/* ============================================================================
   Paintrix Studio — documentation styles.
   Same tokens as the marketing site, plus a docs layout (sticky chapter
   sidebar + reading column) modelled on the NeonDAW docs.
   ========================================================================== */

:root {
  --accent: #FF4FC1;
  --accent-2: #8B5CF6;
  --accent-glow: rgba(255, 79, 193, 0.4);
  --accent-subtle: rgba(255, 79, 193, 0.15);
  --lime: #6ee7b7;
  --amber: #fbbf24;
  --cyan: #67e8f9;

  --bg: #0A0A0C;
  --panel: rgba(18, 18, 22, 0.9);
  --panel-hi: rgba(28, 28, 34, 0.95);
  --stroke: rgba(255, 255, 255, 0.08);
  --stroke-2: rgba(255, 255, 255, 0.05);

  --text: #FFFFFF;
  --text-2: rgba(255, 255, 255, 0.7);
  --dim: rgba(255, 255, 255, 0.5);
  --faint: rgba(255, 255, 255, 0.32);

  --sans: "Outfit", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: ui-monospace, "SF Mono", "SFMono-Regular", Menlo, monospace;

  --maxw: 1200px;
  --radius: 18px;
  --radius-sm: 12px;
  --nav-h: 68px;
}

*,
*::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 {
  font-family: var(--sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  z-index: 1000;
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: 16px;
}

.bg-gradient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-subtle), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(139, 92, 246, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 0% 80%, var(--accent-subtle), transparent);
}

.wrap {
  width: min(var(--maxw), calc(100% - 40px));
  margin-inline: auto;
}

/* ---------------------------------------------------------------- nav -- */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--nav-h);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border-bottom: 1px solid var(--stroke);
}

.nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.brand__logo {
  height: 34px;
  width: auto;
}

.brand__name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-2);
}

.nav__links a:hover,
.nav__links a.is-active {
  color: var(--text);
}

.nav__links a.is-active {
  color: var(--accent);
}

.nav__spacer {
  flex: 1;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid transparent;
  transition: transform 0.2s ease, filter 0.2s ease, background 0.2s ease;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
}

.btn--primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.08);
}

.nav__burger {
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 8px;
}

.nav__burger svg {
  width: 100%;
  height: 100%;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 20px 20px;
  background: var(--bg);
  border-bottom: 1px solid var(--stroke);
  position: relative;
  z-index: 39;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  padding: 12px 8px;
  color: var(--text-2);
  font-weight: 500;
  border-radius: 8px;
}

.mobile-menu a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

@media (max-width: 820px) {
  .nav__links,
  .nav__cta {
    display: none;
  }

  .nav__burger {
    display: block;
    margin-left: auto;
  }
}

/* ------------------------------------------------------------- footer -- */
.footer {
  position: relative;
  z-index: 2;
  padding: 56px 0 28px;
  border-top: 1px solid var(--stroke);
  margin-top: 24px;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
  margin-bottom: 36px;
}

.footer__brand p {
  color: var(--text-2);
  font-size: 0.95rem;
  margin-top: 12px;
  max-width: 36ch;
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.footer__col h5 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 12px;
}

.footer__col a {
  display: block;
  color: var(--text-2);
  font-size: 0.95rem;
  padding: 4px 0;
}

.footer__col a:hover {
  color: var(--accent);
}

.footer__bar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 20px;
  border-top: 1px solid var(--stroke);
  color: var(--faint);
  font-size: 0.85rem;
}

@media (max-width: 820px) {
  .footer__top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer__cols {
    grid-template-columns: 1fr 1fr;
  }
}

/* ----------------------------------------------------------- back to top */
.to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 30;
  width: 42px;
  height: 42px;
  border: 1px solid var(--stroke);
  border-radius: 12px;
  background: var(--panel);
  color: var(--text);
  padding: 10px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.to-top.is-in {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

.to-top svg {
  width: 100%;
  height: 100%;
}

.to-top:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
}

/* ============================================================== docs -- */
.docs {
  position: relative;
  z-index: 2;
  padding-block: clamp(36px, 5vw, 64px) clamp(48px, 7vw, 88px);
}

.docs__grid {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: start;
}

.docs-side {
  position: sticky;
  top: calc(var(--nav-h) + 18px);
  max-height: calc(100vh - var(--nav-h) - 36px);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  padding-bottom: 12px;
}

/* --------------------------------------------------- language switch -- */
.lang-switch {
  position: relative;
  margin-bottom: 18px;
}

.lang-switch__btn {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 10px 13px;
  border: 1px solid var(--stroke);
  border-radius: 12px;
  background: var(--panel);
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: border-color 0.18s ease, background 0.18s ease;
}

.lang-switch__btn::-webkit-details-marker {
  display: none;
}

.lang-switch__btn:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  background: var(--panel-hi);
}

.lang-switch__btn > svg:first-child {
  width: 17px;
  height: 17px;
  flex: none;
  color: var(--accent);
}

.lang-switch__name {
  flex: 1;
  text-align: left;
}

.lang-switch__chev {
  width: 15px;
  height: 15px;
  flex: none;
  color: var(--dim);
  transition: transform 0.22s ease;
}

.lang-switch[open] .lang-switch__chev {
  transform: rotate(180deg);
}

.lang-switch__menu {
  margin-top: 6px;
  max-height: 340px;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 1px;
  border: 1px solid var(--stroke);
  border-radius: 12px;
  background: rgba(10, 10, 12, 0.7);
}

.lang-switch__menu a {
  display: block;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--text-2);
  font-size: 0.92rem;
  border-left: 0;
  transition: color 0.15s ease, background 0.15s ease;
}

.lang-switch__menu a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.lang-switch__menu a.is-current {
  color: var(--accent);
  font-weight: 600;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.lang-switch--home {
  max-width: 240px;
  margin-left: auto;
  margin-bottom: 22px;
}

.docs-side__toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  padding: 13px 16px;
  border: 1px solid var(--stroke);
  border-radius: 12px;
  background: var(--panel);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.docs-side__toggle::-webkit-details-marker {
  display: none;
}

.docs-side__toggle svg {
  width: 16px;
  height: 16px;
  flex: none;
  transition: transform 0.25s ease;
}

.docs-side__wrap[open] .docs-side__toggle svg {
  transform: rotate(180deg);
}

.docs-toc__home {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 6px 10px 6px 0;
  margin-bottom: 4px;
}

.docs-toc__home:hover {
  color: #fff;
}

.docs-toc__group {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 20px 0 6px;
}

.docs-toc a:not(.docs-toc__home) {
  display: block;
  font-size: 0.92rem;
  color: var(--dim);
  padding: 5px 12px;
  border-left: 1px solid var(--stroke);
  border-radius: 0 8px 8px 0;
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.docs-toc a:not(.docs-toc__home):hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.docs-toc a.is-here {
  color: #fff;
  font-weight: 600;
  border-left: 2px solid var(--accent);
  padding-left: 11px;
  background: linear-gradient(90deg, rgba(255, 79, 193, 0.12), transparent 80%);
}

/* --------------------------------------------------------- reading column -- */
.docs-main {
  max-width: 800px;
  min-width: 0;
}

.eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.docs-main h1,
.h-lg {
  font-size: clamp(2rem, 4.5vw, 2.9rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 14px;
}

.docs-lede {
  font-size: 1.1rem;
  color: var(--text-2);
  max-width: 62ch;
  margin-bottom: 10px;
}

.docs-main h2 {
  font-size: 1.42rem;
  color: #fff;
  margin: 44px 0 14px;
  padding-top: 30px;
  border-top: 1px solid var(--stroke-2);
}

.docs-main h3 {
  font-size: 1.08rem;
  color: var(--text);
  margin: 28px 0 10px;
}

.docs-main h4 {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
  margin: 24px 0 8px;
}

.docs-main [id] {
  scroll-margin-top: 92px;
}

.docs-main p,
.docs-main li {
  color: var(--text-2);
  font-size: 1rem;
  line-height: 1.75;
}

.docs-main p {
  margin-bottom: 14px;
}

.docs-main ul,
.docs-main ol {
  margin: 0 0 18px;
  padding-left: 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.docs-main li::marker {
  color: var(--accent);
}

.docs-main strong {
  color: var(--text);
}

.docs-main a {
  color: var(--accent);
  border-bottom: 1px solid rgba(255, 79, 193, 0.35);
  transition: border-color 0.18s ease;
}

.docs-main a:hover {
  border-bottom-color: var(--accent);
}

.docs-main figure.shot {
  margin: 26px 0;
}

kbd {
  font-family: var(--mono);
  font-size: 0.78em;
  font-weight: 600;
  color: var(--text);
  background: var(--panel-hi);
  border: 1px solid var(--stroke);
  border-radius: 6px;
  padding: 2px 7px;
  white-space: nowrap;
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.35);
}

.docs-main code {
  font-family: var(--mono);
  font-size: 0.85em;
  color: #f9a8d4;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--stroke-2);
  border-radius: 6px;
  padding: 1px 6px;
}

/* -------------------------------------------------------------- callouts -- */
.callout {
  --tint: var(--accent);
  margin: 22px 0;
  padding: 15px 18px 13px;
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--tint) 30%, transparent);
  background: color-mix(in srgb, var(--tint) 8%, transparent);
}

.callout--tip {
  --tint: var(--lime);
}

.callout--warn {
  --tint: var(--amber);
}

.callout__label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--tint);
  margin-bottom: 6px;
}

.callout p {
  margin: 0;
  font-size: 0.96rem;
}

.callout p + p {
  margin-top: 8px;
}

/* ---------------------------------------------------------------- tables -- */
.tablewrap {
  overflow-x: auto;
  margin: 20px 0;
  border: 1px solid var(--stroke);
  border-radius: var(--radius-sm);
}

.docs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  min-width: 460px;
}

.docs-table th {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-align: left;
  color: var(--dim);
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--stroke);
}

.docs-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--stroke-2);
  color: var(--text-2);
  vertical-align: top;
  line-height: 1.55;
}

.docs-table tr:last-child td {
  border-bottom: 0;
}

.docs-table td:first-child {
  white-space: nowrap;
}

/* ------------------------------------------------------- on-page jump row -- */
.docs-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 6px;
}

.docs-jump a {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-2);
  padding: 5px 10px;
  border-radius: 7px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.025);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.docs-jump a:hover {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
}

/* --------------------------------------------------------- prev/next pager */
.docs-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: clamp(48px, 7vw, 72px);
}

.docs-pager a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.docs-pager a:hover {
  border-color: rgba(255, 79, 193, 0.45);
  transform: translateY(-2px);
}

.docs-pager__dir {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
}

.docs-pager__title {
  font-weight: 700;
  color: var(--text);
  font-size: 0.98rem;
}

.docs-pager--next {
  grid-column: 2;
  text-align: right;
  align-items: flex-end;
}

.docs-pager--prev {
  grid-column: 1;
}

/* -------------------------------------------- screenshot / video frames -- */
.shot {
  position: relative;
  display: block;
  border-radius: 16px;
  overflow: hidden;
  min-height: 200px;
  border: 1px solid color-mix(in srgb, var(--tint, var(--accent)) 22%, var(--stroke));
  background: linear-gradient(160deg, rgba(28, 22, 32, 0.7), rgba(10, 10, 12, 0.85));
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.5),
    0 0 60px color-mix(in srgb, var(--tint, var(--accent)) 10%, transparent);
}

.shot::after {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  z-index: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
}

.shot img,
.shot video,
.shot__media {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  background: transparent;
}

/* -------------------------------------------------------------- docs home -- */
.section {
  position: relative;
  z-index: 2;
  padding-block: clamp(48px, 7vw, 80px) clamp(56px, 8vw, 96px);
}

.section-head {
  max-width: 640px;
  margin-bottom: clamp(32px, 5vw, 48px);
}

.section-head p {
  color: var(--text-2);
  font-size: 1.08rem;
  max-width: 58ch;
}

.doc-quick {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: clamp(36px, 5vw, 56px);
}

.mini.panel {
  padding: 22px 22px 20px;
  border-radius: 16px;
  border: 1px solid var(--stroke);
  background: var(--panel);
}

.mini__icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  margin-bottom: 14px;
  color: var(--tint, var(--accent));
  background: color-mix(in srgb, var(--tint, var(--accent)) 14%, transparent);
}

.mini__icon svg {
  width: 18px;
  height: 18px;
}

.mini h4 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.mini h4 a {
  color: var(--text);
}

.mini h4 a:hover {
  color: var(--accent);
}

.mini p {
  color: var(--text-2);
  font-size: 0.92rem;
}

.doc-groups {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.doc-group {
  padding: 22px 22px 18px;
  border-radius: 16px;
  border: 1px solid var(--stroke);
  background: var(--panel);
}

.doc-group h3 {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--tint, var(--accent));
  margin-bottom: 12px;
}

.doc-group a {
  display: block;
  color: var(--text-2);
  font-size: 0.95rem;
  padding: 5px 0;
  transition: color 0.18s ease, transform 0.18s ease;
}

.doc-group a:hover {
  color: var(--accent);
  transform: translateX(2px);
}

/* ------------------------------------------------------------ brush grid -- */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 18px;
}

.chip {
  font-size: 0.88rem;
  color: var(--text-2);
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.03);
}

/* ------------------------------------------------------------ responsive -- */
@media (max-width: 940px) {
  .docs__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .docs-side {
    position: static;
    max-height: none;
    overflow: visible;
    padding-bottom: 0;
  }

  .docs-side__toggle {
    display: flex;
  }

  .docs-side__wrap[open] .docs-toc {
    margin-top: 8px;
    padding: 10px 14px 14px;
    border: 1px solid var(--stroke-2);
    border-radius: 12px;
    background: rgba(10, 10, 12, 0.55);
  }

  .doc-quick,
  .doc-groups {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .wrap {
    width: min(var(--maxw), calc(100% - 28px));
  }

  .doc-quick,
  .doc-groups {
    grid-template-columns: 1fr;
  }

  .docs-pager {
    grid-template-columns: 1fr;
  }

  .docs-pager--next,
  .docs-pager--prev {
    grid-column: auto;
    text-align: left;
    align-items: flex-start;
  }

  .footer__cols {
    grid-template-columns: 1fr;
  }
}

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