/* ======================================================================
 * Optikul.com — Visual Evolution Landing (v3.0)
 * ==================================================================== */

:root {
  --ok-bg-deep: #020617;
  --ok-bg-soft: #071426;
  --ok-accent: #22d3ee;
  --ok-accent-2: #a855f7;
  --ok-text-main: #e5f0ff;
  --ok-text-soft: #9ca3af;
  --ok-border-soft: rgba(148, 163, 184, 0.4);
  --ok-radius-lg: 20px;
}

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

body.optilkul-com {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 50% 0%, rgba(34, 211, 238, 0.16), transparent 60%),
    radial-gradient(circle at 50% 100%, rgba(88, 28, 135, 0.22), transparent 70%),
    var(--ok-bg-deep);
  color: var(--ok-text-main);
}

/* HEADER */

.ok-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(20px);
  background: linear-gradient(
    to bottom,
    rgba(15, 23, 42, 0.9),
    rgba(15, 23, 42, 0.7),
    transparent
  );
}

.ok-header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ok-logo-block {
  display: flex;
  align-items: center;
  gap: 9px;
}

.ok-logo {
  width: 48px;
  height: 48px;
  border-radius: 999px;
  object-fit: contain;
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.5);
}

.ok-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.ok-logo-main {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.ok-logo-sub {
  font-size: 11px;
  color: var(--ok-text-soft);
}

.ok-nav {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
}

.ok-nav a {
  color: var(--ok-text-soft);
  text-decoration: none;
}

.ok-nav a:hover {
  color: var(--ok-text-main);
}

.ok-nav-cta {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
}

/* MAIN */

.ok-main {
  padding: 12px 16px 40px;
}

/* HERO */

.ok-hero {
  margin-top: 16px;
}

.ok-hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 26px 20px 32px;
  border-radius: 28px;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 24px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background:
    radial-gradient(circle at top left, rgba(34, 211, 238, 0.22), transparent 60%),
    radial-gradient(circle at bottom right, rgba(168, 85, 247, 0.25), transparent 60%),
    rgba(15, 23, 42, 0.96);
  box-shadow: 0 24px 100px rgba(15, 23, 42, 0.98);
}

.ok-hero-text {
  text-align: left;
}

.ok-kicker {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ok-text-soft);
  margin: 0 0 8px;
}

.ok-hero-title {
  margin: 0 0 8px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.08;
}

.ok-hero-subtitle {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ok-text-soft);
}

.ok-hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ok-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: 150ms ease-out;
}

.ok-btn-primary {
  background: linear-gradient(90deg, #22d3ee, #0ea5e9);
  color: #0b1220;
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.8);
}

.ok-btn-primary:hover {
  box-shadow: 0 0 26px rgba(34, 211, 238, 1);
  transform: translateY(-1px);
}

.ok-btn-ghost {
  background: transparent;
  border-color: rgba(148, 163, 184, 0.7);
  color: var(--ok-text-soft);
}

.ok-btn-ghost:hover {
  border-color: var(--ok-accent);
  color: var(--ok-text-main);
}

.ok-hero-note {
  margin-top: 10px;
  font-size: 12px;
  color: var(--ok-text-soft);
}

.ok-hero-note-strong {
  color: var(--ok-accent);
}

/* HERO VISUAL */

.ok-hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.ok-hero-eye-shell {
  position: relative;
  border-radius: 999px;
  padding: 12px;
  background:
    radial-gradient(circle at top, rgba(34, 211, 238, 0.25), transparent 65%),
    radial-gradient(circle at bottom, rgba(168, 85, 247, 0.25), transparent 70%);
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.96);
  overflow: hidden;
}

/* Electric field behind eye */
.ok-hero-electric-field {
  position: absolute;
  inset: 10%;
  border-radius: 999px;
  background:
    radial-gradient(circle at 20% 30%, rgba(34, 211, 238, 0.3), transparent 60%),
    radial-gradient(circle at 80% 70%, rgba(168, 85, 247, 0.35), transparent 65%),
    radial-gradient(circle at 50% 50%, rgba(56, 189, 248, 0.25), transparent 55%);
  opacity: 0.7;
  mix-blend-mode: screen;
}

.ok-hero-eye {
  position: relative;
  display: block;
  width: 260px;
  max-width: 40vw;
  height: auto;
  object-fit: contain;
}

/* LIVE METRICS */

.ok-metrics-row {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.ok-metric-card {
  border-radius: 16px;
  padding: 8px 10px 10px;
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(55, 65, 81, 0.9);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.9);
}

.ok-metric-label {
  font-size: 11px;
  color: var(--ok-text-soft);
  margin-bottom: 4px;
}

.ok-metric-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--ok-accent);
}

.ok-metric-sub {
  margin-top: 2px;
  font-size: 11px;
  color: var(--ok-text-soft);
}

/* SECTIONS */

.ok-section {
  margin-top: 40px;
}

.ok-section-alt {
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.9), rgba(2, 6, 23, 0.98));
  border-radius: 28px;
  border: 1px solid rgba(31, 41, 55, 0.9);
}

.ok-section-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px 20px 30px;
}

.ok-section-title {
  margin: 0 0 8px;
  font-size: 22px;
}

.ok-section-lead {
  margin: 0 0 18px;
  font-size: 14px;
  color: var(--ok-text-soft);
}

/* GRID */

.ok-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.ok-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

/* CARDS */

.ok-card {
  border-radius: var(--ok-radius-lg);
  padding: 14px 14px 16px;
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid var(--ok-border-soft);
  box-shadow: 0 12px 36px rgba(15, 23, 42, 0.9);
}

.ok-card.soft {
  background: rgba(15, 23, 42, 0.9);
}

.ok-card-title {
  margin: 0 0 6px;
  font-size: 15px;
}

.ok-card-text {
  margin: 0;
  font-size: 13px;
  color: var(--ok-text-soft);
}

/* EARLY ACCESS */

.ok-early-access {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.ok-early-form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-end;
}

.ok-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--ok-text-soft);
  flex: 1;
}

.ok-field input[type="email"] {
  padding: 8px 11px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(15, 23, 42, 0.98);
  color: var(--ok-text-main);
  font-size: 13px;
  outline: none;
}

.ok-field input[type="email"]:focus {
  border-color: var(--ok-accent);
  box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.5);
}

.ok-early-button {
  white-space: nowrap;
}

.ok-privacy-note {
  margin: 4px 0 0;
  font-size: 11px;
  color: var(--ok-text-soft);
}

/* FOOTER */

.ok-footer {
  border-top: 1px solid rgba(15, 23, 42, 1);
  margin-top: 32px;
}

.ok-footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--ok-text-soft);
}

.ok-footer-right a {
  margin-left: 10px;
  color: var(--ok-text-soft);
  text-decoration: none;
}

.ok-footer-right a:hover {
  color: var(--ok-text-main);
}

.ok-footer-brand {
  font-weight: 500;
  color: var(--ok-text-main);
}

/* RESPONSIVE */

@media (max-width: 900px) {
  .ok-hero-inner {
    grid-template-columns: minmax(0, 1fr);
    text-align: center;
  }

  .ok-hero-text {
    text-align: center;
  }

  .ok-hero-cta-row {
    justify-content: center;
  }

  .ok-hero-visual {
    margin-top: 10px;
  }

  .ok-metrics-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .ok-grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }

  .ok-grid-2 {
    grid-template-columns: minmax(0, 1fr);
  }

  .ok-header-inner {
    flex-direction: column;
    gap: 8px;
  }

  .ok-nav {
    flex-wrap: wrap;
    justify-content: center;
  }
}