/**
 * Supplier Portal - Global CSS System
 * ====================================
 * 
 * This file contains the design system for the entire portal.
 * It provides CSS custom properties (variables), reusable component classes,
 * and utility helpers that work alongside Tailwind CSS.
 * 
 * Usage:
 * - Include this file in layouts/app.blade.php
 * - Use component classes like .btn, .card, .badge, etc.
 * - CSS variables can be overridden per-tenant via inline styles
 * 
 * Structure:
 * 1. CSS Custom Properties (Design Tokens)
 * 2. Base/Reset Styles
 * 3. Typography
 * 4. Buttons
 * 5. Cards
 * 6. Badges & Pills
 * 7. Form Controls
 * 8. Tables
 * 9. Alerts & Notifications
 * 10. Navigation
 * 11. Modals
 * 12. Utility Classes
 * 13. Animations
 */

/* ==========================================================================
   1. CSS Custom Properties (Design Tokens)
   ========================================================================== */

:root {
    /* Primary Colors - Can be overridden per tenant */
    /* NOTE: Default is #3B82F6 (Blue-500) matching config/settings.php */
    --color-primary-50: #eff6ff;
    --color-primary-100: #dbeafe;
    --color-primary-200: #bfdbfe;
    --color-primary-300: #93c5fd;
    --color-primary-400: #60a5fa;
    --color-primary-500: #3b82f6;
    --color-primary-600: #2563eb;
    --color-primary-700: #1d4ed8;
    --color-primary-800: #1e40af;
    --color-primary-900: #1e3a8a;
    
    /* Shorthand primary - Use 500 to match config default #3B82F6 */
    --color-primary: var(--color-primary-500);
    --color-primary-light: var(--color-primary-400);
    --color-primary-dark: var(--color-primary-600);
    
    /* Legacy variable names for backward compatibility with landing/index.blade.php */
    --primary-color: var(--color-primary);
    --secondary-color: var(--color-gray-500);
    --color-primary-bg: var(--color-primary-50);
    
    /* Gray Scale */
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    
    /* Semantic Colors */
    --color-success: #10b981;
    --color-success-light: #d1fae5;
    --color-success-dark: #059669;
    
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-warning-dark: #d97706;
    
    --color-danger: #ef4444;
    --color-danger-light: #fee2e2;
    --color-danger-dark: #dc2626;
    
    --color-info: #3b82f6;
    --color-info-light: #dbeafe;
    --color-info-dark: #2563eb;
    
    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Consolas, monospace;
    
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    
    /* Spacing */
    --spacing-0: 0;
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    
    /* Border Radius */
    --radius-none: 0;
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

/* ==========================================================================
   2. Base/Reset Styles
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-family: var(--font-sans);
    line-height: var(--leading-normal);
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--color-gray-900);
    background-color: var(--color-gray-50);
}

/* ==========================================================================
   3. Typography
   ========================================================================== */

.text-primary { color: var(--color-primary) !important; }
.text-primary-light { color: var(--color-primary-light) !important; }
.text-primary-dark { color: var(--color-primary-dark) !important; }

.text-success { color: var(--color-success) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-danger { color: var(--color-danger) !important; }
.text-info { color: var(--color-info) !important; }

.text-muted { color: var(--color-gray-500) !important; }

/* Page Headers */
.page-header {
    margin-bottom: var(--spacing-6);
}

.page-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-gray-900);
    line-height: var(--leading-tight);
}

.page-subtitle {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    margin-top: var(--spacing-1);
}

/* ==========================================================================
   4. Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    line-height: var(--leading-normal);
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--color-primary-200);
}

.btn:disabled,
.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Button Sizes */
.btn-xs {
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--text-xs);
}

.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--text-sm);
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--text-base);
}

.btn-xl {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--text-lg);
}

/* Button Variants */
.btn-primary {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

.btn-secondary {
    background-color: var(--color-gray-100);
    color: var(--color-gray-700);
    border-color: var(--color-gray-300);
}

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

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

.btn-success:hover {
    background-color: var(--color-success-dark);
    border-color: var(--color-success-dark);
}

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

.btn-warning:hover {
    background-color: var(--color-warning-dark);
    border-color: var(--color-warning-dark);
}

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

.btn-danger:hover {
    background-color: var(--color-danger-dark);
    border-color: var(--color-danger-dark);
}

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

.btn-info:hover {
    background-color: var(--color-info-dark);
    border-color: var(--color-info-dark);
}

/* Outline Variants */
.btn-outline-primary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

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

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

.btn-outline-danger {
    background-color: transparent;
    color: var(--color-danger);
    border-color: var(--color-danger);
}

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

/* Ghost Buttons (no border) */
.btn-ghost {
    background-color: transparent;
    color: var(--color-gray-600);
    border-color: transparent;
}

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

.btn-ghost-primary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: transparent;
}

.btn-ghost-primary:hover {
    background-color: var(--color-primary-50);
}

/* Link Button */
.btn-link {
    background-color: transparent;
    color: var(--color-primary);
    border-color: transparent;
    padding: 0;
}

.btn-link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* Button with Icon */
.btn svg,
.btn .icon {
    width: 1.25em;
    height: 1.25em;
}

.btn svg:first-child,
.btn .icon:first-child {
    margin-right: var(--spacing-2);
}

.btn svg:last-child:not(:first-child),
.btn .icon:last-child:not(:first-child) {
    margin-left: var(--spacing-2);
}

/* Icon-only Button */
.btn-icon {
    padding: var(--spacing-2);
}

.btn-icon svg,
.btn-icon .icon {
    margin: 0;
}

/* Button Group */
.btn-group {
    display: inline-flex;
}

.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-top-left-radius: var(--radius-lg);
    border-bottom-left-radius: var(--radius-lg);
}

.btn-group .btn:last-child {
    border-top-right-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
}

.btn-group .btn:not(:last-child) {
    border-right-width: 0;
}

/* ==========================================================================
   5. Cards
   ========================================================================== */

.card {
    background-color: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: var(--spacing-4) var(--spacing-6);
    border-bottom: 1px solid var(--color-gray-200);
    background-color: white;
}

.card-header-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-gray-900);
}

.card-header-subtitle {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    margin-top: var(--spacing-1);
}

.card-body {
    padding: var(--spacing-6);
}

.card-footer {
    padding: var(--spacing-4) var(--spacing-6);
    border-top: 1px solid var(--color-gray-200);
    background-color: var(--color-gray-50);
}

/* Card Variants */
.card-flush {
    box-shadow: none;
    border: none;
}

.card-bordered {
    box-shadow: none;
}

.card-elevated {
    box-shadow: var(--shadow-lg);
    border: none;
}

/* Card Hover Effect */
.card-hover {
    transition: all var(--transition-normal);
}

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

/* Stat Card */
.stat-card {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: var(--spacing-6);
}

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

.stat-card-label {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-600);
}

.stat-card-value {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--color-gray-900);
    margin-top: var(--spacing-1);
}

.stat-card-change {
    font-size: var(--text-sm);
    margin-top: var(--spacing-2);
}

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

.stat-card-icon {
    padding: var(--spacing-3);
    border-radius: var(--radius-xl);
}

.stat-card-icon.blue { background-color: var(--color-primary-100); color: var(--color-primary); }
.stat-card-icon.green { background-color: var(--color-success-light); color: var(--color-success); }
.stat-card-icon.yellow { background-color: var(--color-warning-light); color: var(--color-warning); }
.stat-card-icon.red { background-color: var(--color-danger-light); color: var(--color-danger); }
.stat-card-icon.purple { background-color: #f3e8ff; color: #9333ea; }

/* ==========================================================================
   6. Badges & Pills
   ========================================================================== */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    line-height: 1;
    border-radius: var(--radius-md);
    white-space: nowrap;
}

.badge-pill {
    border-radius: var(--radius-full);
    padding: var(--spacing-1) var(--spacing-3);
}

/* Badge Colors */
.badge-primary {
    background-color: var(--color-primary-100);
    color: var(--color-primary-700);
}

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

.badge-success {
    background-color: var(--color-success-light);
    color: #065f46;
}

.badge-warning {
    background-color: var(--color-warning-light);
    color: #92400e;
}

.badge-danger {
    background-color: var(--color-danger-light);
    color: #991b1b;
}

.badge-info {
    background-color: var(--color-info-light);
    color: #1e40af;
}

/* Solid Badges */
.badge-solid-primary {
    background-color: var(--color-primary);
    color: white;
}

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

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

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

/* Status Badges */
.badge-status {
    display: inline-flex;
    align-items: center;
}

.badge-status::before {
    content: '';
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    margin-right: var(--spacing-1);
}

.badge-status-success::before { background-color: var(--color-success); }
.badge-status-warning::before { background-color: var(--color-warning); }
.badge-status-danger::before { background-color: var(--color-danger); }
.badge-status-info::before { background-color: var(--color-info); }

/* ==========================================================================
   7. Form Controls
   ========================================================================== */

.form-group {
    margin-bottom: var(--spacing-4);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-1);
}

.form-label-required::after {
    content: ' *';
    color: var(--color-danger);
}

.form-input,
.form-select,
.form-textarea {
    display: block;
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
    color: var(--color-gray-900);
    background-color: white;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-gray-400);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-100);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    background-color: var(--color-gray-50);
    color: var(--color-gray-500);
    cursor: not-allowed;
}

/* Input Sizes */
.form-input-sm {
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--text-xs);
}

.form-input-lg {
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--text-base);
}

/* Input States */
.form-input-error,
.form-input.is-invalid {
    border-color: var(--color-danger);
}

.form-input-error:focus,
.form-input.is-invalid:focus {
    box-shadow: 0 0 0 3px var(--color-danger-light);
}

.form-input-success,
.form-input.is-valid {
    border-color: var(--color-success);
}

/* Input with Icon */
.input-group {
    position: relative;
}

.input-group-icon {
    position: absolute;
    left: var(--spacing-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-gray-400);
    pointer-events: none;
}

.input-group .form-input {
    padding-left: calc(var(--spacing-3) + 1.5rem);
}

/* Help Text */
.form-help {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    margin-top: var(--spacing-1);
}

.form-error {
    font-size: var(--text-sm);
    color: var(--color-danger);
    margin-top: var(--spacing-1);
}

/* Checkbox & Radio */
.form-checkbox,
.form-radio {
    width: 1rem;
    height: 1rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-radio {
    border-radius: 50%;
}

.form-checkbox:checked,
.form-radio:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.form-checkbox:focus,
.form-radio:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--color-primary-100);
}

/* Checkbox/Radio Label */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.form-check-label {
    font-size: var(--text-sm);
    color: var(--color-gray-700);
    cursor: pointer;
}

/* ==========================================================================
   8. Tables
   ========================================================================== */

.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.table th,
.table td {
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    vertical-align: middle;
}

.table th {
    font-weight: var(--font-medium);
    color: var(--color-gray-600);
    background-color: var(--color-gray-50);
    border-bottom: 1px solid var(--color-gray-200);
    white-space: nowrap;
}

.table td {
    border-bottom: 1px solid var(--color-gray-100);
}

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

/* Striped Table */
.table-striped tbody tr:nth-child(even) {
    background-color: var(--color-gray-50);
}

/* Hoverable Table */
.table-hover tbody tr:hover {
    background-color: var(--color-gray-50);
}

/* Compact Table */
.table-compact th,
.table-compact td {
    padding: var(--spacing-2) var(--spacing-3);
}

/* ==========================================================================
   9. Alerts & Notifications
   ========================================================================== */

.alert {
    display: flex;
    align-items: flex-start;
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
}

.alert-icon {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    margin-right: var(--spacing-3);
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: var(--font-semibold);
    margin-bottom: var(--spacing-1);
}

.alert-description {
    opacity: 0.9;
}

/* Alert Variants */
.alert-success {
    background-color: var(--color-success-light);
    border: 1px solid #a7f3d0;
    color: #065f46;
}

.alert-warning {
    background-color: var(--color-warning-light);
    border: 1px solid #fde68a;
    color: #92400e;
}

.alert-danger {
    background-color: var(--color-danger-light);
    border: 1px solid #fecaca;
    color: #991b1b;
}

.alert-info {
    background-color: var(--color-info-light);
    border: 1px solid #93c5fd;
    color: #1e40af;
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: var(--spacing-4);
    right: var(--spacing-4);
    z-index: var(--z-toast);
    padding: var(--spacing-4) var(--spacing-6);
    border-radius: var(--radius-lg);
    color: white;
    font-weight: var(--font-medium);
    box-shadow: var(--shadow-lg);
    transform: translateY(100%);
    opacity: 0;
    transition: all var(--transition-normal);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

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

/* ==========================================================================
   10. Navigation
   ========================================================================== */

/* Sidebar Navigation */
.nav-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-300);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    text-decoration: none;
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

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

.nav-item-icon {
    width: 1.25rem;
    height: 1.25rem;
    margin-right: var(--spacing-3);
}

/* Breadcrumbs */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--text-sm);
}

.breadcrumb-item {
    color: var(--color-gray-500);
}

.breadcrumb-item a {
    color: var(--color-gray-600);
    text-decoration: none;
}

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

.breadcrumb-item.active {
    color: var(--color-gray-900);
    font-weight: var(--font-medium);
}

.breadcrumb-separator {
    color: var(--color-gray-400);
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--color-gray-200);
}

.tab {
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-500);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab:hover {
    color: var(--color-gray-700);
}

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

/* ==========================================================================
   11. Modals
   ========================================================================== */

.modal-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.modal-backdrop.show {
    opacity: 1;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
}

.modal-content {
    background-color: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    max-width: 32rem;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    opacity: 0;
    transition: all var(--transition-normal);
}

.modal.show .modal-content {
    transform: scale(1);
    opacity: 1;
}

.modal-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--color-gray-200);
}

.modal-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-gray-900);
}

.modal-body {
    padding: var(--spacing-6);
}

.modal-footer {
    padding: var(--spacing-4) var(--spacing-6);
    border-top: 1px solid var(--color-gray-200);
    background-color: var(--color-gray-50);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
}

/* Modal Sizes */
.modal-sm .modal-content { max-width: 24rem; }
.modal-lg .modal-content { max-width: 48rem; }
.modal-xl .modal-content { max-width: 64rem; }

/* ==========================================================================
   12. Utility Classes
   ========================================================================== */

/* Background Colors */
.bg-primary { background-color: var(--color-primary) !important; }
.bg-primary-light { background-color: var(--color-primary-bg) !important; }
.bg-success { background-color: var(--color-success) !important; }
.bg-success-light { background-color: var(--color-success-light) !important; }
.bg-warning { background-color: var(--color-warning) !important; }
.bg-warning-light { background-color: var(--color-warning-light) !important; }
.bg-danger { background-color: var(--color-danger) !important; }
.bg-danger-light { background-color: var(--color-danger-light) !important; }

/* Border Colors */
.border-primary { border-color: var(--color-primary) !important; }
.border-success { border-color: var(--color-success) !important; }
.border-warning { border-color: var(--color-warning) !important; }
.border-danger { border-color: var(--color-danger) !important; }

/* Ring/Focus */
.ring-primary { --tw-ring-color: var(--color-primary) !important; }
.focus\:ring-primary:focus { --tw-ring-color: var(--color-primary) !important; }
.focus\:border-primary:focus { border-color: var(--color-primary) !important; }

/* Gradient */
.bg-primary-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
}

/* Dividers */
.divider {
    height: 1px;
    background-color: var(--color-gray-200);
    margin: var(--spacing-4) 0;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-12) var(--spacing-4);
}

.empty-state-icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto var(--spacing-4);
    color: var(--color-gray-300);
}

.empty-state-title {
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-2);
}

.empty-state-description {
    color: var(--color-gray-500);
    max-width: 24rem;
    margin: 0 auto;
}

/* Loading Spinner */
.spinner {
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.spinner-sm { width: 1rem; height: 1rem; }
.spinner-lg { width: 2rem; height: 2rem; }

/* Avatar */
.avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--color-gray-200);
    color: var(--color-gray-600);
    font-weight: var(--font-medium);
    overflow: hidden;
}

.avatar-sm { width: 2rem; height: 2rem; font-size: var(--text-xs); }
.avatar-md { width: 2.5rem; height: 2.5rem; font-size: var(--text-sm); }
.avatar-lg { width: 3rem; height: 3rem; font-size: var(--text-base); }
.avatar-xl { width: 4rem; height: 4rem; font-size: var(--text-lg); }

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

/* Truncate */
.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Line Clamp */
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================================================
   13. Animations
   ========================================================================== */

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

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
        animation-timing-function: cubic-bezier(0.8, 0, 1, 1);
    }
    50% {
        transform: translateY(-25%);
        animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
    }
}

/* Animation Classes */
.animate-fade-in { animation: fadeIn var(--transition-normal) ease-out; }
.animate-fade-in-up { animation: fadeInUp var(--transition-normal) ease-out; }
.animate-fade-in-down { animation: fadeInDown var(--transition-normal) ease-out; }
.animate-pulse { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }
.animate-bounce { animation: bounce 1s infinite; }
.animate-spin { animation: spin 1s linear infinite; }

/* Transition Classes */
.transition-all { transition: all var(--transition-normal); }
.transition-colors { transition: color, background-color, border-color var(--transition-normal); }
.transition-transform { transition: transform var(--transition-normal); }
.transition-opacity { transition: opacity var(--transition-normal); }

/* ==========================================================================
   14. Print Styles
   ========================================================================== */

@media print {
    .no-print { display: none !important; }
    
    .card {
        box-shadow: none;
        border: 1px solid var(--color-gray-300);
    }
    
    .btn { display: none; }
    
    a { text-decoration: underline; }
}