/**
 * RewriterApp Homepage Styles
 */
:root {
    --color-bg: #f4f6f9;
    --color-surface: #ffffff;
    --color-text: #1a2332;
    --color-text-muted: #5a6a7e;
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #dbeafe;
    --color-accent: #10b981;
    --color-accent-dark: #059669;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-border: #e2e8f0;
    --color-key: #f8fafc;
    --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Cascadia Code', 'Consolas', 'Courier New', monospace;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.1);
    --shadow-lg: 0 8px 32px rgba(15, 23, 42, 0.12);
    --max-width: 1200px;
    --header-height: 64px;
}

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

html {
    scroll-behavior: smooth;
}

html.reduced-motion,
html.reduced-motion * {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    background-image:
        radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.04) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.04) 0%, transparent 50%);
    min-height: 100vh;
}

.skip-link {
    position: absolute;
    top: -100px;
    left: 1rem;
    background: var(--color-primary);
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    z-index: 9999;
    text-decoration: none;
}

.skip-link:focus {
    top: 1rem;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.25rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 700;
    font-size: 1.2rem;
}

.logo-icon { color: var(--color-primary); }

.header-nav {
    display: flex;
    gap: 1.25rem;
}

.header-nav a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.35rem 0;
    border-bottom: 2px solid transparent;
    transition: color 0.2s, border-color 0.2s;
}

.header-nav a:hover,
.header-nav a:focus {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
    outline: none;
}

/* Hero */
.hero {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.25rem 1.5rem;
    text-align: center;
}

.hero h1 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.2;
    margin: 0 0 0.75rem;
    letter-spacing: -0.02em;
}

.hero h1 .highlight {
    color: var(--color-primary);
}

.hero-intro {
    max-width: 640px;
    margin: 0 auto 1rem;
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 0.35rem 0.85rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    box-shadow: var(--shadow-sm);
}

.hero-badge svg {
    width: 14px;
    height: 14px;
    color: var(--color-accent);
}

/* Sections */
.content-section {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.25rem;
}

.content-section h2 {
    font-size: 1.5rem;
    margin: 0 0 1rem;
}

.content-section h3 {
    font-size: 1.15rem;
    margin: 1.5rem 0 0.5rem;
}

.content-section p {
    color: var(--color-text-muted);
    margin: 0 0 1rem;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
    margin-top: 1.5rem;
}

.info-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
}

.info-card h3 {
    margin-top: 0;
    font-size: 1rem;
    color: var(--color-text);
}

.info-card p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* FAQ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.faq-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: none;
    border: none;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    text-align: left;
    cursor: pointer;
}

.faq-question:hover,
.faq-question:focus {
    background: var(--color-key);
    outline: none;
}

.faq-question:focus-visible {
    box-shadow: inset 0 0 0 2px var(--color-primary);
}

.faq-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    transition: transform 0.2s;
}

.faq-item.open .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 0 1.25rem 1rem;
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.faq-item.open .faq-answer {
    display: block;
}

/* Footer */
.site-footer {
    background: var(--color-text);
    color: rgba(255, 255, 255, 0.7);
    margin-top: 3rem;
    padding: 2.5rem 1.25rem;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-brand .logo-text {
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
}

.footer-tagline {
    margin: 0.5rem 0 0;
    font-size: 0.9rem;
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-nav a:hover { color: #fff; }

.footer-copy {
    width: 100%;
    margin: 1rem 0 0;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 640px) {
    .header-nav { display: none; }
    .hero { padding-top: 1.5rem; }
}

/* Legal pages */
.legal-page {
    max-width: 800px;
}

.legal-page h1 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin: 0 0 0.5rem;
}

.legal-updated {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin: 0 0 2rem;
}

.legal-page h2 {
    font-size: 1.2rem;
    margin: 2rem 0 0.75rem;
    color: var(--color-text);
}

.legal-page p,
.legal-page li {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.legal-page ul {
    padding-left: 1.25rem;
    margin: 0 0 1rem;
}

.legal-page li {
    margin-bottom: 0.35rem;
}

.legal-page a {
    color: var(--color-primary);
}

.legal-back {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}

.legal-back:hover {
    text-decoration: underline;
}