*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-2: #334155;
  --border: #475569;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --accent: #818cf8;
  --accent-hover: #6366f1;
  --success: #34d399;
  --error: #f87171;
  --warning: #fbbf24;
  --radius: 8px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --mono: 'Cascadia Code', 'Fira Code', 'JetBrains Mono', monospace;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 1.2rem;
}

.tagline {
  color: var(--text-dim);
  font-size: 0.875rem;
}

.toolbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
  overflow-x: auto;
}

.toolbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 0.25rem;
}

.tool-btn {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 0.8rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}

.tool-btn:hover {
  background: var(--surface-2);
  color: var(--text);
}

.tool-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent-hover);
}

.tool-icon {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.75rem;
}

.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
}

.tool-panel {
  display: none;
}

.tool-panel.active {
  display: block;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.tool-panel h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text);
}

.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 3rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--surface);
  margin-bottom: 1rem;
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(129, 140, 248, 0.05);
}

.drop-zone-icon {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.drop-zone-text {
  color: var(--text-dim);
  font-size: 0.95rem;
}

.drop-zone-hint {
  color: var(--text-dim);
  font-size: 0.75rem;
  margin-top: 0.25rem;
}

.file-input-hidden {
  display: none;
}

.image-info {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
}

.image-info span {
  color: var(--text-dim);
}

.image-info strong {
  color: var(--accent);
}

.preview-area {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.preview-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
}

.preview-box label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.preview-box img,
.preview-box canvas {
  max-width: 100%;
  max-height: 300px;
  border-radius: 4px;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.option-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.option-group label {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-weight: 600;
}

.option-group input[type="number"],
.option-group input[type="text"],
.option-group select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.85rem;
}

.option-group input:focus,
.option-group select:focus {
  outline: none;
  border-color: var(--accent);
}

.option-group select {
  cursor: pointer;
}

.option-group input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.range-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.range-val {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  min-width: 3em;
  text-align: right;
}

.btn-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s;
}

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

.btn-primary {
  background: var(--accent);
  border-color: var(--accent-hover);
  color: #fff;
  font-weight: 600;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-large {
  padding: 0.75rem 2rem;
  font-size: 1rem;
}

.status-msg {
  font-size: 0.85rem;
  padding: 0.35rem 0;
  min-height: 1.5em;
}

.status-msg.success { color: var(--success); }
.status-msg.error { color: var(--error); }
.status-msg.info { color: var(--accent); }

.crop-container {
  position: relative;
  display: inline-block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 1rem;
  max-width: 100%;
}

.crop-container canvas {
  display: block;
  max-width: 100%;
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.preset-btn {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s;
  text-align: left;
}

.preset-btn:hover {
  border-color: var(--accent);
}

.preset-btn .preset-name {
  display: block;
  font-weight: 600;
}

.preset-btn .preset-size {
  color: var(--text-dim);
  font-size: 0.7rem;
}

.batch-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.batch-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  text-align: center;
}

.batch-item img {
  max-width: 100%;
  max-height: 120px;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.batch-item .batch-name {
  font-size: 0.75rem;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.batch-item .batch-size {
  font-size: 0.7rem;
  color: var(--text-dim);
}

.filter-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.filter-control label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.25rem;
  font-weight: 600;
}

.filter-control .range-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.filter-control input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
}

.filter-control .range-val {
  min-width: 3em;
  text-align: right;
}

.ad-slot {
  margin: 1rem 0;
}

.ad-placeholder {
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.8rem;
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.affiliate-section {
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.affiliate-section h3 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.affiliate-intro {
  color: var(--text-dim);
  font-size: 0.8rem;
  margin-bottom: 1rem;
}

.affiliate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
}

.affiliate-card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: all 0.15s;
}

.affiliate-card:hover {
  border-color: var(--accent);
  background: var(--bg);
  transform: translateY(-1px);
}

.affiliate-icon {
  font-size: 1.5rem;
}

.affiliate-name {
  font-weight: 700;
  font-size: 0.9rem;
}

.affiliate-desc {
  color: var(--text-dim);
  font-size: 0.75rem;
  line-height: 1.4;
}

.footer {
  text-align: center;
  padding: 2rem 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.85rem;
}

.footer a {
  color: var(--accent);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

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

.share-buttons {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}

.share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.15s;
  padding: 0;
}

.share-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg);
}

@media (max-width: 768px) {
  .preview-area {
    grid-template-columns: 1fr;
  }

  .header-inner {
    flex-direction: column;
    text-align: center;
  }

  .toolbar-inner {
    padding-bottom: 0.25rem;
  }

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

  .filter-controls {
    grid-template-columns: 1fr;
  }
}