/* ============================================================
   FavoriteImage.com — Global Stylesheet
   Mobile-First, SEO/AEO Optimized, Dark Theme
   ============================================================ */

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

:root {
    --bg: #0b0b0f;
    --surface: #13131a;
    --surface-2: #1c1c28;
    --surface-3: #242436;
    --border: #2a2a3a;
    --text: #e8e8f0;
    --text-dim: #9090a8;
    --text-muted: #6a6a80;
    --accent: #7c5cfc;
    --accent-light: #9b80ff;
    --accent-glow: rgba(124, 92, 252, 0.25);
    --pink: #f06;
    --cyan: #00d4ff;
    --gold: #ffc857;
    --green: #34d399;
    --red: #f87171;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --max-w: 1200px;
    --max-w-narrow: 800px;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    --shadow: 0 8px 40px rgba(0,0,0,0.3);
    --shadow-sm: 0 2px 12px rgba(0,0,0,0.2);
    --transition: 0.25s ease;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--cyan); }

/* ---- SKIP LINK (Accessibility) ---- */
.skip-link {
    position: absolute; top: -100px; left: 0;
    background: var(--accent); color: #fff; padding: 0.5rem 1rem;
    z-index: 9999; font-size: 0.9rem;
}
.skip-link:focus { top: 0; }

/* ---- NAV ---- */
nav[aria-label="Main navigation"] {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(11, 11, 15, 0.92);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}
.nav-inner {
    max-width: var(--max-w); margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.75rem 1.5rem;
}
.logo { font-size: 1.25rem; font-weight: 700; color: var(--text); text-decoration: none; }
.logo span { color: var(--accent-light); }
.nav-links { display: flex; gap: 1.5rem; list-style: none; align-items: center; }
.nav-links a {
    color: var(--text-dim); text-decoration: none; font-size: 0.9rem;
    transition: color var(--transition); padding: 0.25rem 0;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--accent-light); }
.nav-cta {
    background: var(--accent); color: #fff !important; padding: 0.45rem 1rem;
    border-radius: 50px; font-weight: 600; font-size: 0.85rem;
}
.nav-cta:hover { background: var(--accent-light); }

/* Mobile Menu */
.menu-toggle {
    display: none; background: none; border: none; color: var(--text);
    font-size: 1.5rem; cursor: pointer; padding: 0.25rem;
}
@media (max-width: 768px) {
    .menu-toggle { display: block; }
    .nav-links {
        display: none; position: absolute; top: 100%; left: 0; right: 0;
        background: rgba(11, 11, 15, 0.98); backdrop-filter: blur(20px);
        flex-direction: column; padding: 1rem 1.5rem 1.5rem; gap: 0.75rem;
        border-bottom: 1px solid var(--border);
    }
    .nav-links.open { display: flex; }
    .nav-links a { font-size: 1rem; padding: 0.5rem 0; }
}

/* ---- HOMEPAGE HERO ---- */
.hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    text-align: center; padding: 6rem 1.5rem 4rem;
    background:
        radial-gradient(ellipse 60% 50% at 50% 0%, rgba(124, 92, 252, 0.12) 0%, transparent 70%),
        radial-gradient(ellipse 40% 40% at 80% 20%, rgba(0, 212, 255, 0.06) 0%, transparent 60%),
        var(--bg);
}
.hero-content { max-width: 780px; }
.hero h1 {
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    font-weight: 800; line-height: 1.15; margin-bottom: 1.25rem;
    background: linear-gradient(135deg, var(--text) 0%, var(--accent-light) 50%, var(--cyan) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; color: transparent;
}
.hero p {
    font-size: 1.2rem; color: var(--text-dim); max-width: 560px;
    margin: 0 auto 2.5rem;
}
.hero-ctas { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ---- FORM GRID ---- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--text-dim); }
.form-group input,
.form-group select,
.form-group textarea {
    background: var(--surface-2); border: 1px solid var(--border);
    border-radius: 8px; padding: 0.7rem 0.9rem; color: var(--text);
    font-size: 0.95rem; font-family: inherit; transition: border-color var(--transition);
    width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { outline: none; border-color: var(--accent); }
.form-group textarea { resize: vertical; min-height: 80px; }

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

/* ---- BREADCRUMBS ---- */
.breadcrumbs {
    max-width: var(--max-w); margin: 0 auto;
    padding: 5.5rem 1.5rem 0; font-size: 0.85rem; color: var(--text-muted);
}
.breadcrumbs a { color: var(--text-dim); }
.breadcrumbs a:hover { color: var(--accent-light); }
.breadcrumbs span { margin: 0 0.4rem; }

/* ---- PAGE HERO ---- */
.page-hero {
    padding: 7rem 1.5rem 3rem; text-align: center;
    background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(124, 92, 252, 0.1) 0%, transparent 70%), var(--bg);
}
.page-hero h1 {
    font-size: clamp(2rem, 4.5vw, 3.25rem); font-weight: 800; line-height: 1.15;
    margin-bottom: 1rem; max-width: 800px; margin-left: auto; margin-right: auto;
    background: linear-gradient(135deg, var(--text) 0%, var(--accent-light) 50%, var(--cyan) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.page-hero .subtitle {
    font-size: 1.15rem; color: var(--text-dim); max-width: 620px;
    margin: 0 auto 2rem; line-height: 1.6;
}
.page-hero .hero-meta {
    display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap;
    font-size: 0.85rem; color: var(--text-muted);
}
.page-hero .hero-meta span { display: flex; align-items: center; gap: 0.35rem; }

/* ---- MAIN CONTENT ---- */
main { padding-bottom: 4rem; }

/* ---- CONTAINER ---- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.container-narrow { max-width: var(--max-w-narrow); margin: 0 auto; padding: 0 1.5rem; }

/* ---- SECTION LABELS ---- */
.section-label {
    display: inline-block; font-size: 0.75rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.15em; color: var(--accent-light);
    margin-bottom: 0.75rem;
}
.section-title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem); font-weight: 700;
    margin-bottom: 1rem; line-height: 1.2;
}
.section-subtitle {
    color: var(--text-dim); max-width: 600px; margin-bottom: 3rem;
    font-size: 1.05rem; line-height: 1.6;
}
section { padding: 4rem 1.5rem; }

/* ---- BUTTONS ---- */
.btn {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.85rem 1.75rem; border-radius: 50px; font-size: 1rem;
    font-weight: 600; text-decoration: none; transition: all var(--transition);
    cursor: pointer; border: none; font-family: var(--font);
}
.btn-primary {
    background: var(--accent); color: #fff;
    box-shadow: 0 0 24px var(--accent-glow);
}
.btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); color: #fff; }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent-light); }
.btn-sm { padding: 0.55rem 1.25rem; font-size: 0.9rem; }

/* ---- ARTICLE CONTENT ---- */
.article-content {
    max-width: var(--max-w-narrow); margin: 0 auto;
    padding: 2rem 1.5rem 4rem; font-size: 1.05rem;
}
.article-content h2 {
    font-size: 1.75rem; font-weight: 700; margin: 3rem 0 1rem;
    padding-top: 1rem; border-top: 1px solid var(--border);
    color: var(--text);
}
.article-content h3 {
    font-size: 1.35rem; font-weight: 600; margin: 2.5rem 0 0.75rem;
    color: var(--text);
}
.article-content h4 {
    font-size: 1.1rem; font-weight: 600; margin: 2rem 0 0.5rem;
    color: var(--accent-light);
}
.article-content p { margin-bottom: 1.25rem; color: var(--text-dim); line-height: 1.8; }
.article-content ul, .article-content ol {
    margin: 1rem 0 1.5rem 1.5rem; color: var(--text-dim);
}
.article-content li { margin-bottom: 0.5rem; line-height: 1.7; }
.article-content strong { color: var(--text); }
.article-content blockquote {
    border-left: 3px solid var(--accent); padding: 1rem 1.5rem;
    margin: 1.5rem 0; background: var(--surface); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-dim); font-style: italic;
}
.article-content code {
    background: var(--surface-2); padding: 0.15rem 0.45rem;
    border-radius: 4px; font-size: 0.9em; color: var(--gold);
    font-family: var(--font-mono);
}
.article-content pre {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 1.25rem; margin: 1.5rem 0;
    overflow-x: auto; font-size: 0.9rem; line-height: 1.6;
}
.article-content pre code {
    background: none; padding: 0; color: var(--gold);
}

/* ---- ANSWER BOX (AEO) ---- */
.answer-box {
    background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
    border: 1px solid var(--accent); border-radius: var(--radius);
    padding: 1.75rem 2rem; margin: 2rem 0;
    box-shadow: 0 0 20px var(--accent-glow);
}
.answer-box h3 { color: var(--accent-light); font-size: 1.1rem; margin-bottom: 0.75rem; }
.answer-box p { color: var(--text); margin-bottom: 0; font-size: 1rem; line-height: 1.7; }
.answer-box ul { margin: 0.75rem 0 0 1.25rem; color: var(--text); }
.answer-box li { margin-bottom: 0.35rem; }

/* ---- TABLE OF CONTENTS ---- */
.toc {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 1.5rem 2rem; margin: 2rem 0;
}
.toc h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.75rem; color: var(--text); }
.toc ol { margin: 0 0 0 1.25rem; }
.toc li { margin-bottom: 0.4rem; }
.toc a { color: var(--text-dim); font-size: 0.95rem; }
.toc a:hover { color: var(--accent-light); }

/* ---- INFO CARDS / FEATURE GRID ---- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; margin: 2rem 0; }
.card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 1.75rem;
    transition: border-color var(--transition), transform var(--transition);
}
.card:hover { border-color: var(--accent); transform: translateY(-3px); }
.card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; color: var(--text); }
.card h4 { font-size: 1rem; margin-bottom: 0.5rem; color: var(--accent-light); }
.card p { color: var(--text-dim); font-size: 0.9rem; line-height: 1.6; }
.card .tag {
    display: inline-block; margin-top: 1rem; font-size: 0.75rem;
    padding: 0.3rem 0.7rem; border-radius: 50px;
    background: var(--accent-glow); color: var(--accent-light); font-weight: 600;
}

/* ---- COMPARISON TABLE ---- */
.comparison-table { width: 100%; border-collapse: collapse; margin: 2rem 0; font-size: 0.9rem; }
.comparison-table th {
    background: var(--surface-2); color: var(--accent-light); font-weight: 600;
    padding: 0.85rem 1rem; text-align: left; border-bottom: 2px solid var(--accent);
    position: sticky; top: 60px; z-index: 10;
}
.comparison-table td {
    padding: 0.75rem 1rem; border-bottom: 1px solid var(--border);
    color: var(--text-dim); vertical-align: top;
}
.comparison-table tr:hover td { background: var(--surface); }
.comparison-table .check { color: var(--green); }
.comparison-table .cross { color: var(--red); }
@media (max-width: 768px) {
    .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 2rem -1.5rem; padding: 0 1.5rem; }
    .comparison-table { min-width: 600px; }
}

/* ---- VIDEO EMBED ---- */
.video-embed {
    position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;
    border-radius: var(--radius); margin: 2rem 0;
    border: 1px solid var(--border);
}
.video-embed iframe {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    border: 0;
}

/* ---- PROMPT BLOCK ---- */
.prompt-block {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 1.5rem; margin: 1.5rem 0;
}
.prompt-block .prompt-label {
    font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.1em; color: var(--accent-light); margin-bottom: 0.75rem;
}
.prompt-block .prompt-text {
    background: var(--bg); border-radius: var(--radius-sm);
    padding: 1rem; font-size: 0.9rem; color: var(--gold);
    line-height: 1.6; white-space: pre-wrap; word-break: break-word;
    font-family: var(--font-mono);
}
.prompt-block .prompt-negative {
    color: var(--red); margin-top: 0.75rem;
}

/* ---- FAQ SECTION ---- */
.faq-section { margin: 3rem 0; }
.faq-section h2 { border-top: none; }
.faq-item {
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    margin-bottom: 0.75rem; overflow: hidden;
}
.faq-question {
    width: 100%; background: var(--surface); border: none;
    padding: 1.1rem 1.25rem; text-align: left; cursor: pointer;
    color: var(--text); font-size: 1rem; font-weight: 600;
    font-family: var(--font); display: flex; justify-content: space-between;
    align-items: center; transition: background var(--transition);
}
.faq-question:hover { background: var(--surface-2); }
.faq-question::after { content: '+'; font-size: 1.25rem; color: var(--accent-light); transition: transform var(--transition); }
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer {
    display: none; padding: 0 1.25rem 1.25rem; color: var(--text-dim);
    font-size: 0.95rem; line-height: 1.7;
}
.faq-item.open .faq-answer { display: block; }

/* ---- PROS/CONS ---- */
.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1.5rem 0; }
.pros, .cons {
    background: var(--surface); border-radius: var(--radius-sm); padding: 1.25rem;
}
.pros h4 { color: var(--green); margin-bottom: 0.75rem; }
.cons h4 { color: var(--red); margin-bottom: 0.75rem; }
.pros li, .cons li { font-size: 0.9rem; color: var(--text-dim); margin-bottom: 0.35rem; }
@media (max-width: 600px) { .pros-cons { grid-template-columns: 1fr; } }

/* ---- STAT CARDS ---- */
.stats-row { display: flex; gap: 1.5rem; flex-wrap: wrap; margin: 2rem 0; justify-content: center; }
.stat-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 1.5rem 2rem; text-align: center;
    flex: 1; min-width: 150px;
}
.stat-card .number { font-size: 2rem; font-weight: 800; color: var(--accent-light); }
.stat-card .label { font-size: 0.85rem; color: var(--text-dim); margin-top: 0.25rem; }

/* ---- STEP CARDS ---- */
.step-cards { counter-reset: step-count; }
.step-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 1.75rem 1.75rem 1.75rem 4rem;
    margin-bottom: 1rem; position: relative; counter-increment: step-count;
}
.step-card::before {
    content: counter(step-count);
    position: absolute; left: 1.25rem; top: 1.75rem;
    width: 2rem; height: 2rem; border-radius: 50%;
    background: var(--accent); color: #fff; font-size: 0.85rem; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}
.step-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; color: var(--text); }
.step-card p { color: var(--text-dim); font-size: 0.95rem; margin: 0; }

/* ---- RELATED ARTICLES ---- */
.related-articles { margin: 4rem 0 0; padding-top: 2rem; border-top: 1px solid var(--border); }
.related-articles h3 { font-size: 1.25rem; margin-bottom: 1.25rem; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1rem; }
.related-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 1.25rem;
    transition: border-color var(--transition);
}
.related-card:hover { border-color: var(--accent); }
.related-card h4 { font-size: 1rem; margin-bottom: 0.35rem; }
.related-card p { font-size: 0.85rem; color: var(--text-dim); margin: 0; }

/* ---- CTA BANNER ---- */
.cta-banner {
    background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
    border: 1px solid var(--accent); border-radius: var(--radius);
    padding: 2.5rem; text-align: center; margin: 3rem 0;
}
.cta-banner h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
.cta-banner p { color: var(--text-dim); margin-bottom: 1.5rem; }

/* ---- FOOTER ---- */
footer {
    border-top: 1px solid var(--border); padding: 3rem 1.5rem;
    background: var(--surface);
}
.footer-grid {
    max-width: var(--max-w); margin: 0 auto;
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem;
    margin-bottom: 2rem;
}
.footer-col h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 0.75rem; color: var(--text); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.4rem; }
.footer-col a { color: var(--text-dim); font-size: 0.85rem; }
.footer-col a:hover { color: var(--accent-light); }
.footer-bottom {
    max-width: var(--max-w); margin: 0 auto; padding-top: 1.5rem;
    border-top: 1px solid var(--border); text-align: center;
    font-size: 0.85rem; color: var(--text-muted);
}
.footer-bottom a { color: var(--accent-light); }

/* ---- UTILITY ---- */
.text-center { text-align: center; }
.text-accent { color: var(--accent-light); }
.text-gold { color: var(--gold); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ---- RESPONSIVE FINAL ---- */
@media (max-width: 480px) {
    section { padding: 3rem 1rem; }
    .article-content { padding: 1.5rem 1rem 3rem; }
    .page-hero { padding: 6rem 1rem 2rem; }
    .answer-box { padding: 1.25rem; }
    .card-grid { grid-template-columns: 1fr; }
    .stats-row { flex-direction: column; }
    .stat-card { min-width: unset; }
}