/* ========================================
   DivergenceBot Landing — Bybit-style dark theme
   ======================================== */

:root {
    --bg-primary: #0b0e11;
    --bg-secondary: #12161c;
    --bg-card: #181c23;
    --bg-card-hover: #1e2329;
    --accent: #f7a600;
    --accent-dim: rgba(247, 166, 0, 0.15);
    --accent-glow: rgba(247, 166, 0, 0.25);
    --green: #20b26c;
    --green-dim: rgba(32, 178, 108, 0.15);
    --red: #ef4444;
    --red-dim: rgba(239, 68, 68, 0.15);
    --text-primary: #eaecef;
    --text-secondary: #b7bdc6;
    --text-tertiary: #848e9c;
    --border: rgba(255, 255, 255, 0.06);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

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

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

.accent { color: var(--accent); }
.green { color: var(--green); }
.red { color: var(--red); }

/* ===== NAV ===== */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
    max-width: 1120px;
    margin: 0 auto;
    padding: 20px 24px;
    position: relative;
    z-index: 10;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.logo-icon {
    color: var(--accent);
    font-size: 22px;
}

.logo-candles {
    vertical-align: middle;
    margin-right: 4px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-btn {
    background: transparent;
    border: 1px solid rgba(247, 166, 0, 0.4);
    color: var(--accent);
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
}

.nav-btn:hover {
    background: var(--accent-dim);
    border-color: var(--accent);
}

/* ===== HERO ===== */
.hero {
    position: relative;
    display: flex;
    flex-direction: column;
}

.hero-glow {
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse, rgba(247, 166, 0, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-grid {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: 60px;
    max-width: 1120px;
    margin: 0 auto;
    padding: 80px 24px 60px;
    position: relative;
    z-index: 2;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    text-align: left;
}

.hero-badge {
    display: inline-block;
    background: var(--accent-dim);
    color: var(--accent);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(32px, 4vw, 50px);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 560px;
    margin-bottom: 20px;
    line-height: 1.7;
}

.hero-bullets {
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.hero-bullets li {
    font-size: 15px;
    color: var(--text-secondary);
    padding-left: 24px;
    position: relative;
    line-height: 1.5;
}

.hero-bullets li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 7px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
}

.hero-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 48px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent);
    color: #0b0e11;
}

.btn-primary:hover {
    background: #ffb820;
    box-shadow: 0 0 30px rgba(247, 166, 0, 0.3);
}

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

.btn-ghost:hover {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.03);
}

.btn-video {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 14px 8px;
    margin-left: 12px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s;
}

.btn-video:hover {
    color: var(--accent);
}

.btn-lg {
    padding: 18px 48px;
    font-size: 17px;
    border-radius: 10px;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.stat-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 13px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 2px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

/* Hero Image — Signal Screenshot */
.hero-image {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    padding-top: 55px;
}

.hero-signal-img {
    width: 100%;
    max-width: 540px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(247, 166, 0, 0.08);
}

.hero-previews {
    display: flex;
    gap: 10px;
    margin-top: 16px;
    max-width: 340px;
    width: 100%;
}

.preview-thumb {
    flex: 1;
    min-width: 0;
    height: 140px;
    object-fit: cover;
    object-position: top;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.2s;
    opacity: 0.8;
}

.preview-thumb:hover {
    opacity: 1;
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s;
}

.lightbox.active {
    opacity: 1;
    pointer-events: all;
}

.lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
}

.lightbox-img {
    position: relative;
    max-height: 90vh;
    max-width: 90vw;
    border-radius: var(--radius);
    cursor: zoom-out;
}

/* Video Modal */
.video-modal {
    position: fixed;
    inset: 0;
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s;
}

.video-modal.active {
    opacity: 1;
    pointer-events: all;
}

.video-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
}

.video-modal-content {
    position: relative;
    width: 90vw;
    max-width: 900px;
}

.video-modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 32px;
    cursor: pointer;
    transition: color 0.2s;
    line-height: 1;
}

.video-modal-close:hover {
    color: var(--text-primary);
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    border-radius: var(--radius);
    overflow: hidden;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* ===== SECTIONS ===== */
.section {
    padding: 100px 0;
}

.section-dark {
    background: var(--bg-secondary);
}

.section-badge {
    display: inline-block;
    background: var(--accent-dim);
    color: var(--accent);
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section h2 {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 48px;
}

/* ===== EXPLAIN ===== */
.explain-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.explain-text p {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 16px;
    line-height: 1.8;
}

.explain-text .highlight {
    color: var(--text-primary);
    font-weight: 500;
    padding: 16px;
    background: var(--accent-dim);
    border-left: 3px solid var(--accent);
    border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
}

.div-types {
    display: flex;
    gap: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.div-type-card {
    flex: 1;
    padding: 24px;
}

.div-type-divider {
    width: 1px;
    background: var(--border);
}

.div-type-title {
    font-size: 15px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.div-svg {
    width: 100%;
    height: auto;
}

/* ===== FEATURES ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: rgba(247, 166, 0, 0.2);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    font-size: 28px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== PIPELINE ===== */
.pipeline-grid {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 40px;
    align-items: center;
    max-width: 820px;
    margin: 0 auto;
}

.pipeline-visual {
    display: flex;
    justify-content: center;
}

.funnel-svg {
    width: 100%;
    max-width: 260px;
    height: auto;
}

.pipeline {
    max-width: 600px;
}

.pipe-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.pipe-num {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-dim);
    color: var(--accent);
    font-size: 16px;
    font-weight: 800;
    border-radius: 12px;
    border: 1px solid rgba(247, 166, 0, 0.2);
}

.pipe-content h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
    margin-top: 2px;
}

.pipe-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.pipe-connector {
    width: 2px;
    height: 28px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    margin-left: 23px;
    opacity: 0.3;
}

/* ===== SIGNAL EXAMPLE ===== */
.signal-example {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.tg-message-img {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.tg-screenshot {
    width: 100%;
    max-width: 340px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.tg-message {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.tg-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border);
}

.tg-bot-name {
    font-weight: 700;
    font-size: 14px;
    color: var(--accent);
}

.tg-time {
    font-size: 12px;
    color: var(--text-tertiary);
}

.tg-body {
    padding: 20px;
    font-family: 'Inter', monospace;
}

.tg-signal-title {
    font-size: 15px;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.tg-coin {
    color: var(--accent);
    font-weight: 700;
}

.tg-line {
    font-size: 13px;
    padding: 3px 0;
    color: var(--text-secondary);
}

.tg-key {
    color: var(--text-tertiary);
}

.tg-divider {
    height: 1px;
    background: var(--border);
    margin: 10px 0;
}

.tg-quality {
    color: var(--accent);
    font-weight: 700;
}

.tg-score {
    color: var(--text-tertiary);
    margin-left: 8px;
}

.tg-small {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

.signal-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sf-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.sf-icon {
    font-size: 24px;
    flex-shrink: 0;
    margin-top: 2px;
}

.sf-item strong {
    display: block;
    font-size: 15px;
    margin-bottom: 4px;
}

.sf-item p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== CTA ===== */
.cta-section {
    padding: 120px 0;
}

.cta-container {
    text-align: center;
    position: relative;
}

.cta-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 300px;
    background: radial-gradient(ellipse, rgba(247, 166, 0, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.cta-container h2 {
    margin-bottom: 16px;
    position: relative;
}

.cta-container p {
    color: var(--text-secondary);
    font-size: 17px;
    margin-bottom: 32px;
    position: relative;
}

.cta-container .btn {
    position: relative;
}

/* ===== AUDIENCE ===== */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.audience-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    transition: all 0.3s;
}

.audience-card:hover {
    border-color: rgba(247, 166, 0, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.audience-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.audience-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
}

.audience-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== PRICING ===== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    align-items: stretch;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    position: relative;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.pricing-card .pricing-features {
    flex: 1;
}

.pricing-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.pricing-popular {
    border-color: var(--accent);
    box-shadow: 0 0 30px rgba(247, 166, 0, 0.1);
}

.pricing-label {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: #0b0e11;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-period {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.pricing-price {
    font-size: 36px;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.pricing-currency {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-secondary);
}

.pricing-save {
    font-size: 13px;
    color: var(--green);
    margin-bottom: 8px;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 20px 0 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: left;
}

.pricing-features li {
    font-size: 14px;
    color: var(--text-secondary);
    padding-left: 22px;
    position: relative;
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}

.pricing-btn {
    width: 100%;
}

/* ===== MARATHON ===== */
.marathon-container {
    text-align: center;
    max-width: 680px;
}

.marathon-desc {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}

.marathon-desc strong {
    color: var(--accent);
}

/* ===== FAQ ===== */
.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);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color 0.2s;
}

.faq-item[open] {
    border-color: rgba(247, 166, 0, 0.3);
}

.faq-item summary {
    padding: 18px 24px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.2s;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '›';
    font-size: 22px;
    color: var(--text-tertiary);
    transition: transform 0.2s;
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item[open] summary::after {
    transform: rotate(90deg);
    color: var(--accent);
}

.faq-item summary:hover {
    color: var(--accent);
}

.faq-item p {
    padding: 0 24px 18px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

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

.footer-content {
    text-align: center;
}

.footer-logo {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.footer-disclaimer {
    font-size: 13px;
    color: var(--text-tertiary);
    max-width: 480px;
    margin: 0 auto 8px;
    line-height: 1.6;
}

.footer-copy {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: left;
        padding: 20px 24px 40px;
    }

    .hero-content {
        align-items: flex-start;
        text-align: left;
    }

    .hero-image {
        order: 1;
        align-items: center;
    }

    .hero-image .hero-signal-img {
        max-width: 400px;
    }
}

@media (max-width: 768px) {
    .nav-link {
        display: none;
    }

    .hero-stats {
        display: flex;
        flex-wrap: nowrap;
        gap: 16px;
        justify-content: flex-start;
    }

    .stat-divider {
        display: none;
    }

    .stat-value {
        font-size: 20px;
    }

    .stat-label {
        font-size: 10px;
    }

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

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

    .signal-example {
        grid-template-columns: 1fr;
    }

    .pipeline-visual {
        display: none;
    }

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

    .hero-actions {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin-bottom: 24px;
    }

    .section {
        padding: 60px 0;
    }

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

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 360px;
        margin: 0 auto;
    }

    .hero-image {
        padding-top: 0;
    }

    .hero-glow,
    .cta-glow {
        display: none;
    }

    .audience-icon {
        display: none;
    }

    .div-types {
        flex-direction: column;
    }

    .div-type-divider {
        width: 100%;
        height: 1px;
    }

    .hero-previews {
        max-width: 100%;
    }

    .tg-screenshot {
        max-width: 280px;
    }
}

@media (max-width: 480px) {
    .nav {
        padding: 16px;
    }

    .hero-content {
        padding: 20px 16px 10px;
    }

    .hero-desc {
        font-size: 16px;
    }

    .features-grid {
        gap: 12px;
    }

    .feature-card {
        padding: 20px;
    }
}

/* ===== ANIMATIONS ===== */
@media (prefers-reduced-motion: no-preference) {
    .feature-card,
    .pipe-step,
    .sf-item {
        opacity: 0;
        transform: translateY(20px);
        animation: fadeUp 0.5s ease forwards;
    }

    .feature-card:nth-child(1) { animation-delay: 0.1s; }
    .feature-card:nth-child(2) { animation-delay: 0.2s; }
    .feature-card:nth-child(3) { animation-delay: 0.3s; }
    .feature-card:nth-child(4) { animation-delay: 0.4s; }
    .feature-card:nth-child(5) { animation-delay: 0.5s; }
    .feature-card:nth-child(6) { animation-delay: 0.6s; }

    .pipe-step:nth-child(1) { animation-delay: 0.1s; }
    .pipe-step:nth-child(3) { animation-delay: 0.2s; }
    .pipe-step:nth-child(5) { animation-delay: 0.3s; }
    .pipe-step:nth-child(7) { animation-delay: 0.4s; }
    .pipe-step:nth-child(9) { animation-delay: 0.5s; }

    @keyframes fadeUp {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}