/* ═══════════════════════════════════════════════════
   VOSUBA AI — Landing Page Stylesheet V3
   Design System: "Obsidian Ether" — deep navy, 
   purple/cyan gradient accents, glassmorphism
   Simplified: 6 sections, real product screenshots
   ═══════════════════════════════════════════════════ */

/* ─── Skip Link (WCAG 2.4.1) ─── */
.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    z-index: 9999;
    padding: 0.5rem 1rem;
    background: #8b5cf6;
    color: #fff;
    font-weight: 700;
    font-size: 0.875rem;
    border-radius: 0 0 0.5rem 0.5rem;
    text-decoration: none;
    transition: top 0.15s;
}
.skip-link:focus { top: 0; }

/* ─── CSS Variables ─── */
:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #0f1629;
    --bg-card: #141b2d;
    --bg-card-hover: #1a2340;
    --bg-elevated: #1e2744;

    --text-primary: #f0f2f8;
    --text-secondary: #9ba5c0;  /* upgraded from #8b95b0 — now ≥4.5:1 on bg-primary */
    --text-muted: #7a849e;       /* upgraded from #5a6580 — now ≥4.5:1 on bg-primary */

    --accent-purple: #8b5cf6;
    --accent-cyan: #06d6a0;
    --accent-blue: #6366f1;

    --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #06d6a0 100%);
    --gradient-subtle: linear-gradient(135deg, rgba(139,92,246,0.15) 0%, rgba(6,214,160,0.15) 100%);
    --gradient-border: linear-gradient(135deg, rgba(139,92,246,0.4) 0%, rgba(6,214,160,0.4) 100%);

    --border-color: rgba(139, 149, 176, 0.1);
    --border-hover: rgba(139, 149, 176, 0.2);

    --container-max: 1200px;
    --container-padding: 24px;
    --section-padding: 100px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset ─── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-family); background: var(--bg-primary); color: var(--text-primary); line-height: 1.6; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-padding); }

section { padding: var(--section-padding) 0; position: relative; }

.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 { font-size: 2.5rem; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 12px; }
.section-header p { font-size: 1.125rem; color: var(--text-secondary); max-width: 500px; margin: 0 auto; }

/* ─── Animations ─── */
[data-animate] { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
[data-animate].animate-in { opacity: 1; transform: translateY(0); }

/* ─── Gradient Text ─── */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ═══════════════ BUTTONS ═══════════════ */
.btn {
    display: inline-flex; align-items: center; gap: 10px;
    font-family: var(--font-family); font-weight: 600;
    border: none; border-radius: var(--radius-md); cursor: pointer;
    transition: all var(--transition-base); text-decoration: none;
    white-space: nowrap;
}
.btn-primary {
    background: var(--gradient-primary); color: white;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}
.btn-primary:hover {
    box-shadow: 0 8px 40px rgba(139, 92, 246, 0.5);
    transform: translateY(-2px);
}
.btn-ghost {
    background: rgba(255,255,255,0.06); color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-ghost:hover { background: rgba(255,255,255,0.1); border-color: var(--border-hover); }
.btn-outline {
    background: transparent; color: var(--text-primary);
    border: 1px solid var(--border-hover);
}
.btn-outline:hover { background: rgba(139, 92, 246, 0.08); border-color: var(--accent-purple); color: white; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-xl { padding: 18px 40px; font-size: 1.125rem; border-radius: var(--radius-lg); }
.btn-full { width: 100%; justify-content: center; padding: 14px 24px; font-size: 1rem; }

/* ═══════════════ NAVIGATION ═══════════════ */
#navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition-base);
    background: transparent;
}
#navbar.scrolled {
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 0;
}
.nav-container {
    max-width: var(--container-max); margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
    display: flex; align-items: center; gap: 10px;
    font-size: 1.25rem; font-weight: 800;
}
.nav-logo-img {
    width: 32px; height: 32px; border-radius: 8px;
    filter: drop-shadow(0 0 8px rgba(139, 92, 246, 0.4));
}
.logo-text { letter-spacing: -0.03em; }
.logo-ai {
    background: var(--gradient-primary);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.nav-links { display: flex; gap: 32px; }
.nav-links a {
    font-size: 0.9rem; color: var(--text-secondary);
    transition: color var(--transition-fast); font-weight: 500;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-cta {
    background: var(--gradient-primary); color: white;
    padding: 10px 22px; border-radius: var(--radius-md);
    font-weight: 600; font-size: 0.9rem;
    transition: all var(--transition-base);
    box-shadow: 0 2px 12px rgba(139, 92, 246, 0.25);
}
.nav-cta:hover { box-shadow: 0 4px 24px rgba(139, 92, 246, 0.45); transform: translateY(-1px); }

/* Mobile menu button */
.mobile-menu-btn {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 4px;
}
.mobile-menu-btn span {
    display: block; width: 22px; height: 2px;
    background: var(--text-primary); border-radius: 2px;
    transition: all var(--transition-fast);
}
.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-menu {
    display: none; position: fixed; top: 64px; left: 0; right: 0;
    background: rgba(10, 14, 26, 0.95); backdrop-filter: blur(20px);
    padding: 24px; flex-direction: column; gap: 16px; z-index: 999;
    border-bottom: 1px solid var(--border-color);
}
.mobile-menu.active { display: flex; }
.mobile-menu a { font-size: 1.1rem; color: var(--text-secondary); padding: 8px 0; }
.mobile-menu .nav-cta { text-align: center; margin-top: 8px; }

/* ═══════════════ HERO ═══════════════ */
#hero {
    padding-top: 140px; padding-bottom: 40px;
    text-align: center; position: relative; overflow: hidden;
}
.hero-bg-effects { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hero-orb {
    position: absolute; border-radius: 50%; filter: blur(100px);
    opacity: 0.15; transition: transform 0.3s ease;
}
.hero-orb-1 { width: 600px; height: 600px; background: var(--accent-purple); top: -200px; left: -100px; }
.hero-orb-2 { width: 400px; height: 400px; background: var(--accent-cyan); bottom: -100px; right: -50px; }
.hero-grid {
    position: absolute; inset: 0;
    background-image: linear-gradient(rgba(139,149,176,0.03) 1px, transparent 1px),
                       linear-gradient(90deg, rgba(139,149,176,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-content { position: relative; z-index: 1; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 20px; border-radius: 50px;
    background: rgba(139, 92, 246, 0.08);
    border: 1px solid rgba(139, 92, 246, 0.2);
    font-size: 0.85rem; color: var(--text-secondary); font-weight: 500;
    margin-bottom: 32px;
}
.badge-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent-cyan);
    box-shadow: 0 0 8px var(--accent-cyan);
    animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.3); }
}

#hero h1 {
    font-size: 4rem; font-weight: 900; letter-spacing: -0.04em;
    line-height: 1.1; margin-bottom: 24px;
}
.hero-subtitle {
    font-size: 1.2rem; color: var(--text-secondary);
    line-height: 1.7; margin-bottom: 40px; max-width: 600px; margin-left: auto; margin-right: auto;
}
.hero-ctas { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.hero-proof { display: flex; gap: 32px; justify-content: center; flex-wrap: wrap; margin-bottom: 20px; }
.proof-item {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.85rem; color: var(--text-secondary); /* was text-muted; raised for 4.5:1 */
}
.proof-item svg { color: var(--accent-cyan); flex-shrink: 0; }

/* ─── Hero Screenshot ─── */
.hero-screenshot {
    position: relative; max-width: 1100px; margin: 40px auto 0;
    padding: 0 var(--container-padding);
}
.hero-screenshot img {
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.5), 0 0 60px rgba(139, 92, 246, 0.08);
}
.screenshot-glow {
    position: absolute; inset: 10%; border-radius: 50%;
    background: radial-gradient(circle, rgba(139,92,246,0.12) 0%, transparent 70%);
    filter: blur(40px); pointer-events: none; z-index: -1;
}

/* ═══════════════ PRODUCT SHOWCASE ═══════════════ */
#product { padding-bottom: 60px; }

.showcase-tabs {
    display: flex; justify-content: center; gap: 8px;
    margin-bottom: 48px; flex-wrap: wrap;
}
.showcase-tab {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 24px; border-radius: var(--radius-md);
    background: transparent; border: 1px solid var(--border-color);
    color: var(--text-secondary); font-family: var(--font-family);
    font-size: 0.95rem; font-weight: 500; cursor: pointer;
    transition: all var(--transition-base);
}
.showcase-tab:hover { border-color: var(--border-hover); color: var(--text-primary); background: rgba(255,255,255,0.03); }
.showcase-tab.active {
    background: rgba(139, 92, 246, 0.1); border-color: var(--accent-purple);
    color: white;
}
.showcase-tab svg { opacity: 0.6; }
.showcase-tab.active svg { opacity: 1; }

.showcase-panel { display: none; }
.showcase-panel.active { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: center; }
.showcase-screenshot img {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    transition: box-shadow var(--transition-slow);
}
.showcase-screenshot img:hover {
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5), 0 0 40px rgba(139, 92, 246, 0.08);
}
.showcase-info h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 12px; }
.showcase-info p { color: var(--text-secondary); line-height: 1.7; margin-bottom: 20px; }
.showcase-features { display: flex; flex-direction: column; gap: 10px; }
.showcase-features li {
    display: flex; align-items: flex-start; gap: 10px;
    color: var(--text-secondary); font-size: 0.95rem; line-height: 1.5;
}
.showcase-features li::before {
    content: '→'; color: var(--accent-purple); font-weight: 600;
    flex-shrink: 0; margin-top: 1px;
}

/* ═══════════════ KEY BENEFITS ═══════════════ */
#features { padding-top: 40px; padding-bottom: 80px; }

.benefits-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.benefit-card {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius-lg); padding: 32px 28px;
    transition: all var(--transition-base);
}
.benefit-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}
.benefit-icon {
    width: 52px; height: 52px; border-radius: var(--radius-md);
    background: rgba(139, 92, 246, 0.1);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px; color: var(--accent-purple);
}
.benefit-icon-accent { background: rgba(99, 102, 241, 0.1); color: var(--accent-blue); }
.benefit-icon-green { background: rgba(6, 214, 160, 0.1); color: var(--accent-cyan); }
.benefit-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.benefit-card p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }

/* ═══════════════ PRICING ═══════════════ */
#pricing {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}
.pricing-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
    align-items: start;
}
.pricing-card {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius-xl); padding: 36px 32px;
    position: relative; transition: all var(--transition-base);
}
.pricing-card:hover { border-color: var(--border-hover); }
.pricing-card-featured {
    border-color: var(--accent-purple);
    background: linear-gradient(180deg, rgba(139,92,246,0.06) 0%, var(--bg-card) 40%);
    transform: scale(1.03);
    box-shadow: 0 0 60px rgba(139, 92, 246, 0.1);
}
.pricing-card-featured:hover { transform: scale(1.05); }
.pricing-badge {
    position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    background: var(--gradient-primary); color: white;
    padding: 6px 20px; border-radius: 50px;
    font-size: 0.8rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.05em; white-space: nowrap;
}
.pricing-tier { font-size: 1.1rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 12px; }
.pricing-price { display: flex; align-items: baseline; gap: 2px; margin-bottom: 8px; }
.price-currency { font-size: 1.5rem; font-weight: 700; color: var(--text-secondary); }
.price-amount { font-size: 3rem; font-weight: 900; letter-spacing: -0.03em; }
.price-label { font-size: 0.9rem; color: var(--text-muted); margin-left: 6px; }
.pricing-desc { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 24px; min-height: 40px; }

.pricing-features {
    display: flex; flex-direction: column; gap: 12px;
    margin-bottom: 28px; min-height: 200px;
}
.pricing-features li {
    display: flex; align-items: center; gap: 10px;
    font-size: 0.9rem; color: var(--text-secondary);
}
.pricing-features li svg { color: var(--accent-cyan); flex-shrink: 0; }
.feature-note { color: var(--text-muted); font-size: 0.8em; }
.pricing-req {
    margin-top: 12px; text-align: center;
    font-size: 0.75rem; color: var(--text-muted);
    letter-spacing: 0.02em;
}

/* ─── Enterprise Card ─── */
.enterprise-card {
    display: flex; align-items: center; justify-content: space-between;
    gap: 32px; flex-wrap: wrap;
    background: var(--bg-card); border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: var(--radius-xl); padding: 32px 40px;
    margin-top: 24px;
    background: linear-gradient(135deg, rgba(139,92,246,0.04) 0%, rgba(6,214,160,0.04) 100%);
}
.enterprise-left { display: flex; align-items: flex-start; gap: 20px; flex: 1; min-width: 280px; }
.enterprise-icon {
    width: 52px; height: 52px; flex-shrink: 0;
    border-radius: var(--radius-md); background: rgba(139, 92, 246, 0.1);
    display: flex; align-items: center; justify-content: center;
    color: var(--accent-purple);
}
.enterprise-left h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 6px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.enterprise-badge {
    display: inline-flex; font-size: 0.7rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.08em; background: rgba(6,214,160,0.12);
    color: var(--accent-cyan); border: 1px solid rgba(6,214,160,0.25);
    padding: 3px 10px; border-radius: 50px;
}
.enterprise-left p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }
.enterprise-right { display: flex; align-items: center; gap: 24px; flex-shrink: 0; }
.enterprise-price { display: flex; align-items: baseline; gap: 2px; }
.price-amount-sm { font-size: 2rem; font-weight: 900; letter-spacing: -0.03em; }


/* ═══════════════ FAQ ═══════════════ */
#faq { padding-bottom: 60px; }
.faq-list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius-md); overflow: hidden;
    transition: border-color var(--transition-base);
}
.faq-item[open] { border-color: rgba(139, 92, 246, 0.3); }
.faq-item summary {
    padding: 20px 24px; font-weight: 600; font-size: 1rem;
    cursor: pointer; display: flex; align-items: center; justify-content: space-between;
    list-style: none; color: var(--text-primary);
    transition: color var(--transition-fast);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:focus-visible {
    outline: 2px solid var(--accent-purple);
    outline-offset: 2px;
    border-radius: 4px;
}
.faq-item summary::after {
    content: '+'; font-size: 1.3rem; font-weight: 300;
    color: var(--text-secondary); transition: transform var(--transition-fast);
}
.faq-item[open] summary::after { content: '−'; }
.faq-item summary:hover { color: white; }
.faq-answer { padding: 0 24px 20px; }
.faq-answer p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

/* ─── AEO Quick Answer Block ─── */
.aeo-answer {
    background: rgba(6, 214, 160, 0.06);
    border: 1px solid rgba(6, 214, 160, 0.18);
    border-left: 4px solid var(--accent-cyan);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: 1.25rem 1.5rem;
    margin: 0 0 2.5rem;
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary);
}
.aeo-answer strong {
    color: var(--accent-cyan);
    font-weight: 700;
}

/* ═══════════════ BOTTOM CTA ═══════════════ */
#bottom-cta { padding: 40px 0 80px; }
.cta-card {
    text-align: center; padding: 64px 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color); border-radius: var(--radius-xl);
    position: relative; overflow: hidden;
}
.cta-card::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(139,92,246,0.08) 0%, transparent 60%);
    pointer-events: none;
}
.cta-card h2 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; position: relative; }
.cta-card p { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 32px; position: relative; }
.cta-card .btn { position: relative; }

/* ═══════════════ WAITLIST FORM ═══════════════ */
.waitlist-form {
    max-width: 480px;
    margin: 0 auto;
    width: 100%;
}
.waitlist-input-group {
    display: flex;
    gap: 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-hover);
    background: rgba(255, 255, 255, 0.04);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.waitlist-input-group:focus-within {
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15), 0 0 30px rgba(139, 92, 246, 0.08);
}
.waitlist-input {
    flex: 1;
    padding: 16px 20px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 1rem;
    outline: none;
    min-width: 0;
}
.waitlist-input::placeholder {
    color: var(--text-muted);
}
.waitlist-input-error {
    animation: shake 0.4s ease;
}
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    75% { transform: translateX(6px); }
}

.btn-waitlist {
    padding: 16px 28px;
    border-radius: 0;
    flex-shrink: 0;
    font-size: 0.95rem;
    white-space: nowrap;
}
.waitlist-btn-loading {
    display: inline-flex;
    align-items: center;
}
.spinner {
    animation: spin 1s linear infinite;
}
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.waitlist-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 12px;
    text-align: center;
}

/* ─── Waitlist Success ─── */
.waitlist-success {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
}
.waitlist-success-animate {
    animation: successPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
@keyframes successPop {
    0% { opacity: 0; transform: scale(0.8); }
    100% { opacity: 1; transform: scale(1); }
}
.waitlist-success-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 800;
    color: white;
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.3);
}
.waitlist-success-text {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ═══════════════ FOOTER ═══════════════ */
#footer {
    padding: 48px 0 32px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}
.footer-content { display: flex; justify-content: space-between; gap: 48px; margin-bottom: 40px; }
.footer-brand { max-width: 280px; }
.footer-brand .nav-logo { margin-bottom: 12px; }
.footer-brand p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }
.footer-links { display: flex; gap: 64px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h4 { font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-secondary); margin-bottom: 4px; }
.footer-col a { font-size: 0.9rem; color: var(--text-secondary); transition: color var(--transition-fast); }
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom { border-top: 1px solid var(--border-color); padding-top: 24px; }
.footer-bottom p { font-size: 0.8rem; color: var(--text-secondary); text-align: center; }

/* ═══════════════ RESPONSIVE ═══════════════ */
@media (max-width: 1024px) {
    .benefits-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .pricing-card-featured { transform: scale(1.02); }
    .showcase-panel.active { grid-template-columns: 1fr; gap: 32px; }
    .enterprise-card { padding: 24px 28px; }
}

@media (max-width: 768px) {
    :root { --section-padding: 64px; }

    #hero h1 { font-size: 2.5rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-proof { flex-direction: column; align-items: center; gap: 12px; }
    .hero-ctas { flex-direction: column; align-items: center; }
    .btn-xl { width: 100%; justify-content: center; }

    .nav-links { display: none; }
    nav .nav-cta { display: none; }
    .mobile-menu-btn { display: flex; }

    .section-header h2 { font-size: 1.8rem; }

    .showcase-tabs { gap: 6px; }
    .showcase-tab { padding: 10px 16px; font-size: 0.85rem; }
    .showcase-panel.active { grid-template-columns: 1fr; gap: 24px; }

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

    .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .pricing-card-featured { transform: none; }
    .enterprise-card { flex-direction: column; align-items: flex-start; gap: 20px; }
    .enterprise-right { flex-direction: row; align-items: center; justify-content: space-between; width: 100%; }

    .footer-content { flex-direction: column; gap: 32px; }
    .footer-links { gap: 32px; flex-wrap: wrap; }

    .cta-card { padding: 40px 24px; }
    .cta-card h2 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    #hero h1 { font-size: 2rem; }
    .showcase-tabs { flex-direction: column; align-items: stretch; }
    .showcase-tab { justify-content: center; }
    .footer-links { flex-direction: column; gap: 24px; }

    /* Waitlist: stack input + button vertically */
    .waitlist-input-group {
        flex-direction: column;
        border-radius: var(--radius-md);
    }
    .waitlist-input { text-align: center; }
    .btn-waitlist {
        border-radius: 0;
        padding: 14px 20px;
    }
}

/* ─── WCAG 2.4.7: Focus Indicators ─── */
:focus-visible {
    outline: 2px solid var(--accent-purple, #8b5cf6);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ─── Screen-reader utility ─── */
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0);
    white-space: nowrap; border: 0;
}

/* ─── WCAG 2.3.3: Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}