/* ============================================================
   ARO Website - Subpage Styles
   Common styling for all subpages (fdd, tutorial, docs, etc.)
   Combines gradient background with spacious layout
   ============================================================ */

/* Subpage Hero */
.subpage-hero {
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 140px var(--space-lg) 80px;
    position: relative;
    overflow: hidden;
}

/* Colorful gradient background */
.subpage-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 25% 20%, rgba(124, 58, 237, 0.15) 0%, transparent 45%),
        radial-gradient(ellipse 50% 40% at 75% 75%, rgba(6, 182, 212, 0.12) 0%, transparent 45%),
        radial-gradient(ellipse 40% 30% at 50% 50%, rgba(0, 255, 136, 0.05) 0%, transparent 40%);
    pointer-events: none;
}

/* Grid pattern overlay */
.subpage-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 255, 136, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 136, 0.02) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
    pointer-events: none;
}

.subpage-hero > * {
    position: relative;
    z-index: 1;
}

.subpage-hero h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.subpage-hero .lead {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    max-width: 700px;
    line-height: 1.8;
}

.subpage-hero .lead strong {
    color: var(--color-text);
}

.subpage-hero .lead em {
    color: var(--color-accent);
    font-style: normal;
}

/* Subpage Content */
.subpage-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg);
}

.subpage-content.wide {
    max-width: 1000px;
}

/* Section styling */
.subpage-section {
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.subpage-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.subpage-section h2 {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
}

.subpage-section h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: var(--space-xl) 0 var(--space-md);
    color: var(--color-text);
}

.subpage-section p {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 1.9;
    margin-bottom: var(--space-md);
}

.subpage-section p:last-child {
    margin-bottom: 0;
}

.subpage-section strong {
    color: var(--color-text);
}

.subpage-section em {
    color: var(--color-accent);
    font-style: normal;
}

.subpage-section code {
    font-family: var(--font-mono);
    background: var(--color-bg-elevated);
    padding: 2px 8px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 0.9em;
}

.subpage-section ul,
.subpage-section ol {
    color: var(--color-text-muted);
    margin: var(--space-md) 0 var(--space-lg) var(--space-lg);
    line-height: 2;
}

.subpage-section li {
    margin-bottom: var(--space-xs);
}

/* Callout boxes */
.subpage-callout {
    background: var(--color-bg-elevated);
    border-left: 3px solid var(--color-accent);
    padding: var(--space-lg) var(--space-xl);
    margin: var(--space-xl) 0;
    border-radius: 0 8px 8px 0;
}

.subpage-callout p {
    margin-bottom: 0;
    font-size: 1rem;
    color: var(--color-text);
}

.subpage-callout.warning {
    border-left-color: #f59e0b;
}

.subpage-callout.success {
    border-left-color: #10b981;
}

/* Code blocks */
.subpage-code {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    margin: var(--space-lg) 0;
}

.subpage-code-header {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--color-border);
    gap: 8px;
}

.subpage-code-header .dots {
    display: flex;
    gap: 6px;
}

.subpage-code-header .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.subpage-code-header .filename {
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.subpage-code pre {
    padding: var(--space-lg);
    margin: 0;
    overflow-x: auto;
    font-size: 0.875rem;
    line-height: 1.8;
}

/* CTA section at bottom */
.subpage-cta {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
    border-top: 1px solid var(--color-border);
    position: relative;
}

.subpage-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.subpage-cta h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-md);
}

.subpage-cta p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
    font-size: 1.1rem;
}

.subpage-cta .cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 768px) {
    .subpage-hero {
        min-height: 50vh;
        padding: 120px var(--space-md) 60px;
    }

    .subpage-hero h1 {
        font-size: clamp(2rem, 10vw, 2.5rem);
    }

    .subpage-content {
        padding: var(--space-xl) var(--space-md);
    }

    .subpage-cta .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .subpage-cta .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}