/* Top Gear Engineering - Parts Management System */

/* ============================================
   CSS Variables
   ============================================ */
:root {
    /* Colors */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #64748b;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #0ea5e9;

    /* Neutrals */
    --white: #ffffff;
    --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;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Courier New', monospace;

    /* 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: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

    /* Layout */
    --sidebar-width: 250px;
    --header-height: 60px;
}

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

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

body {
    font-family: var(--font-family);
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--gray-800);
    background-color: var(--gray-100);
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    color: var(--gray-900);
}

h1 { font-size: 1.875rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

/* ============================================
   Utilities
   ============================================ */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray-500); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-center { display: flex; justify-content: center; align-items: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.15s ease;
}

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

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-dark);
}

.btn-secondary {
    background-color: var(--white);
    border-color: var(--gray-300);
    color: var(--gray-700);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--gray-50);
}

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

.btn-danger:hover:not(:disabled) {
    background-color: #dc2626;
}

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

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.btn-full {
    width: 100%;
}

.btn-icon {
    padding: 0.5rem;
}

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

.form-group label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background-color: var(--white);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input.error,
.form-group select.error {
    border-color: var(--danger);
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

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

.error-message {
    padding: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-md);
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-md);
    color: var(--danger);
    font-size: 0.875rem;
}

.success-message {
    padding: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-md);
    background-color: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: var(--radius-md);
    color: var(--success);
    font-size: 0.875rem;
}

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

.login-container {
    width: 100%;
    max-width: 400px;
    padding: var(--space-lg);
}

.login-box {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
}

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

.login-header h1 {
    font-size: 1.5rem;
    color: var(--gray-900);
}

.login-header p {
    color: var(--gray-500);
    margin-top: var(--space-xs);
}

.login-footer {
    text-align: center;
    margin-top: var(--space-lg);
    color: var(--gray-400);
    font-size: 0.75rem;
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--gray-900);
    color: var(--white);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 100;
}

.sidebar-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--gray-700);
}

.sidebar-header h1 {
    font-size: 1rem;
    color: var(--white);
}

.sidebar-header p {
    font-size: 0.75rem;
    color: var(--gray-400);
}

.sidebar-nav {
    padding: var(--space-md);
}

.nav-section {
    margin-bottom: var(--space-lg);
}

.nav-section-title {
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    padding: var(--space-sm) var(--space-md);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    text-decoration: none;
    transition: all 0.15s ease;
}

.nav-link:hover {
    background-color: var(--gray-800);
    color: var(--white);
    text-decoration: none;
}

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

.nav-link .badge {
    margin-left: auto;
    padding: 0.125rem 0.375rem;
    font-size: 0.625rem;
    font-weight: 600;
    background-color: var(--danger);
    border-radius: 9999px;
}

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

/* Header */
.header {
    height: var(--header-height);
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-lg);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.header-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background-color: var(--gray-100);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.user-menu:hover {
    background-color: var(--gray-200);
}

/* Page Content */
.page-content {
    padding: var(--space-lg);
}

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

.page-header h2 {
    font-size: 1.5rem;
}

/* ============================================
   Cards
   ============================================ */
.card {
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

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

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.card-body {
    padding: var(--space-lg);
}

.card-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--gray-200);
    background-color: var(--gray-50);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.stat-card {
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.stat-card .stat-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-top: var(--space-xs);
}

.stat-card .stat-change {
    font-size: 0.75rem;
    margin-top: var(--space-xs);
}

.stat-card .stat-change.positive { color: var(--success); }
.stat-card .stat-change.negative { color: var(--danger); }

/* ============================================
   Tables
   ============================================ */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th,
table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

table th {
    font-weight: 600;
    color: var(--gray-600);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background-color: var(--gray-50);
}

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

table tbody tr.clickable {
    cursor: pointer;
}

/* ============================================
   Badges & Status
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
}

.badge-primary {
    background-color: #dbeafe;
    color: #1e40af;
}

.badge-success {
    background-color: #dcfce7;
    color: #166534;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

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

/* Status badges */
.status-quote { background-color: #e0e7ff; color: #3730a3; }
.status-confirmed { background-color: #dbeafe; color: #1e40af; }
.status-picked { background-color: #fef3c7; color: #92400e; }
.status-shipped { background-color: #cffafe; color: #0e7490; }
.status-delivered { background-color: #dcfce7; color: #166534; }
.status-cancelled { background-color: #fee2e2; color: #991b1b; }

/* ============================================
   Modals
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--space-lg);
}

.modal {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-lg {
    max-width: 800px;
}

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

.modal-header h3 {
    font-size: 1.125rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-400);
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.modal-close:hover {
    color: var(--gray-600);
}

.modal-body {
    padding: var(--space-lg);
}

.modal-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
}

/* ============================================
   Search & Filters
   ============================================ */
.search-bar {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.search-input {
    flex: 1;
    position: relative;
}

.search-input input {
    width: 100%;
    padding: 0.5rem 0.75rem 0.5rem 2.5rem;
    font-size: 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
}

.search-input::before {
    content: "🔍";
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.875rem;
}

.filter-group {
    display: flex;
    gap: var(--space-sm);
}

.filter-group select {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background-color: var(--white);
}

/* ============================================
   Empty States
   ============================================ */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--gray-500);
}

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

.empty-state h3 {
    color: var(--gray-700);
    margin-bottom: var(--space-sm);
}

/* ============================================
   Loading States
   ============================================ */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
}

.spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   Alerts
   ============================================ */
.alert {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
}

.alert-info {
    background-color: #e0f2fe;
    border: 1px solid #7dd3fc;
    color: #0369a1;
}

.alert-warning {
    background-color: #fef3c7;
    border: 1px solid #fcd34d;
    color: #92400e;
}

.alert-danger {
    background-color: #fee2e2;
    border: 1px solid #fca5a5;
    color: #991b1b;
}

.alert-success {
    background-color: #dcfce7;
    border: 1px solid #86efac;
    color: #166534;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Navbar (Simple Top Navigation)
   ============================================ */
.navbar {
    background-color: var(--gray-900);
    color: var(--white);
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand a {
    color: var(--white);
    font-size: 1.125rem;
    font-weight: 600;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-xs);
}

.nav-menu li a {
    color: var(--gray-300);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.15s ease;
}

.nav-menu li a:hover {
    background-color: var(--gray-800);
    color: var(--white);
}

.nav-menu li a.active {
    background-color: var(--primary);
    color: var(--white);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--gray-400);
    font-size: 0.875rem;
}

/* ============================================
   Container
   ============================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-lg);
}

/* ============================================
   Grid Layouts
   ============================================ */
.grid {
    display: grid;
    gap: var(--space-md);
}

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

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

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

@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Card Improvements
   ============================================ */
.card {
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.card h3 {
    margin-bottom: var(--space-md);
}

.card hr {
    border: none;
    border-top: 1px solid var(--gray-200);
    margin: var(--space-md) 0;
}

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

.card-header-flex h3 {
    margin-bottom: 0;
}

/* ============================================
   Filters Bar
   ============================================ */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    align-items: center;
}

.filters .filter-group {
    flex: 1;
    min-width: 150px;
    max-width: 300px;
}

.filters .filter-group input,
.filters .filter-group select {
    width: 100%;
}

.form-control {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background-color: var(--white);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ============================================
   Pagination
   ============================================ */
.pagination {
    display: flex;
    justify-content: center;
    padding: var(--space-md);
    gap: var(--space-sm);
}

/* ============================================
   Modal Improvements
   ============================================ */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--space-lg);
}

.modal.open {
    display: flex;
}

.modal-content {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-large {
    max-width: 800px;
}

/* ============================================
   Form Actions
   ============================================ */
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--gray-200);
    margin-top: var(--space-lg);
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
    position: fixed;
    top: calc(var(--header-height) + var(--space-md));
    right: var(--space-lg);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    color: var(--white);
    font-size: 0.875rem;
    animation: slideIn 0.3s ease;
    min-width: 250px;
}

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

.toast.error {
    background-color: var(--danger);
}

.toast.warning {
    background-color: var(--warning);
    color: var(--gray-900);
}

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

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

/* ============================================
   Code/Monospace
   ============================================ */
code {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    background-color: var(--gray-100);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
}

/* ============================================
   Specifications Fields
   ============================================ */
.spec-field {
    padding: var(--space-md);
    background-color: var(--gray-50);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
}

.spec-field .form-group {
    margin-bottom: var(--space-sm);
}

.input-with-button {
    display: flex;
    gap: var(--space-sm);
}

.input-with-button input {
    flex: 1;
}

/* ============================================
   Delivery Addresses
   ============================================ */
.delivery-address {
    padding: var(--space-md);
    background-color: var(--gray-50);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
}

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

.address-header h4 {
    margin: 0;
}

address {
    font-style: normal;
    line-height: 1.6;
}

/* ============================================
   Quantity Controls
   ============================================ */
.quantity-control {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.quantity-value {
    min-width: 2rem;
    text-align: center;
    font-weight: 600;
}

/* ============================================
   History Timeline
   ============================================ */
.history-item {
    padding: var(--space-md);
    border-left: 2px solid var(--gray-200);
    margin-left: var(--space-md);
    padding-left: var(--space-lg);
    position: relative;
}

.history-item::before {
    content: "";
    position: absolute;
    left: -5px;
    top: var(--space-md);
    width: 8px;
    height: 8px;
    background-color: var(--primary);
    border-radius: 50%;
}

.history-time {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-bottom: var(--space-xs);
}

.history-content {
    font-size: 0.875rem;
}

/* ============================================
   Image Gallery
   ============================================ */
.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--space-md);
}

.image-item {
    background-color: var(--gray-100);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    text-align: center;
}

.image-placeholder {
    width: 100%;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--gray-200);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
    font-size: 0.75rem;
    color: var(--gray-500);
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================
   Stat Card Variants
   ============================================ */
.stat-card.success {
    border-left: 4px solid var(--success);
}

.stat-card.warning {
    border-left: 4px solid var(--warning);
}

.stat-card.danger {
    border-left: 4px solid var(--danger);
}

.stat-card.info {
    border-left: 4px solid var(--info);
}

/* ============================================
   Table Footer
   ============================================ */
table tfoot tr {
    background-color: var(--gray-50);
}

table tfoot td {
    border-bottom: none;
}

/* ============================================
   Reminder Row States
   ============================================ */
tr.row-overdue {
    background-color: #fef2f2;
}

tr.row-overdue:hover {
    background-color: #fee2e2;
}

tr.row-due-today {
    background-color: #fffbeb;
}

tr.row-due-today:hover {
    background-color: #fef3c7;
}