/* ============================================================
   ERPS X DOCS — ADMIN PANEL STYLES
   Clean, modern admin theme with dark sidebar
   ============================================================ */

:root {
  --admin-sidebar-bg: #0f172a;
  --admin-sidebar-w: 260px;
  --admin-header-h: 60px;
  --admin-primary: #6366f1;
  --admin-primary-light: #818cf8;
  --admin-text: #1e293b;
  --admin-text-muted: #94a3b8;
  --admin-bg: #f1f5f9;
  --admin-card-bg: #ffffff;
  --admin-border: #e2e8f0;
  --admin-radius: .75rem;
  --admin-shadow: 0 1px 3px rgba(0,0,0,.06);
  --admin-success: #10b981;
  --admin-warning: #f59e0b;
  --admin-danger: #ef4444;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--admin-bg);
  color: var(--admin-text);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ---------- SIDEBAR ---------- */
.admin-sidebar {
  position: fixed; top: 0; left: 0; bottom: 0;
  width: var(--admin-sidebar-w);
  background: var(--admin-sidebar-bg);
  z-index: 1000; display: flex; flex-direction: column;
  overflow-y: auto;
}

.admin-sidebar-brand {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
  display: flex; align-items: center; gap: .75rem;
}
.admin-sidebar-brand .brand-text {
  font-size: 1.05rem; font-weight: 700; color: #fff;
  letter-spacing: -.01em;
}
.admin-sidebar-brand .brand-badge {
  font-size: .6rem; font-weight: 600; color: var(--admin-primary-light);
  background: rgba(99,102,241,.15);
  padding: .15rem .45rem; border-radius: .3rem;
  text-transform: uppercase; letter-spacing: .04em;
}

.admin-nav { padding: 1rem 0; flex: 1; }

.admin-nav-label {
  padding: .5rem 1.5rem;
  font-size: .68rem; font-weight: 700; color: rgba(255,255,255,.3);
  text-transform: uppercase; letter-spacing: .06em;
  margin-top: .75rem;
}

.admin-nav-link {
  display: flex; align-items: center; gap: .75rem;
  padding: .65rem 1.5rem;
  color: rgba(255,255,255,.55);
  font-size: .85rem; font-weight: 500;
  transition: all .2s; border-left: 3px solid transparent;
}
.admin-nav-link:hover {
  color: rgba(255,255,255,.85);
  background: rgba(255,255,255,.04);
}
.admin-nav-link.active {
  color: #fff;
  background: rgba(99,102,241,.12);
  border-left-color: var(--admin-primary);
}
.admin-nav-link i { font-size: 1.15rem; width: 1.25rem; text-align: center; }

.admin-nav-link .badge {
  margin-left: auto;
  font-size: .65rem; font-weight: 600;
  background: var(--admin-primary); color: #fff;
  padding: .15rem .45rem; border-radius: 1rem;
}

.admin-sidebar-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid rgba(255,255,255,.06);
}
.admin-sidebar-footer a {
  display: flex; align-items: center; gap: .5rem;
  color: rgba(255,255,255,.4); font-size: .8rem;
  transition: color .2s;
}
.admin-sidebar-footer a:hover { color: rgba(255,255,255,.7); }

/* ---------- MAIN CONTENT ---------- */
.admin-main {
  margin-left: var(--admin-sidebar-w);
  min-height: 100vh;
}

/* Header */
.admin-header {
  height: var(--admin-header-h);
  background: var(--admin-card-bg);
  border-bottom: 1px solid var(--admin-border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem;
  position: sticky; top: 0; z-index: 100;
}

.admin-page-title {
  font-size: 1.2rem; font-weight: 700; color: var(--admin-text);
  display: flex; align-items: center; gap: .5rem;
}
.admin-page-title i { color: var(--admin-primary); }

.admin-header-actions {
  display: flex; align-items: center; gap: .75rem;
}

/* Content Area */
.admin-content {
  padding: 2rem;
}

/* ---------- CARDS ---------- */
.admin-card {
  background: var(--admin-card-bg);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  box-shadow: var(--admin-shadow);
}
.admin-card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--admin-border);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: .75rem;
}
.admin-card-header h3 {
  font-size: 1rem; font-weight: 700;
  display: flex; align-items: center; gap: .5rem;
}
.admin-card-body { padding: 1.5rem; }

/* Stats Cards */
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem; margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--admin-card-bg);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  padding: 1.5rem; display: flex; align-items: center; gap: 1rem;
  transition: all .25s; box-shadow: var(--admin-shadow);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0,0,0,.06); }
.stat-card .stat-icon {
  width: 3rem; height: 3rem; border-radius: .65rem;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; flex-shrink: 0;
}
.stat-card .stat-value {
  font-size: 1.6rem; font-weight: 800; color: var(--admin-text);
  line-height: 1;
}
.stat-card .stat-label {
  font-size: .78rem; color: var(--admin-text-muted); font-weight: 500;
  margin-top: .2rem;
}

/* ---------- TABLE ---------- */
.admin-table {
  width: 100%; border-collapse: collapse;
}
.admin-table th {
  text-align: left; padding: .75rem 1rem;
  font-size: .75rem; font-weight: 700; color: var(--admin-text-muted);
  text-transform: uppercase; letter-spacing: .04em;
  background: var(--admin-bg);
  border-bottom: 1px solid var(--admin-border);
}
.admin-table td {
  padding: .85rem 1rem;
  border-bottom: 1px solid #f1f5f9;
  font-size: .88rem; vertical-align: middle;
}
.admin-table tr:hover td { background: rgba(99,102,241,.02); }

.admin-table .cell-title {
  font-weight: 600; color: var(--admin-text);
}
.admin-table .cell-slug {
  font-size: .78rem; color: var(--admin-text-muted);
  font-family: monospace;
}

/* Badges */
.badge-status {
  display: inline-flex; align-items: center; gap: .3rem;
  font-size: .72rem; font-weight: 600; padding: .25rem .65rem;
  border-radius: 1rem; text-transform: capitalize;
}
.badge-published, .badge-active {
  background: rgba(16,185,129,.08); color: #059669;
}
.badge-draft, .badge-inactive {
  background: rgba(245,158,11,.08); color: #d97706;
}

/* Action Buttons */
.btn-action {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .35rem .65rem; border-radius: .4rem;
  font-size: .78rem; font-weight: 500; border: none;
  cursor: pointer; transition: all .2s;
}
.btn-action-edit {
  background: rgba(99,102,241,.08); color: var(--admin-primary);
}
.btn-action-edit:hover { background: rgba(99,102,241,.15); }
.btn-action-delete {
  background: rgba(239,68,68,.06); color: var(--admin-danger);
}
.btn-action-delete:hover { background: rgba(239,68,68,.12); }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .55rem 1.25rem; border-radius: .5rem;
  font-size: .85rem; font-weight: 600; border: none;
  cursor: pointer; transition: all .25s;
  font-family: inherit;
}
.btn-primary {
  background: var(--admin-primary); color: #fff;
  box-shadow: 0 2px 8px rgba(99,102,241,.25);
}
.btn-primary:hover { background: #4f46e5; transform: translateY(-1px); }
.btn-secondary {
  background: var(--admin-bg); color: var(--admin-text);
  border: 1px solid var(--admin-border);
}
.btn-secondary:hover { background: #e2e8f0; }
.btn-danger {
  background: var(--admin-danger); color: #fff;
}
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: .4rem .85rem; font-size: .8rem; }

/* ---------- FORMS ---------- */
.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block; font-size: .82rem; font-weight: 600;
  color: var(--admin-text); margin-bottom: .4rem;
}
.form-control {
  width: 100%; padding: .6rem .85rem;
  background: #fff; border: 1px solid var(--admin-border);
  border-radius: .5rem; font-size: .88rem;
  color: var(--admin-text); outline: none;
  transition: border-color .2s, box-shadow .2s;
  font-family: inherit;
}
.form-control:focus {
  border-color: var(--admin-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.1);
}
.form-control-sm { padding: .45rem .65rem; font-size: .82rem; }
textarea.form-control { min-height: 100px; resize: vertical; }
select.form-control { cursor: pointer; }
.form-hint {
  font-size: .76rem; color: var(--admin-text-muted);
  margin-top: .25rem;
}
.form-required { color: var(--admin-danger); }

/* ---------- MODAL ---------- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(0,0,0,.4);
  backdrop-filter: blur(4px);
  display: none; align-items: center; justify-content: center;
  padding: 1rem;
}
.modal-overlay.show { display: flex; }
.modal-box {
  background: #fff; border-radius: var(--admin-radius);
  box-shadow: 0 20px 60px rgba(0,0,0,.15);
  width: 100%; max-width: 550px;
  max-height: 90vh; overflow-y: auto;
}
.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--admin-border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-header h4 { font-size: 1.05rem; font-weight: 700; }
.modal-close {
  background: none; border: none; font-size: 1.3rem;
  color: var(--admin-text-muted); cursor: pointer;
  transition: color .2s;
}
.modal-close:hover { color: var(--admin-text); }
.modal-body { padding: 1.5rem; }
.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--admin-border);
  display: flex; gap: .5rem; justify-content: flex-end;
}

/* ---------- ALERTS ---------- */
.alert {
  padding: .85rem 1.25rem; border-radius: .5rem;
  font-size: .88rem; font-weight: 500; margin-bottom: 1rem;
  display: flex; align-items: center; gap: .5rem;
}
.alert-success { background: rgba(16,185,129,.08); color: #059669; border: 1px solid rgba(16,185,129,.15); }
.alert-danger { background: rgba(239,68,68,.06); color: #dc2626; border: 1px solid rgba(239,68,68,.12); }
.alert-warning { background: rgba(245,158,11,.06); color: #d97706; border: 1px solid rgba(245,158,11,.12); }

/* ---------- LOGIN PAGE ---------- */
.login-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
}
.login-card {
  background: #fff; border-radius: 1rem;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
  padding: 3rem; width: 100%; max-width: 400px;
}
.login-card h1 {
  font-size: 1.5rem; font-weight: 800; color: var(--admin-text);
  margin-bottom: .25rem; text-align: center;
}
.login-card .login-sub {
  text-align: center; color: var(--admin-text-muted);
  font-size: .88rem; margin-bottom: 2rem;
}
.login-card .btn { width: 100%; justify-content: center; padding: .75rem; }

/* ---------- ARTICLE EDITOR ---------- */
.editor-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--admin-card-bg);
  border-bottom: 1px solid var(--admin-border);
  position: sticky; top: 0; z-index: 100;
  flex-wrap: wrap; gap: .75rem;
}
.editor-content { padding: 2rem; }
.editor-grid {
  display: grid; grid-template-columns: 1fr 320px;
  gap: 1.5rem;
}
.editor-main { min-width: 0; }
.editor-sidebar {}

/* Category tree in admin */
.cat-tree-item {
  display: flex; align-items: center; gap: .75rem;
  padding: .75rem 1rem;
  border-bottom: 1px solid #f1f5f9;
  transition: background .15s;
}
.cat-tree-item:hover { background: rgba(99,102,241,.02); }
.cat-tree-item.is-child { padding-left: 2.5rem; }
.cat-tree-item .cat-color {
  width: 4px; height: 32px; border-radius: 2px; flex-shrink: 0;
}
.cat-tree-item .cat-info { flex: 1; min-width: 0; }
.cat-tree-item .cat-name { font-weight: 600; color: var(--admin-text); font-size: .88rem; }
.cat-tree-item .cat-slug { font-size: .75rem; color: var(--admin-text-muted); font-family: monospace; }
.cat-tree-item .cat-actions { display: flex; gap: .35rem; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .admin-sidebar { transform: translateX(-100%); transition: transform .3s; }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-main { margin-left: 0; }
  .admin-header { padding: 0 1rem; }
  .admin-content { padding: 1rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .editor-grid { grid-template-columns: 1fr; }
}