/**
 * Unified Platform Styles
 * Combines the best design elements from all three systems
 */

/* CSS Variables for theming */
:root {
    /* Primary colors */
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;

    /* Background colors */
    --background-color: #e3f2fd;
    --background-gradient: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    --surface-color: #ffffff;
    --surface-secondary: #f8f9fa;

    /* Text colors */
    --text-primary: #333333;
    --text-secondary: #6c757d;
    --text-muted: #999999;
    --text-light: #ffffff;

    /* Border and shadow */
    --border-color: #e0e0e0;
    --border-radius: 8px;
    --border-radius-lg: 15px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);

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

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark mode variables */
[data-theme="dark"] {
    --background-color: #1a1a1a;
    --background-gradient: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    --surface-color: #2d2d2d;
    --surface-secondary: #3d3d3d;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #999999;
    --border-color: #404040;
}

/* Base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--background-gradient);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Container layouts */
.container-fluid {
    padding: 0 var(--spacing-md);
}

.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

.dashboard-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-lg);
    min-height: 100vh;
}

@media (max-width: 768px) {
    .dashboard-container {
        grid-template-columns: 1fr;
    }
}

/* Navigation styles */
.sidebar {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
    height: fit-content;
    position: sticky;
    top: var(--spacing-lg);
}

.sidebar-brand {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.sidebar-brand h1 {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.sidebar-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.nav-menu {
    list-style: none;
}

.nav-item {
    margin-bottom: var(--spacing-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    background: var(--surface-secondary);
    color: var(--primary-color);
    transform: translateX(2px);
}

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

.nav-link i {
    margin-right: var(--spacing-sm);
    width: 20px;
    text-align: center;
}

.nav-badge {
    margin-left: auto;
    background: var(--danger-color);
    color: var(--text-light);
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
}

/* Main content area */
.main-content {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-xl);
    min-height: calc(100vh - 2rem);
}

/* Header styles */
.page-header {
    display: flex;
    justify-content: between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.page-subtitle {
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* Card components */
.card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
}

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

.card-header {
    padding: var(--spacing-lg);
    background: var(--surface-secondary);
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

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

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

.card-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--surface-secondary);
    border-top: 1px solid var(--border-color);
}

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

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

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

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Statistics cards */
.stat-card {
    background: var(--surface-color);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-fast);
    border-left: 4px solid var(--primary-color);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    display: block;
}

.stat-label {
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 1px;
    font-weight: 500;
}

.stat-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

/* Button styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    line-height: 1.5;
    gap: var(--spacing-xs);
}

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

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: var(--secondary-color);
    color: var(--text-light);
}

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

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

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

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

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

/* Form styles */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    background: var(--surface-color);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

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

.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 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right var(--spacing-sm) center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

.input-group {
    display: flex;
    gap: 0;
}

.input-group .form-control {
    border-radius: 0;
}

.input-group .form-control:first-child {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.input-group .form-control:last-child {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.input-group-text {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    color: var(--text-secondary);
}

/* Table styles */
.table-container {
    overflow-x: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface-color);
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background: var(--surface-secondary);
    font-weight: 600;
    color: var(--text-primary);
}

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

/* Badge styles */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary { background: var(--primary-color); color: var(--text-light); }
.badge-success { background: var(--success-color); color: var(--text-light); }
.badge-warning { background: var(--warning-color); color: var(--text-primary); }
.badge-danger { background: var(--danger-color); color: var(--text-light); }
.badge-secondary { background: var(--secondary-color); color: var(--text-light); }

/* Alert styles */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    border: 1px solid;
}

.alert-success {
    background: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

.alert-warning {
    background: #fff3cd;
    border-color: #ffeaa7;
    color: #856404;
}

.alert-danger {
    background: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

.alert-info {
    background: #cce7ff;
    border-color: #99d3ff;
    color: #004085;
}

/* Modal styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.modal {
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: all var(--transition-normal);
}

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

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

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--surface-secondary);
    color: var(--text-primary);
}

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

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

/* Loading states */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* Item list styles */
.item-list {
    display: grid;
    gap: var(--spacing-md);
}

.item-card {
    display: flex;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
}

.item-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.item-image {
    width: 80px;
    height: 80px;
    background: var(--surface-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1.5rem;
}

.item-content {
    flex: 1;
    padding: var(--spacing-md);
}

.item-title {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.item-meta {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: var(--spacing-xs);
}

.item-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
}

.item-actions {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    align-items: flex-end;
    justify-content: center;
}

/* Status indicators */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
    font-weight: 500;
}

.status-indicator::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-wanted::before { background: var(--warning-color); }
.status-owned::before { background: var(--success-color); }
.status-archived::before { background: var(--secondary-color); }
.status-ordered::before { background: var(--info-color); }

/* Utility classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-flex { display: flex; }
.d-block { display: block; }
.d-none { display: none; }

.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }

.m-0 { margin: 0; }
.m-1 { margin: var(--spacing-xs); }
.m-2 { margin: var(--spacing-sm); }
.m-3 { margin: var(--spacing-md); }
.m-4 { margin: var(--spacing-lg); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

/* Responsive design */
@media (max-width: 576px) {
    .main-container {
        padding: var(--spacing-sm);
    }

    .main-content {
        padding: var(--spacing-md);
    }

    .dashboard-container {
        gap: var(--spacing-md);
    }

    .sidebar {
        position: static;
        margin-bottom: var(--spacing-md);
    }
}

/* Animation classes */
.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

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

.slide-in {
    animation: slideIn 0.3s ease-in-out;
}

@keyframes slideIn {
    from { transform: translateX(-20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}