:root {
  --admin-bg: #f0f9fc;
  --admin-surface: #ffffff;
  --admin-border: #d6eaf1;
  --admin-primary: #00b2d8;
  --admin-primary-dark: #0090b3;
  --admin-primary-soft: #e4f4fa;
  --admin-text: #0a1f2e;
  --admin-muted: #4a8fa8;
  --admin-success: #2a9d8f;
  --admin-danger: #c0392b;
  --admin-warning: #e0a100;
  --admin-sidebar: #e4f2f8;
  --admin-sidebar-active: #00b2d8;
  --admin-shadow: 0 2px 14px rgba(10,31,46,0.06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  background: var(--admin-bg);
  color: var(--admin-text);
  min-height: 100vh;
  line-height: 1.5;
}

a { color: var(--admin-primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== LAYOUT ===== */
.admin-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.admin-sidebar {
  background: var(--admin-sidebar);
  border-right: 1px solid var(--admin-border);
  padding: 24px 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.admin-brand {
  padding: 0 24px 24px;
  border-bottom: 1px solid var(--admin-border);
  margin-bottom: 16px;
}
.admin-brand-name {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 3px;
  color: var(--admin-primary-dark);
}
.admin-brand-sub {
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--admin-muted);
  text-transform: uppercase;
  margin-top: 2px;
}

.admin-nav { display: flex; flex-direction: column; }
.admin-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  color: var(--admin-text);
  font-size: 14px;
  font-weight: 600;
  border-left: 3px solid transparent;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.admin-nav a:hover {
  background: rgba(0,178,216,0.08);
  text-decoration: none;
}
.admin-nav a.active {
  background: var(--admin-primary-soft);
  color: var(--admin-primary-dark);
  border-left-color: var(--admin-primary);
}
.admin-nav-icon {
  width: 20px; height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}
.admin-logout {
  margin-top: auto;
  padding: 16px 24px;
  border-top: 1px solid var(--admin-border);
}
.admin-logout form button {
  background: none;
  border: 1px solid var(--admin-border);
  color: var(--admin-muted);
  padding: 8px 14px;
  cursor: pointer;
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  width: 100%;
  border-radius: 2px;
  transition: all 0.15s;
}
.admin-logout form button:hover {
  background: var(--admin-danger);
  color: white;
  border-color: var(--admin-danger);
}

.admin-content {
  padding: 32px 40px;
  max-width: 100%;
  overflow-x: auto;
}
.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.admin-title {
  font-size: 26px;
  font-weight: 900;
  color: var(--admin-text);
  margin: 0;
}
.admin-subtitle {
  color: var(--admin-muted);
  font-size: 13px;
  margin-top: 4px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border: 1.5px solid var(--admin-primary);
  background: var(--admin-primary);
  color: white;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.15s;
  text-decoration: none;
}
.btn:hover { background: var(--admin-primary-dark); border-color: var(--admin-primary-dark); text-decoration: none; }
.btn-outline {
  background: transparent;
  color: var(--admin-primary-dark);
}
.btn-outline:hover {
  background: var(--admin-primary);
  color: white;
}
.btn-danger {
  background: var(--admin-danger);
  border-color: var(--admin-danger);
}
.btn-danger:hover {
  background: #a3311f;
  border-color: #a3311f;
}
.btn-muted {
  background: transparent;
  color: var(--admin-muted);
  border-color: var(--admin-border);
}
.btn-muted:hover {
  background: var(--admin-border);
  color: var(--admin-text);
}
.btn-sm {
  padding: 5px 12px;
  font-size: 11px;
}

/* ===== CARDS / PANELS ===== */
.panel {
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: 4px;
  padding: 24px;
  box-shadow: var(--admin-shadow);
  margin-bottom: 24px;
}
.panel-title {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--admin-text);
}

/* ===== STATS ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 18px;
  margin-bottom: 28px;
}
.stat-card {
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: 4px;
  padding: 20px 22px;
  box-shadow: var(--admin-shadow);
}
.stat-label {
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--admin-muted);
  margin-bottom: 8px;
}
.stat-value {
  font-size: 32px;
  font-weight: 900;
  color: var(--admin-primary-dark);
}
.stat-sub {
  font-size: 12px;
  color: var(--admin-muted);
  margin-top: 4px;
}

/* ===== TABLES ===== */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: var(--admin-shadow);
}
.table th, .table td {
  padding: 12px 14px;
  text-align: left;
  font-size: 13px;
  border-bottom: 1px solid var(--admin-border);
  vertical-align: top;
}
.table th {
  background: var(--admin-sidebar);
  color: var(--admin-primary-dark);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  font-weight: 700;
}
.table tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background: rgba(0,178,216,0.04); }

.badge {
  display: inline-block;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-radius: 2px;
  background: var(--admin-border);
  color: var(--admin-text);
}
.badge-primary { background: var(--admin-primary-soft); color: var(--admin-primary-dark); }
.badge-success { background: rgba(42,157,143,0.15); color: var(--admin-success); }
.badge-warning { background: rgba(224,161,0,0.15); color: var(--admin-warning); }
.badge-danger { background: rgba(192,57,43,0.15); color: var(--admin-danger); }
.badge-muted { background: #eef3f6; color: var(--admin-muted); }

.code-pill {
  display: inline-block;
  background: var(--admin-text);
  color: var(--admin-primary);
  padding: 2px 10px;
  font-family: ui-monospace, SFMono-Regular, 'Menlo', monospace;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 2px;
  border-radius: 2px;
}

/* ===== FORMS ===== */
.form-grid {
  display: grid;
  gap: 16px;
  max-width: 720px;
}
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}
.form-field label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--admin-muted);
  margin-bottom: 6px;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
  border: 1px solid var(--admin-border);
  background: white;
  color: var(--admin-text);
  border-radius: 2px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--admin-primary);
}
.form-field textarea {
  resize: vertical;
  min-height: 100px;
}
.form-field .field-error {
  display: block;
  color: var(--admin-danger);
  font-size: 12px;
  margin-top: 4px;
}
.form-field .field-hint {
  display: block;
  color: var(--admin-muted);
  font-size: 12px;
  margin-top: 4px;
  line-height: 1.5;
}
.form-field input[type="file"] {
  padding: 6px 0;
  font-size: 13px;
}
.photo-preview {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}
.photo-preview img {
  max-width: 220px;
  max-height: 220px;
  object-fit: cover;
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: 4px;
  background: #fff;
}
.photo-remove {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--admin-danger);
  cursor: pointer;
}
.photo-remove input[type="checkbox"] {
  accent-color: var(--admin-danger);
}
.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

/* ===== ACCOUNT PANEL ===== */
.panel-note {
  color: var(--admin-muted);
  font-size: 13px;
  line-height: 1.6;
  margin: -4px 0 18px;
}
.account-meta {
  margin: 0;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 18px;
  font-size: 14px;
}
.account-meta dt {
  color: var(--admin-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 700;
  align-self: center;
}
.account-meta dd {
  margin: 0;
  color: var(--admin-ink, var(--admin-primary-dark));
  font-weight: 700;
}

/* ===== FLASH ===== */
.flash {
  padding: 12px 16px;
  margin-bottom: 20px;
  border-left: 4px solid var(--admin-primary);
  background: var(--admin-primary-soft);
  color: var(--admin-primary-dark);
  border-radius: 2px;
  font-size: 14px;
}
.flash.flash-error {
  border-left-color: var(--admin-danger);
  background: rgba(192,57,43,0.08);
  color: var(--admin-danger);
}

/* ===== PAGINATION (admin) ===== */
.pager {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-top: 20px;
}
.pager-info { color: var(--admin-muted); font-size: 13px; }
.page-size { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--admin-muted); }
.page-size select {
  padding: 5px 10px;
  border: 1px solid var(--admin-border);
  background: white;
  border-radius: 2px;
  font-size: 13px;
}

/* ===== LOGIN ===== */
.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  background:
    radial-gradient(ellipse at 20% 80%, rgba(0,178,216,0.18) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(0,100,160,0.1) 0%, transparent 50%),
    var(--admin-bg);
}
.login-card {
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: 6px;
  padding: 40px 36px;
  box-shadow: 0 20px 60px rgba(10,31,46,0.12);
  max-width: 380px;
  width: 100%;
}
.login-brand {
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 4px;
  color: var(--admin-primary-dark);
  text-align: center;
  margin-bottom: 8px;
}
.login-sub {
  font-size: 12px;
  color: var(--admin-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 28px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 860px) {
  .admin-layout {
    grid-template-columns: 1fr;
  }
  .admin-sidebar {
    position: relative;
    height: auto;
    padding: 16px 0;
  }
  .admin-content { padding: 20px 16px; }
  .admin-nav { flex-direction: row; overflow-x: auto; }
  .admin-nav a { flex: 1 0 auto; border-left: none; border-bottom: 3px solid transparent; }
  .admin-nav a.active { border-left: none; border-bottom-color: var(--admin-primary); }
  .admin-brand { padding-bottom: 12px; margin-bottom: 8px; }
  .admin-logout { border-top: 1px solid var(--admin-border); margin-top: 12px; }
}