/* СФЕРА — product landing */
:root {
  --bg: #07090d;
  --bg-elev: #0e1218;
  --bg-card: rgba(18, 24, 34, 0.72);
  --ink: #e8edf5;
  --muted: #8b96a8;
  --line: rgba(232, 237, 245, 0.1);
  --accent: #d4a24a;
  --accent-2: #3db8a0;
  --accent-soft: rgba(212, 162, 74, 0.14);
  --danger: #e07a6a;
  --radius: 18px;
  --font: "Manrope", system-ui, sans-serif;
  --display: "Unbounded", "Manrope", sans-serif;
  --header-h: 72px;
  --max: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.55;
  color: var(--ink);
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(61, 184, 160, 0.12), transparent 55%),
    radial-gradient(90% 60% at 100% 20%, rgba(212, 162, 74, 0.08), transparent 50%),
    var(--bg);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

#sphere-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
}

.noise {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.aurora {
  position: fixed;
  inset: -20% -10%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(40% 30% at 20% 30%, rgba(61, 184, 160, 0.16), transparent),
    radial-gradient(35% 28% at 80% 60%, rgba(212, 162, 74, 0.12), transparent);
  animation: aurora-drift 18s var(--ease) infinite alternate;
}

@keyframes aurora-drift {
  from { transform: translate3d(-2%, -1%, 0) scale(1); }
  to { transform: translate3d(3%, 2%, 0) scale(1.05); }
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 clamp(16px, 4vw, 40px);
  background: rgba(7, 9, 13, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  transition: background 0.35s var(--ease), backdrop-filter 0.35s, border-color 0.35s;
}

main,
.footer {
  position: relative;
  z-index: 2;
}

.header.scrolled {
  background: rgba(7, 9, 13, 0.92);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.logo-text {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  margin-left: auto;
}

.nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.header-cta {
  margin-left: 8px;
}

.burger {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 12px;
}

.burger span {
  display: block;
  height: 2px;
  margin: 6px 0;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.2s;
}

.burger.active span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.burger.active span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s, border-color 0.25s, color 0.25s, box-shadow 0.25s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-sm {
  min-height: 40px;
  padding: 0 16px;
  font-size: 0.85rem;
}

.btn-primary {
  background: linear-gradient(135deg, #e0b45c, var(--accent));
  color: #1a1208;
  box-shadow: 0 10px 30px rgba(212, 162, 74, 0.28);
}

.btn-primary:hover {
  box-shadow: 0 14px 36px rgba(212, 162, 74, 0.4);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: rgba(212, 162, 74, 0.45);
  background: var(--accent-soft);
}

.btn.block {
  width: 100%;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100dvh;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: clamp(24px, 5vw, 64px);
  padding:
    calc(var(--header-h) + clamp(24px, 6vh, 64px))
    clamp(16px, 5vw, 64px)
    clamp(48px, 8vh, 80px);
  max-width: 1400px;
  margin: 0 auto;
}

.hero-glow {
  position: absolute;
  width: min(70vw, 640px);
  height: min(70vw, 640px);
  left: 55%;
  top: 45%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(212, 162, 74, 0.18), transparent 65%);
  filter: blur(20px);
  pointer-events: none;
  animation: pulse-glow 6s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.7; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.08); }
}

.brand-hero {
  margin: 0 0 12px;
  font-family: var(--display);
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 0.95;
  background: linear-gradient(120deg, #fff 20%, var(--accent) 55%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero h1 {
  margin: 0 0 18px;
  font-family: var(--display);
  font-size: clamp(1.35rem, 3.2vw, 2.15rem);
  font-weight: 600;
  line-height: 1.25;
  max-width: 18ch;
}

.hero-sub {
  margin: 0 0 28px;
  color: var(--muted);
  max-width: 42ch;
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-visual {
  display: grid;
  place-items: center;
  min-height: min(42vh, 420px);
}

.orbit {
  position: relative;
  width: min(72vw, 380px);
  aspect-ratio: 1;
}

.orbit-ring {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(232, 237, 245, 0.12);
  border-radius: 50%;
  animation: spin 28s linear infinite;
}

.orbit-ring.r1 { inset: 8%; animation-duration: 22s; }
.orbit-ring.r2 { inset: 22%; animation-duration: 16s; animation-direction: reverse; border-color: rgba(212, 162, 74, 0.25); }
.orbit-ring.r3 { inset: 36%; animation-duration: 12s; border-color: rgba(61, 184, 160, 0.28); }

.orbit-core {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 22%;
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, #fff6, transparent 40%),
    linear-gradient(145deg, var(--accent), #8a5a1a 50%, var(--accent-2));
  box-shadow: 0 0 40px rgba(212, 162, 74, 0.45);
  animation: core-breathe 4s ease-in-out infinite;
}

.orbit-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: spin 18s linear infinite;
}

.orbit-dot.d1 { left: 50%; top: 0; margin-left: -5px; }
.orbit-dot.d2 { right: 0; top: 50%; margin-top: -5px; background: var(--accent-2); animation-duration: 14s; animation-direction: reverse; }
.orbit-dot.d3 { left: 18%; bottom: 18%; background: #fff; width: 7px; height: 7px; animation-duration: 20s; }
.orbit-dot.d4 { right: 22%; top: 16%; width: 8px; height: 8px; animation-duration: 24s; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes core-breathe {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.06); }
}

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  width: 28px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 16px;
  display: grid;
  place-items: start center;
  padding-top: 8px;
  opacity: 0.7;
}

.scroll-hint span {
  width: 4px;
  height: 8px;
  border-radius: 4px;
  background: var(--accent);
  animation: scroll-dot 1.6s ease-in-out infinite;
}

@keyframes scroll-dot {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(14px); opacity: 0; }
}

/* Sections */
.section {
  padding: clamp(64px, 12vh, 120px) clamp(16px, 5vw, 64px);
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.section h2 {
  margin: 0 0 16px;
  font-family: var(--display);
  font-size: clamp(1.55rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.2;
  max-width: 18ch;
}

.section-lead {
  margin: 0 0 clamp(32px, 5vw, 48px);
  color: var(--muted);
  max-width: 58ch;
}

/* Monitoring */
.monitor-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 2.5vw, 22px);
}

.monitor-block {
  padding: clamp(22px, 3vw, 32px);
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
  transition: border-color 0.3s, transform 0.3s var(--ease);
}

.monitor-block:hover {
  border-color: rgba(212, 162, 74, 0.35);
  transform: translateY(-3px);
}

.monitor-num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--display);
  font-size: 0.85rem;
  color: var(--accent-2);
  letter-spacing: 0.08em;
}

.monitor-block h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
  font-weight: 700;
}

.monitor-block p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Flow */
.flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  counter-reset: flow;
}

.flow-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 20px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  counter-increment: flow;
}

.flow-step::before {
  content: counter(flow, decimal-leading-zero);
  grid-row: 1 / span 2;
  align-self: start;
  font-family: var(--display);
  font-size: 1.1rem;
  color: var(--accent);
  padding-top: 2px;
}

.flow-step strong {
  font-size: 1.05rem;
}

.flow-step span {
  color: var(--muted);
  grid-column: 2;
}

/* Pricing */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 20px);
  align-items: stretch;
}

.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: clamp(22px, 3vw, 28px);
  border-radius: calc(var(--radius) + 4px);
  background: var(--bg-card);
  border: 1px solid var(--line);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  transition: transform 0.35s var(--ease), border-color 0.35s;
}

.price-card:hover {
  transform: translateY(-4px);
}

.price-card.featured {
  border-color: rgba(212, 162, 74, 0.55);
  background:
    linear-gradient(160deg, rgba(212, 162, 74, 0.12), transparent 40%),
    var(--bg-card);
}

.price-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--accent);
  color: #1a1208;
}

.price-tag {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.price-head h3 {
  margin: 0 0 6px;
  font-family: var(--display);
  font-size: 1.25rem;
}

.price-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.price-sum {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
}

.price-value {
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.price-unit {
  color: var(--muted);
  font-size: 0.9rem;
}

.price-list {
  margin: 0;
  padding: 0;
  list-style: none;
  flex: 1;
  display: grid;
  gap: 10px;
}

.price-list li {
  position: relative;
  padding-left: 22px;
  font-size: 0.92rem;
  color: var(--ink);
}

.price-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-2);
}

.price-list li.muted {
  color: var(--muted);
}

.price-list li.muted::before {
  background: var(--muted);
  opacity: 0.5;
}

.price-card .btn {
  margin-top: auto;
}

/* Payments */
.pay-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 20px);
  margin-bottom: 28px;
}

.pay-card {
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent);
  transition: border-color 0.3s;
}

.pay-card:hover {
  border-color: rgba(61, 184, 160, 0.4);
}

.pay-card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.pay-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.pay-note {
  padding: 18px 22px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  border: 1px solid rgba(212, 162, 74, 0.25);
}

.pay-note p {
  margin: 0;
  color: var(--ink);
  font-size: 0.95rem;
}

/* Contact */
.contact {
  padding-bottom: clamp(80px, 14vh, 140px);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.contact-copy h2 {
  max-width: 14ch;
}

.contact-copy > p {
  color: var(--muted);
  margin: 0 0 20px;
}

.contact-points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.contact-points li {
  padding-left: 18px;
  position: relative;
  color: var(--ink);
}

.contact-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: clamp(20px, 3vw, 28px);
  border-radius: calc(var(--radius) + 4px);
  background: var(--bg-card);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.contact-form label {
  display: grid;
  gap: 6px;
}

.contact-form label.full,
.contact-form .btn,
.contact-form .form-status {
  grid-column: 1 / -1;
}

.contact-form span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.28);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.contact-form textarea {
  min-height: 110px;
  resize: vertical;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: rgba(212, 162, 74, 0.55);
  box-shadow: 0 0 0 3px rgba(212, 162, 74, 0.15);
}

.form-status {
  margin: 0;
  min-height: 1.2em;
  font-size: 0.9rem;
  color: var(--muted);
}

.form-status.ok {
  color: var(--accent-2);
}

.form-status.err {
  color: var(--danger);
}

/* Footer */
.footer {
  border-top: 1px solid var(--line);
  padding: 40px clamp(16px, 5vw, 64px) 48px;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.footer p {
  margin: 0;
  color: var(--muted);
  max-width: 48ch;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a {
  color: var(--ink);
  font-weight: 600;
  font-size: 0.9rem;
}

.footer-copy {
  font-size: 0.85rem !important;
  opacity: 0.7;
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: calc(var(--header-h) + 36px);
    padding-bottom: 72px;
  }

  .hero-visual {
    order: -1;
    min-height: min(36vh, 300px);
  }

  .orbit {
    width: min(58vw, 280px);
  }

  .brand-hero {
    font-size: clamp(2.4rem, 14vw, 3.6rem);
  }

  .hero h1 {
    max-width: none;
  }

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

  .price-card.featured {
    order: -1;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    z-index: 99;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 16px 20px;
    background: rgba(7, 9, 13, 0.94);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 14px 8px;
    border-bottom: 1px solid var(--line);
    font-size: 1rem;
  }

  .header-cta {
    display: none;
  }

  .burger {
    display: block;
  }

  .monitor-grid,
  .pay-grid {
    grid-template-columns: 1fr;
  }

  .contact-form {
    grid-template-columns: 1fr;
  }

  .scroll-hint {
    display: none;
  }
}

@media (max-aspect-ratio: 3/4) and (max-width: 900px) {
  .hero {
    padding-bottom: 56px;
  }

  .hero-visual {
    min-height: 28vh;
  }
}

@media (min-aspect-ratio: 21/9) {
  .hero {
    min-height: 100svh;
    padding-block: calc(var(--header-h) + 24px) 40px;
  }

  .orbit {
    width: min(28vw, 340px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}