/* The sections of the home page, top to bottom. */

/* ---------- Shared pieces ---------- */

.section-head {
  display: grid;
  gap: 1.25rem;
  margin-bottom: var(--space-block);
}

.section-head h2 {
  max-width: 18ch;
}

.section-head--split h2 {
  max-width: none;
}

.section-head__text {
  max-width: 38rem;
  font-size: var(--text-lede);
  color: var(--text-soft);
}

.section-head--split {
  max-width: none;
}

@media (min-width: 900px) {
  .section-head--split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: 3rem;
  }
}

/* A screenshot, framed like a window on a dark desk. */
.shot {
  margin: 0;
}

.shot img {
  width: 100%;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-window);
  background: var(--panel);
  box-shadow: var(--shadow-window);
}

.ticks {
  display: grid;
  gap: 0.7rem;
  margin-top: 1.6rem;
  font-size: var(--text-small);
  color: var(--text-soft);
}

/* List markers are keyframe diamonds. */
.ticks li {
  position: relative;
  padding-left: 1.5rem;
}

.ticks li::before {
  content: "";
  position: absolute;
  left: 0.1rem;
  top: 0.5em;
  width: 0.5rem;
  height: 0.5rem;
  border: 1.5px solid var(--accent);
  transform: rotate(45deg);
}

.text-link {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.25em;
  text-decoration-thickness: 1px;
}

.text-link:hover {
  color: var(--accent-hover);
}

/* Sections rise into place as they are scrolled to (js/main.js adds .is-visible). */
.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

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

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

.hero {
  position: relative;
  padding-top: calc(var(--header-height) + clamp(2.5rem, 1.5rem + 4vw, 5rem));
  overflow: hidden;
}

.hero__copy {
  position: relative;
  display: grid;
  gap: clamp(1.75rem, 3vw, 3rem);
}

.hero h1 {
  font-size: var(--text-hero);
  line-height: 0.92;
  letter-spacing: -0.02em;
}

.hero__lede {
  max-width: 36rem;
  font-size: var(--text-lede);
  color: var(--text-soft);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.hero__facts {
  margin-top: 1.5rem;
  font-size: var(--text-small);
  color: var(--text-muted);
}

@media (min-width: 1000px) {
  .hero__copy {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .hero__intro {
    padding-bottom: 0.9rem;
  }
}

.hero__stage {
  position: relative;
  width: min(100% - 2 * var(--gutter), var(--page-width));
  margin: clamp(2.5rem, 1.5rem + 3.5vw, 4.25rem) auto 0;
  perspective: 2400px;
}

/* The window leans back a little and straightens as the page scrolls. */
.hero__window {
  --tilt: 1;
  transform-origin: 50% 0;
  transform: rotateX(calc(var(--tilt) * 7deg)) scale(calc(1 - var(--tilt) * 0.02));
  will-change: transform;
}

.hero__window img {
  width: 100%;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-window);
  box-shadow: 0 60px 120px -30px rgb(0 0 0 / 0.9);
}

/* Entrance: the copy rises in two beats, then the window. */
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
}

.hero__headline,
.hero__intro,
.hero__stage {
  animation: rise 900ms var(--ease-out) both;
}

.hero__intro {
  animation-delay: 120ms;
}

.hero__stage {
  animation-delay: 240ms;
}

/* ---------- Features ---------- */

.features {
  padding-top: var(--space-section);
}

.feature {
  display: grid;
  grid-template-columns: minmax(var(--gutter), 1fr) repeat(12, minmax(0, calc(var(--page-width) / 12))) minmax(var(--gutter), 1fr);
  align-items: center;
  row-gap: 2.25rem;
}

.feature + .feature {
  margin-top: var(--space-section);
}

.feature > * {
  grid-column: 2 / -2;
}

.feature__head {
  display: grid;
  gap: 1rem;
}

.feature__text > p,
.feature__body > p {
  margin-top: 1.25rem;
  max-width: 34rem;
}

.feature__body > p {
  margin-top: 0;
}

/* On narrow screens the words come before the picture. */
.feature--shot-left .feature__text {
  order: -1;
}

@media (min-width: 900px) {
  .feature__head {
    display: grid;
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 3rem;
    align-items: start;
  }



  .feature--shot-right .feature__text {
    grid-column: 2 / span 4;
    padding-right: 3rem;
  }

  .feature--shot-right .shot {
    grid-column: 6 / -2;
  }

  .feature--shot-left .shot {
    grid-column: 2 / 9;
    grid-row: 1;
  }

  .feature--shot-left .feature__text {
    grid-column: 10 / -2;
    grid-row: 1;
  }
}

/* Two pictures side by side: the whole window and one library panel. */
.pair {
  display: grid;
  gap: 1.5rem;
}

.pair__detail {
  width: min(100%, 26rem);
}

@media (min-width: 900px) {
  /* Column widths in the ratio of the pictures' shapes, so both are the same height. */
  .pair {
    grid-template-columns: 1.778fr 0.864fr;
    align-items: start;
  }

  .pair__detail {
    width: auto;
  }
}

/* ---------- Workflow ---------- */

.workflow {
  margin-top: var(--space-section);
  padding-block: var(--space-section);
  background: var(--window);
  border-block: 1px solid var(--border);
}

/* The steps are clips on a timeline; the playhead crosses them as you scroll. */
.flow {
  --lane: 3.25rem;
  --tracks: 3.5rem;
  position: relative;
}

.flow__tracks,
.flow__playhead {
  display: none;
}

.flow__steps {
  display: grid;
  gap: 1.5rem;
}

.flow__step {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr);
  gap: 1.25rem;
  align-items: center;
}

.flow__step p {
  font-size: var(--text-small);
  color: var(--text-muted);
  transition: color var(--duration) ease;
}

.clip {
  display: flex;
  align-items: center;
  height: var(--lane);
  padding: 0 0.85rem;
  border: 1px solid var(--clip-edge);
  border-radius: 5px;
  background: var(--clip);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1;
  white-space: nowrap;
  transition: filter var(--duration) ease, box-shadow var(--duration) ease, transform var(--duration) var(--ease-out);
}

.clip--video {
  --clip: var(--clip-video);
  --clip-edge: var(--clip-video-edge);
}

.clip--effect {
  --clip: var(--clip-effect);
  --clip-edge: var(--clip-effect-edge);
}

.clip--text {
  --clip: var(--clip-text);
  --clip-edge: var(--clip-text-edge);
}

.clip--audio {
  --clip: var(--clip-audio);
  --clip-edge: var(--clip-audio-edge);
  /* a waveform along the clip's lower half */
  background-image: repeating-linear-gradient(90deg, rgb(255 255 255 / 0.22) 0 2px, transparent 2px 5px),
    repeating-linear-gradient(90deg, rgb(255 255 255 / 0.14) 0 2px, transparent 2px 13px);
  background-size: 100% 22%, 100% 44%;
  background-position: 0 86%, 0 92%;
  background-repeat: no-repeat;
  background-color: var(--clip);
  align-items: flex-start;
  padding-top: 0.55rem;
}

.clip--out {
  --clip: var(--accent);
  --clip-edge: var(--accent-hover);
  color: var(--accent-text);
}

/* The cut: a split through the clip. */
.clip--split {
  background-image: linear-gradient(90deg, transparent calc(62% - 1px), var(--window) calc(62% - 1px) calc(62% + 2px), transparent calc(62% + 2px));
}

/* Like a selected clip in the application. */
.flow__step:hover .clip,
.flow__step.is-current .clip {
  filter: brightness(1.2);
  box-shadow: 0 0 0 1px var(--text);
}

.flow__step:hover p,
.flow__step.is-current p {
  color: var(--text);
}

@media (min-width: 1000px) {
  .flow {
    padding-left: var(--tracks);
  }

  /* Track headers and lanes, as in the application. */
  .flow__tracks {
    font-size: var(--text-micro);
    color: var(--text-muted);
    position: absolute;
    left: 0;
    top: 1.75rem;
    display: grid;
    grid-template-rows: repeat(3, var(--lane));
    row-gap: 0.5rem;
    width: var(--tracks);
    align-items: center;
  }

  .flow__steps {
    position: relative;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 0;
    padding-top: 1.75rem;
    /* ruler ticks above the lanes */
    background-image: repeating-linear-gradient(90deg, var(--border-strong) 0 1px, transparent 1px calc(100% / 7)),
      repeating-linear-gradient(90deg, var(--border) 0 1px, transparent 1px calc(100% / 28));
    background-size: 100% 0.9rem, 100% 0.45rem;
    background-position: 0 0.35rem, 0 0.8rem;
    background-repeat: no-repeat;
  }

  .flow__step {
    display: block;
  }

  .flow__lane {
    position: relative;
    height: calc(3 * var(--lane) + 1rem);
    /* three track lanes */
    background-image: linear-gradient(var(--track), var(--track)), linear-gradient(var(--track), var(--track)),
      linear-gradient(var(--track), var(--track));
    background-size: 100% var(--lane);
    background-position: 0 0, 0 calc(var(--lane) + 0.5rem), 0 calc(2 * var(--lane) + 1rem);
    background-repeat: no-repeat;
  }

  .flow__lane .clip {
    position: absolute;
    left: 2px;
    right: 2px;
    top: calc(var(--row) * (var(--lane) + 0.5rem));
  }

  .flow__step--v2 {
    --row: 0;
  }

  .flow__step--v1 {
    --row: 1;
  }

  .flow__step--a1 {
    --row: 2;
  }

  /* Export: the out point, across all tracks. */
  .flow__step--out .clip {
    top: 0;
    bottom: 0;
    height: auto;
    left: 2px;
    right: 0;
    justify-content: center;
  }

  .flow__step p {
    margin-top: 1.1rem;
    padding-right: 1.25rem;
  }

  .flow__playhead {
    --at: 0;
    display: block;
    position: absolute;
    z-index: 2;
    top: 0.35rem;
    left: var(--tracks);
    width: calc(100% - var(--tracks));
    height: calc(3 * var(--lane) + 2.4rem);
    pointer-events: none;
    transform: translateX(calc(var(--at) * 100%));
    will-change: transform;
  }

  .flow__playhead::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent);
  }

  .flow__playhead::after {
    content: "";
    position: absolute;
    left: -6px;
    top: -2px;
    width: 12px;
    height: 14px;
    background: var(--accent);
    border-radius: 3px 3px 6px 6px;
  }
}

/* ---------- Showcase ---------- */

.showcase {
  padding-top: var(--space-section);
}

.player {
  position: relative;
  margin: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-window);
  overflow: hidden;
  background: #000;
  box-shadow: var(--shadow-window);
}

.player__video {
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  background: #000;
}

/* Without scripts the video's own controls do the job. */
.player__start {
  display: none;
}

.js .player__start {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  gap: 1.1rem;
  width: 100%;
  padding: clamp(1.25rem, 3.5vw, 3rem);
  border: 0;
  background: linear-gradient(0deg, rgb(13 14 19 / 0.82), rgb(13 14 19 / 0) 55%);
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 0.9rem + 1.4vw, 2rem);
  text-align: left;
  cursor: pointer;
}

.js .player.is-started .player__start {
  display: none;
}

.player__icon {
  flex: none;
  display: grid;
  place-items: center;
  width: clamp(3.25rem, 2.5rem + 3vw, 5rem);
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-text);
  box-shadow: 0 12px 30px -8px rgb(0 0 0 / 0.7);
  transition: transform var(--duration) var(--ease-out), background-color var(--duration-fast) ease;
}

.player__icon svg {
  width: 42%;
  margin-left: 6%;
}

.player__text {
  align-self: flex-end;
  padding-bottom: clamp(0.75rem, 0.4rem + 1vw, 1.5rem);
}

.player__time {
  position: absolute;
  top: clamp(1rem, 2.5vw, 2rem);
  right: clamp(1rem, 2.5vw, 2rem);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-small);
  background: rgb(13 14 19 / 0.7);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--text-small);
  font-variant-numeric: tabular-nums;
}

.player__start:hover .player__icon {
  transform: scale(1.07);
  background: var(--accent-hover);
}

.player__error {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1rem 1.5rem;
  background: rgb(13 14 19 / 0.9);
  color: var(--text);
  font-size: var(--text-small);
}

.showcase__more {
  margin-top: 1.5rem;
}

/* ---------- A closer look ---------- */

.gallery {
  padding-top: var(--space-section);
}

.gallery__grid {
  display: grid;
  grid-template-columns: minmax(var(--gutter), 1fr) repeat(12, minmax(0, calc(var(--page-width) / 12))) minmax(var(--gutter), 1fr);
  row-gap: var(--space-block);
}

.plate {
  grid-column: 2 / -2;
  margin: 0;
}

.plate figcaption {
  margin-top: 1.5rem;
  max-width: 30rem;
}

.plate figcaption p {
  margin-top: 0.75rem;
}

@media (min-width: 900px) {
  /* The first plate: picture and caption side by side, caption at the foot. */
  .plate--wide {
    grid-column: 2 / -2;
    display: grid;
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 2.5rem;
    align-items: end;
  }

  .plate--wide figcaption {
    margin: 0 0 0.5rem;
  }

  .plate--left {
    grid-column: 2 / 9;
  }

  /* The export dialog hangs lower, like a print pinned beside the other. */
  .plate--right {
    grid-column: 10 / -2;
    margin-top: clamp(4rem, 9vw, 9rem);
  }
}

/* ---------- Technical ---------- */

.tech {
  margin-top: var(--space-section);
  padding-block: var(--space-section);
  background: var(--window);
  border-block: 1px solid var(--border);
}

.tech__inner {
  display: grid;
  gap: var(--space-block);
}

.tech__head {
  display: grid;
  gap: 1.25rem;
  align-content: start;
}

.tech__head > p:last-child {
  max-width: 28rem;
}

.specs {
  margin: 0;
  border-top: 1px solid var(--border-strong);
}

.specs__row {
  display: grid;
  gap: 0.35rem 2rem;
  padding-block: 1.35rem;
  border-bottom: 1px solid var(--border);
  transition: background-color var(--duration) ease;
}

.specs dt {
  color: var(--text);
  font-weight: 600;
}

.specs dd {
  margin: 0;
  color: var(--text-soft);
}

@media (min-width: 640px) {
  .specs__row {
    grid-template-columns: 7rem minmax(0, 1fr);
  }
}

@media (min-width: 1000px) {
  .tech__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 5rem;
  }

  .tech__head {
    position: sticky;
    top: calc(var(--header-height) + 3rem);
  }
}

/* ---------- Download ---------- */

.download {
  padding-top: var(--space-section);
}

.download__inner {
  display: grid;
  gap: 2.5rem;
}

.download__copy {
  display: grid;
  gap: 1.25rem;
}

.download__copy h2 {
  max-width: 14ch;
}

.download__copy p {
  font-size: var(--text-lede);
}

.download__action {
  display: grid;
  gap: 1rem;
  justify-items: start;
  align-content: end;
}

.download__more,
.download__note {
  font-size: var(--text-small);
  color: var(--text-muted);
}

.download__more .text-link {
  color: var(--text-soft);
}

.download__more .text-link:hover {
  color: var(--text);
}

.download__note {
  max-width: 26rem;
}

.download__meta {
  display: grid;
  gap: 0.3rem;
  font-size: var(--text-small);
  color: var(--text-muted);
}

@media (min-width: 900px) {
  .download__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .js .reveal {
    opacity: 1;
    transform: none;
  }

  .hero__headline,
  .hero__intro,
  .hero__stage {
    animation: none;
  }

  .hero__window {
    transform: none;
  }

  .flow__playhead {
    display: none;
  }
}