/* ═══ Reset & Base ═══ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --primary: #636EFA;
    --primary-dark: #4f5bd5;
    --accent: #00CC96;
    --dark: #0f172a;
    --dark-2: #1e293b;
    --dark-3: #334155;
    --gray: #94a3b8;
    --light-gray: #e2e8f0;
    --white: #ffffff;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0,0,0,0.12);
    --shadow-lg: 0 12px 48px rgba(0,0,0,0.18);
    --transition: all 0.3s ease;
}

html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', -apple-system, sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background: var(--white);
    overflow-x: hidden;
}
h1, h2, h3, h4 { font-family: 'Sora', sans-serif; font-weight: 700; line-height: 1.2; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ═══ Buttons ═══ */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-align: center;
}
.btn-primary {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}
.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99,110,250,0.35);
}
.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}
.btn-lg { padding: 16px 36px; font-size: 17px; }
.btn-block { display: block; width: 100%; }
.btn-nav { padding: 8px 20px; font-size: 14px; }

/* ═══ Navbar ═══ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
}
.navbar.scrolled {
    padding: 10px 0;
    border-bottom: 1px solid var(--light-gray);
    box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}
.nav-container { display: flex; align-items: center; justify-content: space-between; }
.logo img { height: 36px; }
.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}
.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--dark-3);
    transition: var(--transition);
}
.nav-links a:hover { color: var(--primary); }
.nav-login { font-weight: 600 !important; }

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ═══ Hero ═══ */
.hero {
    position: relative;
    padding: 160px 0 100px;
    text-align: center;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #f0f4ff 0%, #e8f4f8 50%, #f5f0ff 100%);
    z-index: -1;
}
.hero-bg::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(99,110,250,0.08) 0%, transparent 60%);
    border-radius: 50%;
}
.hero-badge {
    display: inline-block;
    background: rgba(99,110,250,0.1);
    color: var(--primary);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}
.hero h1 {
    font-size: clamp(36px, 5vw, 64px);
    margin-bottom: 24px;
    color: var(--dark);
}
.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: 18px;
    color: var(--dark-3);
    max-width: 680px;
    margin: 0 auto 36px;
    line-height: 1.7;
}
.hero-ctas { display: flex; gap: 16px; justify-content: center; margin-bottom: 32px; flex-wrap: wrap; }
.trust-badges {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-size: 14px;
    color: var(--gray);
}
.dot {
    width: 4px;
    height: 4px;
    background: var(--gray);
    border-radius: 50%;
    display: inline-block;
}

/* ═══ Stats ═══ */
.stats { padding: 60px 0; background: var(--dark); }
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}
.stat-card {
    text-align: center;
    padding: 32px 20px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(8px);
    transition: var(--transition);
}
.stat-card:hover {
    transform: translateY(-4px);
    background: rgba(255,255,255,0.08);
}
.stat-value {
    font-family: 'Sora', sans-serif;
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label { color: var(--gray); margin-top: 8px; font-size: 15px; }

/* ═══ Features ═══ */
.features { padding: 100px 0; }
.section-header {
    text-align: center;
    margin-bottom: 64px;
}
.section-header h2 {
    font-size: clamp(28px, 3.5vw, 42px);
    margin-bottom: 16px;
}
.section-header p {
    font-size: 18px;
    color: var(--dark-3);
    max-width: 600px;
    margin: 0 auto;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.feature-card {
    padding: 32px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--light-gray);
    transition: var(--transition);
    background: var(--white);
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.feature-icon {
    font-size: 36px;
    margin-bottom: 16px;
}
.feature-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}
.feature-card p {
    font-size: 14px;
    color: var(--dark-3);
    line-height: 1.6;
}

/* ═══ How It Works ═══ */
.how-it-works { padding: 100px 0; background: #f8fafc; }
.steps-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}
.step-card {
    flex: 1;
    max-width: 320px;
    padding: 40px 28px;
    background: var(--white);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.step-number {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Sora', sans-serif;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 20px;
}
.step-card h3 { font-size: 20px; margin-bottom: 12px; }
.step-card p { font-size: 15px; color: var(--dark-3); margin-bottom: 16px; }
.step-formats {
    display: inline-block;
    background: rgba(99,110,250,0.08);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}
.step-arrow {
    font-size: 32px;
    color: var(--gray);
    font-weight: 300;
}

/* ═══ Pricing ═══ */
.pricing { padding: 100px 0; }
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}
.pricing-card {
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    border: 2px solid var(--light-gray);
    text-align: center;
    position: relative;
    transition: var(--transition);
    background: var(--white);
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.pricing-card.popular {
    border-color: var(--primary);
    box-shadow: 0 8px 32px rgba(99,110,250,0.15);
}
.popular-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--white);
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}
.pricing-tier {
    font-family: 'Sora', sans-serif;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}
.pricing-price {
    font-family: 'Sora', sans-serif;
    font-size: 52px;
    font-weight: 800;
    margin-bottom: 4px;
}
.pricing-price span {
    font-size: 18px;
    font-weight: 500;
    color: var(--gray);
}
.pricing-card.popular .pricing-price { color: var(--primary); }
.pricing-trial {
    font-size: 14px;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 24px;
}
.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 32px;
}
.pricing-features li {
    padding: 8px 0;
    padding-left: 28px;
    position: relative;
    font-size: 15px;
    border-bottom: 1px solid #f1f5f9;
}
.pricing-features li::before {
    position: absolute;
    left: 0;
    font-size: 16px;
}
.pricing-features li.included::before { content: '✓'; color: var(--accent); font-weight: 700; }
.pricing-features li.excluded { color: var(--gray); }
.pricing-features li.excluded::before { content: '—'; color: var(--gray); }

/* ═══ FAQ ═══ */
.faq { padding: 100px 0; background: #f8fafc; }
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
    margin-bottom: 12px;
    border-radius: var(--radius);
    background: var(--white);
    border: 1px solid var(--light-gray);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item.active { border-color: var(--primary); box-shadow: 0 4px 16px rgba(99,110,250,0.08); }
.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    cursor: pointer;
    text-align: left;
    font-family: 'Inter', sans-serif;
}
.faq-question::after {
    content: '+';
    font-size: 22px;
    font-weight: 300;
    color: var(--primary);
    transition: var(--transition);
    flex-shrink: 0;
    margin-left: 16px;
}
.faq-item.active .faq-question::after { content: '−'; }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 24px 20px; color: var(--dark-3); font-size: 15px; line-height: 1.7; }

/* ═══ CTA Section ═══ */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--dark) 0%, #1a2744 100%);
    text-align: center;
}
.cta-content h2 {
    font-size: clamp(28px, 4vw, 42px);
    color: var(--white);
    margin-bottom: 16px;
}
.cta-content p { color: var(--gray); font-size: 18px; max-width: 600px; margin: 0 auto 32px; }
.cta-note { color: var(--gray); font-size: 14px; margin-top: 16px; }

/* ═══ Contact ═══ */
.contact { padding: 100px 0; }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    max-width: 900px;
    margin: 0 auto;
}
.contact-item { margin-bottom: 32px; }
.contact-item h4 { font-size: 16px; margin-bottom: 8px; }
.contact-item a { color: var(--primary); font-weight: 500; }
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.contact-form input, .contact-form textarea {
    padding: 14px 18px;
    border: 2px solid var(--light-gray);
    border-radius: 8px;
    font-size: 15px;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
    outline: none;
}
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--primary); }

/* ═══ Footer ═══ */
.footer { background: var(--dark); padding: 64px 0 32px; color: var(--gray); }
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}
.footer-brand img { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 280px; }
.footer-links h4 { color: var(--white); font-size: 15px; margin-bottom: 16px; }
.footer-links a { display: block; font-size: 14px; margin-bottom: 10px; transition: var(--transition); }
.footer-links a:hover { color: var(--white); }
.footer-bottom {
    border-top: 1px solid var(--dark-3);
    padding-top: 24px;
    font-size: 14px;
    text-align: center;
}

/* ═══ Responsive ═══ */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
    .mobile-toggle { display: flex; }
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow);
        border-top: 1px solid var(--light-gray);
    }
    .nav-links.open { display: flex; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: 1fr; }
    .steps-grid { flex-direction: column; }
    .step-arrow { transform: rotate(90deg); }
    .pricing-grid { grid-template-columns: 1fr; max-width: 420px; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero { padding: 130px 0 70px; }
    .hero-ctas { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
    .stat-value { font-size: 36px; }
    .pricing-price { font-size: 40px; }
}