/* Phase 4+: Additional Sections Styles */

/* =============================================
   8. RESPONSIVE DESIGN DEMO
   ============================================= */
.responsive-demo {
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    margin-top: var(--space-8);
}

.responsive-demo-header {
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.responsive-demo-content {
    padding: var(--space-4);
    background: #000;
}

.responsive-box {
    background: var(--accent);
    color: var(--bg-primary);
    padding: var(--space-4);
    text-align: center;
    font-weight: 600;
    border-radius: 6px;
    transition: all 0.3s ease;
}

/* Changes at different breakpoints */
@media (max-width: 768px) {
    .responsive-box.demo-responsive {
        background: var(--success);
    }
}

@media (max-width: 480px) {
    .responsive-box.demo-responsive {
        background: var(--danger);
    }
}

/* =============================================
   9. POSITION PROPERTY DEMO
   ============================================= */
.position-demo {
    position: relative;
    height: 300px;
    background: #000;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    margin-top: var(--space-8);
}

.position-box {
    padding: var(--space-3);
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    text-align: center;
}

.pos-static {
    background: var(--text-secondary);
    color: var(--bg-primary);
}

.pos-relative {
    position: relative;
    top: 10px;
    left: 10px;
    background: var(--accent);
    color: var(--bg-primary);
}

.pos-absolute {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--danger);
    color: white;
}

.pos-fixed-demo {
    background: var(--success);
    color: var(--bg-primary);
}

.pos-sticky-demo {
    position: sticky;
    top: 0;
    background: #a855f7;
    color: white;
    z-index: 5;
}

/* =============================================
   10. CSS VARIABLES DEMO
   ============================================= */
.variable-demo {
    margin-top: var(--space-8);
    padding: var(--space-6);
    background: var(--bg-secondary);
    border-radius: 8px;
    --demo-color: var(--accent);
}

.variable-box {
    background: var(--demo-color);
    color: var(--bg-primary);
    padding: var(--space-4);
    border-radius: 6px;
    text-align: center;
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.color-buttons {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.color-btn {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    transition: transform 0.2s;
}

.color-btn:hover {
    transform: scale(1.1);
}

.color-btn.active {
    border-color: white;
    box-shadow: 0 0 0 2px var(--accent);
}

/* =============================================
   11. TRANSITION & ANIMATION DEMO
   ============================================= */
.animation-demos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    margin-top: var(--space-8);
}

.animation-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: var(--space-4);
    text-align: center;
}

.animation-card h4 {
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.transition-box {
    width: 80px;
    height: 80px;
    background: var(--accent);
    border-radius: 6px;
    margin: 0 auto;
    transition: all 0.3s ease;
}

.transition-box:hover {
    transform: scale(1.2) rotate(10deg);
    background: var(--success);
}

.pulse-box {
    width: 80px;
    height: 80px;
    background: var(--danger);
    border-radius: 50%;
    margin: 0 auto;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.7;
    }
}

.slide-box {
    width: 80px;
    height: 80px;
    background: #a855f7;
    border-radius: 6px;
    margin: 0 auto;
    animation: slide 2s ease-in-out infinite alternate;
}

@keyframes slide {
    from {
        transform: translateX(-20px);
    }

    to {
        transform: translateX(20px);
    }
}

/* =============================================
   12. OVERFLOW & Z-INDEX DEMO
   ============================================= */
.overflow-demos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-4);
    margin-top: var(--space-8);
}

.overflow-box {
    height: 100px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: var(--space-2);
    font-size: 0.8rem;
}

.overflow-box.demo-hidden {
    overflow: hidden;
}

.overflow-box.demo-scroll {
    overflow: scroll;
}

.overflow-box.demo-auto {
    overflow: auto;
}

.zindex-demo {
    position: relative;
    height: 200px;
    margin-top: var(--space-8);
}

.zindex-box {
    position: absolute;
    width: 120px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
}

.z-1 {
    background: var(--danger);
    top: 20px;
    left: 20px;
    z-index: 1;
}

.z-2 {
    background: var(--accent);
    top: 50px;
    left: 80px;
    z-index: 2;
}

.z-3 {
    background: var(--success);
    top: 80px;
    left: 140px;
    z-index: 3;
}

/* =============================================
   13. BAD PRACTICES
   ============================================= */
.bad-practice-list {
    margin-top: var(--space-8);
}

.bad-practice-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-left: 4px solid var(--danger);
    border-radius: 0 8px 8px 0;
    padding: var(--space-4);
    margin-bottom: var(--space-4);
}

.bad-practice-item h4 {
    color: var(--danger);
    margin-bottom: var(--space-2);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.bad-practice-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* =============================================
   14. DEBUGGING TIPS
   ============================================= */
.debug-tips {
    margin-top: var(--space-8);
}

.debug-tip {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-left: 4px solid var(--success);
    border-radius: 0 8px 8px 0;
    padding: var(--space-4);
    margin-bottom: var(--space-4);
}

.debug-tip h4 {
    color: var(--success);
    margin-bottom: var(--space-2);
}

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

.keyboard-shortcut {
    display: inline-block;
    background: #000;
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    border: 1px solid var(--border);
}