/* Modern Commerce Demo UI - Responsive 2-Column Layout */

:root {
    /* Light Mode Colors */
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --secondary: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border: #e5e7eb;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.15);

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

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

[data-theme="dark"] {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #22d3ee;
    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --border: #374151;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-lg: rgba(0, 0, 0, 0.5);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

/* Navbar */
.navbar {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px var(--shadow);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-nav {
    display: flex;
    gap: var(--spacing-sm);
    list-style: none;
    flex-wrap: wrap;
}

.nav-link {
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.2s;
    font-weight: 500;
}

.nav-link:hover, .nav-link.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

.theme-toggle {
    background: var(--bg-tertiary);
    border: none;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

/* Config Badge */
.config-badge-container {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    align-items: flex-end;
}

.config-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
}

/* Main Layout - 2 Column */
.main-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-lg);
}

/* Responsive Navbar */
@media (max-width: 1400px) {
    .navbar-container {
        padding: var(--spacing-sm);
    }

    .navbar-nav {
        gap: 0.5rem;
    }

    .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }

    .navbar-brand {
        font-size: 1.25rem;
    }

    .config-badge {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
    }
}

@media (max-width: 1200px) {
    .main-container {
        grid-template-columns: 1fr;
    }

    .api-panel {
        position: sticky;
        top: 80px;
        max-height: calc(100vh - 100px);
    }

    .navbar-nav {
        gap: 0.25rem;
    }

    .nav-link {
        padding: 0.5rem 0.6rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 1024px) {
    .navbar-container {
        flex-wrap: wrap;
    }

    .navbar-nav {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: 0.5rem;
        padding-top: 0.5rem;
        border-top: 1px solid var(--border);
    }

    .navbar-actions {
        order: 2;
    }
}

/* Content Area */
.content-area {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 20px var(--shadow);
}

/* API Panel (Right Side) */
.api-panel {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 20px var(--shadow);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    position: sticky;
    top: 80px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
}

.panel-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.panel-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.endpoint-badge {
    background: var(--bg-tertiary);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--secondary);
    word-break: break-all;
}

.api-textarea {
    width: 100%;
    min-height: 150px;
    padding: var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    resize: vertical;
}

.response-box {
    background: var(--bg-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    min-height: 200px;
    max-height: 400px;
    overflow-y: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    white-space: pre-wrap;
    word-break: break-all;
}

.response-success {
    color: var(--success);
}

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

/* Cards */
.card {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 10px var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--shadow-lg);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.card-header {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.card-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
    text-decoration: none;
    font-size: 1rem;
}

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

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--shadow-lg);
}

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

.btn-secondary:hover:not(:disabled) {
    opacity: 0.9;
    transform: translateY(-1px);
}

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

.btn-success:hover:not(:disabled) {
    opacity: 0.9;
    transform: translateY(-1px);
}

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

.btn-danger:hover:not(:disabled) {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.btn-group {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Form Elements */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: var(--spacing-md);
}

.form-label {
    font-weight: 600;
    color: var(--text-primary);
}

.form-input, .form-select {
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary);
}

/* Product/Plan Cards */
.product-card, .plan-card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border);
    transition: all 0.2s;
}

.product-card:hover, .plan-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px var(--shadow-lg);
}

.product-image {
    width: 100%;
    height: 200px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin: var(--spacing-sm) 0;
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-sm) 0;
}

.quantity-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s;
}

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

.quantity-input {
    width: 60px;
    text-align: center;
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Features List */
.features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.feature-item::before {
    content: "✓";
    color: var(--success);
    font-weight: bold;
    font-size: 1.2rem;
}

/* Loading Skeleton */
.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

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

.alert-info {
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid var(--secondary);
    color: var(--secondary);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning);
    color: var(--warning);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

/* Code Block */
.code-block {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    border: 1px solid var(--border);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Cart Summary */
.cart-summary {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--primary);
    position: sticky;
    top: 80px;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border);
}

.cart-total {
    display: flex;
    justify-content: space-between;
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: var(--spacing-md);
    color: var(--primary);
}