/* Shiver Software — marketing site (static) */
:root {
  --cyan-400: #22d3ee;
  --cyan-500: #06b6d4;
  --cyan-600: #0891b2;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --white: #ffffff;
  --radius: 0.625rem;
  --font-display: "Orbitron", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--slate-300);
  background: var(--slate-900);
  min-height: 100vh;
}

a {
  color: var(--cyan-400);
  text-decoration: none;
}

a:hover {
  color: var(--cyan-500);
}

.font-display {
  font-family: var(--font-display);
}

.container {
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ----- Header ----- */
.site-header {
  background: var(--slate-900);
  border-bottom: 1px solid var(--slate-800);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4rem;
  padding: 0.5rem 0;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
}

.site-logo:hover {
  color: inherit;
}

.site-logo img {
  height: 3rem;
  width: auto;
  display: block;
}

.site-logo__text {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  line-height: 1.2;
}

.site-logo__text span:first-child {
  color: var(--cyan-400);
}

.site-logo__text span:last-child {
  color: var(--white);
}

.nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav a {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--slate-300);
}

.nav a:hover {
  color: var(--cyan-400);
}

.nav a[aria-current="page"] {
  color: var(--cyan-400);
}

/* ----- Hero ----- */
.hero {
  background: linear-gradient(180deg, var(--slate-800) 0%, var(--slate-900) 100%);
  padding: 4rem 0 5rem;
  text-align: center;
}

.hero__mark {
  margin: 0 auto 1.5rem;
  display: flex;
  justify-content: center;
}

.hero__mark img {
  height: 8rem;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  letter-spacing: 0.04em;
}

.hero__title .accent {
  color: var(--cyan-400);
}

.hero__title .plain {
  color: var(--white);
}

.hero__tagline {
  max-width: 40rem;
  margin: 0 auto;
  font-size: 1.05rem;
  color: var(--slate-300);
}

/* ----- Sections ----- */
.section {
  padding: 4rem 0;
}

.section--tight-top {
  padding-top: 2rem;
}

.section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--cyan-400);
  margin: 0 0 1.25rem;
  letter-spacing: 0.04em;
}

.section__title--center {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section__body p {
  margin: 0 0 1rem;
  max-width: 48rem;
}

.section__body ul {
  margin: 1rem 0 0;
  padding-left: 1.25rem;
  max-width: 48rem;
}

.section__body li {
  margin-bottom: 0.5rem;
}

.section__lede {
  max-width: 42rem;
  margin: 0 0 2rem;
  color: var(--slate-300);
}

/* Services grid */
.services-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--slate-900);
  border: 1px solid var(--slate-700);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--cyan-400);
  margin: 0 0 0.75rem;
}

.card p {
  margin: 0;
  font-size: 0.95rem;
}

.card ul {
  margin: 0.75rem 0 0;
  padding-left: 1.25rem;
}

.card li {
  margin-bottom: 0.4rem;
}

/* CTA */
.cta {
  text-align: center;
  padding: 4rem 0;
}

.cta .section__title {
  margin-bottom: 0.75rem;
}

.cta p {
  margin: 0 0 1.5rem;
  color: var(--slate-300);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease;
}

.btn--cyan {
  background: var(--cyan-500);
  color: var(--white);
}

.btn--cyan:hover {
  background: var(--cyan-600);
  color: var(--white);
}

.btn--cyan:active {
  transform: scale(0.98);
}

.text-link {
  display: inline-flex;
  align-items: center;
  font-weight: 600;
}

.app-grid {
  display: grid;
  gap: 1.5rem;
}

.app-card {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.06), rgba(15, 23, 42, 0.96));
  border: 1px solid rgba(34, 211, 238, 0.18);
  border-radius: 1rem;
  padding: 1.5rem;
}

.app-card__media {
  display: block;
}

.app-card__media img,
.app-icon {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 22%;
  box-shadow: 0 1.25rem 3rem rgba(0, 0, 0, 0.35);
}

.app-card__media img {
  max-width: 8rem;
}

.app-card__body {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.app-card__eyebrow,
.app-hero__eyebrow {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.app-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.65rem;
  line-height: 1.1;
}

.app-card__title a {
  color: var(--white);
}

.app-card__copy {
  margin: 0;
  max-width: 42rem;
}

.app-card__actions,
.app-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
}

.app-hero {
  padding: 3rem 0 4rem;
  background:
    radial-gradient(circle at top right, rgba(34, 211, 238, 0.18), transparent 28rem),
    linear-gradient(180deg, var(--slate-800) 0%, var(--slate-900) 100%);
}

.app-hero__grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.app-hero__copy {
  max-width: 42rem;
}

.app-hero__lede {
  font-size: 1.1rem;
  color: var(--white);
  margin: 0 0 1rem;
}

.app-hero__copy p {
  margin: 0 0 1rem;
}

.app-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.app-hero__art {
  display: flex;
  justify-content: center;
}

.app-icon--hero {
  max-width: 15rem;
}

.feature-grid,
.support-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

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

.screenshot-card {
  margin: 0;
  padding: 0.6rem;
  border-radius: 1rem;
  background: rgba(15, 23, 42, 0.88);
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.screenshot-card img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.9rem;
}

.prose {
  max-width: 56rem;
}

.prose h2 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--white);
  margin: 2rem 0 0.75rem;
}

.prose p,
.prose ul {
  max-width: 48rem;
}

.prose ul {
  padding-left: 1.25rem;
}

.policy-note {
  margin-top: 2rem;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--cyan-500);
  background: rgba(34, 211, 238, 0.08);
  color: var(--slate-300);
}

@media (min-width: 768px) {
  .app-card {
    grid-template-columns: 9rem 1fr;
    align-items: center;
  }

  .feature-grid,
  .support-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (min-width: 900px) {
  .app-hero__grid {
    grid-template-columns: 1.3fr 0.7fr;
  }
}

/* ----- Footer ----- */
.site-footer {
  background: var(--slate-900);
  border-top: 1px solid var(--slate-800);
  padding: 1.5rem 0;
  text-align: center;
}

.site-footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--slate-400);
}