/* ==============================================================
   DESIGN SYSTEM ADMIN - 90+
   Estilos globais, variáveis e componentes reutilizáveis
   ============================================================== */

/* ===== VARIÁVEIS ===== */
:root {
    /* Cores principais */
    --primary: #2563EB;
    --primary-light: #3B82F6;
    --primary-dark: #1D4ED8;
    --primary-bg: #EFF6FF;
    --primary-rgb: 37, 99, 235;
    
    /* Cores de status */
    --success: #22C55E;
    --success-bg: #F0FDF4;
    --danger: #EF4444;
    --danger-bg: #FEF2F2;
    --warning: #F59E0B;
    --warning-bg: #FFFBEB;
    --info: #8B5CF6;
    --info-bg: #F5F3FF;
    
    /* Cinzas */
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    
    /* Espaçamento */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Bordas */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transições */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Layout */
    --sidebar-width: 260px;
    --header-height: 64px;
    --sidebar-collapsed: 72px;
}

/* ===== RESET E BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-50);
    color: var(--gray-900);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* ===== LAYOUT PRINCIPAL ===== */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-base);
}

.admin-main.sidebar-collapsed {
    margin-left: var(--sidebar-collapsed);
}

.admin-content {
    padding: var(--spacing-lg);
    max-width: 1440px;
    margin: 0 auto;
}

/* ===== TIPOGRAFIA ===== */
h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-700);
}

.subtitulo {
    color: var(--gray-500);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* ===== CARDS ===== */
.card {
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--gray-200);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-title i {
    color: var(--primary);
}

/* ===== BOTÕES ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    font-family: inherit;
    line-height: 1.5;
}

.btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--primary);
    color: #FFFFFF;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

.btn-success {
    background: var(--success);
    color: #FFFFFF;
}

.btn-success:hover {
    background: #16A34A;
}

.btn-danger {
    background: var(--danger);
    color: #FFFFFF;
}

.btn-danger:hover {
    background: #DC2626;
}

.btn-warning {
    background: var(--warning);
    color: #FFFFFF;
}

.btn-warning:hover {
    background: #D97706;
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--gray-300);
    color: var(--gray-600);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-sm {
    padding: 4px 12px;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 1rem;
}

.btn-icon {
    padding: 8px;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ===== BADGES ===== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 2px 12px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.5;
}

.badge-primary {
    background: var(--primary-bg);
    color: var(--primary);
}

.badge-success {
    background: var(--success-bg);
    color: var(--success);
}

.badge-danger {
    background: var(--danger-bg);
    color: var(--danger);
}

.badge-warning {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge-info {
    background: var(--info-bg);
    color: var(--info);
}

.badge-gray {
    background: var(--gray-100);
    color: var(--gray-600);
}

/* ===== TABELAS ===== */
.table-wrapper {
    overflow-x: auto;
    margin: 0 -4px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

table thead {
    background: var(--gray-50);
    border-bottom: 2px solid var(--gray-200);
}

table thead th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--gray-600);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
    position: sticky;
    top: 0;
    background: var(--gray-50);
    z-index: 10;
}

table tbody tr {
    border-bottom: 1px solid var(--gray-100);
    transition: background var(--transition-fast);
}

table tbody tr:hover {
    background: var(--gray-50);
}

table tbody td {
    padding: 12px 16px;
    vertical-align: middle;
    color: var(--gray-700);
}

table .avatar-cell {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

table .avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--gray-200);
    flex-shrink: 0;
}

table .avatar-fallback {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-bg);
    color: var(--primary);
    font-weight: 600;
    font-size: 0.75rem;
    flex-shrink: 0;
}

table .actions {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

/* ===== FORMULÁRIOS ===== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
}

.form-control {
    width: 100%;
    padding: 8px 12px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--gray-900);
    background: #FFFFFF;
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

.form-control::placeholder {
    color: var(--gray-400);
}

.form-control:disabled {
    background: var(--gray-50);
    cursor: not-allowed;
}

.form-control.error {
    border-color: var(--danger);
}

.form-control.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-text {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: var(--spacing-xs);
}

.form-helper {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xs);
    flex-wrap: wrap;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364758B' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

/* ===== ALERTAS ===== */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
}

.alert-icon {
    flex-shrink: 0;
    margin-top: 2px;
}

.alert-success {
    background: var(--success-bg);
    color: #166534;
    border: 1px solid #BBF7D0;
}

.alert-danger {
    background: var(--danger-bg);
    color: #991B1B;
    border: 1px solid #FECACA;
}

.alert-warning {
    background: var(--warning-bg);
    color: #92400E;
    border: 1px solid #FDE68A;
}

.alert-info {
    background: var(--primary-bg);
    color: #1E40AF;
    border: 1px solid #BFDBFE;
}

/* ===== GRID ===== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ===== RESPONSIVIDADE ===== */
@media (max-width: 1200px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .admin-main {
        margin-left: 0 !important;
    }
}

@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .admin-content {
        padding: var(--spacing-md);
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    table {
        font-size: 0.75rem;
    }
    
    table thead th,
    table tbody td {
        padding: 8px 12px;
    }
}

@media (max-width: 480px) {
    .admin-content {
        padding: var(--spacing-sm);
    }
    
    .card {
        padding: var(--spacing-sm);
        border-radius: var(--radius-md);
    }
}

/* ===== UTILITÁRIOS ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray-500); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }
.flex-wrap { flex-wrap: wrap; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.relative { position: relative; }
.absolute { position: absolute; }

/* ==============================================================
   HEADER (admin_header.php)
   ============================================================== */
/* ===== HEADER STYLES ===== */
.admin-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #FFFFFF;
    border-bottom: 1px solid var(--gray-200);
    padding: 0 var(--spacing-lg);
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    backdrop-filter: blur(8px);
    background: rgba(255, 255, 255, 0.95);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    min-width: 0;
}

.header-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--gray-600);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.header-menu-btn:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

/* Breadcrumb */
.breadcrumb {
    font-size: 0.875rem;
}

.breadcrumb ol {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    list-style: none;
    padding: 0;
    margin: 0;
    flex-wrap: wrap;
}

.breadcrumb li:not(:last-child)::after {
    content: '/';
    margin-left: var(--spacing-sm);
    color: var(--gray-400);
}

.breadcrumb a {
    color: var(--gray-500);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--primary);
}

.breadcrumb li[aria-current="page"] {
    color: var(--gray-800);
    font-weight: 500;
}

/* Header Right */
.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

/* Search */
.header-search {
    position: relative;
}

.search-form {
    display: flex;
    align-items: center;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border: 1.5px solid transparent;
    transition: all var(--transition-fast);
}

.search-form:focus-within {
    border-color: var(--primary);
    background: #FFFFFF;
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

.search-input {
    border: none;
    background: transparent;
    padding: 6px 12px;
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--gray-800);
    width: 180px;
    outline: none;
}

.search-input::placeholder {
    color: var(--gray-400);
}

.search-btn {
    background: none;
    border: none;
    color: var(--gray-400);
    padding: 6px 12px 6px 4px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.search-btn:hover {
    color: var(--primary);
}

/* Datetime */
.header-datetime {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.75rem;
    color: var(--gray-500);
    white-space: nowrap;
    padding: 0 var(--spacing-sm);
}

.header-datetime i {
    font-size: 0.75rem;
}

/* Header Buttons */
.header-btn {
    background: none;
    border: none;
    color: var(--gray-500);
    font-size: 1rem;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.header-btn:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.header-btn:active {
    transform: scale(0.95);
}

/* Notifications */
.header-notifications {
    position: relative;
}

.notification-btn {
    position: relative;
}

.notification-dot {
    position: absolute;
    top: 2px;
    right: 2px;
    background: var(--danger);
    color: #FFFFFF;
    font-size: 0.5625rem;
    font-weight: 600;
    min-width: 18px;
    height: 18px;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
}

.notification-dropdown,
.profile-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    min-width: 320px;
    max-width: 420px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-base);
    z-index: 1000;
}

.notification-dropdown.show,
.profile-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.dropdown-title {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--gray-800);
}

.dropdown-link {
    font-size: 0.75rem;
    color: var(--primary);
    text-decoration: none;
}

.dropdown-link:hover {
    text-decoration: underline;
}

.dropdown-body {
    max-height: 360px;
    overflow-y: auto;
    padding: 8px;
}

.notification-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) 0;
    color: var(--gray-400);
}

.notification-empty i {
    font-size: 2rem;
}

.notification-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 12px;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--gray-700);
    transition: all var(--transition-fast);
}

.notification-item:hover {
    background: var(--gray-50);
}

.notification-icon {
    flex-shrink: 0;
}

.notification-icon.success { color: var(--success); }
.notification-icon.danger { color: var(--danger); }
.notification-icon.warning { color: var(--warning); }
.notification-icon.info { color: var(--primary); }

.notification-text {
    font-size: 0.875rem;
}

.notification-time {
    display: block;
    font-size: 0.6875rem;
    color: var(--gray-400);
    margin-top: 2px;
}

/* Profile */
.header-profile {
    position: relative;
}

.profile-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 8px 4px 4px;
    border-radius: 9999px;
    transition: all var(--transition-fast);
    color: var(--gray-700);
}

.profile-btn:hover {
    background: var(--gray-100);
}

.profile-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--primary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-initial {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--primary);
    text-transform: uppercase;
}

.profile-avatar.large {
    width: 48px;
    height: 48px;
}

.avatar-initial.large {
    font-size: 1.25rem;
}

.profile-name {
    font-size: 0.875rem;
    font-weight: 500;
    display: none;
}

.profile-arrow {
    font-size: 0.625rem;
    color: var(--gray-400);
    transition: transform var(--transition-fast);
}

.profile-btn:hover .profile-arrow {
    transform: rotate(180deg);
}

.profile-dropdown {
    min-width: 240px;
    right: 0;
}

.profile-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.profile-name-large {
    font-weight: 600;
    color: var(--gray-800);
    font-size: 0.875rem;
}

.profile-email {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 8px 12px;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--gray-700);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--gray-100);
}

.dropdown-item.danger {
    color: var(--danger);
}

.dropdown-item.danger:hover {
    background: var(--danger-bg);
}

.dropdown-item i {
    width: 18px;
    text-align: center;
    font-size: 0.875rem;
}

.dropdown-divider {
    border: none;
    border-top: 1px solid var(--gray-200);
    margin: 8px 0;
}

/* ===== RESPONSIVE ===== */
@media (min-width: 993px) {
    .profile-name {
        display: inline;
    }
}

@media (max-width: 992px) {
    .header-menu-btn {
        display: block;
    }
    
    .search-input {
        width: 120px;
    }
    
    .header-datetime {
        display: none;
    }
    
    .profile-name {
        display: none;
    }
}

@media (max-width: 768px) {
    .admin-header {
        padding: 0 var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .search-input {
        width: 80px;
    }
    
    .breadcrumb {
        font-size: 0.75rem;
    }
    
    .notification-dropdown {
        min-width: 280px;
        right: -60px;
    }
}

@media (max-width: 480px) {
    .admin-header {
        padding: 0 var(--spacing-sm);
        height: 56px;
    }
    
    .search-input {
        width: 60px;
    }
    
    .search-input:focus {
        width: 120px;
    }
    
    .header-btn {
        padding: 4px 8px;
        font-size: 0.875rem;
    }
    
    .notification-dropdown {
        min-width: 260px;
        right: -80px;
    }
}

@media (max-width: 380px) {
    .search-input {
        width: 40px;
    }
    
    .search-input:focus {
        width: 100px;
    }
}

/* ==============================================================
   SIDEBAR (admin_sidebar.php)
   ============================================================== */
/* ===== SIDEBAR STYLES ===== */
.admin-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: #FFFFFF;
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform var(--transition-base), width var(--transition-base);
    overflow: hidden;
}

.admin-sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.admin-sidebar.collapsed .logo-text,
.admin-sidebar.collapsed .nav-text,
.admin-sidebar.collapsed .nav-badge {
    display: none;
}

.admin-sidebar.collapsed .sidebar-logo {
    justify-content: center;
}

.admin-sidebar.collapsed .logo-icon {
    height: 28px;
    max-width: 36px;
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    min-height: var(--header-height);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--gray-900);
}

.logo-icon {
    height: 32px;
    width: auto;
    max-width: 140px;
    object-fit: contain;
    display: block;
}

.logo-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-700);
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--gray-500);
    font-size: 1.125rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.sidebar-toggle:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 12px 8px;
}

.nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-list.nav-bottom {
    margin-top: auto;
    border-top: 1px solid var(--gray-200);
    padding-top: 8px;
}

.nav-item {
    margin-bottom: 2px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    color: var(--gray-600);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    flex-shrink: 0;
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.nav-text {
    flex: 1;
    white-space: nowrap;
}

.nav-badge {
    background: var(--gray-200);
    color: var(--gray-600);
    font-size: 0.625rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 9999px;
    flex-shrink: 0;
}

.nav-badge.danger {
    background: var(--danger-bg);
    color: var(--danger);
}

.nav-item.active .nav-link {
    background: var(--primary-bg);
    color: var(--primary);
}

.nav-item.active .nav-link i {
    color: var(--primary);
}

.nav-link:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

.nav-link:hover i {
    color: var(--gray-600);
}

.nav-item.active .nav-link:hover {
    background: var(--primary-bg);
    color: var(--primary);
}

/* ===== SIDEBAR OVERLAY (mobile) ===== */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.sidebar-overlay.show {
    opacity: 1;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
    .admin-sidebar {
        transform: translateX(-100%);
        width: 280px !important;
    }
    
    .admin-sidebar.open {
        transform: translateX(0);
    }
    
    .admin-sidebar.open .logo-text,
    .admin-sidebar.open .nav-text,
    .admin-sidebar.open .nav-badge {
        display: inline !important;
    }
    
    .admin-sidebar.open .sidebar-logo {
        justify-content: flex-start !important;
    }
    
    .sidebar-overlay.show {
        display: block;
    }
}

@media (max-width: 480px) {
    .admin-sidebar {
        width: 100% !important;
        max-width: 320px;
    }
}

/* ==============================================================
   MODAL DE CONFIRMAÇÃO (data-confirm, ver admin.js initConfirmationDialogs)
   ============================================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    padding: var(--spacing-md);
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal-caixa {
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
    max-width: 380px;
    width: 100%;
    text-align: center;
    transform: translateY(12px);
    transition: transform var(--transition-base);
}

.modal-overlay.show .modal-caixa {
    transform: translateY(0);
}

.modal-icon-confirm {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--warning-bg);
    color: var(--warning);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin: 0 auto var(--spacing-md);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.modal-icon-confirm.modal-icon-confirm-danger {
    background: var(--danger-bg);
    color: var(--danger);
}

.modal-etapa {
    display: none;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-400);
    margin-bottom: var(--spacing-xs);
}

.modal-mensagem {
    font-size: 0.9375rem;
    color: var(--gray-700);
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
}

.modal-botoes {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

.modal-botoes .btn {
    flex: 1;
}

@media (max-width: 480px) {
    .modal-caixa {
        padding: var(--spacing-lg);
    }
}

/* ==============================================================
   LISTAGENS COM FILTRO/BUSCA/PAGINAÇÃO (reaproveitado por
   admin_usuarios.php, admin_posts.php e outras páginas de lista)
   ============================================================== */
.filtros-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    align-items: flex-end;
    margin-bottom: var(--spacing-lg);
}

.filtros-bar .form-group {
    margin-bottom: 0;
}

.filtros-busca {
    flex: 1;
    min-width: 220px;
}

.filtros-chips {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.filtro-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 6px 14px;
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 500;
    text-decoration: none;
    color: var(--gray-600);
    background: var(--gray-100);
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.filtro-chip:hover {
    background: var(--gray-200);
}

.filtro-chip.active {
    background: var(--primary-bg);
    color: var(--primary);
    border-color: var(--primary-light);
}

.filtro-chip .count {
    font-size: 0.6875rem;
    opacity: 0.75;
}

.form-acao-inline {
    display: inline;
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 8px;
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    color: var(--gray-600);
    text-decoration: none;
    border: 1px solid var(--gray-200);
    transition: all var(--transition-fast);
}

.pagination a:hover {
    background: var(--gray-100);
}

.pagination .current {
    background: var(--primary);
    color: #FFFFFF;
    border-color: var(--primary);
}

.pagination .disabled {
    opacity: 0.4;
    pointer-events: none;
}

.resultado-info {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-bottom: var(--spacing-md);
}

.empty-state-lista {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    color: var(--gray-400);
}

.empty-state-lista i {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--spacing-md);
}

/* ==============================================================
   GRÁFICO DE BARRAS (CSS-only, reaproveitado em index.php,
   admin_estatisticas.php e outras páginas com gráfico)
   ============================================================== */
.chart-container {
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--gray-200);
    overflow-x: auto;
}

.chart-bar {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 160px;
    gap: 4px;
    padding-top: var(--spacing-md);
}

.chart-bar-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.chart-bar-value {
    width: 100%;
    background: var(--primary);
    border-radius: 4px 4px 0 0;
    min-height: 4px;
    transition: height 0.6s ease;
    position: relative;
}

.chart-bar-value:hover {
    opacity: 0.8;
}

.chart-bar-label {
    font-size: 0.625rem;
    color: var(--gray-500);
    font-weight: 500;
}

.chart-bar-value .tooltip {
    display: none;
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-900);
    color: #FFFFFF;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.625rem;
    white-space: nowrap;
}

.chart-bar-value:hover .tooltip {
    display: block;
}

.chart-legend {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.chart-legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.75rem;
    color: var(--gray-600);
}

.chart-legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

/* ==============================================================
   LINK DE USUÁRIO EM CÉLULA DE TABELA (avatar+nome clicável pro perfil)
   ============================================================== */
.usuario-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
}

.usuario-link-nome {
    color: var(--gray-900);
}

.usuario-link:hover .usuario-link-nome {
    color: var(--primary);
}