*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  color-scheme: dark;
  --background: #09090b;
  --foreground: #fafafa;
  --card: #09090b;
  --muted-foreground: #a1a1aa;
  --border: #27272a;
  --input: #27272a;
  --ring: #d4d4d8;
  --primary: #fafafa;
  --primary-foreground: #09090b;
  --radius: 0.5rem;
  --font: "Poppins", system-ui, sans-serif;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow: hidden;
}

.app {
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  height: 100vh;
  max-height: 100vh;
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.125rem 1.75rem 0.875rem;
  gap: 0.75rem;
}

.header {
  flex-shrink: 0;
}

h1 {
  margin: 0;
  font-size: 1.875rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.title-signature {
  margin-left: 0.5rem;
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--muted-foreground);
  vertical-align: baseline;
}

.subtitle {
  margin: 0.35rem 0 0;
  color: var(--muted-foreground);
  font-size: 1rem;
}

.workspace {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.875rem;
  min-height: 0;
  overflow: hidden;
}

.panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  padding: 1rem 1.125rem;
}

.panel-title {
  margin: 0 0 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted-foreground);
  flex-shrink: 0;
}

.panel-upload {
  overflow: hidden;
}

.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  flex: 1;
  min-height: 0;
  padding: 0.75rem 1rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: transparent;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.panel-upload.has-files .dropzone {
  flex: 0 0 auto;
  flex-direction: row;
  height: 3rem;
  gap: 0.625rem;
  padding: 0 0.875rem;
}

.panel-upload.has-files .dropzone-hint {
  display: none;
}

.panel-upload.has-files .dropzone-text {
  text-align: left;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--muted-foreground);
  background: rgba(255, 255, 255, 0.03);
}

.dropzone-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  color: var(--muted-foreground);
  flex-shrink: 0;
}

.panel-upload.has-files .dropzone-icon {
  width: 1.75rem;
  height: 1.75rem;
  font-size: 0.875rem;
}

.dropzone-text {
  margin: 0;
  font-size: 1rem;
  color: var(--muted-foreground);
  text-align: center;
}

.dropzone-text strong {
  color: var(--foreground);
  font-weight: 500;
}

.dropzone-hint {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

input[type="file"] {
  display: none;
}

.file-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.625rem;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.panel-upload:not(.has-files) .file-list {
  display: none;
}

.file-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  flex-shrink: 0;
}

.file-thumb {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: calc(var(--radius) - 2px);
  object-fit: cover;
  background: var(--border);
  flex-shrink: 0;
}

.file-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-size {
  color: var(--muted-foreground);
  font-size: 0.8125rem;
  flex-shrink: 0;
}

.file-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  background: transparent;
  border: none;
  color: var(--muted-foreground);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  border-radius: calc(var(--radius) - 2px);
  transition: color 0.15s, background 0.15s;
}

.file-remove:hover {
  color: var(--foreground);
  background: rgba(255, 255, 255, 0.06);
}

.panel-settings {
  justify-content: space-between;
}

.settings {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  flex: 1;
  align-content: start;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.field.full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--muted-foreground);
}

.field input[type="number"],
.field input[type="range"] {
  width: 100%;
}

.field input[type="number"] {
  height: 2.5rem;
  padding: 0 0.75rem;
  background: transparent;
  border: 1px solid var(--input);
  border-radius: var(--radius);
  color: var(--foreground);
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field input[type="number"]:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 1px var(--ring);
}

.field input[type="number"]::placeholder {
  color: var(--muted-foreground);
}

.quality-row {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.25rem 0;
}

.quality-row input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 1.75rem;
  background: transparent;
  cursor: pointer;
}

.quality-row input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  background: var(--border);
  border-radius: 999px;
}

.quality-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin-top: -7px;
  background: var(--primary);
  border: 2px solid var(--background);
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--border);
  transition: transform 0.1s, box-shadow 0.15s;
}

.quality-row input[type="range"]:hover::-webkit-slider-thumb {
  box-shadow: 0 0 0 1px var(--ring);
}

.quality-row input[type="range"]:active::-webkit-slider-thumb {
  transform: scale(1.08);
}

.quality-row input[type="range"]::-moz-range-track {
  height: 6px;
  background: var(--border);
  border-radius: 999px;
  border: none;
}

.quality-row input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--primary);
  border: 2px solid var(--background);
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--border);
  transition: transform 0.1s, box-shadow 0.15s;
}

.quality-row input[type="range"]:hover::-moz-range-thumb {
  box-shadow: 0 0 0 1px var(--ring);
}

.quality-row input[type="range"]:active::-moz-range-thumb {
  transform: scale(1.08);
}

.quality-value {
  min-width: 2rem;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
  color: var(--foreground);
  font-weight: 500;
}

.scale-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.scale-chip {
  height: 2.25rem;
  padding: 0 0.875rem;
  background: transparent;
  color: var(--foreground);
  border: 1px solid var(--border);
  font-size: 0.875rem;
  font-weight: 500;
}

.scale-chip:hover {
  background: rgba(255, 255, 255, 0.05);
}

.scale-chip.active {
  background: var(--primary);
  color: var(--primary-foreground);
  border-color: var(--primary);
}

.scale-custom-input {
  margin-top: 0.5rem;
}

.scale-custom-input.is-hidden {
  display: none;
}

.actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.875rem;
  flex-shrink: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s, border-color 0.15s, opacity 0.15s;
}

button:active:not(:disabled) {
  transform: scale(0.99);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  flex: 1;
  height: 2.625rem;
  padding: 0 1rem;
  background: var(--primary);
  color: var(--primary-foreground);
}

.btn-primary:hover:not(:disabled) {
  background: #e4e4e7;
}

.btn-ghost {
  height: 2.625rem;
  padding: 0 1rem;
  background: transparent;
  color: var(--foreground);
  border: 1px solid var(--border);
}

.btn-ghost:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.05);
}

.output {
  min-height: 0;
  flex-shrink: 0;
}

.results {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-height: 5.5rem;
  overflow-y: auto;
}

.results:empty {
  display: none;
}

.result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.625rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  flex-shrink: 0;
}

.result-item.error {
  border-color: #52525b;
}

.result-info {
  flex: 1;
  min-width: 0;
}

.result-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
}

.result-meta {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
  margin-top: 0.1rem;
}

.result-meta.error-text {
  color: var(--foreground);
}

.btn-download {
  height: 2.125rem;
  padding: 0 0.75rem;
  background: transparent;
  color: var(--foreground);
  border: 1px solid var(--border);
  font-size: 0.875rem;
  flex-shrink: 0;
}

.btn-download:hover {
  background: rgba(255, 255, 255, 0.05);
}

.status-bar {
  margin: 0 0 0.4rem;
  font-size: 0.9375rem;
  color: var(--muted-foreground);
  text-align: center;
  min-height: 1.125rem;
}

.status-bar:empty {
  display: none;
}

.status-bar.active {
  color: var(--foreground);
}

footer {
  padding-top: 0.625rem;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.875rem;
  color: var(--muted-foreground);
  flex-shrink: 0;
}

footer a {
  font-weight: 500;
  color: var(--foreground);
  text-decoration: none;
  transition: opacity 0.15s;
}

footer a:hover {
  opacity: 0.7;
}

@media (max-width: 768px) {
  body {
    overflow: auto;
  }

  .app {
    height: auto;
    max-height: none;
    min-height: 100vh;
    padding: 1.25rem 1rem 1.5rem;
  }

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

  .dropzone {
    min-height: 140px;
  }

  .file-list {
    max-height: none;
  }

  .results {
    max-height: none;
  }

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

  .actions {
    flex-direction: column;
  }
}