:root {
    --primary: #0F172A;
    --primary-light: #1E293B;
    --accent: #38BDF8;
    --accent-glow: rgba(56, 189, 248, 0.5);
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --bg-dark: #020617;
    --bg-card: #0F172A;
    --border: #1E293B;
    --font-sans: 'Inter', sans-serif;
    --max-width: 1200px;
}

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

html,
body {
    height: 100%;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 3D Background Animation */
.background-3d {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    perspective: 1000px;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.1) 0%, rgba(56, 189, 248, 0.05) 100%);
    animation: float 20s infinite ease-in-out;
    filter: blur(60px);
}

.shape-1 {
    width: 400px;
    height: 400px;
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    top: 50%;
    right: -50px;
    animation-delay: -5s;
}

.shape-3 {
    width: 350px;
    height: 350px;
    bottom: -100px;
    left: 30%;
    animation-delay: -10s;
}

.shape-4 {
    width: 250px;
    height: 250px;
    top: 30%;
    left: 10%;
    animation-delay: -15s;
}

.shape-5 {
    width: 200px;
    height: 200px;
    bottom: 20%;
    right: 20%;
    animation-delay: -7s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotateX(0deg) rotateY(0deg) scale(1);
    }
    25% {
        transform: translate(50px, -50px) rotateX(10deg) rotateY(10deg) scale(1.1);
    }
    50% {
        transform: translate(0, -100px) rotateX(0deg) rotateY(20deg) scale(1);
    }
    75% {
        transform: translate(-50px, -50px) rotateX(-10deg) rotateY(-10deg) scale(0.9);
    }
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s;
}

ul {
    list-style: none;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

h1,
h2,
h3 {
    line-height: 1.2;
    font-weight: 700;
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

p {
    color: var(--text-muted);
    font-size: 1.125rem;
}

.gradient-text {
    background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.dot {
    color: var(--accent);
}

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--bg-dark);
    border: 1px solid var(--accent);
}

.btn-primary:hover {
    background-color: #0EA5E9;
    box-shadow: 0 0 15px var(--accent-glow);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    border-color: var(--accent);
    background-color: rgba(56, 189, 248, 0.1);
    transform: translateY(-2px);
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1rem 0;
    background-color: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a:not([class^="btn"]) {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
}

.nav-links a:not([class^="btn"]):hover {
    color: var(--text-main);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-main);
    transition: all 0.3s ease;
}

.hero {
    padding: 10rem 0 5rem;
    position: relative;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent);
    border-radius: 99px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.hero-sub {
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.trust-badges {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.trust-badges span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* 3D Code Window with Perspective */
.code-window {
    background: #1E1E1E;
    border-radius: 12px;
    box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.5);
    border: 1px solid #333;
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: transform 0.3s ease;
    max-width: 100%;
    width: 100%;
    animation: floatCode 6s ease-in-out infinite;
}

@keyframes floatCode {
    0%, 100% {
        transform: perspective(1000px) rotateY(-5deg) rotateX(2deg) translateY(0);
    }
    50% {
        transform: perspective(1000px) rotateY(-3deg) rotateX(1deg) translateY(-10px);
    }
}

.code-window:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
    animation: none;
}

.window-header {
    background: #252526;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #333;
}

.dots {
    display: flex;
    gap: 6px;
    margin-right: 1rem;
}

.dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.red {
    background: #FF5F56;
}

.yellow {
    background: #FFBD2E;
}

.green {
    background: #27C93F;
}

.window-header .title {
    font-family: monospace;
    font-size: 0.8rem;
    color: #888;
}

.window-body {
    padding: 1.5rem;
    overflow-x: auto;
}

pre {
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    color: #d4d4d4;
    white-space: pre;
    overflow-x: auto;
    max-width: 100%;
}

.features {
    padding: 6rem 0;
    background-color: #0B1120;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 10px 30px rgba(56, 189, 248, 0.1);
}

.icon-box {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-main);
}

.developers {
    padding: 6rem 0;
}

.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.badge-sm {
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    display: block;
}

.feature-list {
    margin: 2rem 0;
}

.feature-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-main);
}

.btn-text {
    color: var(--accent);
    font-weight: 600;
}

.api-version {
    background: rgba(255, 255, 255, 0.03);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: border-color 0.2s;
}

.api-version:hover {
    border-color: var(--accent);
}

.api-version h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--accent);
}

.api-version p {
    font-size: 0.95rem;
    margin-bottom: 0;
}

.api-version code {
    background: rgba(0, 0, 0, 0.3);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
    font-size: 0.85em;
    color: #e2e8f0;
}

.process-flow-vertical {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    position: relative;
    max-width: 100%;
    transform: perspective(1000px) rotateY(5deg);
    transition: transform 0.3s ease;
}

.process-flow-vertical:hover {
    transform: perspective(1000px) rotateY(0);
}

.process-step {
    display: flex;
    gap: 1.5rem;
    position: relative;
}

.process-step:not(:last-child)::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 50px;
    bottom: -30px;
    width: 2px;
    background: var(--border);
    z-index: 0;
}

.step-indicator {
    width: 50px;
    height: 50px;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    z-index: 1;
    background-color: var(--bg-card);
}

.step-content {
    flex: 1;
    min-width: 0;
}

.step-content h4 {
    color: var(--text-main);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.step-content p {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

.step-badge {
    display: inline-block;
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    background: rgba(39, 201, 63, 0.1);
    color: #27C93F;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.pricing {
    padding: 6rem 0;
    background-color: #0B1120;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    align-items: flex-start;
}

.price-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    text-align: center;
    position: relative;
    width: 100%;
    transition: transform 0.2s, box-shadow 0.2s;
}

.price-card:hover {
    transform: translateY(-5px);
}

.price-card.popular {
    border-color: var(--accent);
    box-shadow: 0 0 30px rgba(56, 189, 248, 0.1);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: var(--bg-dark);
    padding: 0.25rem 1rem;
    border-radius: 99px;
    font-size: 0.875rem;
    font-weight: 700;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    margin: 1.5rem 0 0.5rem;
}

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

.price-features {
    margin: 2rem 0;
    text-align: left;
}

.price-features li {
    margin-bottom: 1rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.full-width {
    width: 100%;
}

.footer {
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    color: var(--text-main);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.footer-col a {
    display: block;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ── Responsive ───────────────────────────────────────────── */

/* Tablet */
@media (max-width: 1024px) {
    h1 { font-size: 2.75rem; }
    h2 { font-size: 2rem; }

    .hero .container { gap: 2.5rem; }
    .split-layout { gap: 2.5rem; }
    .process-flow-vertical { transform: none; }
    .process-flow-vertical:hover { transform: none; }
    .code-window {
        transform: perspective(1000px) rotateY(-3deg) rotateX(1deg);
    }
}

/* Mobile */
@media (max-width: 768px) {
    html, body { overflow-x: hidden; }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    p  { font-size: 1rem; }

    .container { padding: 0 1.25rem; }

    /* ── Navbar ── */
    .navbar { padding: 0.75rem 0; }

    .nav-links {
        display: none !important;
        position: fixed;
        top: 58px;
        left: 0;
        right: 0;
        width: 100%;
        flex-direction: column;
        background: rgba(2, 6, 23, 0.97);
        backdrop-filter: blur(12px);
        padding: 1.25rem;
        gap: 0.75rem;
        z-index: 999;
        border-bottom: 1px solid var(--border);
        box-sizing: border-box;
    }
    .nav-links.active { display: flex !important; }

    .nav-links a.btn-primary,
    .nav-links a.btn-secondary {
        text-align: center;
        width: 100%;
        padding: 0.65rem 1rem;
    }

    .mobile-menu-btn { display: flex !important; }

    /* ── Hero ── */
    .hero { padding: 5.5rem 0 3rem; }

    .hero .container {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        width: 100%;
    }

    .hero-content { min-width: 0; }
    .hero-sub { max-width: 100%; font-size: 1rem; }

    .hero-cta {
        flex-direction: column;
        gap: 0.75rem;
        align-items: stretch;
    }
    .hero-cta .btn-primary,
    .hero-cta .btn-secondary { text-align: center; width: 100%; }

    .trust-badges {
        gap: 0.6rem;
    }
    .trust-badges span {
        font-size: 0.78rem;
        padding: 0.3rem 0.65rem;
    }

    /* ── Code window ── */
    .hero-visual {
        width: 100%;
        min-width: 0;
    }

    .code-window {
        transform: none !important;
        animation: none !important;
        width: 100%;
        max-width: 100%;
        overflow: hidden;
    }
    .code-window:hover { transform: none !important; }

    .window-body {
        padding: 1rem;
        overflow-x: auto;
    }

    pre {
        font-size: 0.78rem;
        white-space: pre;
        overflow-x: auto;
        max-width: 100%;
    }

    /* ── Features ── */
    .features { padding: 4rem 0; }
    .grid-3 { grid-template-columns: 1fr; gap: 1.25rem; }
    .section-header { margin-bottom: 2.5rem; }

    /* ── Developers ── */
    .developers { padding: 4rem 0; }

    .split-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .process-flow-vertical {
        transform: none !important;
        padding: 1.5rem;
    }
    .process-flow-vertical:hover { transform: none !important; }

    /* ── Pricing ── */
    .pricing { padding: 4rem 0; }
    .pricing-grid { grid-template-columns: 1fr; }

    /* ── Footer ── */
    .footer { padding: 3rem 0 1.5rem; }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* Extra-small phones */
@media (max-width: 480px) {
    h1 { font-size: 1.75rem; }

    .trust-badges {
        flex-direction: column;
        align-items: flex-start;
    }

    .price-card { padding: 1.75rem 1.25rem; }
    .process-flow-vertical { padding: 1.25rem; }
}

/* ── Enhanced Visual Polish ──────────────────────────────── */

/* popular-tag alias */
.popular-tag {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: var(--bg-dark);
    padding: 0.25rem 1rem;
    border-radius: 99px;
    font-size: 0.875rem;
    font-weight: 700;
    white-space: nowrap;
}

/* Navbar scroll effect */
.navbar.scrolled {
    background-color: rgba(2, 6, 23, 0.98);
    box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

/* Card glow on hover */
.card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.card:hover {
    transform: translateY(-6px);
    border-color: rgba(56, 189, 248, 0.35);
    box-shadow: 0 16px 40px rgba(56, 189, 248, 0.10), 0 0 0 1px rgba(56, 189, 248, 0.1);
}

/* Icon box glow */
.icon-box {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    width: 60px;
    height: 60px;
    background: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.15);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    transition: all 0.25s;
}

.card:hover .icon-box {
    background: rgba(56, 189, 248, 0.15);
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.25);
}

/* Hero visual glow */
.hero-visual {
    position: relative;
}
.hero-visual::before {
    content: '';
    position: absolute;
    inset: -40px;
    background: radial-gradient(ellipse at center, rgba(56, 189, 248, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* Section alternating backgrounds */
.features  { background: linear-gradient(180deg, #020617 0%, #0b1120 100%); }
.developers { background: #020617; }
.pricing   { background: linear-gradient(180deg, #0b1120 0%, #020617 100%); }

/* Gradient text for accent words */
.text-accent { color: var(--accent); }

/* Price card hover effect */
.price-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    text-align: center;
    position: relative;
    width: 100%;
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.price-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: 0 20px 50px rgba(56, 189, 248, 0.12);
}

/* Trust badges */
.trust-badges span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    padding: 0.35rem 0.85rem;
    font-size: 0.82rem;
    transition: border-color 0.2s, background 0.2s;
}
.trust-badges span:hover {
    background: rgba(56, 189, 248, 0.08);
    border-color: rgba(56, 189, 248, 0.25);
}
.trust-badges span i {
    color: var(--accent);
}

/* Section header line decoration */
.section-header::before {
    content: '';
    display: block;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
    border-radius: 2px;
    margin: 0 auto 1rem;
}

/* Smooth link transitions */
.nav-links a {
    position: relative;
    transition: color 0.2s;
}
.nav-links a:not([class]):hover { color: var(--text-main); }

/* Footer polish */
.footer-col p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-top: 0.75rem;
}

/* Code syntax colors */
pre .string  { color: #a5d6ff; }
pre .key     { color: #ff7b72; }
pre .number  { color: #79c0ff; }
pre .boolean { color: #d2a8ff; }

/* Fade in animation for hero */
.hero-content {
    animation: heroFadeIn 0.8s ease both;
}
.hero-visual {
    animation: heroFadeIn 0.8s 0.2s ease both;
}

@keyframes heroFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Mobile menu hamburger active state */
.mobile-menu-btn.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.mobile-menu-btn.open span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }