/* =============================================================================
   ADMIN-CORE.CSS — Estilos Base do Módulo de Administração
   Versão: 2.2.0 (Adicionado .admin-kpi-error) | Data: 2026-07-21
   ============================================================================= */

:root {
  --admin-primary: #0d5d2e; --admin-primary-dark: #0a4724; --admin-accent: #2e8b57;
  --admin-success: #28a745; --admin-warning: #ffc107; --admin-danger: #dc3545; --admin-info: #17a2b8; --admin-secondary: #6c757d;
  --admin-bg-body: #f5f7fa; --admin-bg-card: #ffffff; --admin-bg-sidebar: #1a2332;
  --admin-text-dark: #2c3e50; --admin-text-muted: #6c757d; --admin-text-light: #ffffff;
  --admin-border: #e0e0e0; --admin-border-radius: 8px;
  --admin-shadow-sm: 0 1px 3px rgba(0,0,0,0.08); --admin-shadow: 0 2px 8px rgba(0,0,0,0.1); --admin-shadow-lg: 0 4px 16px rgba(0,0,0,0.15);
  --admin-transition: all 0.25s ease;
  --admin-sidebar-width: 260px; --admin-header-height: 60px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--admin-bg-body); color: var(--admin-text-dark); line-height: 1.5; min-height: 100vh; }
a { color: var(--admin-primary); text-decoration: none; transition: var(--admin-transition); }

.admin-app { display: flex; min-height: 100vh; }
.admin-sidebar { width: var(--admin-sidebar-width); background: var(--admin-bg-sidebar); color: var(--admin-text-light); display: flex; flex-direction: column; position: fixed; left: 0; top: 0; bottom: 0; z-index: 1000; overflow-y: auto; }
.admin-sidebar-header { padding: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); display: flex; align-items: center; gap: 12px; }
.admin-sidebar-logo { width: 40px; height: 40px; background: var(--admin-primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; }
.admin-sidebar-brand { font-size: 1.1rem; font-weight: 600; }
.admin-sidebar-brand small { display: block; font-size: 0.75rem; opacity: 0.7; margin-top: 2px; }
.admin-sidebar-nav { flex: 1; padding: 16px 0; }
.admin-sidebar-section { margin-bottom: 8px; }
.admin-sidebar-label { padding: 8px 20px; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1px; opacity: 0.5; font-weight: 600; }
.admin-sidebar-link { display: flex; align-items: center; gap: 12px; padding: 12px 20px; color: rgba(255,255,255,0.75); transition: var(--admin-transition); border-left: 3px solid transparent; }
.admin-sidebar-link:hover { background: rgba(255,255,255,0.05); color: var(--admin-text-light); }
.admin-sidebar-link.active { background: rgba(13, 93, 46, 0.3); color: var(--admin-text-light); border-left-color: var(--admin-primary); }
.admin-sidebar-link i { width: 20px; text-align: center; }
.admin-sidebar-footer { padding: 16px 20px; border-top: 1px solid rgba(255,255,255,0.1); }
.admin-sidebar-user { display: flex; align-items: center; gap: 10px; }

.admin-main { flex: 1; margin-left: var(--admin-sidebar-width); display: flex; flex-direction: column; min-height: 100vh; }
.admin-header { height: var(--admin-header-height); background: var(--admin-bg-card); border-bottom: 1px solid var(--admin-border); display: flex; align-items: center; justify-content: space-between; padding: 0 24px; position: sticky; top: 0; z-index: 100; box-shadow: var(--admin-shadow-sm); }
.admin-header-title { font-size: 1.2rem; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.admin-header-actions { display: flex; align-items: center; gap: 12px; }
.admin-header-btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 4px; font-size: 0.85rem; cursor: pointer; border: 1px solid var(--admin-border); background: var(--admin-bg-card); transition: var(--admin-transition); }
.admin-header-btn.danger { color: var(--admin-danger); border-color: var(--admin-danger); }
.admin-content { flex: 1; padding: 24px; max-width: 1400px; }

.admin-kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin-bottom: 24px; }
.admin-kpi-card { background: var(--admin-bg-card); border-radius: var(--admin-border-radius); padding: 20px; box-shadow: var(--admin-shadow); border: 1px solid var(--admin-border); }
.admin-kpi-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.admin-kpi-label { font-size: 0.85rem; color: var(--admin-text-muted); }
.admin-kpi-icon { width: 40px; height: 40px; border-radius: 4px; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; }
.admin-kpi-icon.primary { background: rgba(13, 93, 46, 0.1); color: var(--admin-primary); }
.admin-kpi-icon.success { background: rgba(40, 167, 69, 0.1); color: var(--admin-success); }
.admin-kpi-icon.warning { background: rgba(255, 193, 7, 0.1); color: var(--admin-warning); }
.admin-kpi-icon.info { background: rgba(23, 162, 184, 0.1); color: var(--admin-info); }
.admin-kpi-value { font-size: 1.8rem; font-weight: 700; line-height: 1.2; }
.admin-kpi-sub { font-size: 0.8rem; color: var(--admin-text-muted); margin-top: 4px; }

/* Decisão ARCH-003: Estilo para KPI com falha */
.admin-kpi-error {
  display: flex; align-items: center; gap: 8px; color: var(--admin-danger); font-size: 0.95rem; font-weight: 500;
}
.admin-kpi-error i { font-size: 1.1rem; }

.admin-panel { background: var(--admin-bg-card); border-radius: var(--admin-border-radius); box-shadow: var(--admin-shadow); border: 1px solid var(--admin-border); margin-bottom: 24px; }
.admin-panel-header { padding: 16px 24px; border-bottom: 1px solid var(--admin-border); display: flex; justify-content: space-between; }
.admin-panel-title { font-size: 1rem; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.admin-panel-body { padding: 20px 24px; }

.admin-module-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.admin-module-card { background: var(--admin-bg-card); border-radius: var(--admin-border-radius); padding: 24px; border: 1px solid var(--admin-border); cursor: pointer; text-align: center; display: block; color: var(--admin-text-dark); }
.admin-module-card:hover { box-shadow: var(--admin-shadow-lg); border-color: var(--admin-primary); }
.admin-module-icon { width: 64px; height: 64px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.8rem; margin: 0 auto 16px; }
.admin-module-icon.users { background: rgba(13, 93, 46, 0.1); color: var(--admin-primary); }
.admin-module-icon.monitor { background: rgba(23, 162, 184, 0.1); color: var(--admin-info); }
.admin-module-icon.logs { background: rgba(255, 193, 7, 0.1); color: var(--admin-warning); }
.admin-module-title { font-size: 1.1rem; font-weight: 600; }
.admin-module-desc { font-size: 0.85rem; color: var(--admin-text-muted); margin: 8px 0; }
.admin-module-status { display: inline-block; padding: 4px 12px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; }
.admin-module-status.active { background: rgba(40, 167, 69, 0.1); color: var(--admin-success); }
.admin-module-status.beta { background: rgba(23, 162, 184, 0.1); color: var(--admin-info); }

.admin-toast-container { position: fixed; top: 20px; right: 20px; z-index: 3000; display: flex; flex-direction: column; gap: 10px; }
.admin-toast { background: var(--admin-bg-card); border-radius: var(--admin-border-radius); box-shadow: var(--admin-shadow-lg); padding: 14px 18px; display: flex; align-items: center; gap: 12px; border-left: 4px solid; animation: toastSlideIn 0.3s ease; }
.admin-toast.success { border-left-color: var(--admin-success); } .admin-toast.error { border-left-color: var(--admin-danger); } .admin-toast.warning { border-left-color: var(--admin-warning); } .admin-toast.info { border-left-color: var(--admin-info); }
@keyframes toastSlideIn { from { opacity: 0; transform: translateX(100%); } to { opacity: 1; transform: translateX(0); } }

.admin-loading-overlay { display: none; position: fixed; background: rgba(255,255,255,0.8); z-index: 1500; justify-content: center; align-items: center; flex-direction: column; width: 100%; height: 100%; top:0; left:0; }
.admin-loading-overlay.active { display: flex; }
.admin-spinner { width: 48px; height: 48px; border: 4px solid var(--admin-border); border-top-color: var(--admin-primary); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.admin-modal-overlay { display: none; position: fixed; background: rgba(0,0,0,0.5); z-index: 2000; justify-content: center; align-items: center; width: 100%; height: 100%; top:0; left:0; backdrop-filter: blur(4px); }
.admin-modal-overlay.active { display: flex; }
.admin-modal-box { background: var(--admin-bg-card); border-radius: var(--admin-border-radius); width: 100%; max-width: 520px; animation: modalSlideIn 0.3s ease; }
@keyframes modalSlideIn { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
.admin-modal-header { padding: 20px 24px; border-bottom: 1px solid var(--admin-border); display: flex; justify-content: space-between; }
.admin-modal-title { font-size: 1.1rem; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.admin-modal-close { background: none; border: none; font-size: 1.5rem; color: var(--admin-text-muted); cursor: pointer; }
.admin-modal-body { padding: 24px; }
.admin-modal-footer { padding: 16px 24px; border-top: 1px solid var(--admin-border); display: flex; justify-content: flex-end; gap: 10px; }

.admin-form-group { margin-bottom: 16px; }
.admin-form-label { display: block; margin-bottom: 6px; font-size: 0.85rem; font-weight: 600; }
.admin-form-input, .admin-form-select, .admin-form-textarea { width: 100%; padding: 10px 14px; border: 1px solid var(--admin-border); border-radius: 4px; font-size: 0.9rem; }
.admin-form-input:focus { outline: none; border-color: var(--admin-primary); }

.admin-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 20px; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; border: none; }
.admin-btn-primary { background: var(--admin-primary); color: white; }
.admin-btn-outline { background: transparent; border: 1px solid var(--admin-border); color: var(--admin-text-muted); }
.admin-badge { display: inline-flex; padding: 4px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; }
.admin-badge-danger { background: rgba(220, 53, 69, 0.1); color: var(--admin-danger); }
.admin-badge-warning { background: rgba(255, 193, 7, 0.1); color: #856404; }
.admin-badge-success { background: rgba(40, 167, 69, 0.1); color: var(--admin-success); }
.admin-badge-secondary { background: rgba(108, 117, 125, 0.1); color: var(--admin-secondary); }