:root {
  --primary:       #4A7FB5;
  --primary-dark:  #2C5F8A;
  --primary-light: #7FA8CC;
  --bg:            #EEF2F7;
  --card:          #FFFFFF;
  --text:          #2C3E50;
  --muted:         #6B8CA8;
  --border:        #CBD8E7;
  --accent:        #E8F0F8;
  --success:       #48BB78;
  --danger:        #E53E3E;
  --orange:        #DD6B20;
  --sidebar-w:     260px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body { font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }
a { color: inherit; text-decoration: none; }
input, select, textarea, button { font-family: inherit; font-size: inherit; }

/* ── Layout ─────────────────────────────────────────────────────────────────── */
.admin-layout { display: flex; min-height: 100vh; }
.admin-main { flex: 1; display: flex; flex-direction: column; min-width: 0; margin-left: var(--sidebar-w); }
.admin-topbar { background: var(--card); border-bottom: 1px solid var(--border); padding: 0 28px; height: 56px; display: flex; align-items: center; gap: 12px; position: sticky; top: 0; z-index: 10; }
.topbar-title { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1rem; flex: 1; }
.topbar-title i { color: var(--primary); }
.topbar-title .text-muted { font-weight: 400; }
.topbar-back { color: var(--muted); margin-right: 4px; display: inline-flex; align-items: center; padding: 4px; border-radius: 6px; transition: .15s; }
.topbar-back:hover { background: var(--accent); color: var(--primary-dark); }
.admin-content { padding: 28px 32px; flex: 1; }

/* ── Sidebar ─────────────────────────────────────────────────────────────────── */
.admin-sidebar { position: fixed; top: 0; left: 0; width: var(--sidebar-w); height: 100vh; background: var(--card); border-right: 1px solid var(--border); display: flex; flex-direction: column; overflow-y: auto; z-index: 100; }
.sidebar-brand { display: flex; align-items: center; gap: 12px; padding: 20px 20px 16px; border-bottom: 1px solid var(--border); }
.sidebar-brand i { font-size: 1.8rem; color: var(--primary); flex-shrink: 0; }
.brand-name { font-weight: 800; font-size: .95rem; color: var(--text); }
.brand-sub { font-size: .72rem; color: var(--muted); margin-top: 1px; }
.sidebar-section { padding: 8px 0; border-bottom: 1px solid var(--border); }
.sidebar-label { font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); padding: 8px 20px 4px; }
.sidebar-subgroup-label { font-size: .68rem; font-weight: 700; letter-spacing: .04em; color: var(--muted); padding: 10px 20px 4px 36px; }
.sidebar-item { display: flex; align-items: center; gap: 9px; padding: 9px 20px; font-size: .84rem; color: var(--muted); cursor: pointer; transition: .15s; border-left: 3px solid transparent; }
.sidebar-item:hover { background: var(--accent); color: var(--primary-dark); border-left-color: var(--primary-light); }
.sidebar-item.active { background: var(--accent); color: var(--primary-dark); font-weight: 600; border-left-color: var(--primary); }
.sidebar-item i { font-size: 1rem; flex-shrink: 0; }
.sidebar-ranking-header { display: flex; align-items: center; gap: 8px; padding: 9px 20px; font-size: .84rem; font-weight: 600; color: var(--text); cursor: pointer; transition: .15s; }
.sidebar-ranking-header:hover { background: var(--accent); }
.sidebar-ranking-header i:first-child { color: var(--primary); }
.sidebar-caret { margin-left: auto; font-size: .75rem; transition: transform .2s; }
.sidebar-subitem { display: flex; align-items: center; gap: 8px; padding: 7px 20px 7px 36px; font-size: .82rem; color: var(--muted); transition: .15s; border-left: 3px solid transparent; }
.sidebar-subitem:hover { background: var(--accent); color: var(--primary-dark); }
.sidebar-subitem.active { color: var(--primary-dark); font-weight: 600; }
.sidebar-subitem i { font-size: .9rem; }
.sidebar-subitem-compact { padding-left: 36px; font-size: .8rem; }
.sidebar-subitem-season { color: var(--text); }
.sidebar-subitem-nested { padding-left: 52px; font-size: .78rem; }
.sidebar-subitem-nested i { font-size: .82rem; color: var(--primary-light); }
.sidebar-bottom { margin-top: auto; border-top: 1px solid var(--border); padding: 8px 0; }
.sidebar-user { display: flex; align-items: center; gap: 10px; padding: 12px 20px; }
.sidebar-user i { font-size: 1.4rem; color: var(--muted); }
.user-name { font-size: .85rem; font-weight: 600; }
.user-role { font-size: .72rem; color: var(--muted); }
.sidebar-logout { color: #c53030 !important; }
.sidebar-logout:hover { background: #fff0f0 !important; border-left-color: #c53030 !important; }
.sidebar-toggle { display: none; position: fixed; bottom: 20px; right: 20px; z-index: 200; background: var(--primary); color: #fff; border: none; border-radius: 50%; width: 48px; height: 48px; font-size: 1.2rem; cursor: pointer; box-shadow: 0 4px 16px rgba(0,0,0,.2); }

/* ── Cards ───────────────────────────────────────────────────────────────────── */
.card { background: var(--card); border-radius: 12px; box-shadow: 0 2px 10px rgba(0,0,0,.06); border: 1px solid var(--border); margin-bottom: 20px; }
.card:last-child { margin-bottom: 0; }
.card-header { padding: 14px 20px; border-bottom: 1px solid var(--border); font-weight: 700; font-size: .9rem; display: flex; align-items: center; gap: 8px; color: var(--text); }
.card-header i { color: var(--primary); }
.card-body { padding: 20px; }
.card-footer { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; align-items: center; gap: 12px; }
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.info-card { background: var(--card); border-radius: 12px; padding: 20px; border: 1.5px solid var(--border); box-shadow: 0 1px 6px rgba(0,0,0,.06); transition: .2s; }
.info-card:hover { border-color: var(--primary-light); box-shadow: 0 4px 16px rgba(74,127,181,.12); }
.info-card-header { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.info-card h3 { font-size: .95rem; font-weight: 700; margin-bottom: 6px; }
.card-desc { font-size: .82rem; color: var(--muted); line-height: 1.5; margin-bottom: 12px; }
.card-meta { font-size: .8rem; margin-top: 4px; }
.card-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }

/* ── Stats ───────────────────────────────────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 16px; margin-bottom: 28px; }
.stat-card { background: var(--card); border-radius: 12px; padding: 20px; text-align: center; border: 1px solid var(--border); box-shadow: 0 2px 8px rgba(0,0,0,.05); }
.stat-icon { font-size: 1.8rem; color: var(--primary); margin-bottom: 8px; }
.stat-value { font-size: 2rem; font-weight: 800; color: var(--text); }
.stat-label { font-size: .78rem; color: var(--muted); margin-top: 4px; text-transform: uppercase; letter-spacing: .05em; }

/* ── Tables ──────────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table thead { background: linear-gradient(90deg, var(--primary-dark), var(--primary)); }
.data-table th { color: rgba(255,255,255,.9); font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; padding: 11px 14px; text-align: left; white-space: nowrap; }
.data-table td { padding: 11px 14px; border-bottom: 1px solid var(--accent); font-size: .86rem; vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: #f5f8fd; }
.data-table td.actions { white-space: nowrap; text-align: right; }
.data-table-sm td, .data-table-sm th { padding: 7px 10px; font-size: .8rem; }
.row-inactive { opacity: .6; }
.text-nowrap { white-space: nowrap; }

/* ── Forms ───────────────────────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
.form-group:last-child { margin-bottom: 0; }
.form-group label { font-size: .82rem; font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 5px; }
.form-group input[type=text], .form-group input[type=password], .form-group input[type=number],
.form-group input[type=date], .form-group input[type=email], .form-group select, .form-group textarea {
  padding: 9px 12px; border: 1.5px solid var(--border); border-radius: 8px; font-size: .9rem;
  color: var(--text); background: #fff; outline: none; transition: border-color .15s; width: 100%;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-group input[type=file] { padding: 6px; border-style: dashed; background: var(--bg); }
.form-row { display: flex; gap: 14px; flex-wrap: wrap; }
.form-row .form-group { flex: 1; min-width: 140px; }
.form-row .form-group.flex-2 { flex: 2; }
.form-row .form-group.flex-3 { flex: 3; }
.form-inline { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
.form-inline .form-group { margin-bottom: 0; }
.form-page { max-width: 620px; }
.form-actions { margin-top: 20px; }
.align-end { justify-content: flex-end; }
.help-text { font-size: .78rem; color: var(--muted); margin-top: 2px; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 16px; }
.filter-group { display: flex; align-items: center; gap: 6px; background: var(--card); border: 1.5px solid var(--border); border-radius: 8px; padding: 0 10px; }
.filter-group i { color: var(--muted); }
.filter-group input { border: none; padding: 8px 4px; outline: none; background: transparent; width: 200px; }
.filter-bar select { padding: 9px 12px; border: 1.5px solid var(--border); border-radius: 8px; background: var(--card); outline: none; }

/* Radio/checkbox */
.radio-group, .checkbox-group { display: flex; flex-direction: column; gap: 8px; }
.radio-label, .checkbox-label { display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: .88rem; font-weight: normal; }
.radio-label input, .checkbox-label input { flex-shrink: 0; width: 16px; height: 16px; accent-color: var(--primary); }

/* ── Buttons ─────────────────────────────────────────────────────────────────── */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 16px; border-radius: 8px; font-size: .87rem; font-weight: 600; cursor: pointer; border: none; transition: .15s; text-decoration: none; white-space: nowrap; }
.btn i { font-size: 1rem; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; border: 1.5px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--accent); }
.btn-ghost { background: transparent; color: var(--muted); }
.btn-ghost:hover { background: var(--accent); color: var(--primary-dark); }
.btn-success { background: #48BB78; color: #fff; }
.btn-success:hover { background: #38A169; }
.btn-danger { background: #E53E3E; color: #fff; }
.btn-danger:hover { background: #C53030; }
.btn-sm { padding: 5px 10px; font-size: .8rem; border-radius: 6px; }
.btn-sm i { font-size: .85rem; }

/* ── Badges ──────────────────────────────────────────────────────────────────── */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 8px; border-radius: 100px; font-size: .72rem; font-weight: 700; }
.badge i { font-size: .75rem; }
.badge-blue { background: #dbeafe; color: #1e40af; }
.badge-green { background: #d1fae5; color: #065f46; }
.badge-orange { background: #fed7aa; color: #9a3412; }
.badge-gray { background: #f1f5f9; color: #64748b; }

/* ── Alerts ──────────────────────────────────────────────────────────────────── */
.alert { padding: 12px 16px; border-radius: 8px; font-size: .88rem; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.alert i { font-size: 1rem; flex-shrink: 0; }
.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-danger { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.alert-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }

/* ── Modals ──────────────────────────────────────────────────────────────────── */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: flex; align-items: center; justify-content: center; z-index: 1000; padding: 20px; }
.modal { background: var(--card); border-radius: 16px; width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto; box-shadow: 0 24px 64px rgba(0,0,0,.3); }
.modal-lg { max-width: 720px; }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.modal-header h3 { font-size: 1rem; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.modal-header h3 i { color: var(--primary); }
.modal-close { background: none; border: none; cursor: pointer; color: var(--muted); font-size: 1.1rem; padding: 4px; border-radius: 4px; }
.modal-close:hover { background: var(--accent); color: var(--text); }
.modal-body { padding: 20px; }
.modal-footer { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

/* ── Empty state ─────────────────────────────────────────────────────────────── */
.empty-state { text-align: center; padding: 60px 20px; color: var(--muted); }
.empty-state i { font-size: 3rem; display: block; margin-bottom: 12px; color: var(--border); }
.empty-state p { margin-bottom: 16px; }

/* ── Info box ────────────────────────────────────────────────────────────────── */
.info-box { background: var(--accent); border: 1px solid var(--primary-light); border-radius: 8px; padding: 12px 16px; font-size: .85rem; display: flex; align-items: flex-start; gap: 8px; color: var(--primary-dark); }
.info-box i { flex-shrink: 0; font-size: 1rem; margin-top: 1px; }

/* ── Utility ─────────────────────────────────────────────────────────────────── */
.text-muted { color: var(--muted); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.link-dark { color: var(--text); font-weight: 600; }
.link-dark:hover { color: var(--primary-dark); text-decoration: underline; }
.link-muted { color: var(--muted); }
.link-muted:hover { color: var(--primary-dark); }
.mb-4 { margin-bottom: 20px; }
.section-header { margin: 28px 0 16px; }
.section-header h2 { font-size: 1.1rem; font-weight: 700; }
.page-header { margin-bottom: 24px; }
.page-header h1 { font-size: 1.4rem; font-weight: 800; }
.page-header p { color: var(--muted); font-size: .88rem; margin-top: 4px; }
.logo-placeholder { font-weight: 700; }

.rk-logo-preview-list {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 22px;
}

.rk-logo-preview {
  width: 20px;
  height: 20px;
  object-fit: contain;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: #fff;
  padding: 1px;
}

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .admin-main { margin-left: 0; }
  .admin-sidebar { transform: translateX(-100%); transition: transform .25s; }
  .admin-sidebar.open { transform: translateX(0); }
  .sidebar-toggle { display: flex; align-items: center; justify-content: center; }
  .admin-content { padding: 20px 16px; }
  .admin-topbar { padding: 0 16px; }
}
@media (max-width: 600px) {
  .cards-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { flex-direction: column; }
}