/* SpoknLabs — design language borrowed from the Spokn iOS and macOS apps.
   Dark-first, signal red accent (#FF5A4A), system fonts, continuous rounded corners. */

/* ---------- Tokens ---------- */
:root {
  --bg: #0A0B0F;
  --bg-elev: #14161C;
  --bg-card: #1A1D25;
  --bg-card-2: #212530;
  --text: #F4F4F6;
  --text-dim: rgba(244, 244, 246, 0.64);
  --text-faint: rgba(244, 244, 246, 0.40);
  --text-ghost: rgba(244, 244, 246, 0.22);
  --hair: rgba(255, 255, 255, 0.06);
  --hair-2: rgba(255, 255, 255, 0.10);

  --signal: #FF5A4A;
  --coral: #FF7A59;
  --amber: #FFB340;
  --red: #FF3B30;
  --ok: #30D158;
  --violet: #9B8CFF;
  --cyan: #5AC8FA;

  --radius-xs: 8px;
  --radius-sm: 10px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.4, 1.4, 0.3, 1);

  --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
  --shadow-signal: 0 10px 30px rgba(255, 90, 74, 0.27);
  --shadow-signal-lg: 0 10px 40px rgba(255, 90, 74, 0.33);

  --container: 1120px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #FAFAF9;
    --bg-elev: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-card-2: #F4F4F2;
    --text: #0A0B0F;
    --text-dim: rgba(10, 11, 15, 0.68);
    --text-faint: rgba(10, 11, 15, 0.48);
    --text-ghost: rgba(10, 11, 15, 0.22);
    --hair: rgba(0, 0, 0, 0.08);
    --hair-2: rgba(0, 0, 0, 0.12);
    --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.06);
  }
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0A0B0F;
  --bg-elev: #14161C;
  --bg-card: #1A1D25;
  --bg-card-2: #212530;
  --text: #F4F4F6;
  --text-dim: rgba(244, 244, 246, 0.64);
  --text-faint: rgba(244, 244, 246, 0.40);
  --text-ghost: rgba(244, 244, 246, 0.22);
  --hair: rgba(255, 255, 255, 0.06);
  --hair-2: rgba(255, 255, 255, 0.10);
  --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #FAFAF9;
  --bg-elev: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-card-2: #F4F4F2;
  --text: #0A0B0F;
  --text-dim: rgba(10, 11, 15, 0.68);
  --text-faint: rgba(10, 11, 15, 0.48);
  --text-ghost: rgba(10, 11, 15, 0.22);
  --hair: rgba(0, 0, 0, 0.08);
  --hair-2: rgba(0, 0, 0, 0.12);
  --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.06);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display",
               "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
  border-radius: 4px;
}

button { font: inherit; background: none; border: 0; color: inherit; cursor: pointer; }

::selection { background: rgba(255, 90, 74, 0.28); color: var(--text); }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--text);
}

h1 { font-size: clamp(40px, 7vw, 64px); letter-spacing: -0.035em; }
h2 { font-size: clamp(28px, 4vw, 40px); }
h3 { font-size: 22px; letter-spacing: -0.02em; }
h4 { font-size: 17px; letter-spacing: -0.015em; }

.eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
}

p { color: var(--text-dim); }

.wordmark {
  font-weight: 700;
  letter-spacing: -0.03em;
}
.wordmark .wordmark-dot {
  color: var(--signal);
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

section { padding-block: clamp(56px, 9vw, 100px); }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--hair);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 16px;
  color: var(--text);
}

.nav-brand .glyph {
  width: 22px;
  height: 22px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 500;
  transition: color 180ms var(--ease-in-out);
}

.nav-links a:hover, .nav-links a[aria-current="page"] {
  color: var(--text);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid var(--hair-2);
  color: var(--text-dim);
  transition: color 180ms var(--ease-in-out), background 180ms var(--ease-in-out);
}

.theme-toggle:hover { color: var(--text); background: var(--bg-card); }

.theme-toggle svg { width: 16px; height: 16px; }
[data-theme="dark"] .icon-light, :root:not([data-theme="light"]) .icon-light { display: none; }
[data-theme="light"] .icon-dark { display: none; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .icon-dark { display: none; }
  :root:not([data-theme]) .icon-light { display: inline-block; }
}

@media (max-width: 640px) {
  .nav-links { gap: 14px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .download-card { padding: 24px; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: clamp(72px, 14vw, 140px) clamp(48px, 8vw, 96px);
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  inset: -20% -20% auto -20%;
  height: 90%;
  background: radial-gradient(
    ellipse 50% 55% at 50% 15%,
    rgba(255, 90, 74, 0.20),
    rgba(255, 90, 74, 0) 60%
  );
  pointer-events: none;
  z-index: 0;
}

@media (prefers-color-scheme: light) {
  .hero-glow {
    background: radial-gradient(
      ellipse 50% 55% at 50% 15%,
      rgba(255, 90, 74, 0.10),
      rgba(255, 90, 74, 0) 60%
    );
  }
}

[data-theme="light"] .hero-glow {
  background: radial-gradient(
    ellipse 50% 55% at 50% 15%,
    rgba(255, 90, 74, 0.10),
    rgba(255, 90, 74, 0) 60%
  );
}

.hero-inner { position: relative; z-index: 1; max-width: 860px; }

.hero .lede {
  font-size: clamp(18px, 2vw, 21px);
  color: var(--text-dim);
  margin-top: 20px;
  max-width: 640px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 22px;
  border-radius: var(--radius-lg);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: transform 180ms var(--ease-out),
              box-shadow 220ms var(--ease-out),
              background 180ms var(--ease-in-out),
              border-color 180ms var(--ease-in-out);
  white-space: nowrap;
  cursor: pointer;
}

.btn-primary {
  background: var(--signal);
  color: #fff;
  box-shadow: var(--shadow-signal);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-signal-lg); }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--hair-2);
}
.btn-secondary:hover { background: var(--bg-card); border-color: var(--hair-2); }

.btn-ghost { color: var(--text-dim); padding: 0 12px; }
.btn-ghost:hover { color: var(--text); }

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--hair);
  border-radius: var(--radius-xl);
  padding: 28px;
  transition: border-color 180ms var(--ease-in-out), transform 220ms var(--ease-out);
}

.card:hover { border-color: var(--hair-2); }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* ---------- App card ---------- */
.app-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
  text-decoration: none;
  color: inherit;
}

.app-card:hover { transform: translateY(-2px); border-color: var(--hair-2); }

.app-head {
  display: flex;
  gap: 18px;
  align-items: center;
}

.app-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: radial-gradient(
    circle at 50% 38%,
    rgba(255, 90, 74, 0.22),
    var(--bg-card-2) 72%
  );
  color: var(--signal);
  border: 1px solid var(--hair-2);
  flex-shrink: 0;
}

.app-icon svg { width: 28px; height: 28px; }

.app-card h3 { margin-bottom: 2px; }
.app-card .app-sub { font-size: 13px; color: var(--text-faint); }
.app-card p { margin-top: 4px; }

.app-meta {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--hair);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-faint);
  font-size: 13px;
}

.app-meta .arrow {
  color: var(--signal);
  font-weight: 600;
  transition: transform 180ms var(--ease-out);
}
.app-card:hover .arrow { transform: translateX(4px); }

.platforms { display: inline-flex; gap: 6px; }
.platforms span {
  padding: 4px 10px;
  background: var(--bg-card-2);
  border-radius: 999px;
  color: var(--text-dim);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ---------- Download card ---------- */
.download-grid {
  align-items: stretch;
}

.download-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 32px;
  background:
    radial-gradient(circle at top right, color-mix(in srgb, var(--signal) 16%, transparent), transparent 34%),
    var(--bg-card);
}

.download-card-copy {
  display: grid;
  gap: 10px;
  flex: 1;
}

.download-actions {
  margin-top: 24px;
}

/* ---------- Value cards ---------- */
.value-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 20px;
  color: var(--signal);
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: color-mix(in srgb, var(--signal) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--signal) 22%, transparent);
}
.value-icon svg { width: 20px; height: 20px; }
.value-card h3 { margin-bottom: 8px; }
.value-card p { font-size: 15px; }

/* ---------- Section head ---------- */
.section-head { margin-bottom: 40px; max-width: 640px; }
.section-head .eyebrow { margin-bottom: 14px; display: inline-block; }
.section-head h2 { margin-bottom: 12px; }
.section-head p { font-size: 17px; max-width: 560px; }

/* ---------- Docs (long-form) ---------- */
.doc {
  max-width: 720px;
  margin: 0 auto;
  padding-block: clamp(40px, 6vw, 72px);
}

.doc > .eyebrow { margin-bottom: 16px; display: inline-block; }
.doc h1 { font-size: clamp(32px, 5vw, 44px); margin-bottom: 10px; }
.doc .updated { color: var(--text-faint); font-size: 14px; margin-bottom: 40px; }

.doc h2 {
  font-size: 24px;
  margin-top: 48px;
  margin-bottom: 12px;
}
.doc h3 { font-size: 18px; margin-top: 32px; margin-bottom: 10px; }

.doc p { margin-bottom: 16px; line-height: 1.65; }

.doc ul {
  color: var(--text-dim);
  padding-left: 22px;
  margin-bottom: 16px;
  line-height: 1.65;
}
.doc ul ul { margin-top: 6px; margin-bottom: 6px; }
.doc li { margin-bottom: 6px; }

.doc a:not(.btn) {
  color: var(--signal);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 180ms var(--ease-in-out);
}
.doc a:not(.btn):hover { color: var(--coral); }

.doc strong { color: var(--text); font-weight: 600; }

.doc-toc {
  background: var(--bg-card);
  border: 1px solid var(--hair);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin: 24px 0 32px;
}
.doc-toc .eyebrow { margin-bottom: 8px; display: block; }
.doc-toc ul { padding-left: 18px; margin: 0; }
.doc-toc li { margin-bottom: 4px; }
.doc-toc a { text-decoration: none; color: var(--text-dim); }
.doc-toc a:hover { color: var(--text); }

/* ---------- Contact card ---------- */
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--hair);
  border-radius: var(--radius-xl);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.contact-card .email {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--signal);
}
.contact-card .email:hover { color: var(--coral); }

/* ---------- Feature list ---------- */
.feature-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.feature-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.55;
}
.feature-list .check {
  color: var(--signal);
  flex-shrink: 0;
  margin-top: 4px;
  width: 16px;
  height: 16px;
}

/* ---------- Pill ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--hair-2);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}
.pill .pill-dot {
  width: 6px;
  height: 6px;
  background: var(--ok);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--ok);
}

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--hair);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 180ms var(--ease-in-out);
}
.faq-item:hover { border-color: var(--hair-2); }
.faq-item[open] { border-color: var(--hair-2); }
.faq-item summary {
  padding: 18px 22px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  color: var(--signal);
  font-size: 20px;
  font-weight: 400;
  transition: transform 200ms var(--ease-out);
  width: 20px;
  text-align: center;
  line-height: 1;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item .faq-body {
  padding: 0 22px 20px;
  color: var(--text-dim);
  line-height: 1.65;
}

/* ---------- 404 ---------- */
.notfound {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px 24px;
}
.notfound .code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  color: var(--signal);
  font-size: 14px;
  letter-spacing: 0.12em;
  margin-bottom: 14px;
}
.notfound h1 { margin-bottom: 12px; }
.notfound p { max-width: 440px; margin-inline: auto; }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--hair);
  padding-block: 48px;
  margin-top: 80px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 40px;
  align-items: center;
  justify-content: space-between;
  color: var(--text-faint);
  font-size: 13px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-dim);
  font-weight: 600;
}
.footer-brand .glyph { width: 18px; height: 18px; }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-links a { color: var(--text-dim); transition: color 180ms var(--ease-in-out); }
.footer-links a:hover { color: var(--text); }

/* ---------- Liquid dot (signature motion) ---------- */
@keyframes liquid-pulse {
  0%, 100% { transform: scale(1); border-radius: 50%; }
  40% { transform: scale(1.15); border-radius: 36% 64% 58% 42% / 52% 44% 56% 48%; }
  70% { transform: scale(0.95); border-radius: 60% 40% 45% 55% / 48% 58% 42% 52%; }
}

.liquid-dot {
  width: 12px;
  height: 12px;
  background: var(--signal);
  border-radius: 50%;
  animation: liquid-pulse 3.2s var(--ease-in-out) infinite;
  box-shadow: 0 0 20px rgba(255, 90, 74, 0.5);
}

/* ---------- Utility ---------- */
.text-signal { color: var(--signal); }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }