/* ZettaHub landing: dark, glass panels, cyan → turquoise → mint. No external fonts or scripts. */
:root {
  --bg: #0b0e11;
  --card: #161b22;
  --cyan: #00a3e0;
  --teal: #00bfa5;
  --mint: #00e676;
  --text: #ffffff;
  --muted: #8b949e;
  --line: rgba(255, 255, 255, 0.08);
  --gradient: linear-gradient(90deg, var(--cyan), var(--teal), var(--mint));
  --radius: 20px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family:
    'Inter',
    'Segoe UI',
    system-ui,
    -apple-system,
    Roboto,
    'Helvetica Neue',
    Arial,
    sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
}

/* Ambient light behind the glass */
.glow {
  position: fixed;
  width: 46vw;
  height: 46vw;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.28;
  pointer-events: none;
  z-index: 0;
}
.glow-a {
  top: -14vw;
  left: -10vw;
  background: var(--cyan);
}
.glow-b {
  bottom: -18vw;
  right: -12vw;
  background: var(--mint);
  opacity: 0.18;
}

.nav,
main,
.footer {
  position: relative;
  z-index: 1;
  max-width: 1160px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 22px;
  padding-bottom: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.brand b {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Glass card, the building block of the whole page */
.card {
  background: linear-gradient(180deg, rgba(22, 27, 34, 0.82), rgba(22, 27, 34, 0.62));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease;
}
.btn:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}
.btn-primary {
  color: #04140f;
  background: var(--gradient);
  box-shadow:
    0 0 0 1px rgba(0, 230, 118, 0.3),
    0 10px 30px rgba(0, 191, 165, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow:
    0 0 0 1px rgba(0, 230, 118, 0.5),
    0 14px 40px rgba(0, 191, 165, 0.5);
}
.btn-ghost {
  border: 1px solid rgba(0, 191, 165, 0.45);
  background: rgba(0, 191, 165, 0.08);
}
.btn-ghost:hover {
  background: rgba(0, 191, 165, 0.16);
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 56px 0 88px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(22, 27, 34, 0.7);
  color: var(--muted);
  font-size: 0.9rem;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 12px var(--mint);
  animation: pulse 2s ease-in-out infinite;
}

h1 {
  margin: 0;
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
}

h2 {
  margin: 0 0 12px;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.lead,
.section-lead {
  color: var(--muted);
  font-size: 1.15rem;
  max-width: 560px;
}
.lead {
  margin: 22px 0 32px;
}
.section-lead {
  margin: 0 0 40px;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.cta.center {
  justify-content: center;
}

.trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 0.92rem;
}
.trust li::before {
  content: '✓ ';
  color: var(--mint);
}

/* The panel preview */
.device {
  border: 1px solid rgba(0, 163, 224, 0.35);
  border-radius: 28px;
  padding: 16px;
  background: rgba(11, 14, 17, 0.6);
  box-shadow:
    0 0 0 1px rgba(0, 230, 118, 0.08),
    0 0 80px rgba(0, 163, 224, 0.25),
    0 30px 80px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transform: perspective(1400px) rotateY(-6deg) rotateX(3deg);
  animation: float 7s ease-in-out infinite;
}
.device-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 6px 14px;
  color: var(--muted);
  font-size: 0.85rem;
}
.dots {
  display: inline-flex;
  gap: 6px;
}
.dots i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #2a3038;
}
.device-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 12px;
}
.device-grid .card {
  padding: 16px;
  border-radius: 16px;
}
.label {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.kpi strong {
  display: block;
  margin-top: 6px;
  font-size: 1.6rem;
  letter-spacing: -0.02em;
}
.delta {
  color: var(--mint);
  font-size: 0.85rem;
}
.spark {
  display: block;
  width: 100%;
  height: 70px;
  margin-top: 8px;
}
.ring-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  text-align: center;
}
.ring {
  --value: 82;
  --deg: calc(var(--value) * 3.6deg);
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background:
    radial-gradient(closest-side, var(--card) 76%, transparent 78%),
    conic-gradient(var(--cyan), var(--teal), var(--mint) var(--deg), #232a33 0);
  font-weight: 700;
  font-size: 1.2rem;
}
.muted {
  color: var(--muted);
  font-size: 0.8rem;
}
.list {
  grid-column: 1 / -1;
}
.list ul {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}
.list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}
.list li:first-child {
  border-top: 0;
}
.list em {
  font-style: normal;
  font-size: 0.8rem;
  white-space: nowrap;
}
.ok {
  color: var(--mint);
}
.wait {
  color: var(--cyan);
}

/* Features */
.features {
  padding: 40px 0 72px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.feature {
  padding: 26px;
  transition:
    transform 0.25s ease,
    border-color 0.25s ease;
}
.feature:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 191, 165, 0.45);
}
.feature h3 {
  margin: 14px 0 8px;
  font-size: 1.15rem;
}
.feature p {
  margin: 0;
  color: var(--muted);
}
.feature small {
  margin-left: 6px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(0, 230, 118, 0.12);
  color: var(--mint);
  font-size: 0.7rem;
  font-weight: 600;
  vertical-align: middle;
}
.icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0, 163, 224, 0.25), rgba(0, 230, 118, 0.18));
  border: 1px solid rgba(0, 191, 165, 0.3);
  font-size: 1.3rem;
}
.soon {
  border-color: rgba(0, 230, 118, 0.3);
}

/* Numbers */
.numbers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  padding-bottom: 72px;
}
.stat {
  padding: 26px;
  text-align: center;
}
.stat strong {
  display: block;
  font-size: 2.4rem;
  letter-spacing: -0.03em;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat span {
  color: var(--muted);
}

/* Contact */
.contact {
  padding: 56px 32px;
  margin-bottom: 64px;
  text-align: center;
  border-color: rgba(0, 191, 165, 0.35);
  box-shadow:
    0 0 80px rgba(0, 191, 165, 0.15),
    0 20px 60px rgba(0, 0, 0, 0.35);
}
.contact .section-lead {
  margin-left: auto;
  margin-right: auto;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-top: 24px;
  padding-bottom: 36px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}
.footer a {
  text-decoration: none;
}

@keyframes pulse {
  50% {
    opacity: 0.4;
  }
}
@keyframes float {
  50% {
    transform: perspective(1400px) rotateY(-6deg) rotateX(3deg) translateY(-10px);
  }
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-top: 32px;
  }
  .device {
    transform: none;
    animation: none;
  }
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .numbers {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .nav,
  main,
  .footer {
    padding-left: 16px;
    padding-right: 16px;
  }
  .grid,
  .device-grid {
    grid-template-columns: 1fr;
  }
  .btn {
    width: 100%;
  }
  .nav .btn {
    width: auto;
  }
  .footer {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}