/* ==========================================================================
   AuroraOSP — page styles (layered on m3.css)
   ========================================================================== */

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding: clamp(4rem, 10vw, 8rem) 0 clamp(4rem, 8vw, 6rem);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -30% -20% auto -20%;
  height: 130%;
  background:
    radial-gradient(48% 42% at 18% 8%, color-mix(in oklab, var(--aurora-1) 32%, transparent), transparent 68%),
    radial-gradient(42% 38% at 78% 4%, color-mix(in oklab, var(--aurora-3) 28%, transparent), transparent 66%),
    radial-gradient(55% 45% at 50% 34%, color-mix(in oklab, var(--aurora-2) 20%, transparent), transparent 70%);
  filter: blur(20px);
  opacity: .75;
  pointer-events: none;
  animation: aurora-drift 22s var(--ease-effects) infinite alternate;
}
@keyframes aurora-drift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  50%  { transform: translate3d(2%, 2.5%, 0) scale(1.06); }
  100% { transform: translate3d(-2%, 1%, 0) scale(1.02); }
}

.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
@media (max-width: 940px) { .hero__grid { grid-template-columns: 1fr; } }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .4rem .4rem .4rem .875rem;
  border-radius: var(--shape-full);
  background: var(--md-surface-container);
  border: 1px solid var(--md-outline-variant);
  font-size: .8125rem;
  font-weight: 600;
  color: var(--md-on-surface-variant);
  margin-bottom: 1.75rem;
}
.hero__badge b {
  padding: .2rem .625rem;
  border-radius: var(--shape-full);
  background: var(--md-primary);
  color: var(--md-on-primary);
  font-size: .75rem;
  letter-spacing: .02em;
}

.hero h1 { margin-bottom: 1.5rem; }
.hero h1 .grad {
  background: linear-gradient(105deg, var(--aurora-1), var(--aurora-2) 42%, var(--aurora-3) 78%, var(--aurora-4));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lede {
  max-width: 54ch;
  color: var(--md-on-surface-variant);
  margin-bottom: 2.25rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: .875rem; align-items: center; }

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-top: 3.5rem;
  padding-top: 2.25rem;
  border-top: 1px solid var(--md-outline-variant);
}
.hero__stats div strong {
  display: block;
  font-family: var(--font-brand);
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--md-on-surface);
  line-height: 1.1;
}
.hero__stats div span { font-size: .8125rem; color: var(--md-on-surface-variant); }

/* --------------------------------------------------------------------------
   Phone mock
   -------------------------------------------------------------------------- */
.phone {
  position: relative;
  width: min(300px, 78%);
  margin-inline: auto;
  aspect-ratio: 900 / 2008;   /* the preview screenshot's own ratio */
  border-radius: 44px;
  padding: 10px;
  background: linear-gradient(160deg, color-mix(in oklab, var(--md-outline) 60%, var(--md-surface-container-highest)), var(--md-surface-container-lowest));
  box-shadow: var(--md-shadow-3), 0 40px 90px -30px color-mix(in oklab, var(--aurora-1) 55%, transparent);
  animation: float 7s var(--ease-effects) infinite alternate;
}
@keyframes float { from { transform: translateY(-8px); } to { transform: translateY(8px); } }

.phone__screen {
  position: relative;
  height: 100%;
  border-radius: 36px;
  overflow: hidden;
  background: #0a1a22;
}
.phone__screen img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Pulse visualiser, overlaid where Aurora actually draws it: the foot of the
   lock screen. Sits on a short scrim so the bars stay legible over wallpaper. */
.phone__pulse {
  position: absolute;
  /* inset to the media pill's own width: any wider and the bars collide with
     the flashlight and camera affordances sitting in the bottom corners */
  left: 23%;
  right: 23%;
  bottom: 3.5%;
  height: 4.5%;
  display: flex;
  align-items: flex-end;
  gap: 2px;
  filter: drop-shadow(0 1px 2px rgb(0 0 0 / .55));
}
.phone__pulse span {
  flex: 1;
  height: 30%;
  border-radius: 3px;
  background: linear-gradient(180deg, #d8f7ff, var(--aurora-1) 45%, var(--aurora-3));
  /* backwards fill: without it a bar has no height during its animation-delay
     and simply is not drawn, so most of the visualiser is missing on load */
  animation: pulse-bar 1.1s var(--ease-effects) infinite alternate backwards;
}
@keyframes pulse-bar { from { height: 22%; opacity: .75; } to { height: 100%; opacity: 1; } }

/* --------------------------------------------------------------------------
   Feature grids
   -------------------------------------------------------------------------- */
.grid { display: grid; gap: 1.25rem; }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }

.feature__icon {
  display: grid;
  place-items: center;
  width: 52px; height: 52px;
  border-radius: var(--shape-lg);
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  margin-bottom: 1.25rem;
  transition: border-radius var(--dur-medium) var(--ease-spatial-fast),
              transform var(--dur-medium) var(--ease-spatial-fast);
}
.card--interactive:hover .feature__icon { border-radius: var(--shape-full); transform: rotate(-6deg) scale(1.06); }
.feature__icon svg { width: 26px; height: 26px; }
.feature__icon--t { background: var(--md-tertiary-container); color: var(--md-on-tertiary-container); }
.feature__icon--s { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }

.card h3 { margin-bottom: .625rem; }
.card p { color: var(--md-on-surface-variant); }
.card__meta { margin-top: 1.25rem; }

/* Bento — a couple of emphasised cells */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1.25rem; }
.bento > * { grid-column: span 2; }
.bento > .span-3 { grid-column: span 3; }
.bento > .span-4 { grid-column: span 4; }
.bento > .span-6 { grid-column: span 6; }
@media (max-width: 1000px) {
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento > *, .bento > .span-3, .bento > .span-4, .bento > .span-6 { grid-column: span 2; }
}

.card--hero {
  background:
    radial-gradient(90% 120% at 100% 0%, color-mix(in oklab, var(--aurora-3) 24%, transparent), transparent 62%),
    var(--md-surface-container);
  border-color: transparent;
  padding: 2.25rem;
}

/* --------------------------------------------------------------------------
   Feature page: category sections + spec list
   -------------------------------------------------------------------------- */
.cat { scroll-margin-top: 100px; }
.cat + .cat { margin-top: clamp(3.5rem, 7vw, 6rem); }
.cat__head { display: flex; align-items: center; gap: 1rem; margin-bottom: 2rem; }
.cat__head .feature__icon { margin-bottom: 0; }

.speclist { list-style: none; display: grid; gap: .875rem; }
.speclist li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .875rem;
  align-items: start;
  padding: 1rem 1.125rem;
  border-radius: var(--shape-lg);
  background: var(--md-surface-container-low);
  border: 1px solid var(--md-outline-variant);
  transition: border-radius var(--dur-medium) var(--ease-spatial),
              background-color var(--dur-short) var(--ease-standard);
}
.speclist li:hover { border-radius: var(--shape-xl); background: var(--md-surface-container); }
.speclist .tick {
  width: 22px; height: 22px;
  margin-top: .1rem;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  flex: none;
}
.speclist .tick svg { width: 14px; height: 14px; }
.speclist b { display: block; font-weight: 650; }
.speclist span { color: var(--md-on-surface-variant); font-size: .9375rem; }

/* Sticky in-page nav for the features page */
.subnav {
  position: sticky;
  top: 72px;
  z-index: 30;
  padding: .875rem 0;
  background: color-mix(in oklab, var(--md-surface) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--md-outline-variant);
  margin-bottom: 3rem;
}
.subnav__scroll { display: flex; gap: .5rem; overflow-x: auto; scrollbar-width: none; }
.subnav__scroll::-webkit-scrollbar { display: none; }
.subnav a {
  padding: .5rem 1rem;
  border-radius: var(--shape-full);
  background: var(--md-surface-container);
  color: var(--md-on-surface-variant);
  font-size: .875rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--dur-short) var(--ease-standard);
}
.subnav a:hover, .subnav a.is-active {
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
}

/* --------------------------------------------------------------------------
   Downloads
   -------------------------------------------------------------------------- */
.dl-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}
.search {
  position: relative;
  flex: 1 1 260px;
  max-width: 380px;
}
.search svg {
  position: absolute; left: 1rem; top: 50%;
  transform: translateY(-50%);
  width: 20px; height: 20px;
  color: var(--md-on-surface-variant);
  pointer-events: none;
}
.search input {
  width: 100%;
  min-height: 3rem;
  padding: 0 1rem 0 3rem;
  border-radius: var(--shape-full);
  border: 1px solid var(--md-outline-variant);
  background: var(--md-surface-container-low);
  color: var(--md-on-surface);
  font-family: inherit;
  font-size: .9375rem;
  transition: border-color var(--dur-short) var(--ease-standard),
              border-radius var(--dur-medium) var(--ease-spatial-fast);
}
.search input::placeholder { color: var(--md-on-surface-variant); }
.search input:focus {
  outline: none;
  border-color: var(--md-primary);
  border-radius: var(--shape-lg);
}

.device-card { display: flex; flex-direction: column; }
.device-card__top { display: flex; align-items: flex-start; gap: 1rem; }
.device-card__glyph {
  width: 46px; height: 62px;
  flex: none;
  border-radius: 10px;
  border: 2px solid var(--md-outline-variant);
  background: linear-gradient(165deg, color-mix(in oklab, var(--aurora-1) 26%, transparent), transparent 65%);
  position: relative;
}
.device-card__glyph::after {
  content: ""; position: absolute;
  top: 6px; left: 50%; transform: translateX(-50%);
  width: 14px; height: 3px; border-radius: 2px;
  background: var(--md-outline-variant);
}
.device-card h3 { margin-bottom: .2rem; }
.device-card .codename { font-family: var(--font-mono); font-size: .8125rem; color: var(--md-on-surface-variant); }
.device-card__rows { margin: 1.5rem 0; display: grid; gap: .625rem; }
.device-card__rows div { display: flex; justify-content: space-between; gap: 1rem; font-size: .875rem; }
.device-card__rows dt { color: var(--md-on-surface-variant); }
.device-card__rows dd { margin: 0; font-weight: 600; text-align: right; }
.device-card__actions { margin-top: auto; display: flex; gap: .625rem; flex-wrap: wrap; }
.device-card__actions .btn { flex: 1 1 auto; }

.dl-empty {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--md-on-surface-variant);
  border: 1px dashed var(--md-outline-variant);
  border-radius: var(--shape-xl);
}

/* Install steps */
.steps { list-style: none; counter-reset: step; display: grid; gap: 1rem; }
.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.125rem;
  align-items: start;
  padding: 1.375rem 1.5rem;
  border-radius: var(--shape-lg-inc);
  background: var(--md-surface-container-low);
  border: 1px solid var(--md-outline-variant);
}
.steps li::before {
  content: counter(step);
  display: grid; place-items: center;
  width: 34px; height: 34px;
  border-radius: var(--shape-md);
  background: var(--md-primary);
  color: var(--md-on-primary);
  font-family: var(--font-brand);
  font-weight: 700;
  font-size: .9375rem;
}
.steps b { display: block; margin-bottom: .25rem; }
.steps p { color: var(--md-on-surface-variant); font-size: .9375rem; }
.steps code {
  font-family: var(--font-mono);
  font-size: .8125rem;
  padding: .15rem .45rem;
  border-radius: var(--shape-xs);
  background: var(--md-surface-container-highest);
}

.notice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.375rem 1.5rem;
  border-radius: var(--shape-lg-inc);
  background: var(--md-error-container);
  color: var(--md-on-error-container);
}
.notice svg { width: 24px; height: 24px; flex: none; }
.notice b { display: block; margin-bottom: .25rem; }
.notice p { font-size: .9375rem; opacity: .92; }

/* --------------------------------------------------------------------------
   About
   -------------------------------------------------------------------------- */
.prose { max-width: 68ch; }
.prose p + p { margin-top: 1.125rem; }
.prose p { color: var(--md-on-surface-variant); }

.timeline { list-style: none; position: relative; padding-left: 2rem; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: .6rem; bottom: .6rem;
  width: 2px; background: var(--md-outline-variant);
}
.timeline li { position: relative; padding-bottom: 2rem; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: -2rem; top: .45rem;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--md-surface);
  border: 3px solid var(--md-primary);
}
.timeline time { font-family: var(--font-mono); font-size: .75rem; color: var(--md-primary); font-weight: 600; }
.timeline b { display: block; margin: .2rem 0 .3rem; }
.timeline p { color: var(--md-on-surface-variant); font-size: .9375rem; }

.person {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.person__avatar {
  width: 52px; height: 52px;
  flex: none;
  border-radius: var(--shape-lg);
  display: grid; place-items: center;
  font-family: var(--font-brand);
  font-weight: 700;
  font-size: 1.125rem;
  background: var(--md-tertiary-container);
  color: var(--md-on-tertiary-container);
  transition: border-radius var(--dur-medium) var(--ease-spatial-fast);
}
.card--interactive:hover .person__avatar { border-radius: var(--shape-full); }
.person b { display: block; }
.person span { font-size: .875rem; color: var(--md-on-surface-variant); }

/* --------------------------------------------------------------------------
   CTA band
   -------------------------------------------------------------------------- */
.cta {
  position: relative;
  overflow: hidden;
  border-radius: var(--shape-xxl);
  padding: clamp(3rem, 7vw, 5rem) clamp(1.5rem, 5vw, 4rem);
  text-align: center;
  background:
    radial-gradient(80% 120% at 20% 0%, color-mix(in oklab, var(--aurora-1) 30%, transparent), transparent 60%),
    radial-gradient(70% 110% at 85% 100%, color-mix(in oklab, var(--aurora-4) 28%, transparent), transparent 60%),
    var(--md-surface-container);
}
.cta h2 { margin-bottom: 1rem; }
.cta p { max-width: 52ch; margin-inline: auto; color: var(--md-on-surface-variant); margin-bottom: 2.25rem; }
.cta .hero__actions { justify-content: center; }

/* --------------------------------------------------------------------------
   FAQ
   -------------------------------------------------------------------------- */
.faq { display: grid; gap: .875rem; }
.faq details {
  border-radius: var(--shape-lg-inc);
  background: var(--md-surface-container-low);
  border: 1px solid var(--md-outline-variant);
  overflow: hidden;
  transition: border-radius var(--dur-medium) var(--ease-spatial);
}
.faq details[open] { border-radius: var(--shape-xl); background: var(--md-surface-container); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 1.25rem 1.5rem;
  font-weight: 650;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  width: 10px; height: 10px;
  border-right: 2px solid var(--md-on-surface-variant);
  border-bottom: 2px solid var(--md-on-surface-variant);
  transform: rotate(45deg) translateY(-2px);
  flex: none;
  transition: transform var(--dur-medium) var(--ease-spatial);
}
.faq details[open] summary::after { transform: rotate(-135deg) translateY(-2px); }
.faq .faq__body { padding: 0 1.5rem 1.375rem; color: var(--md-on-surface-variant); font-size: .9375rem; }

/* Devices strip on the homepage collapses on narrow viewports */
@media (max-width: 780px) {
  .strip { grid-template-columns: 1fr !important; }
  .strip .btn { justify-self: start; }
}

/* A build that is announced but not yet published */
.btn.is-pending {
  color: var(--md-on-surface-variant);
  box-shadow: inset 0 0 0 1px var(--md-outline-variant);
  cursor: not-allowed;
}
.btn.is-pending:hover { box-shadow: inset 0 0 0 1px var(--md-outline-variant); border-radius: var(--shape-full); }
.btn.is-pending:active { transform: none; border-radius: var(--shape-full); }

/* Inline links inside prose and cards */
.card p a, .prose a, .faq__body a {
  color: var(--md-primary);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.card p a:hover, .prose a:hover, .faq__body a:hover { text-decoration-thickness: 2px; }

/* Fastboot / recovery package — a secondary download under the OTA variants */
.fastboot-row {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-top: .75rem;
  padding: .7rem .9rem;
  border-radius: var(--shape-md);
  border: 1px dashed var(--md-outline-variant);
  color: var(--md-on-surface-variant);
  text-decoration: none;
  transition: border-color var(--dur-short) var(--ease-standard),
              background-color var(--dur-short) var(--ease-standard),
              border-radius var(--dur-medium) var(--ease-spatial);
}
.fastboot-row:hover {
  border-style: solid;
  border-color: color-mix(in oklab, var(--md-primary) 55%, var(--md-outline-variant));
  background: color-mix(in oklab, var(--md-primary) 7%, transparent);
  border-radius: var(--shape-lg);
  color: var(--md-on-surface);
}
.fastboot-row svg { width: 20px; height: 20px; flex: none; color: var(--md-primary); }
.fastboot-row span { display: grid; min-width: 0; }
.fastboot-row b { font-size: .8125rem; font-weight: 650; }
.fastboot-row em { font-style: normal; font-size: .75rem; opacity: .8; }