*, *::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;
}

.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;
}

.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);
}

.tool-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.tool-input, .tool-output {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.tool-input label, .tool-output label {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-weight: 600;
}

.tool-single {
  max-width: 700px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

textarea, input[type="text"] {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.85rem;
  resize: vertical;
  transition: border-color 0.15s;
}

textarea:focus, input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
}

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

.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-icon {
  padding: 0.5rem;
  font-size: 1rem;
  line-height: 1;
}

.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); }

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

.pw-result {
  flex: 1;
  font-size: 1.1rem;
  padding: 0.85rem;
  letter-spacing: 0.05em;
}

.pw-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem;
  background: var(--surface);
  border-radius: var(--radius);
}

.pw-options label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text);
  cursor: pointer;
}

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

.pw-options input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
}

.color-preview-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.color-preview-row input[type="color"] {
  width: 80px;
  height: 80px;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  background: none;
  padding: 0;
}

.color-swatch {
  width: 80px;
  height: 80px;
  border-radius: var(--radius);
  border: 2px solid var(--border);
}

.color-fields {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.color-fields label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  font-weight: 600;
}

.color-fields input {
  flex: 1;
}

.lorem-options {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.lorem-options label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text);
}

.lorem-options input[type="number"] {
  width: 80px;
}

.lorem-output {
  margin-top: 0.5rem;
}

.counter-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
  margin-top: 0.5rem;
}

.stat {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
}

.stat-val {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.md-preview {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  min-height: 200px;
  overflow: auto;
  line-height: 1.7;
}

.md-preview h1, .md-preview h2, .md-preview h3,
.md-preview h4, .md-preview h5, .md-preview h6 {
  margin: 0.5em 0 0.3em;
  color: var(--text);
}

.md-preview p { margin: 0.5em 0; }

.md-preview code {
  background: var(--surface-2);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.9em;
}

.md-preview pre {
  background: var(--surface-2);
  padding: 1rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 0.5em 0;
}

.md-preview pre code {
  background: none;
  padding: 0;
}

.md-preview a { color: var(--accent); }

.md-preview blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  margin: 0.5em 0;
  color: var(--text-dim);
}

.md-preview ul, .md-preview ol {
  padding-left: 1.5rem;
  margin: 0.5em 0;
}

.md-preview img { max-width: 100%; }

.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;
}

.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) {
  .tool-layout {
    grid-template-columns: 1fr;
  }

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

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

  .tool-name {
    display: none;
  }

  .counter-stats {
    grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  }

  .pw-result {
    font-size: 0.9rem;
  }
}

.site-nav {
  display: flex;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.site-nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius);
  transition: color 0.2s, background 0.2s;
}

.site-nav a:hover {
  color: var(--accent);
  background: rgba(129, 140, 248, 0.1);
}

.newsletter-section {
  text-align: center;
  padding: 2rem;
  margin-top: 2rem;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.newsletter-section h3 {
  color: var(--text);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.newsletter-section > p {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
  max-width: 400px;
  margin: 0 auto;
}

.newsletter-form input[type="email"] {
  flex: 1;
  padding: 0.6rem 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
}

.newsletter-form input[type="email"]:focus {
  border-color: var(--accent);
}

.newsletter-note {
  color: var(--text-dim);
  font-size: 0.75rem;
  margin-top: 0.5rem;
  opacity: 0.7;
}