/**
 * CSS View Transition Generator
 * Prefix: cvt-
 * Common components use dtc-* classes from tools-common.css
 */

:root {
  --dtc-primary: #8b5cf6;
  --dtc-primary-light: #f3e8ff;
  --dtc-primary-dark: #7c3aed;
  --dtc-bg: #f8fafc;
  --dtc-bg-card: #ffffff;
  --dtc-border: #e2e8f0;
  --dtc-text: #1e293b;
  --dtc-text-muted: #64748b;
  --dtc-radius: 12px;
  --dtc-radius-sm: 6px;
  --dtc-transition: 0.2s ease;
}

/* ── Base ── */
.cvt-container {
  font-family: inherit;
  color: var(--dtc-text);
  max-width: 100%;
}
.cvt-container > p,
.cvt-container > br { display: none !important; }
.cvt-app * { margin-top: 0 !important; }

/* ── Presets ── */
.cvt-presets-wrap {
  margin-bottom: 24px;
}
.cvt-presets-wrap > p, .cvt-presets-wrap > br { display: none !important; }
.cvt-presets-header {
  font-size: .9rem;
  font-weight: 700;
  margin-bottom: 12px !important;
  color: var(--dtc-text-muted);
  text-align: center;
}
.cvt-presets {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 12px;
  scrollbar-width: thin;
}
.cvt-presets::-webkit-scrollbar { height: 6px; }
.cvt-presets::-webkit-scrollbar-thumb { background: var(--dtc-border); border-radius: 3px; }
.cvt-preset-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 100px;
  padding: 16px 12px;
  background: var(--dtc-bg-card);
  border: 2px solid var(--dtc-border);
  border-radius: var(--dtc-radius);
  cursor: pointer;
  color: var(--dtc-text);
  font-weight: 600;
  font-size: .85rem;
  white-space: normal;
  word-break: break-word;
  transition: var(--dtc-transition);
}
.cvt-preset-btn:hover { border-color: var(--dtc-primary-light); background: var(--dtc-primary-light); }
.cvt-preset-btn.active { border-color: var(--dtc-primary); background: var(--dtc-primary-light); color: var(--dtc-primary); }
.cvt-preset-icon { font-size: 1.8rem; line-height: 1; display: block; }

/* ── App Layout (1 Column Stack) ── */
.cvt-app {
  display: flex;
  flex-direction: column;
  gap: 24px;
  background: var(--dtc-bg-card);
  border: 1px solid var(--dtc-border);
  border-radius: var(--dtc-radius);
  padding: 24px;
  margin-bottom: 32px;
}
.cvt-app > p, .cvt-app > br { display: none !important; }

/* ── Preview Area ── */
.cvt-preview-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}
.cvt-preview-section > p, .cvt-preview-section > br { display: none !important; }

.cvt-preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.cvt-preview-title {
  font-size: .95rem;
  font-weight: 700;
}
.cvt-bg-toggles {
  display: flex;
  gap: 8px;
}
.cvt-bg-btn {
  padding: 4px 12px;
  font-size: .8rem;
  border: 1px solid var(--dtc-border);
  background: var(--dtc-bg-card);
  border-radius: var(--dtc-radius-sm);
  cursor: pointer;
}
.cvt-bg-btn.active { background: var(--dtc-primary-light); border-color: var(--dtc-primary); color: var(--dtc-primary); font-weight: 600; }

.cvt-preview-area {
  position: relative;
  width: 100%;
  height: 350px;
  border-radius: var(--dtc-radius);
  border: 1px solid var(--dtc-border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: background 0.3s;
}
.cvt-preview-area.cvt-bg-light { background: #ffffff; }
.cvt-preview-area.cvt-bg-dark { background: #1e293b; }
.cvt-preview-area.cvt-bg-grid {
  background-color: #ffffff !important;
  background-image: 
    linear-gradient(45deg, #f1f5f9 25%, transparent 25%, transparent 75%, #f1f5f9 75%, #f1f5f9),
    linear-gradient(45deg, #f1f5f9 25%, transparent 25%, transparent 75%, #f1f5f9 75%, #f1f5f9) !important;
  background-size: 20px 20px !important;
  background-position: 0 0, 10px 10px !important;
  background-repeat: repeat !important;
}

/* Preview Content Mockup */
.cvt-mockup {
  width: 250px;
  height: 250px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
}
.cvt-mockup-icon { width: 80px; height: 80px; border-radius: 40px; margin-bottom: 16px; }
.cvt-mockup.state-a .cvt-mockup-icon { background: #3b82f6; }
.cvt-mockup.state-b .cvt-mockup-icon { background: #ec4899; }
.cvt-mockup-title { width: 120px; height: 16px; background: #e2e8f0; border-radius: 8px; margin-bottom: 24px; }
.cvt-mockup.state-a .cvt-mockup-title { display: block; }
.cvt-mockup.state-b .cvt-mockup-title { display: none; }
.cvt-mockup-text1 { width: 160px; height: 12px; background: #f1f5f9; border-radius: 6px; margin-bottom: 8px; }
.cvt-mockup-text2 { width: 100px; height: 12px; background: #f1f5f9; border-radius: 6px; }
.cvt-mockup.state-a { border: 2px solid #cbd5e1; }
.cvt-mockup.state-b { border: 2px solid #8b5cf6; background: #f8fafc; }

/* Control Buttons */
.cvt-controls {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 8px;
}
.cvt-controls > p, .cvt-controls > br { display: none !important; }
.cvt-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border: 1px solid var(--dtc-border);
  background: var(--dtc-bg-card);
  border-radius: var(--dtc-radius-sm);
  font-size: .9rem;
  font-weight: 600;
  color: var(--dtc-text);
  cursor: pointer;
  transition: var(--dtc-transition);
}
.cvt-btn:hover { background: var(--dtc-bg); }
.cvt-btn-primary {
  background: var(--dtc-primary);
  color: #fff;
  border-color: var(--dtc-primary);
}
.cvt-btn-primary:hover { background: var(--dtc-primary-dark); }

/* Error Banner */
.cvt-error-banner {
  display: none;
  background: #fee2e2;
  color: #b91c1c;
  padding: 12px 16px;
  border-radius: var(--dtc-radius-sm);
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 16px;
  border: 1px solid #fca5a5;
  text-align: center;
}

/* ── Settings Tabs ── */
.cvt-settings-section {
  width: 100%;
}
.cvt-tabs {
  display: flex;
  border-bottom: 2px solid var(--dtc-border);
  margin-bottom: 16px;
  overflow-x: auto;
  scrollbar-width: none;
}
.cvt-tabs::-webkit-scrollbar { display: none; }
.cvt-tabs > p, .cvt-tabs > br { display: none !important; }
.cvt-tab-btn {
  padding: 10px 16px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--dtc-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
}
.cvt-tab-btn:hover { color: var(--dtc-primary); }
.cvt-tab-btn.active {
  color: var(--dtc-primary);
  border-bottom-color: var(--dtc-primary);
}
.cvt-tab-pane {
  display: none;
  animation: cvtFadeIn .2s ease;
}
.cvt-tab-pane > p, .cvt-tab-pane > br { display: none !important; }
.cvt-tab-pane.active { display: block; }
@keyframes cvtFadeIn { from{opacity:0; transform:translateY(4px);} to{opacity:1; transform:translateY(0);} }

/* ── Inputs ── */
.cvt-input-group {
  margin-bottom: 16px;
}
.cvt-input-group > p, .cvt-input-group > br { display: none !important; }
.cvt-label {
  display: block;
  font-size: .85rem;
  font-weight: 700;
  color: var(--dtc-text);
  margin-bottom: 6px !important;
}
.cvt-text-input {
  width: 100%;
  padding: 10px 12px;
  font-family: monospace;
  font-size: .9rem;
  border: 1px solid var(--dtc-border);
  border-radius: var(--dtc-radius-sm);
  background: var(--dtc-bg-card);
  color: var(--dtc-text);
}
.cvt-text-input:focus { outline: none; border-color: var(--dtc-primary); box-shadow: 0 0 0 3px var(--dtc-primary-light); }
.cvt-textarea {
  width: 100%;
  height: 120px;
  padding: 10px 12px;
  font-family: inherit;
  font-size: .85rem;
  border: 1px solid var(--dtc-border);
  border-radius: var(--dtc-radius-sm);
  resize: vertical;
}
.cvt-textarea:focus { outline: none; border-color: var(--dtc-primary); }
.cvt-flex-row {
  display: flex;
  gap: 16px;
}
.cvt-flex-row > * { flex: 1; }
@media (max-width: 640px) { .cvt-flex-row { flex-direction: column; gap: 12px; } }

/* ── Result Block ── */
.cvt-result-block {
  background: #1e293b;
  border-radius: var(--dtc-radius);
  overflow: hidden;
  margin-bottom: 32px;
}
.cvt-result-block > p, .cvt-result-block > br { display: none !important; }
.cvt-result-header {
  display: flex;
  background: #0f172a;
}
.cvt-result-header > p, .cvt-result-header > br { display: none !important; }
.cvt-result-tab {
  padding: 12px 20px;
  font-size: .85rem;
  font-weight: 600;
  color: #94a3b8;
  background: none;
  border: none;
  cursor: pointer;
}
.cvt-result-tab.active { color: #38bdf8; border-bottom: 2px solid #38bdf8; background: #1e293b; }
.cvt-result-body {
  padding: 20px;
}
.cvt-result-body > p, .cvt-result-body > br { display: none !important; }
.cvt-code-pane { display: none; }
.cvt-code-pane.active { display: block; }
.cvt-code {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: .85rem;
  color: #e2e8f0;
  background: transparent;
  border: none;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
  width: 100%;
  margin: 0 !important;
  padding: 0 !important;
}
.cvt-copy-wrap {
  padding: 0 20px 20px;
  display: flex;
  justify-content: center;
}
.cvt-copy-wrap > p, .cvt-copy-wrap > br { display: none !important; }
.cvt-btn-copy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: #3b82f6;
  color: #fff;
  border: none;
  border-radius: 20px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: .2s;
}
.cvt-btn-copy:hover { background: #2563eb; transform: translateY(-1px); }

/* ── SEO Content ── */
.options h2 { margin-top: 32px !important; margin-bottom: 16px !important; }