@import url("https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap");

:root {
  color-scheme: dark;
  --ink: #071517;
  --surface: #0a1d20;
  --surface-2: #0d2427;
  --line: #254044;
  --line-soft: rgba(132, 174, 176, 0.16);
  --text: #edf6f4;
  --muted: #87a3a4;
  --aqua: #3ce7cf;
  --aqua-bright: #82ffe9;
  --acid: #d8f064;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 78% 8%, rgba(35, 172, 161, 0.1), transparent 28rem),
    linear-gradient(180deg, #071719 0%, var(--ink) 42rem);
  color: var(--text);
  font-family: "DM Sans", sans-serif;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.site-header {
  display: flex;
  width: min(1460px, calc(100% - 48px));
  height: 76px;
  align-items: center;
  justify-content: space-between;
  margin: 0 auto;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  color: var(--text);
  font: 700 12px "Space Mono", monospace;
  letter-spacing: 0.13em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--aqua);
  border-radius: 50%;
  color: var(--aqua);
  font-size: 9px;
}

.status {
  display: flex;
  gap: 9px;
  align-items: center;
  color: var(--muted);
  font: 700 9px "Space Mono", monospace;
  letter-spacing: 0.12em;
}

.status span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--aqua);
  box-shadow: 0 0 12px var(--aqua);
}

main,
footer {
  width: min(1460px, calc(100% - 48px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 80px;
  align-items: end;
  padding: clamp(58px, 8vw, 110px) 0 64px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--aqua);
  font: 700 9px "Space Mono", monospace;
  letter-spacing: 0.2em;
}

h1 {
  margin: 0;
  font-size: clamp(48px, 7vw, 104px);
  font-weight: 500;
  letter-spacing: -0.075em;
  line-height: 0.9;
}

h1 em {
  color: var(--aqua);
  font-style: normal;
}

.hero-copy {
  width: min(580px, 100%);
  margin: 30px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.scope-note {
  position: relative;
  padding: 22px 24px;
  border-top: 1px solid var(--acid);
  background: rgba(216, 240, 100, 0.045);
}

.scope-note span {
  color: var(--acid);
  font: 700 9px "Space Mono", monospace;
  letter-spacing: 0.14em;
}

.scope-note p {
  margin: 10px 0 0;
  color: #bdc9bd;
  font-size: 12px;
  line-height: 1.65;
}

.workspace {
  display: grid;
  grid-template-columns: 350px 1fr;
  min-height: 760px;
  border: 1px solid var(--line);
  background: rgba(7, 21, 23, 0.78);
  box-shadow: 0 34px 100px rgba(0, 0, 0, 0.3);
}

.input-panel {
  padding: 28px;
  border-right: 1px solid var(--line);
  background: rgba(10, 29, 32, 0.7);
}

.section-title {
  display: flex;
  gap: 12px;
  align-items: center;
}

.section-title > span {
  color: var(--aqua);
  font: 700 9px "Space Mono", monospace;
}

.section-title h2 {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.drop-zone {
  display: flex;
  min-height: 240px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-top: 24px;
  border: 1px dashed #3e6164;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 19px, rgba(80, 134, 135, 0.04) 20px),
    rgba(4, 15, 17, 0.45);
  cursor: pointer;
  transition: 180ms ease;
}

.drop-zone:hover,
.drop-zone.dragging {
  border-color: var(--aqua);
  background-color: rgba(60, 231, 207, 0.05);
  transform: translateY(-2px);
}

.drop-zone input {
  display: none;
}

.upload-icon {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  margin-bottom: 16px;
  border: 1px solid var(--aqua);
  border-radius: 50%;
  color: var(--aqua);
  font: 400 22px "Space Mono", monospace;
}

.drop-zone strong {
  font-size: 14px;
}

.drop-zone small {
  margin-top: 8px;
  color: var(--muted);
  font: 400 9px "Space Mono", monospace;
  letter-spacing: 0.1em;
}

.divider {
  display: flex;
  align-items: center;
  margin: 28px 0 14px;
  color: #5f7a7c;
  font: 400 8px "Space Mono", monospace;
  letter-spacing: 0.08em;
}

.divider::before,
.divider::after {
  height: 1px;
  flex: 1;
  background: var(--line-soft);
  content: "";
}

.divider span {
  padding: 0 10px;
}

.samples {
  display: grid;
  gap: 8px;
}

.sample-button {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  gap: 12px;
  align-items: center;
  width: 100%;
  border: 1px solid var(--line-soft);
  padding: 14px;
  background: rgba(11, 33, 36, 0.7);
  text-align: left;
  cursor: pointer;
  transition: 150ms ease;
}

.sample-button:hover {
  border-color: #4b7778;
  background: rgba(22, 58, 60, 0.65);
  transform: translateX(3px);
}

.sample-button > span:nth-child(2) {
  display: flex;
  flex-direction: column;
}

.sample-button strong {
  font-size: 11px;
}

.sample-button small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 9px;
}

.sample-icon {
  color: var(--aqua);
  font: 700 17px "Space Mono", monospace;
}

.sample-button > span:last-child {
  color: #668184;
}

.analysis-panel {
  position: relative;
  min-width: 0;
  padding: clamp(24px, 4vw, 52px);
}

.empty-state {
  display: flex;
  min-height: 650px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.empty-state h2 {
  margin: 30px 0 8px;
  font-size: 20px;
}

.empty-state p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.sonar {
  position: relative;
  display: grid;
  width: 150px;
  height: 150px;
  place-items: center;
  border: 1px solid rgba(60, 231, 207, 0.16);
  border-radius: 50%;
}

.sonar::after {
  position: absolute;
  width: 50%;
  height: 1px;
  transform: translateX(50%) rotate(-35deg);
  transform-origin: left;
  background: linear-gradient(90deg, var(--aqua), transparent);
  content: "";
  animation: sweep 3.2s linear infinite;
}

.sonar i {
  position: absolute;
  border: 1px solid rgba(60, 231, 207, 0.13);
  border-radius: 50%;
}

.sonar i:nth-child(1) {
  width: 70%;
  height: 70%;
}

.sonar i:nth-child(2) {
  width: 42%;
  height: 42%;
}

.sonar i:nth-child(3) {
  width: 16%;
  height: 16%;
}

.sonar span {
  color: var(--aqua);
  font-size: 12px;
}

.sonar .whale-mark {
  z-index: 1;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(60, 231, 207, 0.28);
  border-radius: 50%;
  background: #082023;
  font-size: 23px;
  filter: saturate(0.8);
}

@keyframes sweep {
  to {
    transform: translateX(50%) rotate(325deg);
  }
}

.hidden {
  display: none;
}

.track-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.track-header h2 {
  max-width: 700px;
  overflow: hidden;
  margin: 0;
  font-size: clamp(20px, 3vw, 31px);
  letter-spacing: -0.04em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.track-header > div > p:last-child {
  margin: 8px 0 0;
  color: var(--muted);
  font: 400 9px "Space Mono", monospace;
}

.play-button {
  display: flex;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--aqua);
  padding: 11px 17px;
  background: transparent;
  color: var(--aqua);
  cursor: pointer;
  font-size: 11px;
}

.visual-card {
  margin-bottom: 14px;
  border: 1px solid var(--line-soft);
  background: #071719;
}

.visual-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line-soft);
  color: #779496;
  font: 400 8px "Space Mono", monospace;
  letter-spacing: 0.12em;
}

.canvas-wrap {
  position: relative;
}

#waveformCanvas {
  display: block;
  width: 100%;
  height: 105px;
}

#playhead {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 1px;
  background: var(--acid);
  box-shadow: 0 0 8px var(--acid);
  pointer-events: none;
}

.spectrogram-layout {
  display: grid;
  grid-template-columns: 38px 1fr;
  height: 250px;
}

.frequency-axis {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-right: 1px solid var(--line-soft);
  color: #547174;
  font: 400 7px "Space Mono", monospace;
}

#spectrogramCanvas {
  display: block;
  width: 100%;
  height: 250px;
}

.result-title {
  margin: 34px 0 16px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line-soft);
}

.metrics article {
  min-width: 0;
  padding: 18px;
  border-right: 1px solid var(--line-soft);
}

.metrics article:last-child {
  border-right: 0;
}

.metrics span {
  display: block;
  color: var(--muted);
  font-size: 9px;
}

.metrics strong {
  display: block;
  overflow: hidden;
  margin: 8px 0 10px;
  color: var(--aqua-bright);
  font: 700 clamp(16px, 2vw, 24px) "Space Mono", monospace;
  text-overflow: ellipsis;
}

.metrics small {
  color: #476467;
  font: 400 7px "Space Mono", monospace;
  letter-spacing: 0.1em;
}

.section-title sup {
  margin-left: 5px;
  color: var(--acid);
  font: 700 7px "Space Mono", monospace;
  letter-spacing: 0.08em;
}

.species-section {
  margin-top: 34px;
}

.species-candidates {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 16px;
}

.species-card {
  position: relative;
  overflow: hidden;
  min-height: 145px;
  border: 1px solid var(--line-soft);
  padding: 18px;
  background: rgba(10, 32, 35, 0.72);
}

.species-card.species-rank-1 {
  border-color: rgba(216, 240, 100, 0.55);
  background:
    linear-gradient(145deg, rgba(216, 240, 100, 0.08), transparent 60%),
    rgba(10, 32, 35, 0.9);
}

.species-card.species-rank-1 .species-rank span,
.species-card.species-rank-1 .species-rank strong {
  color: var(--acid);
}

.species-card::after {
  position: absolute;
  right: -25px;
  bottom: -38px;
  width: 100px;
  height: 100px;
  border: 1px solid rgba(60, 231, 207, 0.09);
  border-radius: 50%;
  content: "";
}

.species-rank {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #5d7b7d;
  font: 700 8px "Space Mono", monospace;
  letter-spacing: 0.1em;
}

.species-rank strong {
  color: var(--aqua);
  font-size: 12px;
}

.species-card h3 {
  margin: 17px 0 4px;
  font-size: 14px;
}

.species-card > small {
  color: #668184;
  font-size: 9px;
  font-style: italic;
}

.species-card p {
  position: relative;
  z-index: 1;
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.5;
}

.species-warning {
  margin: 10px 0 0;
  padding-left: 11px;
  border-left: 2px solid rgba(216, 240, 100, 0.45);
  color: #70898a;
  font-size: 9px;
  line-height: 1.6;
}

.interpretation {
  margin-top: 34px;
}

.pattern-result {
  display: grid;
  grid-template-columns: 90px 1fr 180px;
  gap: 20px;
  align-items: center;
  margin-top: 16px;
  border: 1px solid var(--line-soft);
  padding: 22px;
  background: rgba(15, 43, 45, 0.58);
}

.pattern-glyph {
  display: grid;
  width: 70px;
  height: 70px;
  place-items: center;
  border: 1px solid #3b6867;
  border-radius: 50%;
  color: var(--aqua);
  font: 700 20px "Space Mono", monospace;
}

.pattern-result p {
  margin: 0;
  color: var(--muted);
  font-size: 9px;
}

.pattern-result h3 {
  margin: 6px 0 7px;
  font-size: 19px;
}

.pattern-result .pattern-description {
  max-width: 560px;
  line-height: 1.55;
}

.confidence {
  text-align: right;
}

.confidence span {
  color: var(--muted);
  font-size: 8px;
}

.confidence strong {
  display: block;
  margin: 5px 0 10px;
  color: var(--acid);
  font: 700 20px "Space Mono", monospace;
}

.confidence > div {
  height: 3px;
  background: #253b3d;
}

.confidence i {
  display: block;
  width: 0;
  height: 100%;
  background: var(--acid);
  transition: width 500ms ease;
}

.event-timeline {
  position: relative;
  height: 24px;
  margin-top: 14px;
  border: 1px solid var(--line-soft);
  background: #071719;
}

.event-timeline::before {
  position: absolute;
  top: 50%;
  right: 8px;
  left: 8px;
  height: 1px;
  background: #284346;
  content: "";
}

.event-timeline i {
  position: absolute;
  top: 4px;
  width: 2px;
  height: 14px;
  background: var(--aqua);
  box-shadow: 0 0 7px rgba(60, 231, 207, 0.55);
}

.disclaimer {
  margin: 15px 0 0;
  color: #668184;
  font-size: 9px;
  line-height: 1.65;
}

footer {
  display: flex;
  justify-content: space-between;
  padding: 22px 0 34px;
  color: #4f6a6d;
  font: 400 8px "Space Mono", monospace;
  letter-spacing: 0.1em;
}

@media (max-width: 920px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 35px;
  }

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

  .input-panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .drop-zone {
    min-height: 170px;
  }

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

  .metrics article:nth-child(2) {
    border-right: 0;
  }

  .metrics article:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line-soft);
  }

  .species-candidates {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .site-header,
  main,
  footer {
    width: min(100% - 24px, 1460px);
  }

  .hero {
    padding: 54px 0 40px;
  }

  .analysis-panel,
  .input-panel {
    padding: 20px;
  }

  .pattern-result {
    grid-template-columns: 64px 1fr;
  }

  .pattern-glyph {
    width: 56px;
    height: 56px;
  }

  .confidence {
    grid-column: 1 / -1;
    text-align: left;
  }

  footer span:last-child {
    display: none;
  }
}