/* Block Engine CSS - Base styles for block types */

:root {
    /* Theme CSS Variables (overridden by theme.css) */
    --color-primary: #1a1a1a;
    --color-secondary: #4a4a4a;
    --color-background: #ffffff;
    --color-text: #1a1a1a;
    --color-accent: #0066cc;

    --font-heading: system-ui, -apple-system, sans-serif;
    --font-body: system-ui, -apple-system, sans-serif;

    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

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

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.app-container {
    max-width: 100%;
    min-height: 100vh;
    overflow-x: hidden;
}

#block-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

/* Block Base */
.block {
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
}

.block-horizontal {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-sm);
}

/* Text Block */
.block-text h1 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.block-text h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.block-text p {
    font-size: 1rem;
    color: var(--color-text);
}

/* Image Block */
.block-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
}

/* Video Block */
.block-video video,
.block-video iframe {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 8px;
    background: #000;
}

/* Audio Block */
.block-audio audio {
    width: 100%;
}

/* Checklist Block */
.checklist {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 0, 0, 0.03);
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.checklist-item:hover {
    background: rgba(0, 0, 0, 0.06);
}

.checklist-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--color-accent);
}

.checklist-item span {
    flex: 1;
}

.checklist-item input:checked+span {
    text-decoration: line-through;
    opacity: 0.6;
}


/* Hero Block */
.block-hero {
    position: relative;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    background-color: var(--color-background);
    color: var(--color-text);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.8;
    margin-bottom: var(--spacing-lg);
}

.hero-btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--color-accent);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: transform 0.2s;
}

.hero-btn:hover {
    transform: translateY(-2px);
}

/* Navigation Block */
.block-navigation {
    padding: var(--spacing-md);
    background: var(--color-background);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--color-accent);
}

/* Grid Block */
.block-grid {
    padding: var(--spacing-md);
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.grid-card {
    background: rgba(0, 0, 0, 0.02);
    padding: var(--spacing-md);
    border-radius: 8px;
    text-align: center;
    transition: background 0.2s;
}

.grid-card:hover {
    background: rgba(0, 0, 0, 0.05);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.grid-card h3 {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.grid-card p {
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Responsive Overrides */
@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .nav-links {
        display: none;
    }

    /* Simplified mobile nav */
}