@import url("https://fonts.googleapis.com/css2?family=Public+Sans:ital,wght@0,400;0,500;0,600;0,700;1,500;1,600&family=JetBrains+Mono:wght@400;500;600&display=swap");

/* ==========================================================================
   Design tokens — modeled on real DICOM/PACS viewers (OHIF, Sectra, RadiAnt):
   black viewports, navy chrome, cyan accent, plain functional typography.
   No serif, no warm cast — clinical software reads as instrumentation, not
   editorial. JetBrains Mono carries data readouts & system labels.
   ========================================================================== */
:root {
  --bg: #060910;
  --bg-raised: #0b111c;
  --panel: #0c1220;
  --panel-border: #1c2740;
  --panel-border-hover: #2f4568;
  --text: #e9eff8;
  --text-dim: #91a5c2;
  --text-faint: #56687f;
  --accent: #35c8ec;
  --accent-strong: #17a8cf;
  --accent-soft: rgba(53, 200, 236, 0.1);
  --accent-line: rgba(53, 200, 236, 0.35);
  --accent-ink: #031015;
  --error: #ff6b6b;
  --error-bg: rgba(255, 107, 107, 0.09);
  --error-border: rgba(255, 107, 107, 0.32);
  --radius: 4px;
  --radius-lg: 6px;
  --font-display: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --max: 1000px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  background-color: var(--bg);
  background-image: radial-gradient(ellipse 900px 500px at 50% -10%, rgba(53, 200, 236, 0.05), transparent 60%);
  color: var(--text);
  font-family: var(--font-display);
  line-height: 1.55;
  position: relative;
}

/* Fine grain overlay for texture — keeps flat dark panels from feeling like
   an untextured template background. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.22;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

::selection {
  background: var(--accent);
  color: var(--accent-ink);
}

a {
  color: var(--accent);
}

code {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

/* ---------- Ruler ticks (decorative, reinforces "measurement") ---------- */

.ruler {
  position: relative;
  z-index: 1;
  height: 22px;
  max-width: var(--max);
  margin: 0 auto;
  background-image: repeating-linear-gradient(
    90deg,
    var(--panel-border) 0,
    var(--panel-border) 1px,
    transparent 1px,
    transparent 24px
  );
  background-position: 1.5rem 0;
  opacity: 0.7;
}

/* ---------- Top nav ---------- */

.topnav {
  position: relative;
  z-index: 2;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.1rem 1.5rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.topnav-links {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.topnav-links a {
  color: var(--text-dim);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.topnav-links a:hover,
.topnav-links a[aria-current="page"] {
  color: var(--accent);
  border-color: var(--accent-line);
}

.topnav-links a.external::after {
  content: "\2197";
  margin-left: 0.25em;
  opacity: 0.7;
}

/* ---------- Header ---------- */

.site-header {
  position: relative;
  z-index: 1;
  padding: 1.75rem 1.5rem 1.5rem;
  max-width: var(--max);
  margin: 0 auto;
  animation: rise 0.6s ease both;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: none;
  position: relative;
  border: 1.5px solid var(--accent-line);
  border-radius: 50%;
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  background: var(--accent);
}

.brand-mark::before {
  left: 50%;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 10px 2px rgba(53, 200, 236, 0.55);
}

.brand-mark::after {
  left: 50%;
  top: -1px;
  width: 1px;
  height: 8px;
  transform: translateX(-50%);
  opacity: 0.7;
}

.site-header h1 {
  margin: 0;
  font-size: clamp(1.7rem, 1.3rem + 1.4vw, 2.3rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.site-header h1 em {
  color: var(--accent);
  font-style: italic;
  font-weight: 500;
}

.subhead {
  margin: 0.3rem 0 0;
  color: var(--text-dim);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

/* ---------- Disclaimer ---------- */

.disclaimer {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto 1.75rem;
  padding: 0.9rem 1.5rem;
  font-size: 0.86rem;
  color: #cfe8f5;
  background: rgba(53, 200, 236, 0.05);
  border-top: 1px solid var(--accent-line);
  border-bottom: 1px solid var(--accent-line);
  font-family: var(--font-mono);
}

.disclaimer strong {
  color: var(--accent);
  font-weight: 600;
}

.disclaimer-results {
  margin: 1.5rem 0 0;
  border-radius: var(--radius);
  border: 1px solid var(--accent-line);
}

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

.layout {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  display: grid;
  gap: 1.5rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  position: relative;
  animation: rise 0.6s ease both;
}

/* Viewfinder corner brackets — a signature detail echoing an imaging
   device's frame rather than a plain rounded card. */
.panel {
  --bracket: 14px;
}

.panel > .bracket {
  position: absolute;
  width: var(--bracket);
  height: var(--bracket);
  pointer-events: none;
  opacity: 0.85;
}

.panel > .bracket.tl {
  top: -1px;
  left: -1px;
  border-top: 1.5px solid var(--accent-line);
  border-left: 1.5px solid var(--accent-line);
}

.panel > .bracket.br {
  bottom: -1px;
  right: -1px;
  border-bottom: 1.5px solid var(--accent-line);
  border-right: 1.5px solid var(--accent-line);
}

.panel h2 {
  margin: 0 0 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.panel h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--panel-border);
}

/* ---------- Dropzone ---------- */

.dropzone {
  border: 1.5px dashed var(--panel-border-hover);
  border-radius: var(--radius);
  min-height: 230px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: crosshair;
  transition: border-color 0.15s ease, background-color 0.15s ease;
  outline: none;
}

.dropzone:hover,
.dropzone:focus-visible {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.dropzone.dragover {
  border-color: var(--accent-strong);
  background: var(--accent-soft);
}

.dropzone-content {
  text-align: center;
  color: var(--text-dim);
  padding: 2rem;
}

.upload-icon {
  width: 30px;
  height: 30px;
  color: var(--accent);
  margin-bottom: 0.7rem;
}

.dropzone-content p {
  margin: 0.25rem 0;
}

.dropzone-content strong {
  color: var(--text);
}

.or-text {
  font-size: 0.82rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

.dropzone-preview {
  width: 100%;
  padding: 1rem;
  display: flex;
  justify-content: center;
}

/* ---------- Viewport (real PACS/DICOM viewer convention: a black frame
   around the image with small corner data readouts baked onto it, and a
   cyan border marking it "active" — borrowed from how OHIF/Sectra/RadiAnt
   actually present a loaded scan) ---------- */

.viewport {
  position: relative;
  width: 100%;
  max-width: 420px;
  border-radius: 3px;
  overflow: hidden;
  background: #000;
  border: 1px solid var(--panel-border);
}

.viewport.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-line);
}

.viewport img {
  display: block;
  width: 100%;
  max-height: 360px;
  object-fit: contain;
  margin: 0 auto;
}

.viewport-tag {
  position: absolute;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
  pointer-events: none;
}

.viewport-tag.tl {
  top: 7px;
  left: 8px;
}

.viewport-tag.tr {
  top: 7px;
  right: 8px;
}

.viewport-tag.bl {
  bottom: 7px;
  left: 8px;
}

.viewport-tag.br {
  bottom: 7px;
  right: 8px;
  color: var(--accent);
}

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

.upload-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.35rem;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: opacity 0.15s ease, background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.35;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-strong);
}

.btn-ghost {
  background: transparent;
  color: var(--text-dim);
  border-color: var(--panel-border-hover);
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--accent);
}

/* ---------- Sample gallery ---------- */

.sample-gallery {
  margin-top: 1.5rem;
  padding-top: 1.35rem;
  border-top: 1px solid var(--panel-border);
}

.sample-gallery-label {
  margin: 0 0 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-faint);
}

.sample-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.7rem;
}

@media (max-width: 480px) {
  .sample-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.sample-btn {
  padding: 0;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  background: var(--bg-raised);
  cursor: pointer;
  overflow: hidden;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.sample-btn:hover:not(:disabled),
.sample-btn:focus-visible {
  border-color: var(--accent);
  outline: none;
}

.sample-btn:disabled {
  cursor: wait;
  opacity: 0.6;
}

.sample-btn.is-selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-line);
}

.sample-btn img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: #000;
}

.sample-tag {
  display: block;
  padding: 0.4rem 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  text-align: center;
}

.sample-btn.is-selected .sample-tag {
  color: var(--accent);
}

/* ---------- Error ---------- */

.error-message {
  margin: 1.1rem 0 0;
  padding: 0.8rem 1rem;
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error);
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-family: var(--font-mono);
}

/* ---------- Results ---------- */

.loading-state {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-dim);
  padding: 1.5rem 0;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.spinner {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--panel-border-hover);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.results-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1.75rem;
}

@media (max-width: 640px) {
  .results-grid {
    grid-template-columns: 1fr;
  }
}

.gradcam-figure {
  margin: 0;
}

.gradcam-figure figcaption {
  margin-top: 0.65rem;
  font-size: 0.76rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

/* Matches app/gradcam.py's _apply_jet_colormap exactly -- brightness peaks
   mid-scale (green/yellow), not at either end, so a color legend is more
   accurate here than describing the map as "brighter = more influence". */
.heatmap-legend {
  display: block;
  margin-top: 0.5rem;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(
    90deg,
    rgb(0, 0, 128) 0%,
    rgb(0, 0, 255) 12%,
    rgb(0, 128, 255) 25%,
    rgb(0, 255, 255) 38%,
    rgb(128, 255, 128) 50%,
    rgb(255, 255, 0) 62%,
    rgb(255, 128, 0) 75%,
    rgb(255, 0, 0) 88%,
    rgb(128, 0, 0) 100%
  );
}

.predicted-label-tag,
.confidence-label-tag {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-faint);
}

.confidence-label-tag {
  margin-top: 1.6rem;
}

.predicted-class {
  margin: 0;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: capitalize;
  letter-spacing: -0.01em;
}

.confidence-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.confidence-row {
  display: grid;
  grid-template-columns: 90px 1fr 48px;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.84rem;
  font-family: var(--font-mono);
}

.confidence-row .class-name {
  text-transform: capitalize;
  color: var(--text-dim);
}

.confidence-row.is-top .class-name {
  color: var(--text);
  font-weight: 600;
}

.confidence-bar-track {
  display: block;
  height: 7px;
  background: var(--bg-raised);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--panel-border);
}

.confidence-bar-fill {
  display: block;
  height: 100%;
  background: var(--text-faint);
  border-radius: 4px;
}

.confidence-row.is-top .confidence-bar-fill {
  background: var(--accent);
}

.confidence-value {
  text-align: right;
  color: var(--text-dim);
}

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

.site-footer {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 3rem;
  color: var(--text-faint);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  border-top: 1px solid var(--panel-border);
  padding-top: 1.75rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer a {
  color: var(--text-dim);
  text-decoration: underline;
  text-decoration-color: var(--panel-border-hover);
  text-underline-offset: 3px;
}

.site-footer a:hover {
  color: var(--accent);
}

/* ==========================================================================
   About page — editorial storytelling, same clinical tokens. The layout
   still carries a magazine-like rhythm; only the typography and palette
   are clinical now, not the structure.
   ========================================================================== */

.story-hero {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
  animation: rise 0.6s ease both;
}

.story-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1rem;
}

.story-hero h1 {
  margin: 0 0 1.1rem;
  font-size: clamp(2.2rem, 1.7rem + 2.2vw, 3.6rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.01em;
  max-width: 16ch;
}

.story-hero h1 em {
  font-style: italic;
  color: var(--accent);
  font-weight: 500;
}

.story-lede {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 56ch;
  line-height: 1.65;
}

.story-section {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem 3.5rem;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2.5rem;
}

@media (max-width: 720px) {
  .story-section {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

.story-section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  padding-top: 0.3rem;
}

.story-section-label span {
  display: block;
  color: var(--accent);
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.story-body {
  max-width: 66ch;
}

.story-body h2 {
  font-size: 1.6rem;
  font-weight: 600;
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}

.story-body p {
  margin: 0 0 1.1rem;
  color: var(--text-dim);
  font-size: 1.02rem;
}

.story-body p strong {
  color: var(--text);
  font-weight: 600;
}

.story-body a {
  text-decoration: underline;
  text-decoration-color: var(--accent-line);
  text-underline-offset: 3px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--panel-border);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 1.5rem 0;
}

@media (max-width: 560px) {
  .stat-row {
    grid-template-columns: 1fr;
  }
}

.stat-cell {
  background: var(--panel);
  padding: 1.1rem 1.3rem;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  margin-top: 0.3rem;
}

.pipeline {
  list-style: none;
  margin: 1.5rem 0;
  padding: 0;
  counter-reset: step;
  display: grid;
  gap: 0.9rem;
}

.pipeline li {
  counter-increment: step;
  position: relative;
  padding: 0.95rem 1.1rem 0.95rem 3.2rem;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
}

.pipeline li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  border: 1px solid var(--accent-line);
  border-radius: 50%;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pipeline strong {
  display: block;
  color: var(--text);
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.pipeline span {
  color: var(--text-dim);
  font-size: 0.88rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.5rem 0;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--panel-border-hover);
  border-radius: 999px;
  color: var(--text-dim);
}

.confusion-matrix-wrap {
  margin: 1.5rem 0;
  overflow-x: auto;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
}

.confusion-matrix {
  border-collapse: collapse;
  width: 100%;
  min-width: 460px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.confusion-matrix caption {
  caption-side: top;
  text-align: left;
  padding: 0.9rem 1rem 0.6rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--text-dim);
}

.confusion-matrix th,
.confusion-matrix td {
  padding: 0.65rem 0.8rem;
  text-align: center;
  border: 1px solid var(--panel-border);
}

.confusion-matrix thead th {
  color: var(--text-faint);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  background: var(--bg-raised);
}

.confusion-matrix tbody th {
  color: var(--text-faint);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-align: left;
  background: var(--bg-raised);
  white-space: nowrap;
}

.confusion-matrix td {
  color: var(--text);
  background: rgba(53, 200, 236, var(--intensity, 0));
}

.confusion-matrix td.diag {
  font-weight: 600;
  box-shadow: inset 0 0 0 1px var(--accent-line);
}

.story-cta {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
  text-align: center;
}

.story-cta-panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  position: relative;
}

.story-cta-panel h2 {
  font-size: 1.7rem;
  margin: 0 0 0.6rem;
  font-weight: 600;
}

.story-cta-panel p {
  color: var(--text-dim);
  margin: 0 0 1.5rem;
}

/* ---------- Motion ---------- */

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.layout .panel:nth-of-type(1) {
  animation-delay: 0.05s;
}

.layout .panel:nth-of-type(2) {
  animation-delay: 0.12s;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .panel,
  .site-header,
  .story-hero {
    animation: none;
  }
  .spinner {
    animation-duration: 1.6s;
  }
}