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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --accent: #06b6d4;
    --green: #22c55e;
    --bg: #0a0a0f;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a2e;
    --bg-section: #0e0e16;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --text-faint: #64748b;
    --border: #1e1e2e;
    --gradient: linear-gradient(135deg, var(--primary), var(--accent));
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

/* === Navigation === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.3s ease;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: all 0.3s;
    border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 24px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
}

.btn-full {
    width: 100%;
}

/* === Hero === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(6, 182, 212, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary-light);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 520px;
    margin-bottom: 36px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-logos {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.logos-label {
    font-size: 0.75rem;
    color: var(--text-faint);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

.logo-pill {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 4px 14px;
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* === Chat Window (hero visual) === */
.chat-window {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.code-header {
    padding: 16px 20px;
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    align-items: center;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.dot.red { background: #ef4444; }
.dot.yellow { background: #eab308; }
.dot.green { background: #22c55e; }

.chat-title {
    margin-left: 12px;
    font-size: 0.9rem;
    font-weight: 600;
}

.chat-status {
    font-size: 0.75rem;
    color: var(--green);
    margin-left: auto;
}

.chat-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.msg {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.88rem;
    line-height: 1.55;
    max-width: 85%;
}

.msg-user {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text-muted);
    align-self: flex-end;
}

.msg-bot {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    align-self: flex-start;
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 12px 16px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: 12px;
    align-self: flex-start;
    width: fit-content;
}

.typing-indicator span {
    width: 7px;
    height: 7px;
    background: var(--primary-light);
    border-radius: 50%;
    animation: bounce 1.2s infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* === Section Commons === */
.section-eyebrow {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary-light);
    margin-bottom: 12px;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header h2,
.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 520px;
    margin: 0 auto;
}

/* === How it Works === */
.how-section {
    padding: 120px 0;
    background: var(--bg-section);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.how-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.steps {
    display: flex;
    flex-direction: column;
}

.step {
    display: flex;
    gap: 20px;
    padding: 28px 0;
    border-bottom: 1px solid var(--border);
}

.step:last-child {
    border-bottom: none;
}

.step-num {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 50%;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-light);
    flex-shrink: 0;
}

.step h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.step p {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.65;
}

/* === Pricing === */
.pricing {
    padding: 120px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.plan-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 40px;
    position: relative;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.plan-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-4px);
}

.plan-card.featured {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06), var(--bg-card));
}

.plan-badge {
    position: absolute;
    top: -13px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 5px 16px;
    border-radius: 100px;
    letter-spacing: 0.03em;
    white-space: nowrap;
}

.plan-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 12px;
    margin-bottom: 20px;
    color: var(--primary-light);
}

.plan-icon svg {
    width: 24px;
    height: 24px;
}

.plan-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.plan-desc {
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.6;
    margin-bottom: 24px;
}

.plan-price {
    margin-bottom: 4px;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1;
}

.price-period {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.plan-note {
    font-size: 0.78rem;
    color: var(--text-faint);
    margin-bottom: 28px;
    line-height: 1.5;
}

.plan-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
    flex: 1;
}

.plan-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.plan-features li::before {
    content: '';
    width: 18px;
    height: 18px;
    background: rgba(34, 197, 94, 0.15);
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 2px;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='%2322c55e' stroke-width='3' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
    background-size: 11px;
    background-repeat: no-repeat;
    background-position: center;
}

.pricing-footnote {
    text-align: center;
    margin-top: 32px;
    font-size: 0.85rem;
    color: var(--text-faint);
}

.pricing-footnote a {
    color: var(--primary-light);
    text-decoration: none;
}

.pricing-footnote a:hover {
    text-decoration: underline;
}

/* === For Who === */
.for-who {
    padding: 120px 0;
    background: var(--bg-section);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.who-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.who-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 36px;
    transition: all 0.3s;
}

.who-card:hover {
    border-color: var(--primary);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
}

.who-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 12px;
    margin-bottom: 20px;
    color: var(--primary-light);
}

.who-icon svg {
    width: 24px;
    height: 24px;
}

.who-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.who-card p {
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.65;
}

/* === FAQ === */
.faq {
    padding: 120px 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
}

.faq-item {
    background: var(--bg-card);
    padding: 36px;
}

.faq-item h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text);
}

.faq-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* === Closing CTA === */
.closing {
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.closing::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.closing-plans {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.closing-plan {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    min-width: 240px;
    max-width: 280px;
    flex: 1;
    text-align: left;
    transition: all 0.3s;
}

.closing-plan:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
}

.closing-plan.highlighted {
    border-color: var(--primary);
}

.closing-plan h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.closing-price {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 4px;
}

.closing-price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted);
}

.closing-note {
    font-size: 0.78rem;
    color: var(--text-faint);
    margin-bottom: 20px;
}

.closing-footnote {
    text-align: center;
    margin-top: 28px;
    font-size: 0.82rem;
    color: var(--text-faint);
    position: relative;
    z-index: 1;
}

/* === Footer === */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-brand {
    font-weight: 700;
    font-size: 1.1rem;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-faint);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s;
}

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

/* === Animations === */
.animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate.visible {
    opacity: 1;
    transform: translateY(0);
}

.plan-card:nth-child(2) .animate { transition-delay: 0.1s; }
.plan-card:nth-child(3) .animate { transition-delay: 0.2s; }
.who-card:nth-child(2) { transition-delay: 0.05s; }
.who-card:nth-child(3) { transition-delay: 0.1s; }
.who-card:nth-child(4) { transition-delay: 0.15s; }
.who-card:nth-child(5) { transition-delay: 0.2s; }
.who-card:nth-child(6) { transition-delay: 0.25s; }

/* === Responsive === */
@media (max-width: 1024px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 440px;
        margin: 0 auto;
    }

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

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-logos {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .how-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .who-grid {
        grid-template-columns: 1fr;
        max-width: 440px;
        margin: 0 auto;
    }

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

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 10, 15, 0.95);
        backdrop-filter: blur(20px);
        padding: 20px 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .closing-plans {
        flex-direction: column;
        align-items: center;
    }

    .closing-plan {
        max-width: 100%;
        width: 100%;
    }

    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }

    .hero-logos {
        flex-direction: column;
        gap: 8px;
    }

    .hero-logos .logos-label {
        margin-bottom: 4px;
    }
}