/* PicPerfect -- Tool Page + Homepage Cards v4 */

/* ============================================
   TOOL CARDS -- asymmetric bento grid
   ============================================ */
.tools-grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 0.75rem;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}
/* Alternate row direction */
.tools-grid > :nth-child(3) { order: 3; }
.tools-grid > :nth-child(4) { order: 4; }
/* Row 3: three equal items */
.tools-row-3 {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}
/* Row 4: full width */
.tools-row-4 { grid-column: 1 / -1; }

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.tool-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  color: inherit;
}
.tool-card:active { transform: scale(0.99); }
.tool-card-icon {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
}
.tool-card h3 { font-size: 0.875rem; font-weight: 600; }
.tool-card p { font-size: 0.8125rem; color: var(--text-muted); line-height: 1.5; }
.tool-card-arrow {
  font-size: 0.75rem; color: var(--accent-text);
  font-weight: 500; display: flex; align-items: center;
  gap: 0.25rem; margin-top: auto;
  transition: gap var(--transition-fast);
}
.tool-card:hover .tool-card-arrow { gap: 0.5rem; }

/* Full-width compressor card -- distinct treatment */
.tool-card--full {
  flex-direction: row;
  align-items: center;
  gap: 1rem;
  background: var(--bg-secondary);
}
.tool-card--full .tool-card-text { flex: 1; display: flex; flex-direction: column; gap: 0.25rem; }
.tool-card--full .tool-card-arrow { margin-top: 0; }

/* ============================================
   TOOL SECTION (tool pages)
   ============================================ */
.tool-section { max-width: 800px; margin: 0 auto; padding: 0 1.5rem 5rem; }

/* Drop Zone */
.drop-zone {
  position: relative;
  border: 1.5px dashed var(--border-hover);
  border-radius: var(--radius-xl);
  padding: 3.5rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--bg-card);
  min-height: 180px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 0.625rem;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--text-muted); background: var(--bg-secondary);
}
.drop-zone.drag-over { border-style: solid; border-color: var(--text-primary); }
.drop-zone-icon {
  width: 44px; height: 44px;
  background: var(--bg-secondary); border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto;
}
.drop-zone-icon svg { width: 20px; height: 20px; color: var(--text-muted); }
.drop-zone-title { font-size: 0.9375rem; font-weight: 600; color: var(--text-primary); }
.drop-zone-sub { font-size: 0.8125rem; color: var(--text-muted); }
.drop-zone-sub span { color: var(--accent-text); font-weight: 500; cursor: pointer; }
.drop-zone input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.drop-zone.has-image { padding: 1rem; cursor: default; }
.drop-zone.has-image input[type="file"] { display: none; }

/* Tool Panel */
.tool-panel {
  display: none; margin-top: 1.5rem;
  animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.tool-panel.visible { display: block; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Preview */
.preview-area {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1rem; margin-bottom: 1.5rem;
}
.preview-box {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 0.75rem; overflow: hidden;
}
.preview-label {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 0.5rem;
}
.preview-label span {
  font-size: 0.6875rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted);
}
.preview-label .dims {
  font-family: var(--font-mono); font-size: 0.6875rem;
  font-variant-numeric: tabular-nums; color: var(--accent-text);
}
.preview-canvas-wrap {
  position: relative;
  background: repeating-conic-gradient(var(--bg-secondary) 0% 25%, var(--bg-card) 0% 50%) 0 0 / 14px 14px;
  border-radius: var(--radius-md); overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  min-height: 160px;
}
.preview-canvas-wrap img,
.preview-canvas-wrap canvas {
  max-width: 100%; max-height: 300px;
  object-fit: contain; display: block;
}

/* Presets */
.preset-section { margin-bottom: 1.25rem; }
.preset-section h3 {
  font-size: 0.6875rem; font-weight: 600;
  margin-bottom: 0.5rem; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.06em;
}
.preset-grid { display: flex; flex-wrap: wrap; gap: 0.375rem; }
.preset-btn {
  padding: 0.375rem 0.75rem; border-radius: var(--radius-full);
  font-size: 0.75rem; font-weight: 500;
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  display: flex; align-items: center; gap: 0.3rem;
}
.preset-btn:hover { border-color: var(--border-hover); color: var(--text-primary); }
.preset-btn.active {
  background: var(--text-primary); border-color: var(--text-primary);
  color: var(--bg-primary);
}
.preset-btn .preset-dims {
  font-family: var(--font-mono); font-size: 0.625rem; opacity: 0.55;
}

/* Controls */
.controls-row {
  display: flex; gap: 0.875rem; align-items: flex-end;
  flex-wrap: wrap; margin-bottom: 1.25rem;
}
.control-group { display: flex; flex-direction: column; gap: 0.3rem; }
.control-group label {
  font-size: 0.6875rem; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.control-group select,
.control-group input[type="number"] {
  padding: 0.5rem 0.75rem; font-size: 0.8125rem; min-width: 100px;
}
.control-group input[type="range"] { width: 100px; accent-color: var(--text-primary); }
.fit-modes {
  display: flex; gap: 0;
  border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden;
}
.fit-mode-btn {
  padding: 0.4375rem 0.75rem; font-size: 0.75rem; font-weight: 500;
  color: var(--text-muted); transition: all var(--transition-fast);
  border-right: 1px solid var(--border);
}
.fit-mode-btn:last-child { border-right: none; }
.fit-mode-btn:hover { color: var(--text-primary); background: var(--bg-secondary); }
.fit-mode-btn.active { color: var(--bg-primary); background: var(--text-primary); }

/* Action Bar */
.action-bar {
  display: flex; gap: 0.625rem; align-items: center;
  padding: 1rem; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.action-bar .btn { flex: 1; }
.action-bar .btn-reset { flex: 0; padding: 0.5625rem; }

/* Processing */
.processing-overlay {
  position: absolute; inset: 0;
  background: rgba(250,250,249,0.9);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 0.625rem;
  border-radius: var(--radius-xl); z-index: 10;
}
.processing-spinner {
  width: 28px; height: 28px;
  border: 2px solid var(--border);
  border-top-color: var(--text-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.processing-text { font-size: 0.8125rem; color: var(--text-secondary); }
.download-success { animation: successPulse 0.4s cubic-bezier(0.32, 0.72, 0, 1); }
@keyframes successPulse {
  0% { box-shadow: 0 0 0 0 rgba(13,147,115,0.2); }
  100% { box-shadow: 0 0 0 6px rgba(13,147,115,0); }
}

/* ============================================
   CONTENT GUIDE
   ============================================ */
.content-guide { max-width: 580px; margin: 0 auto; padding: 4rem 1.5rem; position: relative; z-index: 1; }
.content-guide h2 { font-size: 1.375rem; font-weight: 700; margin-bottom: 1rem; letter-spacing: -0.02em; }
.content-guide h3 { font-size: 1.0625rem; font-weight: 600; margin: 2.5rem 0 0.75rem; color: var(--text-primary); }
.content-guide p { color: var(--text-secondary); line-height: 1.7; margin-bottom: 0.75rem; font-size: 0.9375rem; max-width: 65ch; }
.content-guide ul, .content-guide ol {
  color: var(--text-secondary); line-height: 1.7;
  margin-bottom: 0.75rem; padding-left: 1.25rem; font-size: 0.9375rem;
}
.content-guide li { margin-bottom: 0.3rem; }

/* Steps */
.steps { counter-reset: step; margin: 1.5rem 0; }
.step {
  counter-increment: step;
  display: flex; gap: 0.875rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(234,234,234,0.5);
}
.step:last-child { border-bottom: none; }
.step::before {
  content: counter(step);
  display: flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  background: var(--bg-secondary); border-radius: var(--radius-full);
  font-size: 0.6875rem; font-weight: 700; color: var(--text-muted);
  flex-shrink: 0; margin-top: 0.125rem;
}
.step-content h4 { font-weight: 600; margin-bottom: 0.125rem; font-size: 0.875rem; }
.step-content p { color: var(--text-secondary); font-size: 0.8125rem; margin-bottom: 0; }

/* Internal Links */
.internal-links { max-width: 580px; margin: 0 auto; padding: 2rem 1.5rem; position: relative; z-index: 1; }
.internal-links h3 {
  font-size: 0.6875rem; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.625rem;
}
.internal-links-list { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.internal-links-list a {
  padding: 0.25rem 0.625rem;
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-full); font-size: 0.75rem; color: var(--text-muted);
  transition: all var(--transition-fast);
}
.internal-links-list a:hover { border-color: var(--text-primary); color: var(--text-primary); }

/* Change Image Button */
.change-image-btn {
  position: absolute; top: 0.5rem; right: 0.5rem; z-index: 5;
  padding: 0.25rem 0.5rem;
  background: rgba(250,250,249,0.85);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 0.6875rem; color: var(--text-muted);
  transition: all var(--transition-fast);
}
.change-image-btn:hover { color: var(--text-primary); border-color: var(--border-hover); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .tools-grid { grid-template-columns: 1fr; }
  .tools-row-3 { grid-template-columns: 1fr; }
  .preview-area { grid-template-columns: 1fr; }
  .controls-row { flex-direction: column; align-items: stretch; }
  .control-group select,
  .control-group input[type="number"] { width: 100%; }
  .action-bar { flex-direction: column; }
  .action-bar .btn { width: 100%; }
  .tool-card--full { flex-direction: column; }
}