/* StreamAssist — static marketing pages (LandingPage visual language, minimal). */
@import url('./sa-font-stacks.css');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700&family=Marmelad&display=swap');

:root {
  color-scheme: dark;
  --bg: #0b0317;
  --gradient-mid: rgba(74, 50, 116, 0.69);
  --text: #e6e9ff;
  --muted: rgba(230, 233, 255, 0.78);
  --faint: rgba(230, 233, 255, 0.5);
  --violet: #7c4ddb;
  --violet-glow: rgba(124, 77, 219, 0.45);
  --card-edge: rgba(255, 255, 255, 0.78);
  --glass: rgba(14, 14, 16, 0.52);
  --link: #c4b5fd;
  --link-hover: #f5f3ff;
  --radius: 1.125rem;
  --radius-pill: 999px;
  --font-body: 'Marmelad', Georgia, 'Times New Roman', serif;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  touch-action: manipulation;
  scroll-behavior: smooth;
  /* Match `apps/client/src/style.css` — thin violet thumb on dark track (same as SPA). */
  scrollbar-gutter: stable;
  scrollbar-width: thin;
  scrollbar-color: rgba(139, 92, 246, 0.48) rgba(10, 8, 22, 0.65);
}

body {
  touch-action: manipulation;
}

html::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

html::-webkit-scrollbar-track {
  background: rgba(10, 8, 22, 0.65);
}

html::-webkit-scrollbar-thumb {
  background: rgba(139, 92, 246, 0.52);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

html::-webkit-scrollbar-thumb:hover {
  background: rgba(192, 132, 252, 0.62);
  background-clip: padding-box;
}

::selection {
  background: rgba(124, 77, 219, 0.45);
  color: var(--text);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.sa-bg {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background: linear-gradient(119.1deg, var(--bg) 0%, var(--gradient-mid) 73%);
}

.sa-bg::before,
.sa-bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(88px);
  opacity: 0.42;
}

.sa-bg::before {
  width: min(92vw, 480px);
  height: min(92vw, 480px);
  top: -14%;
  right: -20%;
  background: radial-gradient(circle, var(--violet-glow) 0%, transparent 72%);
}

.sa-bg::after {
  width: min(72vw, 400px);
  height: min(72vw, 400px);
  bottom: -10%;
  left: -14%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.32) 0%, transparent 72%);
}

.sa-shell {
  position: relative;
  z-index: 1;
  max-width: 52rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

@media (min-width: 768px) {
  .sa-shell {
    padding: 2rem 2rem 4.5rem;
  }
}

.sa-skip {
  position: absolute;
  left: -9999px;
  top: 0.75rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: #fff;
  color: #111;
  font-family: var(--font-body);
  font-size: 0.9rem;
  border-radius: 0.5rem;
}

.sa-skip:focus {
  left: 0.75rem;
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

/* Nav */
.sa-top {
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .sa-top {
    margin-bottom: 2.75rem;
  }
}

.sa-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-pill);
  background: var(--glass);
  border: 1px solid rgba(196, 181, 253, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.sa-brand {
  font-family: var(--font-display);
  font-size: 0.88rem;
  letter-spacing: 0.04em;
}

.sa-brand a {
  color: var(--text);
  text-decoration: none;
}

.sa-brand a:hover,
.sa-brand a:focus-visible {
  color: var(--link);
}

.sa-nav__link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.sa-nav__link:hover,
.sa-nav__link:focus-visible {
  color: var(--link-hover);
  border-bottom-color: rgba(196, 181, 253, 0.45);
}

.sa-nav__link[aria-current='page'] {
  color: var(--text);
  font-weight: 600;
  border-bottom-color: rgba(255, 255, 255, 0.35);
}

.sa-nav__cta {
  margin-left: auto;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-pill);
  color: #111827;
  background: #fff;
  text-decoration: none;
  border: 2px solid var(--card-edge);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.18);
  transition:
    transform 0.18s var(--ease),
    box-shadow 0.18s var(--ease);
}

.sa-nav__cta:hover,
.sa-nav__cta:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 8px 26px rgba(124, 77, 219, 0.32);
}

@media (max-width: 640px) {
  .sa-nav__cta {
    margin-left: 0;
    flex: 1 1 auto;
    text-align: center;
  }
}

/* Hero */
.sa-hero {
  text-align: center;
  padding: 1.5rem 0 3rem;
  max-width: 36rem;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .sa-hero {
    padding: 2.25rem 0 3.5rem;
  }
}

.sa-hero__title {
  margin: 0 0 1.125rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.75rem, 5vw, 2.625rem);
  line-height: 1.08;
  letter-spacing: 0.02em;
  text-transform: none;
  text-shadow: 0 0 48px rgba(139, 92, 246, 0.18);
}

.sa-hero__sub {
  margin: 0 0 2rem;
  font-size: 1.125rem;
  line-height: 1.55;
  color: var(--muted);
}

@media (min-width: 768px) {
  .sa-hero__sub {
    font-size: 1.1875rem;
  }
}

/* CTA */
.sa-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 1rem 1.85rem;
  border-radius: var(--radius);
  border: 3px solid var(--card-edge);
  color: var(--text);
  background: linear-gradient(120deg, rgba(124, 77, 219, 0.58) 0%, rgba(40, 21, 56, 0.72) 100%);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.28),
    0 0 0 1px rgba(124, 77, 219, 0.15);
  transition:
    transform 0.2s var(--ease),
    box-shadow 0.2s var(--ease),
    filter 0.2s var(--ease);
}

.sa-btn:hover,
.sa-btn:focus-visible {
  transform: translateY(-3px);
  box-shadow:
    0 12px 36px rgba(124, 77, 219, 0.38),
    0 0 0 1px rgba(255, 255, 255, 0.12);
  filter: brightness(1.06);
}

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

.sa-btn--hero {
  padding: 1.05rem 2rem;
  font-size: 1rem;
}

.sa-btn--final {
  padding: 1.1rem 2.35rem;
  font-size: 1.02rem;
}

/* Sections */
.sa-section {
  margin-bottom: 3.25rem;
}

@media (min-width: 768px) {
  .sa-section {
    margin-bottom: 3.75rem;
  }
}

.sa-section__title {
  margin: 0 0 1.5rem;
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 2.2vw, 1.125rem);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: center;
  color: var(--faint);
}

.sa-features {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .sa-features {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.125rem;
  }
}

.sa-feature {
  margin: 0;
  padding: 1.375rem 1.375rem;
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(124, 77, 219, 0.22) 0%, rgba(60, 36, 99, 0.38) 100%);
  border: 2px solid var(--card-edge);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
  transition:
    transform 0.22s var(--ease),
    box-shadow 0.22s var(--ease),
    border-color 0.22s var(--ease);
}

.sa-feature:hover {
  transform: translateY(-4px);
  box-shadow:
    0 14px 36px rgba(0, 0, 0, 0.28),
    0 0 32px rgba(124, 77, 219, 0.12);
  border-color: rgba(255, 255, 255, 0.92);
}

.sa-feature h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
}

.sa-feature p {
  margin: 0;
  font-size: 0.98rem;
  color: var(--muted);
  line-height: 1.55;
}

/* Steps */
.sa-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.875rem;
  counter-reset: sa-step;
}

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

.sa-steps li {
  counter-increment: sa-step;
  position: relative;
  padding: 1.25rem 1.1rem 1.25rem 3.15rem;
  border-radius: var(--radius);
  background: var(--glass);
  border: 1px solid rgba(196, 181, 253, 0.24);
  transition:
    transform 0.2s var(--ease),
    border-color 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
}

.sa-steps li:hover {
  transform: translateY(-2px);
  border-color: rgba(196, 181, 253, 0.4);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
}

.sa-steps li::before {
  content: counter(sa-step);
  position: absolute;
  left: 0.95rem;
  top: 1.25rem;
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(124, 77, 219, 0.35);
  border: 2px solid rgba(255, 255, 255, 0.55);
  font-family: var(--font-display);
  font-size: 0.7rem;
  color: var(--text);
}

.sa-steps strong {
  display: block;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--text);
}

.sa-steps span {
  font-size: 0.94rem;
  color: var(--muted);
  line-height: 1.5;
}

/* Use cases */
.sa-usecases {
  margin: 0 auto;
  max-width: 38rem;
  padding: 1.5rem 1.5rem 1.5rem 1.65rem;
  border-radius: var(--radius);
  background: rgba(14, 14, 16, 0.42);
  border: 1px solid rgba(196, 181, 253, 0.2);
}

.sa-usecases li {
  margin-bottom: 0.6rem;
  color: var(--muted);
  line-height: 1.5;
  font-size: 0.98rem;
}

.sa-usecases li:last-child {
  margin-bottom: 0;
}

/* Final CTA */
.sa-final {
  text-align: center;
  padding: 2.75rem 1.5rem;
  margin-top: 0.5rem;
  border-radius: 1.75rem;
  background: linear-gradient(120deg, rgba(124, 77, 219, 0.2) 0%, rgba(28, 14, 48, 0.65) 100%);
  border: 2px solid var(--card-edge);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
}

.sa-final p {
  margin: 0 0 1.5rem;
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--muted);
  max-width: 26rem;
  margin-left: auto;
  margin-right: auto;
}

.sa-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--faint);
  letter-spacing: 0.02em;
}

.sa-footer a {
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.sa-footer a:hover,
.sa-footer a:focus-visible {
  color: var(--link-hover);
  border-bottom-color: rgba(196, 181, 253, 0.4);
}