/* ============================================================
   INVENTORY UPDATER — "Vibe" Design System
   Modern, fresh, clean with a vibrant professional palette
   ============================================================ */

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

/* ---------- CSS Custom Properties ---------- */
:root {
    /* Primary palette — Vibrant Teal */
    --primary-50: #e0f7fa;
    --primary-100: #b2ebf2;
    --primary-200: #80deea;
    --primary-300: #4dd0e1;
    --primary-400: #26c6da;
    --primary-500: #00bcd4;
    --primary-600: #00acc1;
    --primary-700: #0097a7;
    --primary-800: #00838f;
    --primary-900: #006064;

    /* Accent — Warm Coral */
    --accent-50: #fff3e0;
    --accent-100: #ffe0b2;
    --accent-200: #ffcc80;
    --accent-300: #ffb74d;
    --accent-400: #ffa726;
    --accent-500: #ff9800;
    --accent-600: #fb8c00;
    --accent-700: #f57c00;

    /* Greyscale */
    --grey-50: #fafafa;
    --grey-100: #f5f5f5;
    --grey-200: #eeeeee;
    --grey-300: #e0e0e0;
    --grey-400: #bdbdbd;
    --grey-500: #9e9e9e;
    --grey-600: #757575;
    --grey-700: #616161;
    --grey-800: #424242;
    --grey-900: #212121;

    /* Semantic colours */
    --success: #10b981;
    --success-bg: #d1fae5;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --error: #ef4444;
    --error-bg: #fee2e2;
    --info: #3b82f6;
    --info-bg: #dbeafe;

    /* Surface */
    --bg-body: #f0f4f8;
    --bg-card: #ffffff;
    --bg-sidebar: #0f172a;
    --bg-sidebar-hover: #1e293b;
    --bg-sidebar-active: rgba(0, 188, 212, 0.15);
    --text-sidebar: #94a3b8;
    --text-sidebar-active: #ffffff;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.625rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Layout */
    --sidebar-width: 260px;
    --sidebar-collapsed: 72px;
    --header-height: 0px;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--primary-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--primary-800);
}

/* ---------- Layout: Sidebar + Main ---------- */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 1000;
    transition: width var(--transition-normal);
    overflow: hidden;
}

.sidebar-brand {
    padding: var(--space-xl) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.3);
}

.sidebar-brand-text {
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
}

.sidebar-brand-sub {
    color: var(--text-sidebar);
    font-size: 0.7rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* Nav items */
.sidebar-nav {
    flex: 1;
    padding: var(--space-lg) var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 0.75rem var(--space-md);
    border-radius: var(--radius-md);
    color: var(--text-sidebar);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
    position: relative;
}

.nav-item:hover {
    background: var(--bg-sidebar-hover);
    color: #e2e8f0;
}

.nav-item.active {
    background: var(--bg-sidebar-active);
    color: var(--primary-300);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--primary-400);
    border-radius: 0 4px 4px 0;
}

.nav-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
}

.nav-label {
    white-space: nowrap;
}

/* Sidebar footer */
.sidebar-footer {
    padding: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-sidebar);
    font-size: 0.85rem;
}

.sidebar-user-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--primary-700);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 0.8rem;
}

/* ---------- Main Content ---------- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--space-2xl);
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

/* Page header */
.page-header {
    margin-bottom: var(--space-2xl);
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: var(--space-xs);
}

/* ---------- Cards ---------- */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-xl);
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

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

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

.card-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ---------- Stat Cards ---------- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    transition: all var(--transition-normal);
    border: 1px solid rgba(0, 0, 0, 0.04);
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.stat-card.stat-primary::after { background: linear-gradient(90deg, var(--primary-400), var(--primary-600)); }
.stat-card.stat-success::after { background: linear-gradient(90deg, #34d399, var(--success)); }
.stat-card.stat-warning::after { background: linear-gradient(90deg, #fbbf24, var(--warning)); }
.stat-card.stat-error::after { background: linear-gradient(90deg, #f87171, var(--error)); }

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.stat-icon.icon-primary { background: var(--primary-50); color: var(--primary-600); }
.stat-icon.icon-success { background: var(--success-bg); color: var(--success); }
.stat-icon.icon-warning { background: var(--warning-bg); color: var(--warning); }
.stat-icon.icon-error { background: var(--error-bg); color: var(--error); }

.stat-info {
    flex: 1;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-top: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ---------- Tables ---------- */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-md);
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.875rem;
}

table thead th {
    background: var(--grey-50);
    padding: 0.75rem var(--space-md);
    text-align: left;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--grey-200);
    white-space: nowrap;
}

table tbody td {
    padding: 0.75rem var(--space-md);
    border-bottom: 1px solid var(--grey-100);
    color: var(--text-primary);
    vertical-align: middle;
}

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

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

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

/* ---------- Badges ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.badge-success {
    background: var(--success-bg);
    color: #065f46;
}
.badge-warning {
    background: var(--warning-bg);
    color: #92400e;
}
.badge-error {
    background: var(--error-bg);
    color: #991b1b;
}
.badge-info {
    background: var(--info-bg);
    color: #1e40af;
}
.badge-neutral {
    background: var(--grey-100);
    color: var(--grey-700);
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    display: inline-block;
}

.badge-success .badge-dot { background: var(--success); }
.badge-warning .badge-dot { background: var(--warning); }
.badge-error .badge-dot { background: var(--error); }
.badge-info .badge-dot { background: var(--info); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-weight: 600;
    font-size: 0.85rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.4;
}

.btn:hover {
    transform: translateY(-1px);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    color: #fff;
    box-shadow: 0 2px 8px rgba(0, 188, 212, 0.3);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.4);
    color: #fff;
}

.btn-secondary {
    background: var(--grey-100);
    color: var(--text-primary);
    border: 1px solid var(--grey-300);
}
.btn-secondary:hover {
    background: var(--grey-200);
    color: var(--text-primary);
}

.btn-success {
    background: linear-gradient(135deg, #34d399, var(--success));
    color: #fff;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, #f87171, var(--error));
    color: #fff;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.78rem;
}

.btn-lg {
    padding: 0.8rem 1.6rem;
    font-size: 0.95rem;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
}
.btn-ghost:hover {
    background: var(--grey-100);
    color: var(--text-primary);
}

/* ---------- Forms ---------- */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.form-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.65rem var(--space-md);
    border: 1.5px solid var(--grey-300);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 0.9rem;
    color: var(--text-primary);
    background: #fff;
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.12);
}

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.form-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    border-radius: var(--radius-sm);
    accent-color: var(--primary-500);
    cursor: pointer;
}

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

/* ---------- Alerts / Flash Messages ---------- */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    animation: slideDown 0.3s ease;
}

.alert-success {
    background: var(--success-bg);
    color: #065f46;
    border-left: 4px solid var(--success);
}
.alert-error {
    background: var(--error-bg);
    color: #991b1b;
    border-left: 4px solid var(--error);
}
.alert-warning {
    background: var(--warning-bg);
    color: #92400e;
    border-left: 4px solid var(--warning);
}
.alert-info {
    background: var(--info-bg);
    color: #1e40af;
    border-left: 4px solid var(--info);
}

/* ---------- Modals ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 560px;
    max-height: 85vh;
    overflow-y: auto;
    padding: var(--space-2xl);
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-normal);
}

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

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

.modal-title {
    font-size: 1.15rem;
    font-weight: 700;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    border: none;
    background: var(--grey-100);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: background var(--transition-fast);
}
.modal-close:hover {
    background: var(--grey-200);
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: var(--space-2xl) var(--space-xl);
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.empty-state-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.empty-state-text {
    font-size: 0.9rem;
    max-width: 400px;
    margin: 0 auto var(--space-lg);
}

/* ---------- Pagination ---------- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    margin-top: var(--space-xl);
}

.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.pagination a {
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--grey-200);
}
.pagination a:hover {
    background: var(--primary-50);
    border-color: var(--primary-200);
    color: var(--primary-700);
}

.pagination .active {
    background: var(--primary-500);
    color: #fff;
    border: 1px solid var(--primary-500);
}

/* ---------- Tabs ---------- */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--grey-200);
    margin-bottom: var(--space-xl);
}

.tab {
    padding: 0.75rem var(--space-lg);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    font-family: var(--font-family);
}

.tab:hover {
    color: var(--primary-600);
}

.tab.active {
    color: var(--primary-600);
    border-bottom-color: var(--primary-500);
}

.tab-content {
    display: none;
}
.tab-content.active {
    display: block;
}

/* ---------- Search Bar ---------- */
.search-bar {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.search-input-group {
    position: relative;
    flex: 1;
    min-width: 250px;
}

.search-input-group .search-icon {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1rem;
}

.search-input-group input {
    width: 100%;
    padding: 0.65rem var(--space-md) 0.65rem 2.5rem;
    border: 1.5px solid var(--grey-300);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 0.9rem;
    outline: none;
    transition: all var(--transition-fast);
}

.search-input-group input:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.12);
}

/* ---------- Toolbar ---------- */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.toolbar-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* ---------- Column Mapping UI ---------- */
.mapping-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--space-md);
    align-items: center;
}

.mapping-arrow {
    color: var(--primary-500);
    font-size: 1.5rem;
    font-weight: 700;
}

/* ---------- Help section ---------- */
.help-section {
    margin-bottom: var(--space-xl);
}

.help-section-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.help-section-header:hover {
    background: var(--grey-50);
}

.help-section-icon {
    font-size: 1.5rem;
}

.help-section-title {
    font-size: 1.05rem;
    font-weight: 600;
}

.help-section-body {
    padding: 0 var(--space-lg) var(--space-lg) 3.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.help-section-body h4 {
    color: var(--text-primary);
    margin: var(--space-md) 0 var(--space-sm);
}

.help-section-body ul, .help-section-body ol {
    padding-left: var(--space-xl);
    margin: var(--space-sm) 0;
}

.help-section-body li {
    margin-bottom: var(--space-xs);
}

.help-section-body code {
    background: var(--grey-100);
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
    font-size: 0.85em;
}

/* ---------- Animations ---------- */
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* ---------- Toast Notifications ---------- */
.toast-container {
    position: fixed;
    top: var(--space-xl);
    right: var(--space-xl);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    animation: slideDown 0.3s ease;
    min-width: 300px;
    max-width: 450px;
}

/* ---------- Utility Classes ---------- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-error { color: var(--error); }
.text-warning { color: var(--warning); }
.text-sm { font-size: 0.8rem; }
.text-xs { font-size: 0.7rem; }
.font-mono { font-family: 'JetBrains Mono', monospace; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.w-full { width: 100%; }
.hidden { display: none !important; }

/* ---------- Login Page ---------- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 188, 212, 0.15), transparent 70%);
    top: -200px;
    right: -100px;
}

.login-page::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 152, 0, 0.1), transparent 70%);
    bottom: -150px;
    left: -100px;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    padding: var(--space-2xl) var(--space-2xl);
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
}

.login-brand {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.login-brand-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    background: linear-gradient(135deg, var(--primary-400), var(--primary-700));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 8px 24px rgba(0, 188, 212, 0.3);
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: var(--space-xs);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
        padding: var(--space-lg);
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .search-bar {
        flex-direction: column;
    }
}