/* ============================================
   ESTOQUE-CX — Design System CSS
   Indústria de Embalagens Plásticas
   ============================================ */

/* === Google Fonts === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* === CSS Custom Properties === */
:root {
    /* Cores Primárias — Azul Industrial */
    --primary-50:  #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    /* Cores de Status */
    --success-50:  #f0fdf4;
    --success-100: #dcfce7;
    --success-500: #22c55e;
    --success-600: #16a34a;
    --success-700: #15803d;

    --warning-50:  #fffbeb;
    --warning-100: #fef3c7;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --warning-700: #b45309;

    --danger-50:  #fef2f2;
    --danger-100: #fee2e2;
    --danger-500: #ef4444;
    --danger-600: #dc2626;
    --danger-700: #b91c1c;

    --info-50:  #f0f9ff;
    --info-100: #e0f2fe;
    --info-500: #0ea5e9;
    --info-600: #0284c7;

    /* Neutros */
    --gray-50:  #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Background e Superfície */
    --bg-body:    #f0f2f5;
    --bg-surface: #ffffff;
    --bg-surface-hover: #f9fafb;
    --bg-sidebar: #1e293b;
    --bg-sidebar-hover: #334155;
    --bg-sidebar-active: #0f172a;
    --bg-header:  #ffffff;

    /* Texto */
    --text-primary:   #111827;
    --text-secondary: #6b7280;
    --text-muted:     #9ca3af;
    --text-inverse:   #ffffff;
    --text-sidebar:   #cbd5e1;
    --text-sidebar-active: #ffffff;

    /* Bordas */
    --border-color: #e5e7eb;
    --border-focus: #3b82f6;
    
    /* 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 -2px rgba(0,0,0,0.1);
    --shadow-lg:  0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl:  0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);

    /* Layout */
    --sidebar-width: 260px;
    --sidebar-collapsed: 68px;
    --header-height: 64px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    /* Transições */
    --transition: all 0.2s ease;
    --transition-slow: all 0.3s ease;
}

/* === Reset & Base === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--primary-600);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--primary-700);
}

img {
    max-width: 100%;
    height: auto;
}

/* === Layout Principal === */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

.app-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding-top: var(--header-height);
    transition: var(--transition-slow);
}

.app-content {
    padding: 24px;
    max-width: 1400px;
    margin: 0 auto;
}

/* === Sidebar === */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transition: var(--transition-slow);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-brand {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    min-height: var(--header-height);
}

.sidebar-brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.sidebar-brand-text {
    color: var(--text-inverse);
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.sidebar-brand-text small {
    display: block;
    font-size: 11px;
    font-weight: 400;
    color: var(--text-sidebar);
    letter-spacing: 0;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 0;
}

.sidebar-section {
    padding: 0 12px;
    margin-bottom: 8px;
}

.sidebar-section-title {
    font-size: 10px;
    font-weight: 700;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 12px 12px 6px;
}

.sidebar-section-title.sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    padding: 10px 12px;
    margin: 0;
    border-radius: var(--border-radius);
    transition: var(--transition);
    user-select: none;
}

.sidebar-section-title.sidebar-toggle:hover {
    background: rgba(255,255,255,0.05);
    color: var(--gray-300);
}

.sidebar-chevron {
    font-size: 14px;
    font-weight: 700;
    transition: transform 0.25s ease;
    display: inline-block;
}

.sidebar-toggle.open .sidebar-chevron {
    transform: rotate(90deg);
}

.sidebar-section-links {
    display: none;
    padding-left: 4px;
    overflow: hidden;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    color: var(--text-sidebar);
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.sidebar-link:hover {
    background: var(--bg-sidebar-hover);
    color: var(--text-sidebar-active);
}

.sidebar-link.active {
    background: var(--primary-600);
    color: var(--text-sidebar-active);
    font-weight: 600;
}

.sidebar-link-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.sidebar-link-badge {
    margin-left: auto;
    background: var(--danger-500);
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    border-radius: var(--border-radius);
    color: var(--text-sidebar);
    transition: var(--transition);
}

.sidebar-user:hover {
    background: var(--bg-sidebar-hover);
}

.sidebar-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary-600);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    color: white;
    flex-shrink: 0;
}

.sidebar-user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-inverse);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 11px;
    color: var(--text-sidebar);
    text-transform: capitalize;
}

/* === Header === */
.header {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    height: var(--header-height);
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 999;
    transition: var(--transition-slow);
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.header-breadcrumb {
    font-size: 13px;
    color: var(--text-secondary);
}

.header-breadcrumb a {
    color: var(--text-secondary);
}
.header-breadcrumb a:hover {
    color: var(--primary-600);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 4px;
    color: var(--text-primary);
}

/* === Cards === */
.card {
    background: var(--bg-surface);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border-color);
    background: var(--gray-50);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

/* === Stats Cards === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-surface);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.stat-card-icon.blue    { background: var(--primary-100); color: var(--primary-600); }
.stat-card-icon.green   { background: var(--success-100); color: var(--success-600); }
.stat-card-icon.yellow  { background: var(--warning-100); color: var(--warning-600); }
.stat-card-icon.red     { background: var(--danger-100);  color: var(--danger-600); }
.stat-card-icon.cyan    { background: var(--info-100);    color: var(--info-600); }

.stat-card-info {
    flex: 1;
}

.stat-card-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.stat-card-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-card-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* === Botões === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    text-decoration: none;
    line-height: 1.4;
}

.btn:active {
    transform: scale(0.97);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
    border-radius: var(--border-radius-lg);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

.btn-icon {
    padding: 10px;
    width: 40px;
    height: 40px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    color: white;
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    box-shadow: 0 4px 8px rgba(37, 99, 235, 0.4);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, var(--success-500), var(--success-700));
    color: white;
    box-shadow: 0 2px 4px rgba(22, 163, 74, 0.3);
}
.btn-success:hover {
    background: linear-gradient(135deg, var(--success-600), var(--success-700));
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-500), var(--warning-700));
    color: white;
}
.btn-warning:hover {
    background: linear-gradient(135deg, var(--warning-600), var(--warning-700));
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-500), var(--danger-700));
    color: white;
}
.btn-danger:hover {
    background: linear-gradient(135deg, var(--danger-600), var(--danger-700));
    color: white;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
}
.btn-outline:hover {
    border-color: var(--primary-500);
    color: var(--primary-600);
    background: var(--primary-50);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}
.btn-ghost:hover {
    background: var(--gray-100);
    color: var(--text-primary);
}

/* === Formulários === */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-label .required {
    color: var(--danger-500);
    margin-left: 2px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-surface);
    transition: var(--transition);
    line-height: 1.5;
}

.form-control:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-control:disabled {
    background: var(--gray-100);
    color: var(--text-secondary);
    cursor: not-allowed;
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236b7280' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-error {
    font-size: 12px;
    color: var(--danger-600);
    margin-top: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

/* === Tabelas === */
.table-container {
    overflow-x: auto;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.table thead th {
    background: var(--gray-50);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
    position: sticky;
    top: 0;
    z-index: 1;
}

.table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background: var(--bg-surface-hover);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* === Badges / Tags === */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.badge-primary { background: var(--primary-100); color: var(--primary-700); }
.badge-success { background: var(--success-100); color: var(--success-700); }
.badge-warning { background: var(--warning-100); color: var(--warning-700); }
.badge-danger  { background: var(--danger-100);  color: var(--danger-700); }
.badge-info    { background: var(--info-100);     color: var(--info-600); }
.badge-gray    { background: var(--gray-100);     color: var(--gray-600); }

/* PA / SE / MP / IN */
.badge-pa { background: var(--success-100); color: var(--success-700); }
.badge-se { background: var(--warning-100); color: var(--warning-700); }
.badge-mp { background: var(--primary-100); color: var(--primary-700); }
.badge-in { background: var(--info-100); color: var(--info-600); }
.badge-ot { background: var(--gray-100); color: var(--gray-600); }

/* === Toast / Notificações === */
.toast-container {
    position: fixed;
    top: 80px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    background: var(--bg-surface);
    border-radius: var(--border-radius);
    padding: 14px 20px;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary-500);
    display: flex;
    align-items: center;
    gap: 12px;
    pointer-events: all;
    animation: toastSlideIn 0.3s ease;
    min-width: 300px;
    max-width: 450px;
}

.toast.success { border-left-color: var(--success-500); }
.toast.error   { border-left-color: var(--danger-500); }
.toast.warning { border-left-color: var(--warning-500); }

.toast-icon { font-size: 20px; flex-shrink: 0; }
.toast-message { font-size: 14px; color: var(--text-primary); flex: 1; }
.toast-close {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: var(--text-muted);
    padding: 4px;
}

@keyframes toastSlideIn {
    from { transform: translateX(100%); opacity: 0; }
    to   { transform: translateX(0); opacity: 1; }
}

@keyframes toastSlideOut {
    from { transform: translateX(0); opacity: 1; }
    to   { transform: translateX(100%); opacity: 0; }
}

/* === Modal === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.modal {
    background: var(--bg-surface);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9) translateY(20px);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 18px;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-muted);
    padding: 4px;
    line-height: 1;
}
.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* === Paginação === */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 20px;
}

.pagination-btn {
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.pagination-btn:hover {
    background: var(--primary-50);
    border-color: var(--primary-300);
    color: var(--primary-600);
}

.pagination-btn.active {
    background: var(--primary-600);
    color: white;
    border-color: var(--primary-600);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-info {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 0 12px;
}

/* === Barra de Busca / Filtros === */
.search-bar {
    position: relative;
    max-width: 360px;
}

.search-bar input {
    padding-left: 40px;
}

.search-bar-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 16px;
    pointer-events: none;
}

.filters-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--gray-50);
    border-radius: var(--border-radius-lg);
    margin-bottom: 16px;
}

/* === Empty State === */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state-icon {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.empty-state-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* === Page Header === */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
}

.page-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.page-header-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    background: var(--primary-100);
    color: var(--primary-600);
}

.page-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.page-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
}

/* === Login Page === */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-800) 0%, var(--primary-900) 50%, #0f172a 100%);
    padding: 20px;
}

.login-card {
    background: var(--bg-surface);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 40px;
    width: 100%;
    max-width: 420px;
    animation: loginFadeIn 0.5s ease;
}

@keyframes loginFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    border-radius: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 16px;
    box-shadow: 0 8px 16px rgba(37, 99, 235, 0.3);
}

.login-logo h1 {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.login-logo p {
    font-size: 14px;
    color: var(--text-secondary);
}

.login-form .form-group {
    margin-bottom: 24px;
}

.login-form .btn {
    width: 100%;
    padding: 14px;
    font-size: 16px;
}

.login-error {
    background: var(--danger-50);
    border: 1px solid var(--danger-200);
    color: var(--danger-700);
    padding: 12px 16px;
    border-radius: var(--border-radius);
    font-size: 14px;
    margin-bottom: 20px;
    display: none;
}

.login-error.visible {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* === Utilities === */
.text-center   { text-align: center; }
.text-right    { text-align: right; }
.text-muted    { color: var(--text-secondary); }
.text-success  { color: var(--success-600); }
.text-danger   { color: var(--danger-600); }
.text-warning  { color: var(--warning-600); }

.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 24px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 16px; }

.w-100 { width: 100%; }

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* === Loading Spinner === */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top: 4px solid var(--primary-500);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
}

/* === Responsive === */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .app-main {
        margin-left: 0;
    }
    .header {
        left: 0;
    }
    .btn-menu-toggle {
        display: flex;
    }
}

@media (max-width: 640px) {
    .app-content {
        padding: 16px;
    }
    .card-body {
        padding: 16px;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
}