/* ========================================================================
   TR Studios — shared stylesheet
   Aesthetic: "Studio log" — editorial, warm, considered
   ======================================================================== */

:root {
  /* Palette — warm cream (light mode default) */
  --bg: #F3EADC;
  --bg-raised: #EEE3D1;
  --bg-sunk: #E4D6BD;
  --ink: #1E1712;
  --ink-soft: #5A4B3E;
  --ink-faint: #96836F;
  --rule: #D9CBB4;
  --accent: #B04915;
  --accent-hover: #8D3A0E;
  --selection: #E8A86B;

  /* Typography */
  --font-display: 'Clash Display', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-body: 'Switzer', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* Fluid scale */
  --step--1: clamp(0.75rem, 0.72rem + 0.15vw, 0.8125rem);
  --step-0:  clamp(0.9375rem, 0.9rem + 0.25vw, 1.0625rem);
  --step-1:  clamp(1.0625rem, 1rem + 0.3vw, 1.25rem);
  --step-2:  clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  --step-3:  clamp(1.625rem, 1.4rem + 1vw, 2.25rem);
  --step-4:  clamp(2.25rem, 1.9rem + 1.8vw, 3.5rem);
  --step-5:  clamp(3rem, 2.3rem + 3.5vw, 5.5rem);
  --step-6:  clamp(4rem, 2.8rem + 6vw, 8.5rem);

  /* Layout */
  --container: 76rem;
  --measure: 38rem;
  --gutter: clamp(1.25rem, 1rem + 2vw, 2.5rem);
  --rule-weight: 1px;

  /* Motion */
  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171210;
    --bg-raised: #1E1814;
    --bg-sunk: #100C0A;
    --ink: #F2E7D6;
    --ink-soft: #B8A692;
    --ink-faint: #6D5E4E;
    --rule: #382D23;
    --accent: #E89B5A;
    --accent-hover: #F3B582;
    --selection: #703A17;
  }
}

/* ----- Reset ----- */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.55;
  font-feature-settings: "ss01", "ss02", "cv11";
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; background: none; border: 0; cursor: pointer; color: inherit; }
::selection { background: var(--selection); color: var(--ink); }

/* Gentle paper grain — visible in light mode, softer in dark */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background-image:
    radial-gradient(circle at 20% 0%, rgba(176, 73, 21, 0.04), transparent 50%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.09 0 0 0 0 0.08 0 0 0 0.09 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
  opacity: 0.7;
}
@media (prefers-color-scheme: dark) {
  body::before {
    mix-blend-mode: screen;
    opacity: 0.35;
    background-image:
      radial-gradient(circle at 80% 0%, rgba(232, 155, 90, 0.05), transparent 50%),
      url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.95 0 0 0 0 0.88 0 0 0 0 0.75 0 0 0 0.06 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  }
}

/* ----- Typography primitives ----- */

.display, h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 0.95;
  color: var(--ink);
}

.mono, .label {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.body-prose p {
  max-width: var(--measure);
  color: var(--ink-soft);
  font-size: var(--step-1);
  line-height: 1.65;
}
.body-prose p + p { margin-top: 1em; }
.body-prose strong { color: var(--ink); font-weight: 600; }

/* Links in prose */
.body-prose a, a.inline {
  color: var(--accent);
  border-bottom: 1px solid currentColor;
  padding-bottom: 0.1em;
  transition: color 0.2s var(--ease);
}
.body-prose a:hover, a.inline:hover { color: var(--accent-hover); }

/* ----- Layout primitives ----- */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  z-index: 2;
}

.rule {
  border: 0;
  border-top: var(--rule-weight) solid var(--rule);
  margin: 0;
}

/* Two-column layout (label column + content column) */
.grid-editorial {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: start;
}
@media (max-width: 720px) {
  .grid-editorial { grid-template-columns: 1fr; gap: 1rem; }
}

/* ----- Top nav ----- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  backdrop-filter: saturate(1.2) blur(12px);
  -webkit-backdrop-filter: saturate(1.2) blur(12px);
  border-bottom: var(--rule-weight) solid transparent;
  transition: border-color 0.25s var(--ease);
}
.nav.is-scrolled { border-bottom-color: var(--rule); }

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--gutter);
  max-width: var(--container);
  margin: 0 auto;
  gap: 1.5rem;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  flex-shrink: 0;
  white-space: nowrap;
}
.wordmark__mark {
  width: 1.8rem;
  height: 1.8rem;
  display: block;
  border-radius: 5px;
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}
.wordmark__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.02em;
}

.nav__links {
  display: flex;
  gap: 1.75rem;
  align-items: center;
}
.nav__links a {
  font-size: var(--step-0);
  color: var(--ink-soft);
  transition: color 0.2s var(--ease);
  position: relative;
}
.nav__links a:hover { color: var(--ink); }
.nav__links a[aria-current="page"] { color: var(--ink); }
.nav__links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: var(--accent);
}
@media (max-width: 560px) {
  .wordmark__name { display: none; }
  .nav__links { gap: 1.1rem; }
  .nav__links a { font-size: 0.9375rem; }
}

/* ----- Section scaffold ----- */

.section { padding: clamp(4rem, 8vw, 7rem) 0; }
.section--tight { padding: clamp(2.5rem, 5vw, 4rem) 0; }

.section-label {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  color: var(--ink-faint);
}
.section-label__num {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--ink-soft);
}
.section-label__name {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}

/* ----- Hero ----- */

.hero {
  padding: clamp(5rem, 10vw, 9rem) 0 clamp(4rem, 8vw, 7rem);
  position: relative;
}
.hero__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  flex-wrap: wrap;
  gap: 1rem;
}
.hero__head .meta {
  text-align: right;
  color: var(--ink-faint);
}
.hero__head .meta > * { display: block; font-family: var(--font-mono); font-size: var(--step--1); letter-spacing: 0.04em; }
.hero__head .meta .loc { color: var(--ink-soft); margin-top: 0.15rem; }

.hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-6);
  line-height: 0.92;
  letter-spacing: -0.035em;
  color: var(--ink);
}
.hero__title .accent { color: var(--accent); }

.hero__subline {
  margin-top: clamp(2rem, 4vw, 3rem);
  max-width: 34rem;
  color: var(--ink-soft);
  font-size: var(--step-2);
  line-height: 1.5;
  font-weight: 400;
}

.hero--inner {
  padding: clamp(4rem, 7vw, 6rem) 0 clamp(2rem, 5vw, 3.5rem);
}
.hero--inner .hero__title { font-size: var(--step-5); }

/* App product hero — big app icon + title on inner app pages */
.app-hero {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
}
.app-hero__icon {
  width: clamp(88px, 11vw, 128px);
  height: clamp(88px, 11vw, 128px);
  border-radius: clamp(18px, 2.2vw, 28px);
  box-shadow:
    0 1px 0 rgba(0,0,0,0.08),
    0 10px 28px rgba(30, 23, 18, 0.14);
}
.app-hero__body {
  display: flex;
  flex-direction: column;
  gap: clamp(1rem, 2vw, 1.5rem);
  min-width: 0;
}
.hero__deck {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-3);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--ink-soft);
  max-width: 22ch;
}
.hero__deck .accent { color: var(--accent); }

@media (max-width: 640px) {
  .app-hero {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .app-hero__icon {
    width: 88px;
    height: 88px;
  }
}

/* ----- Apps list (studio log entries) ----- */

.apps { display: flex; flex-direction: column; }
.app-row {
  display: grid;
  grid-template-columns: 10rem 1fr auto;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: center;
  padding: clamp(1.75rem, 3vw, 2.5rem) 0;
  border-top: var(--rule-weight) solid var(--rule);
  transition: background 0.25s var(--ease), padding 0.25s var(--ease);
  position: relative;
}
.app-row:last-child { border-bottom: var(--rule-weight) solid var(--rule); }
.app-row:hover { background: var(--bg-raised); }

.app-row__meta {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.app-row__meta .num { color: var(--accent); font-weight: 500; }

.app-row__body { display: flex; gap: clamp(1rem, 2vw, 1.75rem); align-items: center; min-width: 0; }
.app-row__icon {
  width: 4.25rem;
  height: 4.25rem;
  border-radius: 0.95rem;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  box-shadow:
    0 1px 0 rgba(0,0,0,0.05),
    0 2px 8px rgba(30, 23, 18, 0.08);
  position: relative;
  overflow: hidden;
}
.app-row__icon--img {
  object-fit: cover;
  display: block;
}

.app-row__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-3);
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--ink);
}
.app-row__tag {
  margin-top: 0.25rem;
  color: var(--ink-soft);
  font-size: var(--step-0);
  line-height: 1.45;
  max-width: 32rem;
}
.app-row__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  transition: color 0.2s var(--ease), transform 0.25s var(--ease);
}
.app-row__cta svg { transition: transform 0.25s var(--ease); }
.app-row:hover .app-row__cta { color: var(--accent); }
.app-row:hover .app-row__cta svg { transform: translateX(4px); }
.app-row__link { position: absolute; inset: 0; cursor: pointer; }

@media (max-width: 780px) {
  .app-row { grid-template-columns: 1fr; gap: 1rem; padding: 2rem 0; }
  .app-row__meta { flex-direction: row; gap: 1rem; }
  .app-row__cta { align-self: flex-start; }
}

/* Reserved slot — "future apps" placeholder */
.app-row--reserved {
  opacity: 0.55;
  pointer-events: none;
}
.app-row--reserved .app-row__icon {
  background: transparent;
  border: 1px dashed var(--rule);
  box-shadow: none;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}
.app-row--reserved .app-row__name { color: var(--ink-faint); font-weight: 500; }

/* ----- Studio note ----- */

.studio-note {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: clamp(1.5rem, 3vw, 3rem);
  padding-top: clamp(2rem, 4vw, 3rem);
}
@media (max-width: 720px) { .studio-note { grid-template-columns: 1fr; } }

.studio-note__lede {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-4);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink);
  max-width: 22ch;
  margin-bottom: 1.5rem;
}

/* ----- Feature / detail grid (used on /audioshelf) ----- */

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1px;
  background: var(--rule);
  border: var(--rule-weight) solid var(--rule);
}
.feature {
  padding: clamp(1.25rem, 2vw, 1.75rem);
  background: var(--bg);
  min-height: 11rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.feature__num {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--accent);
  letter-spacing: 0.1em;
}
.feature__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-2);
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.15;
}
.feature__body {
  color: var(--ink-soft);
  font-size: var(--step-0);
  line-height: 1.5;
}

/* App Store badge — official Apple lockup. Per Apple guidelines:
   minimum 40pt height, clear space ≥ 1/10 badge height all around, no modification.
   Light mode shows the black lockup; dark mode swaps to white via <picture>. */
.store-badge {
  display: inline-block;
  line-height: 0;
  padding: 5px;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.store-badge img { height: 48px; width: auto; display: block; }
.store-badge:hover { transform: translateY(-1px); opacity: 0.85; }
.store-badge:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 4px; }

/* ----- Legal / prose pages (privacy, support) ----- */

.prose {
  max-width: var(--measure);
}
.prose h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-3);
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-top: 3rem;
  margin-bottom: 0.75rem;
  line-height: 1.1;
}
.prose h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-2);
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}
.prose p, .prose li {
  color: var(--ink-soft);
  font-size: var(--step-1);
  line-height: 1.65;
}
.prose p + p, .prose ul + p, .prose p + ul { margin-top: 1em; }
.prose ul { padding-left: 1.2em; margin-top: 0.5em; }
.prose li + li { margin-top: 0.3em; }
.prose li::marker { color: var(--ink-faint); }
.prose strong { color: var(--ink); font-weight: 600; }

.prose-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2rem;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: var(--rule-weight) solid var(--rule);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}
.prose-meta strong { color: var(--ink); font-weight: 500; }

/* ----- Contact card (support page) ----- */

.contact-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: var(--rule-weight) solid var(--rule);
  background: var(--bg-raised);
  margin: 2rem 0;
}
@media (max-width: 640px) { .contact-card { grid-template-columns: 1fr; } }
.contact-card__panel {
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border-right: var(--rule-weight) solid var(--rule);
}
@media (max-width: 640px) {
  .contact-card__panel { border-right: 0; border-bottom: var(--rule-weight) solid var(--rule); }
  .contact-card__panel:last-child { border-bottom: 0; }
}
.contact-card__panel:last-child { border-right: 0; }
.contact-card__label {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  margin-bottom: 0.5rem;
}
.contact-card__value {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-2);
  letter-spacing: -0.015em;
  color: var(--ink);
  line-height: 1.2;
  word-break: break-word;
}
.contact-card__value a { color: var(--accent); }
.contact-card__value a:hover { color: var(--accent-hover); }
.contact-card__note {
  margin-top: 0.5rem;
  color: var(--ink-soft);
  font-size: var(--step-0);
  line-height: 1.5;
}

/* ----- FAQ ----- */

.faq { border-top: var(--rule-weight) solid var(--rule); }
.faq details {
  border-bottom: var(--rule-weight) solid var(--rule);
  padding: 1.5rem 0;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-2);
  letter-spacing: -0.015em;
  color: var(--ink);
  gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--ink-faint);
  font-size: 1.5rem;
  transition: transform 0.25s var(--ease), color 0.2s var(--ease);
  flex: 0 0 auto;
}
.faq details[open] summary::after { content: "–"; color: var(--accent); }
.faq details > *:not(summary) {
  margin-top: 1rem;
  color: var(--ink-soft);
  font-size: var(--step-1);
  line-height: 1.6;
  max-width: var(--measure);
}

/* ----- Footer ----- */

.footer {
  margin-top: clamp(4rem, 8vw, 7rem);
  padding: clamp(2.5rem, 5vw, 4rem) 0 clamp(1.5rem, 3vw, 2.5rem);
  border-top: var(--rule-weight) solid var(--rule);
  background: var(--bg-sunk);
  position: relative;
  z-index: 2;
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}
@media (max-width: 720px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 440px) {
  .footer__grid { grid-template-columns: 1fr; }
}
.footer__col h4 {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.85rem;
}
.footer__col ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 0.5rem; }
.footer__col a { color: var(--ink-soft); font-size: var(--step-0); transition: color 0.2s var(--ease); }
.footer__col a:hover { color: var(--ink); }

.footer__studio {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-3);
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 0.5rem;
  line-height: 1;
}
.footer__blurb {
  color: var(--ink-soft);
  font-size: var(--step-0);
  line-height: 1.5;
  max-width: 28ch;
}

.footer__base {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: var(--rule-weight) solid var(--rule);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  flex-wrap: wrap;
}
.footer__base .mark-lg {
  width: clamp(5rem, 14vw, 10rem);
  height: auto;
  opacity: 0.18;
  user-select: none;
  display: block;
}
@media (prefers-color-scheme: dark) {
  .footer__base .mark-lg { opacity: 0.28; }
}
@media (max-width: 560px) {
  .footer__base { flex-direction: column; align-items: flex-start; }
}

/* ----- Arrow utility ----- */

.arrow {
  display: inline-block;
  width: 0.85em;
  height: 0.85em;
  vertical-align: middle;
  stroke: currentColor;
  stroke-width: 1.6;
  fill: none;
}

/* ----- Enter animations ----- */

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

.reveal {
  animation: rise 0.9s var(--ease-out) both;
}
.reveal[data-d="1"] { animation-delay: 0.08s; }
.reveal[data-d="2"] { animation-delay: 0.16s; }
.reveal[data-d="3"] { animation-delay: 0.24s; }
.reveal[data-d="4"] { animation-delay: 0.32s; }
.reveal[data-d="5"] { animation-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { animation: none; }
  * { transition: none !important; }
}

/* Focus styles */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}