/* ==========================================================================
   Dorado — project-dorado.github.io
   The Zune 4.8 / Zune HD "Metro" canon, applied to the web.
   Content before chrome. Zero corner radius. Opacity carries state.
   ========================================================================== */

:root {
  /* Surfaces */
  --bg: #0d0d0f;
  --surface: #141416;
  --surface-elevated: #18181b;
  --tile: #1b1b1e;
  --tile-hover: #232327;
  --border: #2a2a2e;
  --border-subtle: #222226;

  /* Text (white only, opacity = state) */
  --text: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.62);
  --text-tertiary: rgba(255, 255, 255, 0.4);
  --text-faint: rgba(255, 255, 255, 0.24);

  /* Signature loop gradient */
  --pink: #e91e63;
  --orange: #ff5722;
  --amber: #ffc107;
  --grad: linear-gradient(135deg, #e91e63 0%, #ff5722 50%, #ffc107 100%);
  --grad-soft: linear-gradient(135deg, rgba(233, 30, 99, 0.16), rgba(255, 87, 34, 0.14), rgba(255, 193, 7, 0.1));

  /* Per-project accents */
  --accent-dorado: #fa2a55;
  --accent-hd: #1ba1e2;
  --accent-emu: #f09609;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 320ms;
  --dur-fast: 180ms;

  /* Type */
  --font-sans: "Segoe UI", Selawik, Inter, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;

  /* Layout */
  --wrap: 1120px;
  --gutter: clamp(20px, 5vw, 48px);
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.6;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

/* --------------------------------------------------------------------------
   Accessibility helpers
   -------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 100;
  padding: 10px 18px;
  background: var(--text);
  color: var(--bg);
  font-weight: 600;
  transition: top var(--dur-fast) var(--ease-out);
}

.skip-link:focus {
  top: 12px;
}

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

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

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(64px, 9vw, 112px);
  border-top: 1px solid var(--border-subtle);
}

.section:first-of-type {
  border-top: 0;
}

.eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin: 0 0 20px;
}

.section__title {
  margin: 0 0 16px;
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  font-weight: 200;
  line-height: 1.08;
  letter-spacing: -0.01em;
}

.section__lead {
  margin: 0 0 48px;
  max-width: 62ch;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  color: var(--text-secondary);
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* --------------------------------------------------------------------------
   Header / pivot nav
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 13, 15, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.brand img {
  width: 28px;
  height: 28px;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 34px);
}

.nav__link {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: lowercase;
  color: var(--text-secondary);
  padding-block: 6px;
  border-bottom: 2px solid transparent;
  transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--text);
}

.nav__link[aria-current="page"],
.nav__link.is-active {
  color: var(--text);
  border-bottom-color: var(--pink);
}

.nav__toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  position: relative;
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}

.nav__toggle span::before,
.nav__toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav__toggle span::before {
  top: -6px;
}

.nav__toggle span::after {
  top: 6px;
}

.nav__toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav__toggle[aria-expanded="true"] span::before {
  transform: translateY(6px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] span::after {
  transform: translateY(-6px) rotate(-45deg);
}

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

.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(80px, 13vw, 160px) clamp(72px, 11vw, 140px);
}

.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 90%;
  background:
    radial-gradient(60% 60% at 20% 30%, rgba(233, 30, 99, 0.22), transparent 70%),
    radial-gradient(50% 50% at 75% 20%, rgba(255, 87, 34, 0.16), transparent 70%),
    radial-gradient(45% 45% at 55% 60%, rgba(255, 193, 7, 0.1), transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  display: grid;
  gap: clamp(40px, 6vw, 72px);
  align-items: center;
}

.hero__mark {
  width: clamp(96px, 14vw, 168px);
  height: auto;
}

.hero__title {
  margin: 0 0 20px;
  font-size: clamp(2.8rem, 9vw, 6rem);
  font-weight: 200;
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.hero__subtitle {
  margin: 0 0 36px;
  max-width: 56ch;
  font-size: clamp(1.05rem, 2.2vw, 1.4rem);
  font-weight: 300;
  color: var(--text-secondary);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid var(--border);
  color: var(--text);
  background: transparent;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.btn:hover,
.btn:focus-visible {
  background: var(--tile-hover);
  border-color: var(--text-tertiary);
}

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

.btn--primary {
  border-color: transparent;
  background: var(--grad);
  color: #0d0d0f;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--grad);
  filter: brightness(1.06);
}

.btn--ghost {
  border-color: transparent;
  padding-inline: 0;
  color: var(--text-secondary);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: transparent;
  color: var(--text);
}

.btn__arrow {
  transition: transform var(--dur-fast) var(--ease-out);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   Cards / grids
   -------------------------------------------------------------------------- */

.grid {
  display: grid;
  gap: 20px;
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

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

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px 30px 30px;
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  transition: background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}

.card::after {
  content: "";
  position: absolute;
  inset: 0 auto calc(100% - 3px) 0;
  width: 100%;
  height: 3px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease-out);
}

.card:hover,
.card:focus-within {
  background: var(--surface-elevated);
  border-color: var(--border);
  transform: translateY(-3px);
}

.card:hover::after,
.card:focus-within::after {
  transform: scaleX(1);
}

.card--dorado::after { background: var(--accent-dorado); }
.card--hd::after { background: var(--accent-hd); }
.card--emu::after { background: var(--accent-emu); }

.card__icon {
  width: 56px;
  height: 56px;
  margin-bottom: 22px;
}

.card__title {
  margin: 0 0 4px;
  font-size: 1.4rem;
  font-weight: 400;
}

.card__meta {
  margin: 0 0 16px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.card__body {
  margin: 0 0 26px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.card__link {
  margin-top: auto;
  align-self: flex-start;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  border-bottom: 1px solid var(--text-faint);
  padding-bottom: 3px;
  transition: border-color var(--dur-fast) var(--ease-out);
}

.card__link:hover,
.card__link:focus-visible {
  border-bottom-color: var(--pink);
}

/* --------------------------------------------------------------------------
   Stats / parity
   -------------------------------------------------------------------------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
}

.stat {
  padding: 30px 24px;
  background: var(--bg);
}

.stat__value {
  display: block;
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 200;
  line-height: 1;
  margin-bottom: 10px;
}

.stat__label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

/* --------------------------------------------------------------------------
   Feature list
   -------------------------------------------------------------------------- */

.features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
}

.feature {
  background: var(--bg);
  padding: 26px 28px;
}

.feature h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.feature p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Prose (project / about pages)
   -------------------------------------------------------------------------- */

.prose {
  max-width: 74ch;
}

.prose h2 {
  margin: 56px 0 16px;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 300;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose h3 {
  margin: 34px 0 10px;
  font-size: 1.1rem;
  font-weight: 500;
}

.prose p {
  color: var(--text-secondary);
  margin: 0 0 18px;
}

.prose ul {
  margin: 0 0 22px;
  padding-left: 1.15rem;
  color: var(--text-secondary);
}

.prose li {
  margin-bottom: 9px;
}

.prose li::marker {
  color: var(--pink);
}

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

.prose a {
  color: var(--text);
  border-bottom: 1px solid var(--text-faint);
  transition: border-color var(--dur-fast) var(--ease-out);
}

.prose a:hover {
  border-bottom-color: var(--pink);
}

.prose code {
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: var(--tile);
  border: 1px solid var(--border-subtle);
  padding: 2px 6px;
}

pre {
  margin: 0 0 22px;
  padding: 20px 22px;
  overflow-x: auto;
  background: #08080a;
  border: 1px solid var(--border-subtle);
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.7;
  color: #e6e6e6;
}

pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: inherit;
  color: inherit;
}

/* Page masthead for inner pages */
.page-hero {
  padding-block: clamp(56px, 9vw, 104px) clamp(40px, 6vw, 64px);
  border-bottom: 1px solid var(--border-subtle);
}

.page-hero__mark {
  width: 72px;
  height: 72px;
  margin-bottom: 28px;
}

.page-hero__title {
  margin: 0 0 18px;
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  font-weight: 200;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.page-hero__lead {
  margin: 0 0 28px;
  max-width: 60ch;
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
}

/* Badge row */
.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 4px;
}

.badge {
  display: inline-block;
  padding: 6px 12px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: var(--tile);
  border: 1px solid var(--border-subtle);
}

.badge--pink { color: var(--pink); border-color: rgba(233, 30, 99, 0.4); }
.badge--hd { color: var(--accent-hd); border-color: rgba(27, 161, 226, 0.4); }
.badge--emu { color: var(--accent-emu); border-color: rgba(240, 150, 9, 0.4); }

/* Table */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  margin-bottom: 22px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  text-align: left;
  padding: 13px 18px;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: top;
}

th {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  background: var(--surface);
}

tbody tr:last-child td {
  border-bottom: 0;
}

td {
  color: var(--text-secondary);
}

td:first-child {
  color: var(--text);
  font-weight: 500;
}

/* Callout */
.note {
  margin: 0 0 24px;
  padding: 18px 22px;
  border-left: 3px solid var(--amber);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* --------------------------------------------------------------------------
   CTA band
   -------------------------------------------------------------------------- */

.cta-band {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding-block: clamp(56px, 9vw, 96px);
  border-top: 1px solid var(--border-subtle);
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-soft);
  opacity: 0.7;
  pointer-events: none;
}

.cta-band__inner {
  position: relative;
}

.cta-band h2 {
  margin: 0 0 14px;
  font-size: clamp(1.8rem, 4.5vw, 2.8rem);
  font-weight: 200;
}

.cta-band p {
  margin: 0 auto 32px;
  max-width: 52ch;
  color: var(--text-secondary);
}

.cta-band .hero__cta {
  justify-content: center;
}

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

.site-footer {
  padding-block: 56px 44px;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-tertiary);
  font-size: 0.85rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.footer__brand img {
  width: 26px;
  height: 26px;
}

.footer__about {
  max-width: 42ch;
  color: var(--text-tertiary);
}

.footer h4 {
  margin: 0 0 16px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer li {
  margin-bottom: 10px;
}

.footer a {
  color: var(--text-tertiary);
  transition: color var(--dur-fast) var(--ease-out);
}

.footer a:hover,
.footer a:focus-visible {
  color: var(--text);
}

.footer__legal {
  padding-top: 28px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-faint);
}

/* --------------------------------------------------------------------------
   404
   -------------------------------------------------------------------------- */

.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
}

.error-page__code {
  font-size: clamp(4rem, 16vw, 10rem);
  font-weight: 200;
  line-height: 1;
  margin: 0 0 12px;
}

/* --------------------------------------------------------------------------
   Reveal on scroll
   -------------------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 900px) {
  .grid--3,
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer__brand-col {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .nav__toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    inset: 64px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px var(--gutter) 24px;
    background: var(--bg);
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-120%);
    transition: transform var(--dur) var(--ease-out);
  }

  .nav.is-open {
    transform: translateY(0);
  }

  .nav__link {
    padding: 16px 0;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.95rem;
  }

  .nav__link[aria-current="page"],
  .nav__link.is-active {
    border-bottom-color: var(--border-subtle);
  }

  .grid--3,
  .grid--2,
  .stats,
  .features,
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}