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

:root {
    --bg-dark: #0a0a0a;
    --bg-card: #111111;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-green: #00ff88;
    --accent-green-dark: #00cc6f;
    --border-color: #1f1f1f;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ── Header ── */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    width: 24px;
    height: 24px;
    background: var(--accent-green);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-dark);
    font-weight: 800;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
    cursor: pointer;
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ── Page Hero (inner pages) ── */
.page-hero {
    padding: 8rem 2rem 4rem;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.page-hero h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.page-hero h1 .highlight {
    color: var(--accent-green);
}

.page-hero p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ── Sections ── */
.section {
    max-width: 1200px;
    margin: 6rem auto;
    padding: 0 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ── Feature Cards ── */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--accent-green);
    transform: translateY(-4px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 255, 136, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ── Steps ── */
.steps-section {
    background: var(--bg-card);
    padding: 6rem 2rem;
    margin: 6rem 0;
}

.steps-container {
    max-width: 1000px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    align-items: flex-start;
}

.step:last-child {
    margin-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: rgba(0, 255, 136, 0.1);
    border: 2px solid var(--accent-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-green);
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.step-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
}

.step-tip {
    display: inline-block;
    background: rgba(0, 255, 136, 0.08);
    border: 1px solid rgba(0, 255, 136, 0.2);
    border-radius: 6px;
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    color: var(--accent-green);
    margin-top: 0.75rem;
}

/* ── FAQ ── */
.faq-section {
    max-width: 800px;
    margin: 6rem auto;
    padding: 0 2rem;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    color: var(--text-primary);
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s;
    gap: 1rem;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    padding: 0 1.5rem;
    color: var(--text-secondary);
}

.faq-item.active .faq-answer {
    max-height: 400px;
    padding: 0 1.5rem 1.5rem;
}

.faq-icon {
    flex-shrink: 0;
    transition: transform 0.3s;
}

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

/* ── Long-form Content Pages (Privacy, Terms) ── */
.content-page {
    max-width: 820px;
    margin: 0 auto;
    padding: 8rem 2rem 6rem;
}

.content-page h1 {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.content-page .subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.content-page h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
}

.content-page h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--accent-green);
}

.content-page p {
    color: var(--text-secondary);
    line-height: 1.85;
    margin-bottom: 1rem;
}

.content-page ul,
.content-page ol {
    color: var(--text-secondary);
    line-height: 1.85;
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.content-page li {
    margin-bottom: 0.4rem;
}

.content-page a {
    color: var(--accent-green);
    text-decoration: none;
}

.content-page a:hover {
    text-decoration: underline;
}

.content-page .last-updated {
    font-size: 0.85rem;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* ── Footer ── */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

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

.share-buttons-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 1rem;
}

.share-btn-footer {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.share-btn-footer:hover {
    background: var(--accent-green);
    color: var(--bg-dark);
    border-color: var(--accent-green);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .page-hero {
        padding: 7rem 1.5rem 3rem;
    }

    .page-hero h1 {
        font-size: 2.2rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .content-page {
        padding: 7rem 1.5rem 4rem;
    }

    .content-page h1 {
        font-size: 2rem;
    }

    .step {
        flex-direction: column;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ── Animations ── */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}