/* Orbita — design system (research/03-build-brief.md) */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --ink: #0E0F1A;
    --ink-soft: #171929;
    --electric: #4F7CFF;
    --electric-soft: #7d9dff;
    --lime: #F5921E;
    --surface: #F4F5FB;
    --card-dark: rgba(255,255,255,0.04);
    --border-dark: rgba(255,255,255,0.09);
    --text-dark: #EDEFFA;
    --muted-dark: #8b90a8;
    --text-light: #14151f;
    --muted-light: #5d6172;
    --border-light: #dfe2ef;
    --radius: 18px;
    --shadow: 0 24px 60px rgba(14,15,26,0.35);
}

html { scroll-behavior: smooth; }
html.js .reveal { opacity: 0; transform: translateY(26px); }
html.js .reveal.is-visible { opacity: 1; transform: translateY(0); transition: opacity 0.7s ease, transform 0.7s ease; }

body {
    font-family: 'Manrope', system-ui, sans-serif;
    background: var(--ink);
    color: var(--text-dark);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 1.5rem; }
h1, h2, h3 { font-family: 'Unbounded', sans-serif; font-weight: 500; line-height: 1.18; letter-spacing: -0.01em; }
.mono { font-family: 'JetBrains Mono', monospace; }

/* Scroll progress */
#scroll-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0%; background: linear-gradient(90deg, var(--electric), var(--lime)); z-index: 300; transition: width 0.1s linear; }

/* Header */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 200; transition: all 0.4s cubic-bezier(0.16,1,0.3,1); }
.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    max-width: 1180px; margin: 0 auto; padding: 1.1rem 1.5rem;
    transition: all 0.4s cubic-bezier(0.16,1,0.3,1);
}
.site-header.scrolled .header-inner {
    max-width: 900px; margin-top: 10px; padding: 0.6rem 1.4rem;
    background: rgba(23,25,41,0.75); border: 1px solid var(--border-dark);
    backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
    border-radius: 100px;
}
.logo { display: flex; align-items: center; gap: 0.6rem; font-family: 'Unbounded', sans-serif; font-weight: 600; font-size: 1.05rem; letter-spacing: 0.02em; }
.logo img { height: 30px; width: 30px; }
.main-nav { display: flex; gap: 1.8rem; }
.main-nav a { font-size: 0.88rem; font-weight: 600; color: var(--muted-dark); transition: color 0.2s; }
.main-nav a:hover { color: var(--text-dark); }
.header-cta { display: flex; align-items: center; gap: 0.75rem; }
.nav-toggle { display: none; background: none; border: none; color: var(--text-dark); font-size: 1.5rem; cursor: pointer; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    padding: 0.85rem 1.7rem; border-radius: 999px; font-weight: 700; font-size: 0.95rem;
    border: none; cursor: pointer; font-family: 'Manrope', sans-serif;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s;
    white-space: nowrap;
}
.btn-primary { background: var(--electric); color: #fff; box-shadow: 0 10px 34px rgba(79,124,255,0.4); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 44px rgba(79,124,255,0.55); }
.btn-lime { background: var(--lime); color: var(--ink); box-shadow: 0 10px 34px rgba(183,243,77,0.28); }
.btn-lime:hover { transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--text-dark); border: 1.5px solid var(--border-dark); }
.btn-ghost:hover { border-color: var(--electric); color: var(--electric-soft); }
.btn-sm { padding: 0.55rem 1.2rem; font-size: 0.84rem; }
.light-section .btn-ghost { color: var(--text-light); border-color: var(--border-light); }
.light-section .btn-ghost:hover { color: var(--electric); border-color: var(--electric); }

/* Hero */
.hero { position: relative; padding: 10rem 0 5rem; overflow: hidden; }
.hero::before {
    content: ''; position: absolute; top: -25%; right: -12%; width: 700px; height: 700px;
    background: radial-gradient(circle, rgba(79,124,255,0.22), transparent 65%); pointer-events: none;
}
.hero::after {
    content: ''; position: absolute; bottom: -30%; left: -10%; width: 520px; height: 520px;
    background: radial-gradient(circle, rgba(183,243,77,0.10), transparent 65%); pointer-events: none;
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 3rem; align-items: center; }
.eyebrow {
    display: inline-flex; align-items: center; gap: 0.55rem;
    font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--lime); margin-bottom: 1.4rem;
}
.eyebrow::before { content: '//'; opacity: 0.6; }
.hero h1 { font-size: clamp(2rem, 4.6vw, 3.3rem); margin-bottom: 1.4rem; }
.hero h1 em { color: var(--electric-soft); font-style: normal; }
.hero-sub { font-size: 1.08rem; color: var(--muted-dark); max-width: 520px; margin-bottom: 2.2rem; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.stack-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.stack-chip {
    font-family: 'JetBrains Mono', monospace; font-size: 0.72rem;
    padding: 0.35rem 0.8rem; border-radius: 999px;
    background: var(--card-dark); border: 1px solid var(--border-dark); color: var(--muted-dark);
}

/* Hero visual stage */
.hero-visual { position: relative; aspect-ratio: 4/5; border-radius: 26px; overflow: hidden; background: linear-gradient(155deg, #131524, #0b0c16); border: 1px solid var(--border-dark); box-shadow: var(--shadow); }
.hero-visual video, .hero-visual img.stage-asset { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.stage { position: absolute; inset: 0; }
.stage-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px); background-size: 44px 44px; }
.stage-orbit { position: absolute; left: 50%; top: 46%; width: 78%; aspect-ratio: 1; transform: translate(-50%, -50%); border: 1px dashed rgba(125,157,255,0.35); border-radius: 50%; animation: spin 26s linear infinite; }
.stage-orbit::after { content: ''; position: absolute; top: -7px; left: 50%; width: 14px; height: 14px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 18px var(--lime); }
.stage-orbit.inner { width: 52%; animation-duration: 16s; animation-direction: reverse; }
.stage-orbit.inner::after { background: var(--electric); box-shadow: 0 0 18px var(--electric); }
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }
.stage-core {
    position: absolute; left: 50%; top: 46%; transform: translate(-50%, -50%);
    width: 88px; height: 88px; border-radius: 26px;
    background: linear-gradient(135deg, var(--electric), #2c4fd4);
    display: flex; align-items: center; justify-content: center;
    font-family: 'Unbounded', sans-serif; font-size: 1.6rem; color: #fff;
    box-shadow: 0 0 60px rgba(79,124,255,0.55);
}
.stage-label {
    position: absolute; left: 50%; bottom: 5%; transform: translateX(-50%);
    display: inline-flex; align-items: center; gap: 0.5rem; white-space: nowrap;
    font-family: 'JetBrains Mono', monospace; font-size: 0.68rem; color: var(--muted-dark);
    background: rgba(14,15,26,0.6); border: 1px solid var(--border-dark);
    backdrop-filter: blur(8px); padding: 0.45rem 0.95rem; border-radius: 999px;
}
.stage-label .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 10px var(--lime); animation: pulseDot 1.6s ease-in-out infinite; }
@keyframes pulseDot { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

/* Stat band */
.stat-band { border-top: 1px solid var(--border-dark); border-bottom: 1px solid var(--border-dark); background: var(--ink-soft); padding: 2.4rem 0; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; text-align: center; }
.stat-num { font-family: 'Unbounded', sans-serif; font-size: 2rem; color: var(--lime); font-variant-numeric: tabular-nums; }
.stat-num .unit { font-size: 1.1rem; color: var(--electric-soft); }
.stat-label { font-size: 0.8rem; color: var(--muted-dark); margin-top: 0.3rem; }

/* Sections */
section { padding: 5.5rem 0; }
.section-head { max-width: 680px; margin: 0 auto 3rem; text-align: center; }
.section-head h2, .section-head h1 { font-size: clamp(1.6rem, 3vw, 2.3rem); margin-bottom: 0.9rem; }
.section-head p { color: var(--muted-dark); font-size: 1rem; }
.light-section { background: var(--surface); color: var(--text-light); }
.light-section .section-head p { color: var(--muted-light); }

/* Pain vs solution */
.pain-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.pain-card, .win-card { border-radius: var(--radius); padding: 2rem; }
.pain-card { background: var(--card-dark); border: 1px solid var(--border-dark); }
.win-card { background: linear-gradient(150deg, rgba(79,124,255,0.14), rgba(183,243,77,0.07)); border: 1px solid rgba(79,124,255,0.35); }
.pain-card h3, .win-card h3 { font-size: 1.05rem; margin-bottom: 1rem; }
.pain-card li, .win-card li { font-size: 0.92rem; padding: 0.45rem 0 0.45rem 1.6rem; position: relative; color: var(--muted-dark); }
.win-card li { color: var(--text-dark); }
.pain-card li::before { content: '—'; position: absolute; left: 0; color: #e2695f; }
.win-card li::before { content: '✓'; position: absolute; left: 0; color: var(--lime); font-weight: 700; }

/* Services */
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.service-card {
    background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius);
    padding: 2.2rem; color: var(--text-light); position: relative; overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease; display: block;
}
.service-card:hover { transform: translateY(-5px); box-shadow: 0 22px 50px rgba(14,15,26,0.12); }
.service-num { font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; color: var(--electric); margin-bottom: 0.9rem; display: block; }
.service-card h3 { font-size: 1.2rem; margin-bottom: 0.6rem; }
.service-card p { font-size: 0.92rem; color: var(--muted-light); margin-bottom: 1.1rem; }
.service-meta { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--border-light); padding-top: 1.1rem; font-size: 0.85rem; }
.service-price { font-weight: 800; color: var(--text-light); }
.service-term { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; color: var(--muted-light); }
.service-arrow { color: var(--electric); font-weight: 700; }

/* Cases */
.case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.case-card { background: var(--card-dark); border: 1px solid var(--border-dark); border-radius: var(--radius); overflow: hidden; transition: transform 0.25s, border-color 0.25s; }
.case-card:hover { transform: translateY(-5px); border-color: rgba(79,124,255,0.5); }
.case-cover { aspect-ratio: 16/9; position: relative; background: linear-gradient(150deg, #1b1e33, #10121f); display:flex; align-items:center; justify-content:center; overflow: hidden; }
.case-cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.case-cover .ph { font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; color: var(--muted-dark); text-align: center; padding: 1rem; }
.case-body { padding: 1.6rem 1.8rem 1.8rem; }
.case-tag { font-family: 'JetBrains Mono', monospace; font-size: 0.68rem; color: var(--lime); text-transform: uppercase; letter-spacing: 0.08em; }
.case-body h3 { font-size: 1.1rem; margin: 0.5rem 0 0.6rem; }
.case-body p { font-size: 0.9rem; color: var(--muted-dark); margin-bottom: 1.1rem; }
.case-metrics { display: flex; gap: 1.4rem; flex-wrap: wrap; }
.case-metric .v { font-family: 'Unbounded', sans-serif; font-size: 1.15rem; color: var(--electric-soft); }
.case-metric .l { font-size: 0.7rem; color: var(--muted-dark); }

/* Process */
.process-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.2rem; counter-reset: step; }
.process-step { background: #fff; border: 1px solid var(--border-light); border-radius: 14px; padding: 1.5rem 1.3rem; color: var(--text-light); }
.process-step .num { font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; color: var(--electric); }
.process-step h3 { font-size: 0.95rem; margin: 0.5rem 0 0.45rem; }
.process-step p { font-size: 0.8rem; color: var(--muted-light); }
.process-step .term { display: inline-block; margin-top: 0.7rem; font-family: 'JetBrains Mono', monospace; font-size: 0.68rem; color: var(--ink); background: var(--surface); border: 1px solid var(--border-light); border-radius: 999px; padding: 0.2rem 0.6rem; }

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.price-card { background: var(--card-dark); border: 1px solid var(--border-dark); border-radius: var(--radius); padding: 2rem; display: flex; flex-direction: column; }
.price-card.featured { border-color: var(--electric); background: linear-gradient(160deg, rgba(79,124,255,0.12), var(--card-dark)); position: relative; }
.price-card.featured::before { content: 'популярное'; position: absolute; top: -12px; right: 1.4rem; font-family: 'JetBrains Mono', monospace; background: var(--lime); color: var(--ink); font-size: 0.65rem; font-weight: 700; padding: 0.28rem 0.75rem; border-radius: 999px; }
.price-card h3 { font-size: 1.02rem; margin-bottom: 0.4rem; }
.price-amount { font-family: 'Unbounded', sans-serif; font-size: 1.5rem; margin: 0.5rem 0 0.2rem; }
.price-amount .from { font-size: 0.75rem; color: var(--muted-dark); font-family: 'Manrope', sans-serif; }
.price-term { font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; color: var(--lime); margin-bottom: 1rem; }
.price-card ul { flex: 1; margin-bottom: 1.4rem; }
.price-card li { font-size: 0.87rem; padding: 0.32rem 0 0.32rem 1.4rem; position: relative; color: var(--muted-dark); }
.price-card li::before { content: '✓'; position: absolute; left: 0; color: var(--electric-soft); font-weight: 700; }

/* Guarantees */
.guarantee-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.guarantee { background: var(--card-dark); border: 1px solid var(--border-dark); border-radius: 14px; padding: 1.5rem; text-align: center; }
.guarantee .ico { font-size: 1.5rem; margin-bottom: 0.6rem; }
.guarantee h3 { font-size: 0.9rem; margin-bottom: 0.35rem; font-family: 'Manrope', sans-serif; font-weight: 800; }
.guarantee p { font-size: 0.8rem; color: var(--muted-dark); }

/* Testimonials */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.testimonial { background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius); padding: 1.8rem; color: var(--text-light); }
.stars { color: #eab308; margin-bottom: 0.7rem; letter-spacing: 2px; }
.testimonial p { font-size: 0.92rem; margin-bottom: 1rem; }
.testimonial-author { display: flex; align-items: center; gap: 0.65rem; font-size: 0.83rem; color: var(--muted-light); }
.avatar { width: 34px; height: 34px; border-radius: 50%; background: linear-gradient(135deg, var(--electric), var(--lime)); flex-shrink: 0; }

/* FAQ */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border-dark); }
.faq-question { width: 100%; text-align: left; background: none; border: none; cursor: pointer; padding: 1.35rem 0; display: flex; justify-content: space-between; align-items: center; font-size: 1rem; font-weight: 700; color: var(--text-dark); font-family: 'Manrope', sans-serif; }
.faq-question .plus { font-size: 1.3rem; color: var(--electric-soft); transition: transform 0.25s ease; margin-left: 1rem; flex-shrink: 0; }
.faq-item.open .faq-question .plus { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; color: var(--muted-dark); font-size: 0.93rem; line-height: 1.7; }
.faq-answer-inner { padding-bottom: 1.35rem; }

/* Contact */
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: start; }
.contact-info h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: 1rem; }
.contact-info p { color: var(--muted-dark); margin-bottom: 1.6rem; max-width: 420px; }
.contact-links { display: flex; flex-direction: column; gap: 0.7rem; }
.contact-links a { display: inline-flex; align-items: center; gap: 0.6rem; font-size: 0.95rem; color: var(--text-dark); font-weight: 600; }
.contact-links a:hover { color: var(--electric-soft); }
.contact-form { background: var(--card-dark); border: 1px solid var(--border-dark); border-radius: var(--radius); padding: 2rem; }
.field { margin-bottom: 1rem; }
.field label { display: block; font-size: 0.78rem; font-weight: 700; margin-bottom: 0.4rem; color: var(--text-dark); }
.field input, .field select, .field textarea {
    width: 100%; padding: 0.8rem 1rem; border-radius: 12px; border: 1px solid var(--border-dark);
    background: rgba(14,15,26,0.6); font-size: 0.95rem; font-family: inherit; color: var(--text-dark);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--electric); box-shadow: 0 0 0 3px rgba(79,124,255,0.2); }
.field textarea { resize: vertical; min-height: 90px; }
.hp { position: absolute; left: -9999px; opacity: 0; }
.form-note { font-size: 0.75rem; color: var(--muted-dark); margin-top: 0.8rem; }
.form-success { display: none; padding: 1rem; border-radius: 12px; background: rgba(183,243,77,0.12); border: 1px solid rgba(183,243,77,0.4); color: var(--lime); font-size: 0.9rem; margin-top: 1rem; }
.form-success.show { display: block; }

/* Footer */
.site-footer { border-top: 1px solid var(--border-dark); padding: 3.5rem 0 2.2rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 2rem; margin-bottom: 2.6rem; }
.footer-col h4 { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted-dark); margin-bottom: 1rem; font-family: 'JetBrains Mono', monospace; }
.footer-col a, .footer-col p { font-size: 0.88rem; color: var(--muted-dark); display: block; margin-bottom: 0.55rem; }
.footer-col a:hover { color: var(--text-dark); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--border-dark); padding-top: 1.5rem; font-size: 0.78rem; color: var(--muted-dark); flex-wrap: wrap; gap: 1rem; }

/* Motion prefs */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    html.js .reveal { opacity: 1; transform: none; transition: none; }
    .stage-orbit, .stage-label .dot { animation: none; }
}

/* Responsive */
@media (max-width: 980px) {
    .hero-grid, .contact-wrap { grid-template-columns: 1fr; }
    .hero-visual { max-width: 430px; margin: 0 auto; }
    .stat-grid, .guarantee-row { grid-template-columns: repeat(2, 1fr); }
    .process-list { grid-template-columns: repeat(2, 1fr); }
    .service-grid, .case-grid, .pricing-grid, .testimonial-grid { grid-template-columns: 1fr 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .main-nav { display: none; }
    .nav-toggle { display: block; }
    .hero { padding-top: 7.5rem; }
    .service-grid, .case-grid, .testimonial-grid, .process-list, .pain-grid { grid-template-columns: 1fr; }
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; }
    .header-cta .btn-ghost { display: none; }
}