.tool-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 28px;
}

.tool-header > div {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tool-header .lead {
  max-width: 60ch;
}

.tool-grid {
  display: grid;
  gap: var(--tool-card-gap);
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
}

.tool-grid {
  gap: 32px;
}

.tool-grid {
  margin-top: 1.25rem;
}

.upload-card {
  min-height: 260px;
  display: flex;
  flex-direction: column;
}

.upload-area {
  border: 2px dashed var(--border);
  border-radius: 18px;
  padding: 2rem;
  text-align: center;
  background: var(--surface-muted);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
  position: relative;
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.upload-placeholder {
  display: grid;
  gap: 0.4rem;
}

.upload-area.has-files .upload-placeholder {
  display: none;
}

.upload-more {
  display: none;
  align-self: center;
  margin-top: 0.75rem;
}

.upload-area.has-files .upload-more {
  display: inline-flex;
}

.upload-area:hover,
.upload-area.is-dragover {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--accent-soft) 50%, var(--surface));
}

.upload-area input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* Allow scrolling the preview list after files are uploaded */
.upload-area.has-files input[type="file"] {
  pointer-events: none;
}

.upload-icon {
  width: 42px;
  height: 42px;
  margin: 0 auto;
  background: var(--accent-soft);
  border-radius: 12px;
  display: grid;
  place-items: center;
}

.upload-icon svg {
  width: 24px;
  height: 24px;
  fill: var(--primary);
}

.upload-title {
  font-weight: 700;
  margin: 0.6rem 0 0.3rem;
}

.upload-meta {
  margin-top: 0.8rem;
}

.controls-card h2 {
  margin-bottom: 1rem;
}

.control-group {
  margin-bottom: 1.1rem;
}

.control-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.control-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.4rem;
  font-size: 0.9rem;
}

input[type="range"] {
  width: 100%;
}

input[type="number"] {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 0.6rem 0.8rem;
  background: var(--surface);
  color: var(--text);
}

input[type="number"]:disabled {
  background: color-mix(in srgb, var(--surface-muted) 70%, var(--surface));
  color: var(--muted);
  border-color: color-mix(in srgb, var(--border) 70%, transparent);
  cursor: not-allowed;
}

input[type="number"][readonly] {
  background: color-mix(in srgb, var(--surface-muted) 70%, var(--surface));
  color: var(--muted);
  border-color: color-mix(in srgb, var(--border) 70%, transparent);
}

.size-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto;
  gap: 0.6rem;
  align-items: center;
}

.size-hint {
  font-size: 0.85rem;
  margin-top: 0.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.range-note {
  color: var(--muted);
}

.output-note {
  font-size: 0.85rem;
  margin: -0.2rem 0 0.6rem;
}

.lock {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
}

#compressBtn {
  width: 100%;
}

.progress {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1rem;
  font-weight: 600;
  color: var(--muted);
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

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

.preview-card {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 0.8rem;
  align-items: center;
  padding: 0.75rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.upload-preview-grid {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
  text-align: left;
  flex: 1 1 auto;
  overflow: auto;
  padding-right: 6px;
}

/* Keep preview list scrollable on desktop so it doesn't push the whole page */
@media (min-width: 1024px) {
  .upload-area {
    max-height: 520px;
  }

  .upload-preview-grid {
    max-height: 360px;
  }
}

.preview-thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface-muted);
  display: grid;
  place-items: center;
}

.preview-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
  display: block;
}

.preview-info {
  display: grid;
  gap: 0.2rem;
  font-size: 0.9rem;
  color: var(--muted);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.preview-info strong {
  color: var(--text);
}

.how-it-works {
  margin-top: 2rem;
  background: var(--surface-muted);
  border-radius: 14px;
  padding: 0.8rem 1rem;
  border: 1px solid var(--border);
}

.how-it-works summary {
  cursor: pointer;
  font-weight: 600;
}

.how-it-works ul {
  margin: 0.8rem 0 0 1.2rem;
  color: var(--muted);
}

/* Buttons sizing for touch */
.btn {
  min-height: 44px;
  padding: 12px 16px;
}

/* Ensure cards and grid stay flexible */
.card {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

@media (max-width: 1024px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .tool-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .size-row {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .card {
    padding: 16px;
  }

  .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .upload-area {
    padding: 1.5rem;
  }
}

h1, h2 {
  word-break: break-word;
}