background: #fef3c7; color: #92400e; }
.pill--red    { background: #fee2e2; color: #b91c1c; }
body.admin.is-dark .pill--blue  { background: rgba(13,93,255,0.2); }
body.admin.is-dark .pill--green { background: rgba(22,163,74,0.2); }

/* ---------- Chat viewer (admin) ---------- */
.chat-viewer {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--sp-6);
  height: calc(100vh - 200px);
  min-height: 520px;
}
.chat-viewer__list {
  background: var(--a-surface);
  border: 1px solid var(--a-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.chat-viewer__list-head {
  padding: var(--sp-4);
  border-bottom: 1px solid var(--a-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.chat-viewer__list-head strong { font-family: var(--bb-font-display); font-size: var(--bb-text-sm); color: var(--a-ink); }
.chat-viewer__items {
  list-style: none;
  padding: 0;
  margin: 0;
  overflow-y: auto;
  flex: 1;
}
.chat-viewer__item {
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid var(--a-border);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out);
}
.chat-viewer__item:hover { background: var(--a-bg); }
.chat-viewer__item.is-active { background: var(--bb-blue-50); border-left: 3px solid var(--bb-blue-500); padding-left: calc(var(--sp-4) - 3px); }
body.admin.is-dark .chat-viewer__item.is-active { background: rgba(13,93,255,0.15); }
.chat-viewer__item strong { display: block; font-size: var(--bb-text-sm); color: var(--a-ink); }
.chat-viewer__item span { display: block; font-size: var(--bb-text-xs); color: var(--a-ink-mute); margin-top: 2px; }
.chat-viewer__item em { display: block; font-size: var(--bb-text-xs); color: var(--a-ink-soft); font-style: normal; margin-top: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.chat-viewer__pane {
  background: var(--a-surface);
  border: 1px solid var(--a-border);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.chat-viewer__pane-head {
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--a-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.chat-viewer__pane-head h4 { margin: 0; font-size: var(--bb-text-base); color: var(--a-ink); }
.chat-viewer__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-5);
  background: var(--a-bg);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}
.chat-viewer__footer {
  padding: var(--sp-4);
  border-top: 1px solid var(--a-border);
  display: flex;
  gap: var(--sp-2);
}
.chat-viewer__footer input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--a-border);
  border-radius: var(--r-md);
  background: var(--a-bg);
  font-family: inherit;
  font-size: var(--bb-text-sm);
  color: var(--a-ink);
  outline: none;
}
.chat-viewer__footer input:focus { border-color: var(--bb-blue-400); }

.chat-msg--admin-out { align-self: flex-end; background: var(--bb-grad-primary); color: #fff; }
.chat-msg--admin-in  { align-self: flex-start; background: var(--a-surface); color: var(--a-ink); border: 1px solid var(--a-border); }

/* ---------- Settings ---------- */
.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-6);
}
.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-4) 0;
  border-bottom: 1px solid var(--a-border);
  gap: var(--sp-4);
}
.setting-row:last-child { border-bottom: none; }
.setting-row__info strong { display: block; color: var(--a-ink); font-size: var(--bb-text-sm); }
.setting-row__info span { display: block; color: var(--a-ink-mute); font-size: var(--bb-text-xs); margin-top: 2px; }

.switch { position: relative; width: 42px; height: 24px; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch-slider {
  position: absolute;
  inset: 0;
  background: var(--a-border);
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease-out);
}
.switch-slider::before {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #fff;
  transition: transform var(--dur-fast) var(--ease-out);
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}
.switch input:checked + .switch-slider { background: var(--bb-blue-500); }
.switch input:checked + .switch-slider::before { transform: translateX(18px); }

.btn--admin-danger {
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}
.btn--admin-danger:hover { background: #fee2e2; }

.btn--admin-accent {
  background: var(--bb-grad-primary);
  color: #fff;
}

/* ---------- Mobile ---------- */
.admin-mobile-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--a-bg);
  color: var(--a-ink);
  align-items: center;
  justify-content: center;
}

@media (max-width: 1100px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .analytics-row, .analytics-row--even { grid-template-columns: 1fr; }
  .settings-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .admin-shell { grid-template-columns: 1fr; }
  .admin-sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: 280px;
    z-index: 50;
    transform: translateX(-100%);
    transition: transform var(--dur-base) var(--ease-out);
  }
  .admin-sidebar.is-open { transform: translateX(0); }
  .admin-mobile-toggle { display: inline-flex; }
  .admin-search { display: none; }
  .admin-content { padding: var(--sp-5); }
  .admin-topbar { padding: var(--sp-4) var(--sp-5); }
  .chat-viewer { grid-template-columns: 1fr; height: auto; }
}