/* ===============================================
   Responsive Design Page Styles
   =============================================== */

/* Units Comparison Demo */
.units-comparison {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding: 24px;
    background: var(--color-surface, #f8fafc);
    border-radius: 12px;
}

.unit-box {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.unit-px {
    width: 100px;
    background: #2563eb;
}

.unit-percent {
    width: 50%;
    background: #7c3aed;
}

.unit-rem {
    width: 5rem;
    background: #10b981;
}

.unit-vw {
    width: 25vw;
    background: #f59e0b;
}

/* Breakpoint Visualizer */
.breakpoint-visualizer {
    display: grid;
    gap: 12px;
    padding: 24px;
    background: var(--color-surface, #f8fafc);
    border-radius: 12px;
    margin-bottom: 16px;
}

.bp-indicator {
    padding: 16px 24px;
    background: white;
    border-radius: 8px;
    border: 2px solid var(--color-border, #e2e8f0);
    display: flex;
    justify-content: space-between;
    align-items: center;
    opacity: 0.4;
    transition: all 0.3s ease;
}

.dark .bp-indicator {
    background: var(--color-background, #0f172a);
}

.bp-indicator.active {
    opacity: 1;
    border-color: #2563eb;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    transform: scale(1.02);
}

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

.bp-label {
    font-weight: 700;
    color: var(--color-text, #1e293b);
}

.bp-range {
    font-family: 'Space Mono', monospace;
    font-size: 0.875rem;
    color: var(--color-text-secondary, #64748b);
}

.current-breakpoint {
    text-align: center;
    padding: 16px;
    background: #2563eb;
    color: white;
    font-weight: 700;
    border-radius: 8px;
    font-size: 1.125rem;
}

/* Fluid Heading Demo */
.fluid-heading {
    font-size: clamp(1.5rem, 4vw + 1rem, 3rem);
    line-height: 1.2;
    text-align: center;
    padding: 32px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 12px;
    margin: 0;
}

/* Object-fit Demo */
.object-fit-demo {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    padding: 24px;
    background: var(--color-surface, #f8fafc);
    border-radius: 12px;
}

.fit-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.fit-box span {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary, #64748b);
}

.fit-item {
    width: 150px;
    height: 100px;
    border: 2px solid var(--color-border, #e2e8f0);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    overflow: hidden;
}

.dark .fit-item {
    background: linear-gradient(135deg, #1e3a5f 0%, #1e293b 100%);
}

.fit-cover {
    object-fit: cover;
}

.fit-contain {
    object-fit: contain;
}

.fit-fill {
    object-fit: fill;
}

/* Responsive Grid Demo */
.responsive-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 24px;
    background: var(--color-surface, #f8fafc);
    border-radius: 12px;
}

@media (min-width: 768px) {
    .responsive-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (min-width: 1024px) {
    .responsive-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
}

.grid-card {
    aspect-ratio: 1;
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
    transition: transform 0.2s ease;
}

.grid-card:hover {
    transform: translateY(-4px);
}

/* Responsive Navigation Demo */
.responsive-nav-demo {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 24px;
    background: var(--color-surface, #f8fafc);
    border-radius: 12px;
}

.demo-nav-mobile,
.demo-nav-desktop {
    padding: 20px;
    background: white;
    border-radius: 8px;
    border: 2px solid var(--color-border, #e2e8f0);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dark .demo-nav-mobile,
.dark .demo-nav-desktop {
    background: var(--color-background, #0f172a);
}

.demo-nav-mobile span,
.demo-nav-desktop span {
    font-weight: 600;
    color: var(--color-text, #1e293b);
}

.demo-hamburger {
    width: 44px;
    height: 44px;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.demo-hamburger:hover {
    background: #1d4ed8;
    transform: scale(1.05);
}

.demo-nav-links {
    display: flex;
    gap: 24px;
}

.demo-nav-links a {
    color: var(--color-text, #1e293b);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.demo-nav-links a:hover {
    background: #2563eb;
    color: white;
}

/* Tip Box */
.tip-box {
    margin-top: 24px;
    padding: 24px;
    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 12px 0;
    color: var(--color-text, #1e293b);
    font-size: 1.125rem;
}

.tip-box p {
    margin: 8px 0 0 0;
    color: var(--color-text, #1e293b);
    line-height: 1.6;
}

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

.tip-box code {
    background: rgba(37, 99, 235, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.875em;
}

/* Related Links Cards */
.related-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.related-card {
    padding: 32px;
    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:hover {
    border-color: #60a5fa;
}

.related-card h3 {
    margin: 0 0 12px 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) {
    .units-comparison {
        flex-direction: column;
    }

    .unit-box {
        width: 100% !important;
    }

    .object-fit-demo {
        flex-direction: column;
        align-items: center;
    }

    .demo-nav-links {
        flex-direction: column;
        gap: 12px;
    }

    .demo-nav-links a {
        text-align: center;
    }

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

@media (max-width: 480px) {
    .bp-indicator {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .fluid-heading {
        padding: 24px 16px;
    }

    .fit-item {
        width: 120px;
        height: 80px;
        font-size: 2rem;
    }
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    .bp-indicator,
    .grid-card,
    .demo-hamburger,
    .demo-nav-links a,
    .related-card {
        transition: none !important;
    }
}