/* ══════════════════════════════════════════════════════════════════════
   OASIS ADMIN PANEL — Design System
   Clean, dark, professional admin UI
   ══════════════════════════════════════════════════════════════════════ */

:root {
  --admin-bg: #0c0d10;
  --admin-surface: rgba(18, 20, 26, 0.95);
  --admin-surface-hover: rgba(25, 28, 36, 0.95);
  --admin-surface-raised: rgba(30, 33, 42, 0.95);
  --admin-border: rgba(255,255,255,0.06);
  --admin-border-hover: rgba(255,255,255,0.12);
  --admin-text: #f0f0f5;
  --admin-text-dim: rgba(255,255,255,0.6);
  --admin-text-muted: rgba(255,255,255,0.35);
  --admin-accent: #2dd4a8;
  --admin-accent-dim: rgba(45,212,168,0.15);
  --admin-danger: #e76f51;
  --admin-danger-dim: rgba(231,111,81,0.12);
  --admin-warning: #f4a261;
  --admin-warning-dim: rgba(244,162,97,0.12);
  --admin-info: #5b8def;
  --admin-info-dim: rgba(91,141,239,0.12);
  --admin-success: #57cc99;
  --admin-success-dim: rgba(87,204,153,0.12);
  --admin-purple: #b494f7;
  --admin-purple-dim: rgba(180,148,247,0.12);
  --admin-pink: #f78ebf;
  --admin-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --admin-radius: 14px;
  --admin-radius-sm: 10px;
  --admin-radius-xs: 6px;
  --admin-transition: 0.2s ease;
}

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

body {
  font-family: var(--admin-font);
  background: var(--admin-bg);
  color: var(--admin-text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Sidebar ── */
.admin-sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 260px;
  background: var(--admin-surface);
  border-right: 1px solid var(--admin-border);
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
}

.admin-sidebar__logo {
  padding: 0 24px 24px;
  border-bottom: 1px solid var(--admin-border);
  margin-bottom: 8px;
}

.admin-sidebar__logo h2 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--admin-accent);
  display: flex;
  align-items: center;
  gap: 10px;
}

.admin-sidebar__logo span {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--admin-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
  margin-top: 4px;
}

.admin-sidebar__nav {
  flex: 1;
  padding: 8px 12px;
}

.admin-nav-section {
  margin-bottom: 20px;
}

.admin-nav-section__title {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--admin-text-muted);
  padding: 0 12px 8px;
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--admin-radius-sm);
  color: var(--admin-text-dim);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--admin-transition);
  margin-bottom: 2px;
}

.admin-nav-item:hover {
  background: rgba(255,255,255,0.04);
  color: var(--admin-text);
}

.admin-nav-item.active {
  background: var(--admin-accent-dim);
  color: var(--admin-accent);
}

.admin-nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.7;
}

.admin-nav-item.active svg {
  opacity: 1;
}

.admin-sidebar__footer {
  padding: 16px 12px;
  border-top: 1px solid var(--admin-border);
}

.admin-sidebar__back {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--admin-radius-sm);
  color: var(--admin-text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--admin-transition);
}

.admin-sidebar__back:hover {
  background: rgba(255,255,255,0.04);
  color: var(--admin-text);
}

/* ── Main Content ── */
.admin-main {
  margin-left: 260px;
  min-height: 100vh;
  padding: 32px 40px;
}

.admin-header {
  margin-bottom: 32px;
}

.admin-header__title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.admin-header__subtitle {
  color: var(--admin-text-dim);
  font-size: 0.9rem;
}

/* ── Cards ── */
.admin-card {
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  padding: 24px;
  transition: border-color var(--admin-transition);
}

.admin-card:hover {
  border-color: var(--admin-border-hover);
}

.admin-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.admin-card__title {
  font-size: 1rem;
  font-weight: 600;
}

.admin-card__badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Stat Cards ── */
.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.admin-stat {
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  padding: 20px 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: border-color var(--admin-transition);
}

.admin-stat:hover {
  border-color: var(--admin-border-hover);
}

.admin-stat__icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.admin-stat__icon svg {
  width: 20px;
  height: 20px;
}

.admin-stat__value {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 4px;
}

.admin-stat__label {
  font-size: 0.8rem;
  color: var(--admin-text-dim);
}

.admin-stat__change {
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 4px;
}

.admin-stat__change.up { color: var(--admin-success); }
.admin-stat__change.down { color: var(--admin-danger); }

/* ── Grid Layouts ── */
.admin-grid {
  display: grid;
  gap: 16px;
}

.admin-grid--2 { grid-template-columns: repeat(2, 1fr); }
.admin-grid--3 { grid-template-columns: repeat(3, 1fr); }
.admin-grid--4 { grid-template-columns: repeat(4, 1fr); }

/* ── Tables ── */
.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th {
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--admin-text-muted);
  padding: 12px 16px;
  border-bottom: 1px solid var(--admin-border);
}

.admin-table td {
  padding: 14px 16px;
  font-size: 0.875rem;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  color: var(--admin-text-dim);
}

.admin-table tr:hover td {
  background: rgba(255,255,255,0.02);
  color: var(--admin-text);
}

/* ── Buttons ── */
.admin-btn {
  padding: 8px 16px;
  border-radius: var(--admin-radius-xs);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--admin-transition);
  font-family: var(--admin-font);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.admin-btn--primary {
  background: var(--admin-accent);
  color: #0a1a15;
}
.admin-btn--primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.admin-btn--ghost {
  background: rgba(255,255,255,0.04);
  color: var(--admin-text-dim);
  border: 1px solid var(--admin-border);
}
.admin-btn--ghost:hover {
  background: rgba(255,255,255,0.08);
  color: var(--admin-text);
}

.admin-btn--danger {
  background: var(--admin-danger-dim);
  color: var(--admin-danger);
}
.admin-btn--danger:hover {
  background: rgba(231,111,81,0.2);
}

.admin-btn--sm {
  padding: 5px 10px;
  font-size: 0.75rem;
}

/* ── Status Badges ── */
.admin-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.admin-status--not-developed {
  background: rgba(255,255,255,0.06);
  color: var(--admin-text-muted);
}
.admin-status--developing {
  background: var(--admin-warning-dim);
  color: var(--admin-warning);
}
.admin-status--developed {
  background: var(--admin-success-dim);
  color: var(--admin-success);
}
.admin-status--v1 {
  background: var(--admin-info-dim);
  color: var(--admin-info);
}
.admin-status--v2 {
  background: var(--admin-purple-dim);
  color: var(--admin-purple);
}
.admin-status--v3 {
  background: var(--admin-accent-dim);
  color: var(--admin-accent);
}
.admin-status--hidden {
  background: var(--admin-danger-dim);
  color: var(--admin-danger);
}
.admin-status--visible {
  background: var(--admin-success-dim);
  color: var(--admin-success);
}

.admin-status__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ── Toggle Switch ── */
.admin-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  cursor: pointer;
}

.admin-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.admin-toggle__track {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  border-radius: 12px;
  transition: background var(--admin-transition);
}

.admin-toggle input:checked + .admin-toggle__track {
  background: var(--admin-accent);
}

.admin-toggle__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--admin-transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.admin-toggle input:checked ~ .admin-toggle__thumb {
  transform: translateX(20px);
}

/* ── Search ── */
.admin-search {
  position: relative;
  margin-bottom: 20px;
}

.admin-search__input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
  color: var(--admin-text);
  font-size: 0.875rem;
  font-family: var(--admin-font);
  outline: none;
  transition: border-color var(--admin-transition);
}

.admin-search__input:focus {
  border-color: var(--admin-accent);
}

.admin-search__input::placeholder {
  color: var(--admin-text-muted);
}

.admin-search__icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--admin-text-muted);
  width: 18px;
  height: 18px;
}

/* ── Select / Dropdown ── */
.admin-select {
  padding: 6px 28px 6px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-xs);
  color: var(--admin-text);
  font-size: 0.8rem;
  font-family: var(--admin-font);
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.4)' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}

.admin-select:focus {
  border-color: var(--admin-accent);
}

.admin-select option {
  background: #1a1d24;
  color: var(--admin-text);
}

/* ── Tabs ── */
.admin-tabs {
  display: flex;
  gap: 4px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--admin-radius-sm);
  padding: 4px;
  margin-bottom: 20px;
}

.admin-tab {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--admin-text-dim);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--admin-transition);
  font-family: var(--admin-font);
}

.admin-tab:hover {
  color: var(--admin-text);
  background: rgba(255,255,255,0.04);
}

.admin-tab.active {
  background: var(--admin-accent-dim);
  color: var(--admin-accent);
}

/* ── Announcement Banner ── */
.admin-announcement-preview {
  background: linear-gradient(135deg, var(--admin-accent-dim), rgba(45,212,168,0.05));
  border: 1px solid rgba(45,212,168,0.2);
  border-radius: var(--admin-radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}

.admin-announcement-preview__text {
  flex: 1;
  font-size: 0.875rem;
  color: var(--admin-text);
}

/* ── Empty State ── */
.admin-empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--admin-text-muted);
}

.admin-empty__icon {
  margin-bottom: 12px;
  opacity: 0.4;
}

.admin-empty__text {
  font-size: 0.9rem;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .admin-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .admin-grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .admin-sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }
  .admin-sidebar.open {
    transform: translateX(0);
  }
  .admin-main {
    margin-left: 0;
    padding: 24px 16px;
  }
  .admin-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .admin-grid--2, .admin-grid--3, .admin-grid--4 {
    grid-template-columns: 1fr;
  }
}

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.admin-animate {
  animation: fadeIn 0.4s ease-out both;
}

.admin-animate:nth-child(1) { animation-delay: 0.05s; }
.admin-animate:nth-child(2) { animation-delay: 0.1s; }
.admin-animate:nth-child(3) { animation-delay: 0.15s; }
.admin-animate:nth-child(4) { animation-delay: 0.2s; }
.admin-animate:nth-child(5) { animation-delay: 0.25s; }
.admin-animate:nth-child(6) { animation-delay: 0.3s; }

/* ── Textarea ── */
.admin-textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
  color: var(--admin-text);
  font-size: 0.875rem;
  font-family: var(--admin-font);
  outline: none;
  resize: vertical;
  min-height: 80px;
  transition: border-color var(--admin-transition);
}

.admin-textarea:focus {
  border-color: var(--admin-accent);
}

/* ── Input ── */
.admin-input {
  padding: 8px 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-xs);
  color: var(--admin-text);
  font-size: 0.85rem;
  font-family: var(--admin-font);
  outline: none;
  transition: border-color var(--admin-transition);
}

.admin-input:focus {
  border-color: var(--admin-accent);
}

/* ── Toast ── */
.admin-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--admin-surface-raised);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
  padding: 12px 20px;
  font-size: 0.85rem;
  color: var(--admin-text);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  z-index: 10000;
  animation: toastIn 0.3s ease-out;
  display: flex;
  align-items: center;
  gap: 8px;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}