/*
 * QSO Log Map - Content Pages (Features, FAQ)
 * Reuses CSS variables from base.css
 */

/* ========================================
   PAGE LAYOUT
   ======================================== */

.content-page {
    overflow-y: auto;
    overflow-x: hidden;
    height: 100%;
    background:
        radial-gradient(ellipse 80% 50% at 20% 40%, rgba(240, 180, 41, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(34, 211, 238, 0.02) 0%, transparent 50%),
        var(--bg-primary);
}

/* ========================================
   HEADER
   ======================================== */

.content-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-glass);
    backdrop-filter: blur(var(--blur-lg));
    -webkit-backdrop-filter: blur(var(--blur-lg));
    border-bottom: 1px solid var(--border-glass);
    box-shadow: var(--shadow-sm);
}

.content-header-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.content-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: inherit;
}

.content-logo-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 100%);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-md);
    color: var(--accent);
}

.content-logo-icon svg {
    width: 18px;
    height: 18px;
}

.content-logo-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.content-logo-sub {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    font-weight: 500;
}

.content-nav {
    display: flex;
    gap: 6px;
}

.content-nav a {
    padding: 7px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.content-nav a:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.content-nav a.active {
    color: var(--accent);
    background: var(--accent-glow);
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.content-main {
    max-width: 960px;
    margin: 0 auto;
    padding: 32px 24px 64px;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

.breadcrumb-sep {
    opacity: 0.4;
}

/* Hero */
.content-hero {
    margin-bottom: 48px;
}

.content-hero h1 {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.content-hero-sub {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 640px;
}

/* ========================================
   FEATURES GRID
   ======================================== */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 64px;
}

.feature-card {
    background: var(--bg-tertiary);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--border-default);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-md);
    color: var(--accent);
    margin-bottom: 16px;
}

.feature-icon svg {
    width: 20px;
    height: 20px;
}

.feature-card h2 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   FAQ
   ======================================== */

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 64px;
}

.faq-item {
    background: var(--bg-tertiary);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
}

.faq-item[open] {
    border-color: var(--border-default);
}

.faq-question {
    padding: 18px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition-fast);
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question::after {
    content: '+';
    font-size: 18px;
    font-weight: 400;
    color: var(--text-muted);
    transition: var(--transition-fast);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item[open] .faq-question::after {
    content: '\2212';
    color: var(--accent);
}

.faq-question:hover {
    color: var(--accent);
}

.faq-answer {
    padding: 0 24px 20px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.faq-answer p {
    margin-bottom: 10px;
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer ul,
.faq-answer ol {
    margin: 8px 0;
    padding-left: 20px;
}

.faq-answer li {
    margin-bottom: 4px;
}

.faq-answer code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    padding: 2px 6px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    color: var(--accent);
}

.faq-answer strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ========================================
   CTA SECTION
   ======================================== */

.content-cta {
    text-align: center;
    padding: 48px 24px;
    background: var(--bg-tertiary);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    margin-bottom: 48px;
}

.content-cta h2 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.content-cta p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.cta-button {
    display: inline-block;
    padding: 12px 28px;
    background: var(--accent);
    color: #000;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.cta-button:hover {
    background: var(--accent-dim);
}

/* ========================================
   FOOTER
   ======================================== */

.content-footer {
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-glass);
    backdrop-filter: blur(var(--blur-md));
}

.content-footer-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.footer-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.footer-sub {
    font-size: 11px;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 16px;
}

.footer-links a {
    font-size: 12px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 640px) {
    .content-header-inner {
        flex-direction: column;
        gap: 12px;
        padding: 12px 16px;
    }

    .content-main {
        padding: 24px 16px 48px;
    }

    .content-hero h1 {
        font-size: 24px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .faq-question {
        padding: 14px 16px;
        font-size: 13px;
    }

    .faq-answer {
        padding: 0 16px 16px;
    }

    .content-footer-inner {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}