/* site.css — BrowserBox marketing and documentation pages */

* {
  box-sizing: border-box;
}

:root {
  color-scheme: light dark;
  --max-w: 1140px;
  --font-body: "Avenir Next", "Nunito Sans", "Segoe UI", sans-serif;
  --font-display: "Trebuchet MS", "Avenir Next", "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", "Consolas", monospace;
  --radius-xs: 0.45rem;
  --radius-sm: 0.75rem;
  --radius-md: 1rem;
  --radius-lg: 1.25rem;
  --radius: var(--radius-sm);
  --shadow-soft: 0 14px 38px -26px rgba(16, 24, 40, 0.45);
  --shadow-lift: 0 24px 60px -34px rgba(16, 24, 40, 0.38);

  --bg: #f3f6fb;
  --bg-elev: #ffffff;
  --bg-soft: #e9eef8;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: #ffffff;
  --surface-hover: #f7f9ff;
  --border: rgba(19, 44, 77, 0.14);
  --border-strong: rgba(19, 44, 77, 0.22);
  --text: #0f2137;
  --text-muted: #3f5a79;
  --text-soft: #5f7998;
  --white: var(--text);
  --accent: #0c7a7f;
  --accent-strong: #076367;
  --accent-light: var(--accent-strong);
  --accent-soft: rgba(12, 122, 127, 0.16);
  --accent-glow: rgba(15, 143, 149, 0.3);
  --danger: #a83e4d;
  --ok: #1c7f52;
  --code-bg: #f6f9ff;
  --code-border: rgba(23, 53, 93, 0.16);
  --code-inline: #edf4ff;
  --code-kw: #184f8a;
  --code-fn: #0d5d63;
  --code-str: #7d3714;
  --code-cmt: #516a89;
  --nav-bg: rgba(245, 248, 253, 0.82);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111a2a;
    --bg-elev: #152235;
    --bg-soft: #1a2a41;
    --surface: rgba(30, 45, 68, 0.88);
    --surface-strong: #21344f;
    --surface-hover: #28405f;
    --border: rgba(158, 188, 223, 0.18);
    --border-strong: rgba(158, 188, 223, 0.28);
    --text: #e4edf8;
    --text-muted: #bdd0e6;
    --text-soft: #a3bad4;
    --accent: #4bd2cf;
    --accent-strong: #7fe5e2;
    --accent-soft: rgba(75, 210, 207, 0.16);
    --accent-glow: rgba(103, 227, 224, 0.35);
    --danger: #f38ca0;
    --ok: #65d8a1;
    --code-bg: #1a2a40;
    --code-border: rgba(167, 199, 235, 0.2);
    --code-inline: #21344f;
    --code-kw: #8fc5ff;
    --code-fn: #7fe5e2;
    --code-str: #ffbf8d;
    --code-cmt: #a9bed8;
    --nav-bg: rgba(17, 27, 43, 0.8);
    --shadow-soft: 0 20px 44px -30px rgba(4, 9, 16, 0.9);
    --shadow-lift: 0 30px 70px -40px rgba(4, 9, 16, 0.85);
  }
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  line-height: 1.68;
  letter-spacing: 0.004em;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 2%, var(--accent-soft) 0, transparent 42%),
    radial-gradient(circle at 92% 4%, rgba(43, 126, 196, 0.18) 0, transparent 38%),
    linear-gradient(180deg, var(--bg) 0%, color-mix(in oklab, var(--bg) 90%, #000 10%) 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: auto;
  width: min(34vw, 460px);
  height: min(34vw, 460px);
  border-radius: 999px;
  z-index: -1;
  pointer-events: none;
  filter: blur(62px);
  opacity: 0.28;
}

body::before {
  left: -6rem;
  top: 12vh;
  background: var(--accent-glow);
}

body::after {
  right: -8rem;
  bottom: 18vh;
  background: color-mix(in oklab, #6eaee6 70%, var(--accent) 30%);
}

img,
svg,
video {
  max-width: 100%;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code,
pre {
  font-family: var(--font-mono);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 0.5rem;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  padding: 0 1.25rem;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
}

.nav-inner {
  height: 68px;
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--text);
}

.logo:hover {
  text-decoration: none;
}

.logo .win {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  list-style: none;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-soft);
  font-weight: 650;
  font-size: 0.88rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

.container {
  width: min(var(--max-w), 100% - 2.5rem);
  margin: 0 auto;
}

.hero {
  width: min(var(--max-w), 100% - 2.5rem);
  margin: 0 auto;
  padding: 6.8rem 0 4.9rem;
  text-align: center;
  animation: rise-fade 480ms ease-out both;
}

.hero h1 {
  margin: 0;
  color: var(--text);
  font-size: clamp(2.35rem, 5.9vw, 4.3rem);
  line-height: 1.06;
  letter-spacing: -0.025em;
}

.hero h1 .accent {
  color: var(--accent);
}

.subtitle {
  margin: 1.6rem auto 0;
  max-width: 68ch;
  color: var(--text-muted);
  font-size: clamp(1.03rem, 2.7vw, 1.26rem);
}

.ctas {
  margin-top: 2.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 620;
  letter-spacing: 0.01em;
  line-height: 1;
  border-radius: 999px;
  border: 1px solid transparent;
  min-height: 2.8rem;
  padding: 0.75rem 1.28rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform 150ms ease, border-color 150ms ease, background-color 150ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), color-mix(in oklab, var(--accent) 70%, #8ce5ef 30%));
  color: #f8fffe;
  border-color: color-mix(in oklab, var(--accent) 74%, #9fe9ef 26%);
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
  border-color: var(--accent-strong);
}

.btn-outline {
  background: color-mix(in oklab, var(--surface-strong) 84%, transparent 16%);
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-outline:hover {
  border-color: var(--accent);
  background: color-mix(in oklab, var(--surface-strong) 66%, var(--accent-soft) 34%);
}

.demo-showcase {
  width: min(var(--max-w), 100% - 2.5rem);
  margin: 0 auto;
  padding-bottom: 1.2rem;
}

.demo-frame {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 360px;
  box-shadow: var(--shadow-lift);
  background: linear-gradient(145deg, var(--bg-soft), var(--bg-elev));
  position: relative;
}

.demo-frame .overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, transparent 0%, rgba(8, 17, 28, 0.24) 100%);
}

.section {
  padding: 5.6rem 0;
}

.section + .section {
  border-top: 1px solid var(--border);
}

.section-title {
  margin: 0;
  text-align: center;
  color: var(--text);
  font-size: clamp(1.62rem, 4.7vw, 2.45rem);
  line-height: 1.15;
}

.section-subtitle {
  margin: 1rem auto 0;
  text-align: center;
  color: var(--text-muted);
  max-width: 64ch;
  font-size: 1.03rem;
}

.features-grid,
.pricing-grid,
.docs-grid {
  margin-top: 2rem;
  display: grid;
  gap: 1.15rem;
}

.features-grid {
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.pricing-grid {
  grid-template-columns: repeat(auto-fit, minmax(235px, 1fr));
}

.docs-grid {
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
}

.feature-card,
.price-card,
.doc-card,
.endpoint,
.info-card,
.endpoint-body .code-inline,
.code-block,
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.feature-card,
.price-card,
.doc-card,
.info-card {
  padding: 1.3rem;
}

.feature-card,
.price-card,
.doc-card {
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.feature-card:hover,
.price-card:hover,
.doc-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: var(--surface-hover);
}

.feature-card .icon {
  font-size: 1.35rem;
  display: inline-flex;
  width: 2.2rem;
  height: 2.2rem;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--accent-soft);
  margin-bottom: 0.85rem;
}

.feature-card h3,
.price-card h3,
.doc-card h3 {
  margin: 0;
  font-size: 1.02rem;
}

.feature-card p,
.price-card p,
.doc-card p {
  margin: 0.65rem 0 0;
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.6;
}

.price-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.price-card.featured {
  border-color: var(--accent);
  position: relative;
}

.price-card.featured::before {
  content: "Best value";
  position: absolute;
  top: 0.7rem;
  right: 0.9rem;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--accent-soft);
  color: var(--accent-strong);
  border: 1px solid color-mix(in oklab, var(--accent) 56%, transparent 44%);
  border-radius: 999px;
  padding: 0.2rem 0.5rem;
}

.price {
  margin-top: 0.8rem;
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
}

.price-unit {
  margin-top: 0.25rem;
  color: var(--text-soft);
  font-size: 0.87rem;
}

.details {
  margin: 1rem 0 1.2rem;
  padding: 0;
  list-style: none;
  flex: 1;
}

.details li {
  margin: 0;
  padding: 0.48rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.88rem;
}

.details li::before {
  content: "• ";
  color: var(--accent);
}

.code-block {
  padding: 1.25rem;
  overflow-x: auto;
  border-radius: var(--radius-lg);
}

.code-block pre {
  margin: 0;
  white-space: pre;
  font-size: 0.87rem;
  line-height: 1.75;
  color: var(--text);
}

.code-block .kw { color: var(--code-kw); }
.code-block .fn { color: var(--code-fn); }
.code-block .str { color: var(--code-str); }
.code-block .cmt { color: var(--code-cmt); }

.api-docs {
  width: min(var(--max-w), 100% - 2.5rem);
  margin: 0 auto;
  padding: 3.2rem 0 5rem;
}

.api-docs h1 {
  margin: 0;
  font-size: clamp(2rem, 5.5vw, 3rem);
  line-height: 1.08;
}

.api-docs h2 {
  margin: 0;
  font-size: clamp(1.35rem, 3.7vw, 1.9rem);
  line-height: 1.15;
}

.api-docs h3 {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.25;
}

.api-docs p {
  margin: 0.7rem 0 0;
  color: var(--text-muted);
  max-width: 72ch;
}

.docs-intro {
  display: grid;
  gap: 1.2rem;
  margin-bottom: 2rem;
}

.docs-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-strong);
  background: var(--accent-soft);
  border: 1px solid color-mix(in oklab, var(--accent) 55%, transparent 45%);
  border-radius: 999px;
  padding: 0.3rem 0.62rem;
}

.info-card {
  background: linear-gradient(155deg, var(--surface), color-mix(in oklab, var(--surface) 84%, var(--accent-soft) 16%));
}

.info-list {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
}

.info-list li + li {
  margin-top: 0.36rem;
}

.endpoint {
  overflow: clip;
}

.endpoint + .endpoint {
  margin-top: 1rem;
}

.endpoint-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem;
  padding: 0.95rem 1.1rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface-strong) 78%, var(--accent-soft) 22%);
}

.method {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3.7rem;
  padding: 0.23rem 0.54rem;
  border-radius: 999px;
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 800;
  border: 1px solid transparent;
}

.method-get {
  color: var(--ok);
  background: color-mix(in oklab, var(--ok) 18%, transparent 82%);
  border-color: color-mix(in oklab, var(--ok) 48%, transparent 52%);
}

.method-post {
  color: #2d7bd8;
  background: rgba(45, 123, 216, 0.16);
  border-color: rgba(45, 123, 216, 0.38);
}

.method-delete {
  color: var(--danger);
  background: color-mix(in oklab, var(--danger) 18%, transparent 82%);
  border-color: color-mix(in oklab, var(--danger) 46%, transparent 54%);
}

.endpoint-path {
  font-size: 0.94rem;
  font-weight: 740;
}

.endpoint-body {
  padding: 1.1rem;
}

.endpoint-body p {
  margin-top: 0.4rem;
  line-height: 1.62;
}

.endpoint-body h4 {
  margin: 1rem 0 0.45rem;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-soft);
}

.endpoint-body h4:first-child {
  margin-top: 0;
}

.endpoint-body code {
  background: var(--code-inline);
  border-radius: var(--radius-xs);
  padding: 0.08rem 0.32rem;
  font-size: 0.85em;
}

.code-inline {
  margin-top: 0.5rem;
  padding: 0.95rem;
  display: block;
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  white-space: pre;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.62;
  border-radius: var(--radius-sm);
}

.param-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
  font-size: 0.88rem;
}

.param-table th,
.param-table td {
  text-align: left;
  vertical-align: top;
  padding: 0.45rem 0.4rem;
  border-bottom: 1px solid var(--border);
}

.param-table th {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-soft);
}

.param-table td {
  color: var(--text-muted);
}

.param-table td:first-child {
  color: var(--text);
  font-weight: 650;
}

.param-table td code {
  white-space: nowrap;
}

.docs-section {
  margin-top: 2.1rem;
}

.docs-list {
  margin: 0.7rem 0 0;
  padding-left: 1.1rem;
}

.docs-list li + li {
  margin-top: 0.34rem;
}

.legal {
  width: min(860px, 100% - 2.5rem);
  margin: 0 auto;
  padding: 4rem 0 5rem;
}

.legal h1 {
  margin: 0;
  font-size: clamp(2rem, 4.8vw, 2.7rem);
}

.legal h2 {
  margin: 2.2rem 0 0;
  font-size: 1.15rem;
}

.legal .last-updated {
  margin-top: 0.58rem;
  color: var(--text-soft);
  font-size: 0.86rem;
}

.legal p,
.legal li {
  color: var(--text-muted);
  line-height: 1.7;
}

.legal ul,
.legal ol {
  margin: 0.65rem 0 0;
  padding-left: 1.2rem;
}

.faq {
  max-width: 960px;
  margin: 0 auto;
}

.faq-item {
  margin-top: 0.85rem;
  padding: 0.9rem 1rem;
}

.faq-item summary {
  list-style: none;
  font-weight: 700;
  cursor: pointer;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item p {
  margin-top: 0.6rem;
  color: var(--text-muted);
}

.site-footer {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border);
  padding: 2.4rem 0;
}

.footer-inner {
  width: min(var(--max-w), 100% - 2.5rem);
  margin: 0 auto;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.8rem 1.2rem;
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: var(--text-soft);
  font-size: 0.88rem;
}

.footer-links a:hover {
  color: var(--text);
  text-decoration: none;
}

.copyright {
  margin: 1rem 0 0;
  text-align: center;
  color: var(--text-soft);
  font-size: 0.79rem;
}

@keyframes rise-fade {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.features-grid > *,
.pricing-grid > *,
.docs-grid > * {
  animation: rise-fade 360ms ease both;
}

.features-grid > *:nth-child(1),
.pricing-grid > *:nth-child(1),
.docs-grid > *:nth-child(1) { animation-delay: 70ms; }
.features-grid > *:nth-child(2),
.pricing-grid > *:nth-child(2),
.docs-grid > *:nth-child(2) { animation-delay: 120ms; }
.features-grid > *:nth-child(3),
.pricing-grid > *:nth-child(3),
.docs-grid > *:nth-child(3) { animation-delay: 170ms; }
.features-grid > *:nth-child(4),
.pricing-grid > *:nth-child(4),
.docs-grid > *:nth-child(4) { animation-delay: 220ms; }

@media (max-width: 860px) {
  .site-nav {
    padding-inline: 0.8rem;
  }

  .nav-inner {
    height: auto;
    min-height: 68px;
    padding-block: 0.6rem;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    gap: 0.65rem;
  }

  .hero {
    padding-top: 5.3rem;
    padding-bottom: 3.7rem;
  }

  .section {
    padding: 4.2rem 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}

@media (max-width: 640px) {
  .container,
  .hero,
  .demo-showcase,
  .api-docs,
  .footer-inner,
  .legal {
    width: min(var(--max-w), 100% - 1.35rem);
  }

  .btn {
    width: 100%;
  }

  .ctas {
    width: 100%;
    flex-direction: column;
  }

  .pricing-grid,
  .features-grid,
  .docs-grid {
    grid-template-columns: 1fr;
  }

  .endpoint-header,
  .endpoint-body {
    padding-inline: 0.8rem;
  }

  .param-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}