:root {
  color-scheme: dark;
  --background: #09090b;
  --foreground: #fafafa;
  --card: #18181b;
  --card-foreground: #fafafa;
  --muted: #27272a;
  --muted-foreground: #a1a1aa;
  --accent: #27272a;
  --accent-foreground: #fafafa;
  --border: rgba(255, 255, 255, 0.1);
  --input: rgba(255, 255, 255, 0.15);
  --primary: #f4f4f5;
  --primary-foreground: #18181b;
  --ring: #71717a;
  --success: #86efac;
  --radius: 0.625rem;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--background);
  color: var(--foreground);
}

body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at 50% -10%, rgba(82, 82, 91, 0.32), transparent 34rem),
    linear-gradient(180deg, #09090b 0%, #0f0f12 100%);
}

a {
  color: inherit;
}

svg {
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 10;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  background: var(--primary);
  color: var(--primary-foreground);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(9, 9, 11, 0.84);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(72rem, calc(100% - 2rem));
  min-height: 3.5rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand,
.nav-links,
.footer-links {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.brand {
  font-weight: 650;
  text-decoration: none;
}

.brand-mark {
  width: 1.75rem;
  height: 1.75rem;
  display: grid;
  place-items: center;
  border-radius: calc(var(--radius) - 0.125rem);
  background: var(--primary);
  color: var(--primary-foreground);
  font-size: 0.85rem;
  font-weight: 800;
}

main {
  flex: 1;
}

.upload-view {
  width: min(48rem, calc(100% - 2rem));
  min-height: calc(100vh - 7.25rem);
  margin: 0 auto;
  padding: 2.5rem 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
}

.hero-copy {
  text-align: center;
}

h1 {
  margin: 0;
  color: var(--foreground);
  font-size: 2rem;
  line-height: 1.12;
  font-weight: 650;
  letter-spacing: 0;
}

.hero-copy p,
.download-subtitle,
.panel-header p {
  margin: 0.55rem 0 0;
  color: var(--muted-foreground);
  font-size: 0.95rem;
  line-height: 1.5;
}

.card {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--card) 94%, transparent);
  box-shadow: var(--shadow);
}

.card-content {
  padding: 1.5rem;
}

.drop-zone {
  min-height: 19rem;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 0.65rem;
  padding: 2rem;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: rgba(39, 39, 42, 0.42);
  text-align: center;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease;
}

.drop-zone:hover,
.drop-zone.is-dragging {
  border-color: var(--primary);
  background: rgba(39, 39, 42, 0.68);
}

.drop-zone input {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  opacity: 0;
  pointer-events: none;
}

.drop-icon {
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  color: var(--muted-foreground);
}

.drop-icon svg {
  width: 2.5rem;
  height: 2.5rem;
}

.drop-title {
  font-size: 1rem;
  font-weight: 650;
}

.drop-copy,
.drop-meta {
  color: var(--muted-foreground);
  font-size: 0.9rem;
}

.drop-meta {
  margin-top: 0.75rem;
  font-size: 0.78rem;
}

.advanced-options {
  margin-top: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(39, 39, 42, 0.28);
  padding: 0.75rem 0.9rem;
}

.advanced-options summary {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--foreground);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1rem;
}

label span {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--foreground);
  font-size: 0.8rem;
  font-weight: 600;
}

input,
select,
button {
  font: inherit;
}

input,
select {
  width: 100%;
  min-height: 2.25rem;
  border: 1px solid var(--input);
  border-radius: calc(var(--radius) - 0.125rem);
  padding: 0.45rem 0.7rem;
  background: var(--background);
  color: var(--foreground);
}

input::placeholder {
  color: var(--muted-foreground);
}

input:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.form-footer,
.result-header {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.form-footer p,
#result-meta {
  margin: 0;
  color: var(--muted-foreground);
  font-size: 0.82rem;
}

.button,
button {
  min-height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  border: 1px solid transparent;
  border-radius: calc(var(--radius) - 0.125rem);
  padding: 0.45rem 0.85rem;
  color: var(--foreground);
  background: transparent;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
}

.button-primary {
  background: var(--primary);
  color: var(--primary-foreground);
}

.button-primary:hover {
  background: #e4e4e7;
}

.button-outline {
  border-color: var(--border);
  background: var(--background);
}

.button-outline:hover,
.button-ghost:hover {
  background: var(--accent);
}

.button-wide {
  width: 100%;
  min-height: 2.75rem;
  margin-top: 1.25rem;
}

.upload-progress {
  margin-top: 1rem;
}

.progress-row {
  display: flex;
  justify-content: space-between;
  color: var(--muted-foreground);
  font-size: 0.8rem;
}

.progress {
  height: 0.4rem;
  margin-top: 0.55rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--muted);
}

.progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--primary);
  transform-origin: left center;
  animation: progress-pulse 1.1s ease-in-out infinite;
}

.upload-result {
  border-color: rgba(244, 244, 245, 0.24);
  background: rgba(244, 244, 245, 0.06);
}

.result-title {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 650;
}

.result-title svg {
  color: var(--success);
}

.result-actions {
  display: flex;
  gap: 0.5rem;
}

.result-list,
.download-list {
  display: grid;
  gap: 0.6rem;
  margin-top: 1rem;
}

.result-item,
.download-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 0.125rem);
  background: var(--background);
  padding: 0.75rem;
}

.result-item > span,
.download-item > span {
  min-width: 0;
  flex: 1;
}

.result-item strong,
.download-item strong,
code {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.result-item small,
.download-item small,
code {
  margin-top: 0.25rem;
  color: var(--muted-foreground);
  font-size: 0.78rem;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

.download-view {
  width: min(38rem, calc(100% - 2rem));
  min-height: calc(100vh - 7.25rem);
  margin: 0 auto;
  padding: 2.5rem 0;
  display: grid;
  place-items: center;
}

.download-card {
  text-align: center;
}

.file-emblem {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--muted);
  color: var(--muted-foreground);
}

.file-emblem svg {
  width: 1.75rem;
  height: 1.75rem;
}

.badge-row {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 1.5rem;
  border-radius: 999px;
  background: var(--muted);
  color: var(--muted-foreground);
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
}

.download-item {
  color: var(--foreground);
  text-align: left;
  text-decoration: none;
}

.site-footer {
  width: min(72rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted-foreground);
  font-size: 0.78rem;
}

.footer-links a {
  text-decoration: none;
}

@keyframes progress-pulse {
  0% {
    transform: scaleX(0.12);
  }
  50% {
    transform: scaleX(0.72);
  }
  100% {
    transform: scaleX(1);
  }
}

@media (max-width: 720px) {
  .nav-links {
    display: none;
  }

  .upload-view,
  .download-view {
    min-height: auto;
    padding: 2rem 0;
  }

  .option-grid,
  .form-footer,
  .result-header,
  .site-footer {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .result-actions {
    width: 100%;
  }

  .result-actions .button {
    flex: 1;
  }

  h1 {
    font-size: 1.65rem;
  }

  .drop-zone {
    min-height: 15rem;
  }
}