/* ========================================
   Admin Panel - Stylesheet
   ======================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --admin-primary:    #1d3557;
  --admin-accent:     #e63946;
  --admin-success:    #10b981;
  --admin-warning:    #f59e0b;
  --admin-danger:     #ef4444;
  --admin-sidebar-w:  240px;

  --gray-50:  #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;

  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.10);
  --transition: 200ms ease;
}

body { font-family: 'Inter', system-ui, sans-serif; background: var(--gray-100); color: var(--gray-900); -webkit-font-smoothing: antialiased; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ---- Login ---- */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #1d3557 0%, #457b9d 100%); }
.login-container { width: 100%; padding: 16px; }
.login-card { background: #fff; border-radius: 12px; padding: 40px; max-width: 400px; margin: 0 auto; box-shadow: 0 20px 60px rgba(0,0,0,.2); }
.login-logo { text-align: center; margin-bottom: 24px; }
.login-logo__main { display: block; font-size: 2rem; font-weight: 900; color: var(--admin-primary); letter-spacing: 2px; }
.login-logo__sub { font-size: .65rem; font-weight: 700; letter-spacing: 4px; color: var(--admin-accent); text-transform: uppercase; }
.login-title { text-align: center; font-size: 1.1rem; font-weight: 600; color: var(--gray-700); margin-bottom: 24px; }
.login-form { display: flex; flex-direction: column; gap: 16px; }
.login-back { display: block; text-align: center; margin-top: 20px; font-size: .85rem; color: var(--gray-500); transition: color var(--transition); }
.login-back:hover { color: var(--admin-primary); }

/* ---- Layout ---- */
.admin-body { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--admin-sidebar-w);
  background: var(--admin-primary);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  overflow-y: auto;
  z-index: 200;
  transition: transform var(--transition);
}
.sidebar__header { padding: 20px 16px; border-bottom: 1px solid rgba(255,255,255,.1); display: flex; align-items: center; justify-content: space-between; }
.sidebar__logo { display: flex; flex-direction: column; line-height: 1; }
.sidebar__logo-main { font-size: 1.25rem; font-weight: 900; color: #fff; letter-spacing: 1px; }
.sidebar__logo-sub { font-size: .55rem; font-weight: 700; letter-spacing: 3px; color: var(--admin-accent); text-transform: uppercase; margin-top: 2px; }
.sidebar__close { display: none; background: none; border: none; color: rgba(255,255,255,.5); font-size: 1.2rem; cursor: pointer; }

.sidebar__nav { padding: 16px 8px; display: flex; flex-direction: column; }
.sidebar__link { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: var(--radius-md); font-size: .875rem; font-weight: 500; color: rgba(255,255,255,.7); transition: background var(--transition), color var(--transition); margin-bottom: 2px; }
.sidebar__link svg { width: 18px; height: 18px; flex-shrink: 0; }
.sidebar__link:hover { background: rgba(255,255,255,.1); color: #fff; }
.sidebar__link--active { background: rgba(255,255,255,.15); color: #fff; }
.sidebar__link--logout { color: rgba(255,100,100,.8); margin-top: 8px; }
.sidebar__link--logout:hover { background: rgba(255,100,100,.15); color: #ff6464; }
.sidebar__divider { height: 1px; background: rgba(255,255,255,.1); margin: 12px 0; }

.admin-wrapper { margin-left: var(--admin-sidebar-w); flex: 1; display: flex; flex-direction: column; min-height: 100vh; }

.admin-header { background: #fff; border-bottom: 1px solid var(--gray-200); padding: 12px 24px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-sm); }
.admin-header__toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 4px; }
.admin-header__toggle span { display: block; width: 22px; height: 2px; background: var(--gray-700); border-radius: 2px; }
.admin-header__user { display: flex; align-items: center; gap: 8px; font-size: .875rem; font-weight: 500; color: var(--gray-700); }
.admin-header__user svg { width: 18px; height: 18px; }

.admin-main { flex: 1; padding: 24px; }

/* ---- Page header ---- */
.admin-page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.admin-page-title { font-size: 1.35rem; font-weight: 700; color: var(--gray-900); }
.admin-page-header__actions { display: flex; gap: 8px; }

/* ---- Stats ---- */
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-bottom: 24px; }
.stat-card { background: #fff; border-radius: var(--radius-md); padding: 20px; box-shadow: var(--shadow-sm); display: flex; align-items: center; gap: 16px; }
.stat-card__icon { width: 48px; height: 48px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.stat-card__icon svg { width: 22px; height: 22px; color: #fff; }
.stat-card__icon--blue   { background: #3b82f6; }
.stat-card__icon--yellow { background: #f59e0b; }
.stat-card__icon--green  { background: #10b981; }
.stat-card__icon--red    { background: #ef4444; }
.stat-card__content { display: flex; flex-direction: column; }
.stat-card__value { font-size: 1.6rem; font-weight: 700; color: var(--gray-900); line-height: 1; }
.stat-card__label { font-size: .8rem; color: var(--gray-500); margin-top: 4px; }

/* ---- Admin card ---- */
.admin-card { background: #fff; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); margin-bottom: 24px; border: 1px solid var(--gray-200); }
.admin-card__header { padding: 16px 20px; border-bottom: 1px solid var(--gray-200); display: flex; align-items: center; justify-content: space-between; }
.admin-card__title { font-size: 1rem; font-weight: 600; color: var(--gray-900); }

/* ---- Table ---- */
.table-responsive { overflow-x: auto; }
.admin-table { width: 100%; border-collapse: collapse; font-size: .875rem; }
.admin-table thead { background: var(--gray-50); }
.admin-table th { padding: 12px 16px; text-align: left; font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .5px; color: var(--gray-500); border-bottom: 1px solid var(--gray-200); white-space: nowrap; }
.admin-table td { padding: 12px 16px; border-bottom: 1px solid var(--gray-100); vertical-align: middle; }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--gray-50); }
.table-actions { display: flex; gap: 6px; white-space: nowrap; }
.table-title { display: flex; align-items: center; gap: 10px; }
.table-thumb { width: 48px; height: 36px; object-fit: cover; border-radius: var(--radius-sm); flex-shrink: 0; }
.admin-link { color: var(--admin-primary); font-weight: 500; transition: color var(--transition); }
.admin-link:hover { color: var(--admin-accent); }

/* ---- Badges & Status ---- */
.status-badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .5px; }
.status-badge--publicado { background: #dcfce7; color: #16a34a; }
.status-badge--rascunho  { background: #fef3c7; color: #d97706; }
.badge { display: inline-block; padding: 3px 10px; border-radius: 4px; font-size: .7rem; font-weight: 700; letter-spacing: .5px; text-transform: uppercase; color: #fff; line-height: 1.5; }
.color-dot { display: inline-block; width: 20px; height: 20px; border-radius: 50%; vertical-align: middle; }
.text-green { color: #16a34a; font-weight: 600; }

/* ---- Filters ---- */
.admin-filters { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; gap: 12px; flex-wrap: wrap; }
.admin-filters__form { display: flex; gap: 10px; }
.admin-filters__count { font-size: .85rem; color: var(--gray-500); }

/* ---- Forms ---- */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: .85rem; font-weight: 600; color: var(--gray-700); margin-bottom: 6px; }
.form-label--required::after { content: ' *'; color: var(--admin-danger); }
.form-control { width: 100%; padding: 8px 12px; border: 1.5px solid var(--gray-300); border-radius: var(--radius-md); font-size: .875rem; color: var(--gray-900); background: #fff; transition: border-color var(--transition); outline: none; }
.form-control:focus { border-color: var(--admin-primary); }
.form-control--sm { width: auto; padding: 6px 10px; font-size: .8rem; }
textarea.form-control { resize: vertical; line-height: 1.6; font-family: inherit; }
.form-help { font-size: .75rem; color: var(--gray-400); margin-top: 4px; display: block; }
.form-check { display: flex; align-items: center; gap: 8px; padding: 8px 0; font-size: .875rem; cursor: pointer; }
.form-check input[type=checkbox] { width: 16px; height: 16px; cursor: pointer; }
.form-actions { padding-top: 8px; display: flex; gap: 8px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }

/* Admin form layout */
.admin-form { }
.admin-form__layout { display: grid; grid-template-columns: 1fr 300px; gap: 24px; }
.admin-form__sidebar .admin-card { }

/* Editor textarea */
.editor { font-family: 'Georgia', serif; font-size: .95rem; line-height: 1.7; min-height: 300px; }

/* ---- Admin Buttons ---- */
.btn-admin { display: inline-block; padding: 9px 18px; border-radius: var(--radius-md); font-size: .875rem; font-weight: 600; cursor: pointer; border: 1.5px solid transparent; transition: background var(--transition), color var(--transition), border-color var(--transition); text-align: center; white-space: nowrap; }
.btn-admin--primary   { background: var(--admin-primary); color: #fff; border-color: var(--admin-primary); }
.btn-admin--primary:hover { background: #162843; border-color: #162843; }
.btn-admin--secondary { background: var(--gray-100); color: var(--gray-700); border-color: var(--gray-300); }
.btn-admin--secondary:hover { background: var(--gray-200); }
.btn-admin--danger    { background: #fee2e2; color: var(--admin-danger); border-color: #fca5a5; }
.btn-admin--danger:hover { background: var(--admin-danger); color: #fff; border-color: var(--admin-danger); }
.btn-admin--ghost     { background: transparent; color: var(--gray-500); border-color: var(--gray-300); }
.btn-admin--ghost:hover { background: var(--gray-100); color: var(--gray-700); }
.btn-admin--sm        { padding: 5px 12px; font-size: .8rem; }
.btn-admin--full      { width: 100%; }

/* ---- Alerts ---- */
.alert { padding: 12px 16px; border-radius: var(--radius-md); margin-bottom: 20px; font-size: .875rem; font-weight: 500; }
.alert--success { background: #dcfce7; color: #15803d; border: 1px solid #bbf7d0; }
.alert--error   { background: #fee2e2; color: #b91c1c; border: 1px solid #fca5a5; }

/* ---- Two col ---- */
.admin-two-col { display: grid; grid-template-columns: 360px 1fr; gap: 24px; }

/* ---- Pagination ---- */
.pagination { display: flex; justify-content: center; gap: 6px; padding: 24px 0; flex-wrap: wrap; }
.pagination__btn { display: inline-block; padding: 7px 14px; border: 1.5px solid var(--gray-300); border-radius: var(--radius-md); font-size: .875rem; font-weight: 500; color: var(--gray-700); transition: background var(--transition), color var(--transition), border-color var(--transition); }
.pagination__btn:hover, .pagination__btn--active { background: var(--admin-primary); color: #fff; border-color: var(--admin-primary); }

/* ---- img preview ---- */
.img-preview { margin-bottom: 8px; min-height: 10px; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .admin-form__layout { grid-template-columns: 1fr; }
  .admin-form__sidebar { order: -1; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  .form-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar--open { transform: translateX(0); }
  .sidebar__close { display: block; }
  .admin-wrapper { margin-left: 0; }
  .admin-header__toggle { display: flex; }
  .admin-two-col { grid-template-columns: 1fr; }
  .admin-filters { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .admin-main { padding: 16px; }
  .admin-form__sidebar { grid-template-columns: 1fr; }
}