/* Phase 1: Structure & Box Model Styles */

/* Comparison Grid */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: var(--space-8);
}

@media (min-width: 768px) {
    .comparison-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Card Component (matching sample.html) */
.card,
.demo-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

.card-header,
.demo-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
}

.card-title {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.demo-content {
    padding: 24px;
}

/* Code Block with Syntax Highlighting */
.code-block,
.code-preview {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background: #000;
    padding: 16px;
    border-radius: 8px;
    color: #d4d4d4;
    overflow-x: auto;
    margin-bottom: 16px;
}

.code-preview {
    border-radius: 0;
    margin-bottom: 0;
}

.code-preview pre {
    margin: 0;
}

/* Syntax Highlighting Classes */
.keyword {
    color: #c678dd;
}

/* purple */
.tag {
    color: #e06c75;
}

/* red */
.attr {
    color: #d19a66;
}

/* orange */
.val {
    color: #98c379;
}

/* green */
.comment {
    color: #5c6370;
    font-style: italic;
}

/* Visual Demo Area */
.visual-demo {
    height: 120px;
    background: #000;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* Old Demo Style */
.old-demo-content {
    border: 1px solid #555;
    padding: 10px;
    width: 80%;
    text-align: center;
    font-family: serif;
    color: var(--text-secondary);
}

/* Modern Demo Box with Animation */
.modern-box {
    background: var(--accent);
    color: var(--bg-primary);
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: bold;
    box-shadow: 0 4px 12px var(--accent-glow);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

/* Box Model Demo */
.box-model-visualizer {
    margin-top: var(--space-8);
    padding: var(--space-8);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.box-demo-item {
    background: var(--accent);
    color: var(--bg-primary);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
    border: 4px solid var(--danger);
    font-weight: 600;
}

.box-demo-item.is-block {
    display: block;
}

.box-demo-item.is-inline {
    display: inline;
}

.box-demo-item.is-inline-block {
    display: inline-block;
}

/* Control Buttons */
.controls {
    margin-bottom: var(--space-6);
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.btn-control {
    appearance: none;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--space-2) var(--space-4);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-control:hover,
.btn-control.active {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

/* Remove persistent blue outline when clicking buttons */
.btn-control:focus:not(:focus-visible) {
    outline: none;
}

/* Units Demo */
.units-container {
    border: 1px solid var(--border);
    padding: var(--space-4);
    margin-top: var(--space-8);
    position: relative;
    overflow: hidden;
    resize: horizontal;
    max-width: 100%;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.unit-box {
    background: #000;
    border: 1px solid var(--accent);
    margin-bottom: var(--space-2);
    padding: var(--space-2);
    white-space: nowrap;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-primary);
}