/* ========================================================================
   CIPHER Marketing Site — Styles
   ======================================================================== */

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Brand palette */
  --c-bg:        #0a0e17;
  --c-surface:   #111827;
  --c-surface-2: #1a2236;
  --c-border:    #1e293b;
  --c-accent:    #3b82f6;
  --c-accent-2:  #60a5fa;
  --c-green:     #22c55e;
  --c-green-dim: #16a34a;
  --c-amber:     #f59e0b;
  --c-text:      #f1f5f9;
  --c-text-dim:  #94a3b8;
  --c-text-muted:#64748b;

  /* Layout */
  --max-w: 1200px;
  --radius: 12px;
  --radius-sm: 8px;

  /* Type scale */
  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-lg:   1.125rem;
  --fs-xl:   1.25rem;
  --fs-2xl:  1.5rem;
  --fs-3xl:  2rem;
  --fs-4xl:  2.75rem;
  --fs-5xl:  3.5rem;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--c-accent-2);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: #93bbfd; }

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

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
}
.badge--green {
  background: rgba(34, 197, 94, 0.12);
  color: var(--c-green);
  border: 1px solid rgba(34, 197, 94, 0.25);
}
.badge--amber {
  background: rgba(245, 158, 11, 0.12);
  color: var(--c-amber);
  border: 1px solid rgba(245, 158, 11, 0.25);
}
.badge--blue {
  background: rgba(59, 130, 246, 0.12);
  color: var(--c-accent-2);
  border: 1px solid rgba(59, 130, 246, 0.25);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-base);
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}
.btn--primary {
  background: var(--c-accent);
  color: #fff;
}
.btn--primary:hover {
  background: #2563eb;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35);
}
.btn--outline {
  background: transparent;
  color: var(--c-text);
  border: 1px solid var(--c-border);
}
.btn--outline:hover {
  background: var(--c-surface);
  color: var(--c-text);
  border-color: var(--c-text-muted);
}
.btn--ghost {
  background: transparent;
  color: var(--c-text-dim);
  padding: 0.5rem 1rem;
}
.btn--ghost:hover { color: var(--c-text); }

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: background 0.3s, box-shadow 0.3s;
}
.navbar.scrolled {
  background: rgba(10, 14, 23, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--c-border);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--c-text);
  letter-spacing: 0.04em;
}
.navbar__brand:hover { color: var(--c-text); }
.navbar__brand svg { color: var(--c-accent); }

.navbar__links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.navbar__links a {
  color: var(--c-text-dim);
  font-size: var(--fs-sm);
  font-weight: 500;
  transition: color 0.2s;
}
.navbar__links a:hover { color: var(--c-text); }

.navbar__cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.navbar__mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--c-text);
  cursor: pointer;
  padding: 0.5rem;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 10rem 0 6rem;
  text-align: center;
  overflow: hidden;
}

/* Gradient orb background */
.hero::before {
  content: "";
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, rgba(59,130,246,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero__announce {
  margin-bottom: 2rem;
}

.hero__title {
  font-size: var(--fs-5xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}
.hero__title span {
  background: linear-gradient(135deg, var(--c-accent-2), var(--c-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--fs-xl);
  color: var(--c-text-dim);
  max-width: 680px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero__note {
  margin-top: 3rem;
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
}

/* ---------- Logos / Social Proof ---------- */
.social-proof {
  padding: 4rem 0;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  text-align: center;
}
.social-proof__label {
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-muted);
  margin-bottom: 2rem;
}
.social-proof__frameworks {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
}
.social-proof__item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--c-text-dim);
  white-space: nowrap;
}
.social-proof__item svg {
  flex-shrink: 0;
  color: var(--c-accent);
}

/* ---------- Section Common ---------- */
.section {
  padding: 6rem 0;
}
.section--alt {
  background: var(--c-surface);
}
.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 4rem;
}
.section__overline {
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-accent);
  margin-bottom: 0.75rem;
}
.section__title {
  font-size: var(--fs-3xl);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
}
.section__desc {
  color: var(--c-text-dim);
  font-size: var(--fs-lg);
}

/* ---------- Features Grid ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.feature-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color 0.2s, transform 0.2s;
}
.section--alt .feature-card {
  background: var(--c-surface-2);
}
.feature-card:hover {
  border-color: var(--c-accent);
  transform: translateY(-2px);
}
.feature-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--c-accent);
}
.feature-card__title {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.feature-card__desc {
  font-size: var(--fs-sm);
  color: var(--c-text-dim);
  line-height: 1.7;
}

/* ---------- Open Source Section ---------- */
.open-source {
  padding: 6rem 0;
  position: relative;
}
.open-source__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.open-source__content {
  max-width: 520px;
}
.open-source__graphic {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 2rem;
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: var(--fs-sm);
  color: var(--c-text-dim);
  line-height: 1.8;
  position: relative;
  overflow: hidden;
}
.open-source__graphic::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-accent), var(--c-green));
}
.open-source__graphic .line-num {
  color: var(--c-text-muted);
  user-select: none;
  margin-right: 1rem;
}
.open-source__graphic .keyword { color: #c084fc; }
.open-source__graphic .string { color: #86efac; }
.open-source__graphic .comment { color: var(--c-text-muted); }
.open-source__graphic .func { color: var(--c-accent-2); }

/* ---------- How It Works ---------- */
.how-it-works__steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  counter-reset: step;
}
.step-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  text-align: center;
  position: relative;
  counter-increment: step;
}
.step-card::before {
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--c-accent);
  color: #fff;
  font-weight: 800;
  font-size: var(--fs-lg);
  margin: 0 auto 1.5rem;
}
.step-card__title {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.step-card__desc {
  font-size: var(--fs-sm);
  color: var(--c-text-dim);
  line-height: 1.7;
}

/* ---------- Release Banner ---------- */
.release-banner {
  background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(34,197,94,0.08));
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 3.5rem;
  text-align: center;
  margin: 4rem 0;
}
.release-banner__title {
  font-size: var(--fs-3xl);
  font-weight: 800;
  margin-bottom: 1rem;
}
.release-banner__desc {
  font-size: var(--fs-lg);
  color: var(--c-text-dim);
  max-width: 600px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

/* ---------- CTA Section ---------- */
.cta {
  padding: 8rem 0;
  text-align: center;
  position: relative;
}
.cta::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(circle, rgba(59,130,246,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.cta__title {
  font-size: var(--fs-4xl);
  font-weight: 800;
  margin-bottom: 1rem;
}
.cta__desc {
  font-size: var(--fs-lg);
  color: var(--c-text-dim);
  max-width: 560px;
  margin: 0 auto 2.5rem;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--c-border);
  padding: 3rem 0;
}
.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer__copy {
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
}
.footer__links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}
.footer__links a {
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
}
.footer__links a:hover { color: var(--c-text); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .open-source__inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .hero__title { font-size: var(--fs-3xl); }
  .hero { padding: 8rem 0 4rem; }
  .section { padding: 4rem 0; }

  .features-grid,
  .how-it-works__steps {
    grid-template-columns: 1fr;
  }

  .navbar__links { display: none; }
  .navbar__cta .btn--outline { display: none; }
  .navbar__mobile-toggle { display: block; }

  .release-banner { padding: 2.5rem 1.5rem; }
  .release-banner__title { font-size: var(--fs-2xl); }

  .cta__title { font-size: var(--fs-3xl); }

  .footer .container { justify-content: center; text-align: center; }
}

@media (max-width: 480px) {
  .hero__title { font-size: var(--fs-2xl); }
  .hero__subtitle { font-size: var(--fs-base); }
  .section__title { font-size: var(--fs-2xl); }
  .social-proof__frameworks { gap: 1.5rem; }
}