/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
}

.header-inner {
  margin: 0 auto;
  padding: var(--space-md) var(--content-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
  text-decoration: none;
}

.header-brand:hover { text-decoration: none; }

.header-brand-icon {
  font-size: 1.5em;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: background var(--duration-fast);
  color: var(--color-text);
}

.theme-toggle:hover {
  background: var(--color-surface2);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: var(--space-xl) 0;
}

.footer-inner {
  margin: 0 auto;
  padding: 0 var(--content-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-text2);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--color-text2);
}

.footer-links a:hover {
  color: var(--tool-primary);
  text-decoration: none;
}

/* Tool Container — full width, fills viewport */
.tool-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  margin: 0 auto;
  padding: var(--space-md) var(--content-padding);
  min-height: 0;
  overflow-y: auto;
}

/* Tool Hero — compact */
.tool-hero {
  text-align: left;
  padding: var(--space-md) 0 var(--space-xs);
}

.tool-hero h1 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.tool-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text2);
  margin: 0;
}

/* Tool Workspace — grows to fill, never shrinks below content */
.tool-workspace {
  flex: 1 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto minmax(0, 1fr);
  gap: var(--space-md);
  margin: var(--space-md) 0 var(--space-lg);
  min-height: 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .tool-workspace {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto minmax(0, 1fr);
    gap: var(--space-lg);
  }

  .tool-input-panel  { grid-column: 1; grid-row: 2; }
  .tool-output-panel { grid-column: 2; grid-row: 2; }
  .tool-actions {
    grid-column: 1 / -1;
    grid-row: 1;
  }
}

.tool-input-panel,
.tool-output-panel {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: var(--space-sm);
  min-height: 0;
}

.tool-label {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0;
  grid-row: 1;
}

.tool-textarea {
  width: 100%;
  grid-row: 2;
  min-height: 320px;
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  resize: none;
  transition: border-color var(--duration-fast);
}

.tool-textarea:focus {
  border-color: var(--tool-primary);
  outline: none;
}

.tool-textarea::placeholder {
  color: var(--color-text3);
}

/* Dropzone */
.tool-dropzone {
  flex: 1;
  min-height: 320px;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--duration-fast);
  background: var(--color-surface);
  position: relative;
}

.tool-dropzone:hover,
.tool-dropzone.drag-over {
  border-color: var(--tool-primary);
  background: color-mix(in srgb, var(--tool-primary) 5%, var(--color-surface));
}

.dropzone-content {
  text-align: center;
  pointer-events: none;
}

.dropzone-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--space-md);
}

.dropzone-hint {
  font-size: var(--text-sm);
  color: var(--color-text3);
  margin-top: var(--space-sm);
}

.dropzone-file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* Tool Actions — compact top bar */
.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  padding: 0 0 var(--space-sm) 0;
}

.tool-status {
  font-size: var(--text-sm);
  color: var(--color-text2);
  margin-left: auto;
}

.tool-status.success { color: var(--color-success); }
.tool-status.error { color: var(--color-error); }
.tool-status.loading { color: var(--color-text2); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 10px 20px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: all var(--duration-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--tool-primary);
  color: white;
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background: var(--color-surface2);
  color: var(--color-text);
}

.btn-secondary:hover {
  background: var(--color-border);
}

/* Tool Preview — fill container */
img#tool-preview-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  image-rendering: auto;
}

.tool-preview {
  flex: 1;
  min-height: 320px;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-direction: column;
  gap: var(--space-md);
}

.tool-preview-placeholder {
  color: var(--color-text3);
  text-align: center;
}

.tool-canvas-container {
  flex: 1;
  min-height: 320px;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.tool-canvas-container canvas {
  max-width: 100%;
  max-height: 100%;
  width: auto !important;
  height: auto !important;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-lg) 0;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-lg);
  text-align: center;
}

.feature-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: var(--space-sm);
}

.feature-card h3 {
  font-size: var(--text-base);
  margin-bottom: var(--space-xs);
}

.feature-card p {
  font-size: var(--text-sm);
  color: var(--color-text2);
  margin: 0;
}

/* How To Steps */
.howto-steps {
  max-width: 600px;
  margin: var(--space-lg) auto;
}

.howto-step {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.howto-step:last-child { border-bottom: none; }

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--tool-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.howto-step h3 {
  font-size: var(--text-base);
  margin-bottom: var(--space-xs);
}

.howto-step p {
  font-size: var(--text-sm);
  color: var(--color-text2);
  margin: 0;
}

/* FAQ */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: var(--space-sm);
  overflow: hidden;
}

.faq-item summary {
  padding: var(--space-md) var(--space-lg);
  font-weight: 600;
  cursor: pointer;
  background: var(--color-surface);
  user-select: none;
}

.faq-item summary:hover {
  background: var(--color-surface2);
}

.faq-item p {
  padding: var(--space-md) var(--space-lg);
  font-size: var(--text-sm);
  color: var(--color-text2);
  margin: 0;
  border-top: 1px solid var(--color-border);
}

/* Related Tools */
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.related-card {
  display: block;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--duration-fast);
}

.related-card:hover {
  border-color: var(--tool-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  text-decoration: none;
}

.related-card h3 {
  font-size: var(--text-base);
  color: var(--tool-primary);
  margin-bottom: var(--space-xs);
}

.related-card p {
  font-size: var(--text-sm);
  color: var(--color-text2);
  margin: 0;
}

/* Ad Containers */
.ad-container {
  margin: var(--space-lg) auto;
  min-height: 90px;
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
}

.ad-header { max-width: 970px; }
.ad-sidebar { max-width: 300px; }
.ad-below-tool { max-width: 728px; }

/* Tab System */
.tool-tabs {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.tool-tab {
  padding: 8px 16px;
  border-radius: var(--radius) var(--radius) 0 0;
  font-size: var(--text-sm);
  color: var(--color-text2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-bottom: none;
}

.tool-tab.active {
  color: var(--tool-primary);
  background: var(--color-bg);
  font-weight: 600;
}

/* Section Headings */
.tool-features h2,
.tool-howto h2,
.tool-faq h2,
.tool-related h2 {
  text-align: center;
  margin-bottom: var(--space-lg);
}

/* Hidden */
.hidden {
  display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
  .tool-hero h1 { font-size: var(--text-2xl); }
  .tool-textarea { min-height: 240px; }
  .tool-dropzone { min-height: 240px; }
  .header-inner { padding: var(--space-sm) var(--content-padding); }
  .footer-inner { flex-direction: column; text-align: center; }
}