/* ===============================================
   CSS Custom Properties Page Styles
   =============================================== */

/* Basic Demo */
.custom-property-basic-demo {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem 2rem;
}

.custom-property-basic-demo .demo-box {
    --demo-primary: #2563eb;
    --demo-spacing: 2rem;
    --demo-radius: 12px;

    background: var(--demo-primary);
    color: white;
    padding: var(--demo-spacing);
    border-radius: var(--demo-radius);
    font-size: 1.25rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* Scope Demo */
.scope-demo {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    padding: 2rem;
}

:root {
    --global-demo-color: #2563eb;
}

.scope-box {
    flex: 1;
    min-width: 200px;
    padding: 1.5rem;
    border-radius: 12px;
    font-weight: 600;
}

.scope-global {
    background: var(--global-demo-color);
    color: white;
}

.scope-local {
    --local-color: #10b981;
    --local-text: white;

    background: var(--local-color);
    color: var(--local-text);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.scope-child {
    background: rgba(255, 255, 255, 0.2);
    padding: 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Theme Demo */
.theme-demo-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    padding: 2rem;
}

.theme-demo {
    --theme-bg: #ffffff;
    --theme-text: #1e293b;
    --theme-border: #e2e8f0;
    --theme-accent: #2563eb;

    background: var(--theme-bg);
    padding: 1.5rem;
    border-radius: 16px;
    border: 2px solid var(--theme-border);
}

.theme-demo[data-theme="dark"] {
    --theme-bg: #0f172a;
    --theme-text: #f1f5f9;
    --theme-border: #334155;
    --theme-accent: #60a5fa;
}

.theme-card {
    color: var(--theme-text);
}

.theme-card h3 {
    margin: 0 0 0.75rem 0;
    font-size: 1.5rem;
    color: var(--theme-text);
}

.theme-card p {
    margin: 0 0 1.5rem 0;
    line-height: 1.6;
    opacity: 0.85;
}

.theme-button {
    background: var(--theme-accent);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.theme-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Color Picker Demo */
.color-picker-demo {
    max-width: 500px;
    margin: 2rem auto;
}

.color-preview {
    --hue: 220;
    --saturation: 70%;
    --lightness: 55%;

    background: hsl(var(--hue), var(--saturation), var(--lightness));
    color: white;
    padding: 4rem 2rem;
    border-radius: 16px;
    text-align: center;
    margin-bottom: 2rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    transition: background 0.1s ease;
}

.color-preview p {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.color-controls {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background: var(--color-surface, #f8fafc);
    padding: 2rem;
    border-radius: 12px;
}

.dark .color-controls {
    background: var(--color-surface, #1e293b);
}

.color-controls label {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    color: var(--color-text, #1e293b);
    font-weight: 600;
    font-size: 0.875rem;
}

.color-controls input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--color-border, #e2e8f0);
    outline: none;
    -webkit-appearance: none;
}

.color-controls input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #2563eb;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.color-controls input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #2563eb;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.color-controls span {
    display: inline-block;
    min-width: 3ch;
    text-align: right;
    color: var(--color-primary, #2563eb);
    font-weight: 700;
}

/* Spacing Demo */
.spacing-demo {
    display: flex;
    flex-direction: column;
    padding: 2rem;
    background: var(--color-surface, #f8fafc);
    border-radius: 12px;
}

.dark .spacing-demo {
    background: var(--color-surface, #1e293b);
}

.spacing-item {
    --base-spacing: 0.5rem;
    --multiplier: 1;

    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    color: white;
    margin-bottom: calc(var(--base-spacing) * var(--multiplier));
    padding: calc(var(--base-spacing) * var(--multiplier));
    border-radius: 8px;
    font-weight: 600;
}

/* Component API Demo */
.component-api-demo {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    padding: 2rem;
}

.api-button {
    --button-color: #2563eb;
    --button-size: 1;

    background: var(--button-color);
    padding: calc(0.75rem * var(--button-size)) calc(1.5rem * var(--button-size));
    font-size: calc(1rem * var(--button-size));
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
    font-family: inherit;
}

.api-button:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Tip Box */
.tip-box {
    margin-top: 2rem;
    padding: 2rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-left: 4px solid #2563eb;
    border-radius: 8px;
}

.dark .tip-box {
    background: linear-gradient(135deg, #1e3a5f 0%, #1e293b 100%);
    border-left-color: #60a5fa;
}

.tip-box h4 {
    margin: 0 0 1rem 0;
    color: var(--color-text, #1e293b);
    font-size: 1.125rem;
}

.tip-box ul {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
}

.tip-box li {
    margin: 0.5rem 0;
    color: var(--color-text, #1e293b);
    line-height: 1.6;
}

.tip-box p {
    margin: 1rem 0 0 0;
    color: var(--color-text, #1e293b);
    line-height: 1.6;
}

.tip-box p:first-of-type {
    margin-top: 0;
}

/* Design System Demo */
.design-system-demo {
    display: flex;
    justify-content: center;
    margin: 2rem 0;
}

.ds-card {
    --color-primary-50: #eff6ff;
    --color-primary-500: #3b82f6;
    --color-primary-900: #1e3a8a;
    --color-background: var(--color-primary-50);
    --color-text: var(--color-primary-900);
    --color-accent: var(--color-primary-500);
    --space-6: 1.5rem;
    --radius-lg: 12px;
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);

    background: var(--color-background);
    color: var(--color-text);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    max-width: 400px;
}

.ds-card h3 {
    margin: 0 0 1rem 0;
    font-size: 1.5rem;
    color: var(--color-text);
}

.ds-card p {
    margin: 0 0 1.5rem 0;
    line-height: 1.6;
    opacity: 0.85;
}

.ds-button {
    --color-accent: #3b82f6;
    --space-3: 0.75rem;
    --space-6: 1.5rem;
    --font-size-base: 1rem;
    --radius-md: 8px;

    background: var(--color-accent);
    color: white;
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    border-radius: var(--radius-md);
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.ds-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Related Links Cards */
.related-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.related-card {
    padding: 2rem;
    background: var(--color-surface, #f8fafc);
    border: 2px solid var(--color-border, #e2e8f0);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border-color: #2563eb;
}

.dark .related-card {
    background: var(--color-surface, #1e293b);
    border-color: var(--color-border, #334155);
}

.dark .related-card:hover {
    border-color: #60a5fa;
}

.related-card h3 {
    margin: 0 0 0.75rem 0;
    color: var(--color-text, #1e293b);
    font-size: 1.25rem;
}

.related-card p {
    margin: 0;
    color: var(--color-text-secondary, #64748b);
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .scope-demo {
        flex-direction: column;
    }

    .theme-demo-container {
        grid-template-columns: 1fr;
    }

    .color-picker-demo {
        max-width: 100%;
    }

    .color-preview {
        padding: 3rem 1.5rem;
    }

    .color-preview p {
        font-size: 1.25rem;
    }

    .component-api-demo {
        flex-direction: column;
        align-items: stretch;
    }

    .api-button {
        width: 100%;
    }

    .related-links {
        grid-template-columns: 1fr;
    }
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    .theme-button,
    .api-button,
    .ds-button,
    .related-card,
    .color-preview {
        transition: none !important;
    }
}