:root {
  color-scheme: dark;
  --bg: #06120f;
  --panel: rgba(7, 25, 20, 0.9);
  --panel-strong: rgba(4, 18, 14, 0.96);
  --line: rgba(163, 244, 200, 0.22);
  --line-strong: rgba(163, 244, 200, 0.42);
  --text: #f2fff7;
  --muted: #a9c7bb;
  --green: #20c878;
  --mint: #93f2c1;
  --yellow: #f7d76e;
  --blue: #75d7ff;
  --danger: #ff8a8a;
}

* { box-sizing: border-box; }

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    linear-gradient(90deg, transparent 49.82%, rgba(215, 248, 223, .13) 49.95%, rgba(215, 248, 223, .13) 50.05%, transparent 50.18%),
    linear-gradient(0deg, transparent 16%, rgba(215, 248, 223, .1) 16.12%, rgba(215, 248, 223, .1) 16.28%, transparent 16.4%, transparent 83%, rgba(215, 248, 223, .1) 83.12%, rgba(215, 248, 223, .1) 83.28%, transparent 83.4%),
    linear-gradient(90deg, rgba(9, 98, 60, .22), transparent 28%, transparent 72%, rgba(247, 215, 110, .11)),
    radial-gradient(circle at 50% 14%, rgba(32, 200, 120, .24), transparent 34%),
    var(--bg);
}

button, a {
  font: inherit;
}

button {
  cursor: pointer;
}

.shell {
  width: min(1440px, calc(100vw - 32px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px 0;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 16px;
}

.topbar {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 900;
}

.brand span {
  filter: drop-shadow(0 0 12px rgba(247, 215, 110, .36));
}

.landing {
  align-self: center;
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(360px, 1.1fr);
  gap: 22px;
  align-items: stretch;
}

.hero-copy {
  position: relative;
  min-height: 430px;
  padding: 34px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(7, 48, 34, .96), rgba(4, 18, 14, .93)),
    var(--panel);
}

.hero-copy::before {
  content: "";
  position: absolute;
  left: -42px;
  bottom: 18px;
  width: 150px;
  height: 150px;
  border: 8px solid rgba(247, 215, 110, .72);
  border-radius: 50%;
  transform: rotate(-28deg);
}

.hero-copy::after {
  content: "";
  position: absolute;
  left: 70px;
  bottom: -86px;
  width: 12px;
  height: 210px;
  border-radius: 999px;
  background: linear-gradient(var(--mint), rgba(147, 242, 193, .18));
  transform: rotate(38deg);
}

h1, h2, p {
  margin: 0;
}

h1 {
  position: relative;
  max-width: 660px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-copy p {
  position: relative;
  max-width: 520px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.upload-card, .panel, .review-frame-panel, .result-side, .side-card, .recent {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 28px 90px rgba(0, 0, 0, .24);
}

.upload-card {
  position: relative;
  min-height: 430px;
  padding: 18px;
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 14px;
}

.upload-card::after {
  content: "🏸  🏸";
  position: absolute;
  right: 26px;
  top: 26px;
  color: rgba(247, 215, 110, .8);
  font-size: 22px;
  letter-spacing: 16px;
  pointer-events: none;
}

.drop-zone {
  min-height: 270px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 12px;
  text-align: center;
  border: 2px dashed rgba(215, 248, 223, .28);
  border-radius: 8px;
  background:
    linear-gradient(90deg, transparent 49%, rgba(215, 248, 223, .14) 49.5%, rgba(215, 248, 223, .14) 50.5%, transparent 51%),
    linear-gradient(180deg, rgba(16, 117, 75, .42), rgba(5, 18, 14, .86));
  cursor: pointer;
}

.drop-zone.dragging {
  border-color: var(--yellow);
  background:
    linear-gradient(90deg, transparent 49%, rgba(247, 215, 110, .28) 49.5%, rgba(247, 215, 110, .28) 50.5%, transparent 51%),
    rgba(31, 191, 117, .16);
}

.drop-zone input { display: none; }
.drop-icon { font-size: 48px; }
.drop-zone strong {
  max-width: 100%;
  padding: 0 20px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-size: 24px;
}
.drop-zone small {
  max-width: 420px;
  color: var(--muted);
  line-height: 1.5;
}

button, .file-actions a, .actions a, .section-title a {
  min-height: 48px;
  display: inline-grid;
  place-items: center;
  border: 1px solid rgba(215, 248, 223, .2);
  border-radius: 8px;
  padding: 0 18px;
  color: var(--text);
  background: rgba(8, 20, 16, .86);
  text-decoration: none;
  font-weight: 850;
}

#startButton {
  min-height: 64px;
  border: 0;
  color: #04120e;
  background: linear-gradient(135deg, var(--mint), var(--yellow));
  font-size: 20px;
}

button:disabled {
  opacity: .48;
  cursor: not-allowed;
  filter: saturate(.5);
}

.ghost, .text-button {
  min-height: 40px;
  color: var(--mint);
  background: rgba(5, 18, 14, .62);
}

.text-button {
  border: 0;
  padding: 0;
  min-height: auto;
  background: transparent;
}

.recent {
  grid-column: 1 / -1;
  padding: 16px;
  display: grid;
  gap: 12px;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.section-title h2, .side-card h2 {
  font-size: 18px;
}

.section-title p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.recent-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-height: 310px;
  overflow-y: auto;
  padding-right: 2px;
}

.recent-item {
  min-height: 76px;
  place-items: start;
  align-content: center;
  gap: 4px;
  text-align: left;
  background: rgba(4, 18, 14, .7);
}

.recent-item span {
  max-width: 100%;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.recent-item small {
  color: var(--muted);
}

.recent-empty {
  min-height: 72px;
  display: grid;
  place-items: center;
  grid-column: 1 / -1;
  color: var(--muted);
  border: 1px dashed rgba(215, 248, 223, .18);
  border-radius: 8px;
  background: rgba(4, 18, 14, .38);
}

.job-panel {
  align-self: center;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 28px;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 30px;
  align-items: center;
}

.smash-loader {
  position: relative;
  height: 220px;
  overflow: hidden;
  border: 1px solid rgba(215, 248, 223, .18);
  border-radius: 8px;
  background:
    linear-gradient(90deg, transparent 49%, rgba(215, 248, 223, .24) 49.5%, rgba(215, 248, 223, .24) 50.5%, transparent 51%),
    linear-gradient(180deg, rgba(15, 122, 76, .28), rgba(6, 18, 15, .94));
}

.court-line {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 44px;
  height: 2px;
  background: rgba(215, 248, 223, .22);
}

.player {
  position: absolute;
  left: 104px;
  top: 48px;
  width: 76px;
  height: 128px;
  animation: player-hop 1.05s ease-in-out infinite;
}

.head, .body, .arm, .leg, .racket, .shuttle {
  position: absolute;
  display: block;
}

.head {
  width: 24px;
  height: 24px;
  left: 26px;
  top: 0;
  border-radius: 50%;
  background: var(--yellow);
}

.body {
  width: 10px;
  height: 58px;
  left: 33px;
  top: 24px;
  border-radius: 999px;
  background: var(--mint);
  transform-origin: top center;
  transform: rotate(-8deg);
}

.arm {
  width: 8px;
  height: 62px;
  left: 38px;
  top: 28px;
  border-radius: 999px;
  background: var(--blue);
  transform-origin: top center;
  animation: smash-arm 1.05s ease-in-out infinite;
}

.racket {
  width: 30px;
  height: 42px;
  left: 56px;
  top: 8px;
  border: 5px solid var(--yellow);
  border-radius: 50%;
  transform-origin: -22px 62px;
  animation: racket-swing 1.05s ease-in-out infinite;
}

.leg {
  width: 9px;
  height: 56px;
  left: 30px;
  top: 78px;
  border-radius: 999px;
  background: #f2fff7;
  transform-origin: top center;
}

.leg.front { transform: rotate(18deg); }
.leg.back { left: 40px; transform: rotate(-18deg); }

.shuttle {
  width: 16px;
  height: 16px;
  right: 36px;
  top: 42px;
  border-radius: 50%;
  background: #fff8c4;
  box-shadow: -10px 6px 0 -4px var(--yellow), -18px 12px 0 -7px var(--yellow);
  animation: shuttle-fly 1.05s ease-in-out infinite;
}

@keyframes player-hop {
  0%, 100% { transform: translateY(10px); }
  45% { transform: translateY(-8px); }
}

@keyframes smash-arm {
  0%, 100% { transform: rotate(-116deg); }
  48% { transform: rotate(42deg); }
}

@keyframes racket-swing {
  0%, 100% { transform: rotate(-76deg); }
  48% { transform: rotate(58deg); }
}

@keyframes shuttle-fly {
  0% { transform: translate(-125px, 78px) scale(.85); opacity: .3; }
  42% { transform: translate(-76px, 28px) scale(1.15); opacity: 1; }
  100% { transform: translate(10px, -6px) scale(.75); opacity: .35; }
}

.job-copy {
  display: grid;
  gap: 14px;
}

.job-copy h2 {
  font-size: 32px;
}

.job-copy p, .error-panel p {
  color: var(--muted);
  line-height: 1.65;
}

.progress {
  height: 14px;
  border-radius: 999px;
  background: rgba(215, 248, 223, .12);
  overflow: hidden;
}

.progress i {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green), var(--yellow));
  transition: width .24s ease;
}

.progress-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
}

.progress-row a {
  color: var(--mint);
}

.result-workspace {
  min-height: calc(100vh - 96px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 14px;
}

.review-frame-panel, .result-side {
  min-height: 0;
}

.review-frame-panel {
  padding: 12px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 12px;
}

.review-frame-panel iframe {
  width: 100%;
  height: 100%;
  min-height: 680px;
  border: 1px solid rgba(215, 248, 223, .14);
  border-radius: 8px;
  background: #06120f;
}

.result-side {
  padding: 0;
  display: grid;
  align-content: start;
  gap: 12px;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.side-card {
  padding: 14px;
  display: grid;
  gap: 12px;
}

.side-card video {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(215, 248, 223, .16);
  border-radius: 8px;
  background: #020806;
}

.file-actions {
  display: grid;
  gap: 10px;
}

.file-actions a[aria-disabled="true"] {
  pointer-events: none;
  opacity: .45;
}

.error-panel {
  align-self: center;
  max-width: 820px;
  width: 100%;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  gap: 18px;
}

.error-panel h2 {
  color: var(--danger);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (max-width: 1020px) {
  .landing, .result-workspace {
    grid-template-columns: 1fr;
  }

  .hero-copy, .upload-card {
    min-height: 320px;
  }

  .review-frame-panel iframe {
    min-height: 560px;
  }

  .recent-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(100vw - 20px, 1440px);
    padding: 12px 0;
  }

  .topbar {
    min-height: 44px;
  }

  .brand {
    font-size: 22px;
  }

  .landing {
    gap: 12px;
  }

  .hero-copy, .upload-card, .job-panel, .error-panel {
    padding: 16px;
  }

  h1 {
    font-size: 40px;
  }

  .hero-copy p {
    font-size: 15px;
  }

  .drop-zone {
    min-height: 220px;
  }

  .job-panel {
    grid-template-columns: 1fr;
  }

  .smash-loader {
    height: 190px;
  }

  .review-frame-panel iframe {
    min-height: 560px;
  }
}

.brand-sublabel {
  font-size: 0.65rem;
  opacity: 0.6;
  margin-left: 0.3rem;
  font-weight: normal;
}