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

:root {
  --brand: #2d6a4f;
  --brand-light: #52b788;
  --brand-dark: #1b4332;
  --accent: #d4a853;
  --text: #1c1917;
  --text-muted: #64748b;
  --text-faint: #94a3b8;
  --bg: #fafaf8;
  --bg-warm: #f5f0e8;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow-sm: 0 1px 4px rgba(0,0,0,.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.12);
}

html { scroll-behavior: smooth; }
body { font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; min-height: 100vh; display: flex; flex-direction: column; }
a { color: inherit; text-decoration: none; }

/* ── Nav ── */
.svn-nav {
  padding: 0 24px; height: 56px; display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border); background: rgba(250,250,248,.92);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 50;
}
.svn-nav-logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 15px; color: var(--brand-dark); }
.svn-nav-links { display: flex; gap: 20px; }
.svn-nav-links a { font-size: 13px; color: var(--text-muted); transition: color .2s; font-weight: 500; }
.svn-nav-links a:hover { color: var(--brand); }

/* Settings button */
.svn-settings-btn {
  background: none; border: 1px solid var(--border); border-radius: 8px;
  padding: 6px 8px; cursor: pointer; color: var(--text-muted); transition: all .2s;
  display: flex; align-items: center;
}
.svn-settings-btn:hover { border-color: var(--brand-light); color: var(--brand); }

/* Settings overlay */
.svn-settings-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 100;
  display: flex; align-items: center; justify-content: center;
}
.svn-settings-modal {
  background: white; border-radius: 16px; padding: 28px 32px; max-width: 520px; width: 90%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25); max-height: 85vh; overflow-y: auto;
}
.svn-settings-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 6px; }
.svn-settings-desc { font-size: 0.75rem; color: var(--text-faint); margin-bottom: 20px; }
.svn-settings-section {
  margin-bottom: 14px; padding: 12px; background: #f9fafb;
  border-radius: 10px; border: 1px solid #e5e7eb;
}
.svn-settings-section-label { font-size: 0.8rem; font-weight: 600; color: #333; margin-bottom: 2px; }
.svn-settings-section-hint { font-size: 0.7rem; color: #999; margin-bottom: 8px; }
.svn-settings-row { display: flex; gap: 8px; }
.svn-settings-row select {
  flex: 1; padding: 6px 8px; border: 1px solid #ddd; border-radius: 6px; font-size: 0.8rem;
}
.svn-settings-keys-title { font-size: 0.8rem; font-weight: 600; color: #333; margin-bottom: 4px; }
.svn-settings-keys-hint { font-size: 0.7rem; color: #888; margin-bottom: 12px; }
.svn-settings-key-row { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.svn-settings-key-label { width: 70px; font-size: 0.75rem; color: #555; flex-shrink: 0; }
.svn-settings-key-input {
  flex: 1; padding: 6px 8px; border: 1px solid #ddd; border-radius: 6px; font-size: 0.8rem;
}
.svn-settings-save {
  width: 100%; padding: 10px; background: var(--brand); color: white; border: none;
  border-radius: 8px; font-size: 0.85rem; cursor: pointer; font-weight: 500; margin-top: 16px;
}
.svn-settings-save:hover { background: var(--brand-dark); }

/* ── Main ── */
.svn-main { max-width: 860px; margin: 0 auto; padding: 0 24px; flex: 1; width: 100%; }

/* ── Hero ── */
.svn-hero {
  text-align: center; padding: 56px 0 40px;
  background: linear-gradient(160deg, #f0faf4 0%, #fafaf8 50%, #fdf8f0 100%);
  margin: 0 -24px; padding-left: 24px; padding-right: 24px;
  position: relative;
}
.svn-hero::before {
  content: ''; position: absolute; top: -80px; right: -120px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(82,183,136,.1) 0%, transparent 70%);
  pointer-events: none;
}
.svn-hero-badge {
  display: inline-block; background: #e8f5ee; color: var(--brand-dark);
  font-size: 12px; font-weight: 600; padding: 5px 14px; border-radius: 99px;
  letter-spacing: .04em; margin-bottom: 16px;
}
.svn-title {
  font-size: clamp(32px, 6vw, 48px); font-weight: 800; letter-spacing: -.03em;
  color: var(--brand-dark); line-height: 1.1;
}
.svn-subtitle {
  font-size: 17px; color: var(--text-muted); max-width: 540px;
  margin: 14px auto 0; line-height: 1.65;
}

/* Showcase strip */
.svn-showcase {
  display: flex; align-items: center; justify-content: center; gap: 16px;
  margin-top: 28px; flex-wrap: wrap;
}
.svn-showcase-item {
  display: flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 500;
  color: var(--text-muted);
}
.svn-showcase-item svg { color: var(--brand-light); }
.svn-showcase-dot { width: 4px; height: 4px; border-radius: 50%; background: var(--border); }

/* ── Steps Indicator ── */
.svn-steps {
  display: flex; align-items: center; justify-content: center; gap: 0;
  margin: 32px 0 28px; padding: 0 20px;
}
.svn-step {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  position: relative; min-width: 80px;
}
.svn-step-num {
  width: 32px; height: 32px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
  background: #f1f5f9; color: var(--text-faint); border: 2px solid var(--border);
  transition: all .3s;
}
.svn-step.active .svn-step-num { background: var(--brand); color: white; border-color: var(--brand); box-shadow: 0 2px 8px rgba(45,106,79,.3); }
.svn-step.done .svn-step-num { background: #f0fdf4; color: #16a34a; border-color: #bbf7d0; }
.svn-step-label { font-size: 11px; color: var(--text-faint); font-weight: 500; }
.svn-step.active .svn-step-label { color: var(--brand-dark); font-weight: 600; }
.svn-step-line { flex: 1; height: 2px; background: var(--border); min-width: 40px; margin: 0 -4px; margin-bottom: 20px; }

/* ── Sections ── */
.svn-section { margin-bottom: 40px; }
.svn-section-title { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
.svn-section-desc { font-size: 14px; color: var(--text-muted); margin-bottom: 20px; line-height: 1.6; }

/* ── Upload Zone ── */
.svn-upload-zone {
  border: 2px dashed var(--border); border-radius: 16px; padding: 48px 24px;
  text-align: center; cursor: pointer; transition: all .25s;
  background: var(--bg-card); box-shadow: var(--shadow-sm);
}
.svn-upload-zone:hover, .svn-upload-zone.drag-over {
  border-color: var(--brand); background: #f0faf4;
  box-shadow: 0 0 0 4px rgba(45,106,79,.08);
}
.svn-upload-icon { color: var(--text-faint); margin-bottom: 8px; }
.svn-upload-zone:hover .svn-upload-icon { color: var(--brand); }
.svn-upload-text { font-size: 16px; color: var(--text-muted); font-weight: 500; }
.svn-upload-or { font-size: 12px; color: var(--text-faint); margin: 8px 0; }
.svn-upload-btn {
  padding: 8px 20px; border: 1.5px solid var(--brand); border-radius: 8px;
  background: white; color: var(--brand); font-size: 13px; font-weight: 600;
  cursor: pointer; transition: all .2s;
}
.svn-upload-btn:hover { background: var(--brand); color: white; }
.svn-upload-hint { font-size: 12px; color: var(--text-faint); margin-top: 12px; }

/* ── Photo Preview ── */
.svn-photo-preview { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.svn-photo-thumb {
  width: 80px; height: 80px; border-radius: 10px; object-fit: cover;
  border: 2px solid var(--border); transition: all .2s;
}
.svn-photo-thumb-wrap { position: relative; }
.svn-photo-thumb-wrap:hover .svn-photo-thumb { border-color: var(--brand-light); transform: scale(1.05); }
.svn-photo-remove {
  position: absolute; top: -6px; right: -6px; width: 22px; height: 22px;
  border-radius: 50%; background: #ef4444; color: white; border: 2px solid white;
  font-size: 11px; cursor: pointer; display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity .2s; box-shadow: 0 2px 6px rgba(0,0,0,.15);
}
.svn-photo-thumb-wrap:hover .svn-photo-remove { opacity: 1; }

/* ── GPX Section ── */
.svn-gpx-section { margin-top: 20px; }
.svn-gpx-header {
  display: flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600;
  color: var(--text-muted); margin-bottom: 8px;
}
.svn-gpx-optional {
  font-size: 11px; font-weight: 500; color: var(--text-faint);
  background: #f1f5f9; padding: 2px 8px; border-radius: 4px; margin-left: auto;
}
.svn-gpx-drop {
  border: 1.5px dashed var(--border); border-radius: 10px; padding: 14px 16px;
  cursor: pointer; transition: all .2s; background: var(--bg-card); font-size: 13px;
  color: var(--text-faint);
}
.svn-gpx-drop:hover { border-color: var(--brand-light); background: #f0faf4; }
.svn-gpx-drop.has-gpx { border-color: var(--brand); background: #f0faf4; border-style: solid; }
.svn-gpx-drop.has-gpx .svn-gpx-drop-text { color: var(--brand-dark); font-weight: 500; }

/* ── Product Grid ── */
.svn-product-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.svn-product-card {
  border: 2px solid var(--border); border-radius: var(--radius); padding: 20px 12px;
  text-align: center; cursor: pointer; transition: all .25s; background: var(--bg-card);
  -webkit-user-select: none; user-select: none; position: relative; box-shadow: var(--shadow-sm);
}
.svn-product-card.selected {
  border-color: var(--brand); background: #f0faf4;
  box-shadow: 0 0 0 3px rgba(45,106,79,.1), var(--shadow-sm);
}
.svn-product-card:hover { border-color: var(--brand-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.svn-product-check {
  position: absolute; top: 8px; right: 8px; width: 20px; height: 20px;
  border-radius: 50%; border: 2px solid var(--border); background: white;
  display: flex; align-items: center; justify-content: center; transition: all .2s;
}
.svn-product-card.selected .svn-product-check { background: var(--brand); border-color: var(--brand); }
.svn-product-check svg { opacity: 0; transition: opacity .2s; }
.svn-product-card.selected .svn-product-check svg { opacity: 1; }
.svn-product-icon { margin-bottom: 8px; color: var(--text-muted); }
.svn-product-card.selected .svn-product-icon { color: var(--brand); }
.svn-product-name { font-size: 13px; font-weight: 600; }
.svn-product-dims { font-size: 11px; color: var(--text-faint); margin-top: 3px; }

/* ── Variant selector ── */
.svn-options-row { margin-top: 20px; }
.svn-variant-row { display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--text-muted); }
.svn-variant-selector { display: flex; gap: 4px; }
.svn-var-btn {
  width: 32px; height: 32px; border-radius: 8px; border: 1.5px solid var(--border);
  background: white; font-size: 13px; font-weight: 600; cursor: pointer;
  transition: all .2s; color: var(--text-muted);
}
.svn-var-btn:hover { border-color: var(--brand-light); }
.svn-var-btn.active { background: var(--brand); color: white; border-color: var(--brand); }

/* ── Usage Hint ── */
.svn-usage-hint { font-size: 12px; color: var(--text-faint); text-align: center; margin-bottom: 6px; }

/* ── Generate Button ── */
.svn-generate-btn {
  margin-top: 24px; width: 100%; padding: 16px; border: none; border-radius: var(--radius);
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
  color: white; font-size: 16px; font-weight: 600; cursor: pointer;
  transition: all .25s; display: flex; align-items: center; justify-content: center; gap: 8px;
  box-shadow: 0 4px 16px rgba(45,106,79,.25);
}
.svn-generate-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(45,106,79,.35); }
.svn-generate-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

/* ── Progress ── */
.svn-progress-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px;
  padding: 32px; box-shadow: var(--shadow-md);
}
.svn-progress-desc { font-size: 14px; color: var(--text-muted); margin-bottom: 20px; }
.svn-progress-bar { height: 10px; border-radius: 5px; background: #f1f5f9; overflow: hidden; margin-bottom: 8px; }
.svn-progress-fill {
  height: 100%; border-radius: 5px; transition: width .4s ease;
  background: linear-gradient(90deg, var(--brand-light), var(--brand)); width: 0%;
}
.svn-progress-pct { text-align: right; font-size: 13px; font-weight: 600; color: var(--brand); margin-bottom: 16px; }
.svn-progress-log {
  font-size: 12px; color: var(--text-muted); max-height: 180px; overflow-y: auto;
  font-family: 'SF Mono', 'Cascadia Code', monospace; background: #f8fafc;
  border-radius: 8px; padding: 12px; border: 1px solid #f1f5f9;
}
.svn-progress-log div { padding: 3px 0; }
.svn-progress-log div::before { content: "> "; color: var(--brand-light); }

/* ── Results Grid ── */
.svn-results-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; }
.svn-result-card {
  border: 1px solid var(--border); border-radius: 14px; overflow: hidden;
  background: var(--bg-card); transition: all .25s; box-shadow: var(--shadow-sm);
}
.svn-result-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.svn-result-img { width: 100%; aspect-ratio: 4/3; object-fit: contain; background: #f8f8f8; display: block; }
.svn-result-info { padding: 12px 14px; }
.svn-result-type {
  font-size: 11px; font-weight: 700; color: var(--brand); text-transform: uppercase;
  letter-spacing: .06em; display: inline-block; background: #e8f5ee; padding: 2px 8px;
  border-radius: 4px;
}
.svn-result-strategy { font-size: 11px; color: var(--text-faint); margin-top: 4px; }
.svn-result-download {
  display: block; text-align: center; padding: 10px; font-size: 13px; font-weight: 600;
  color: var(--brand); border-top: 1px solid var(--border); cursor: pointer; transition: all .2s;
}
.svn-result-download:hover { background: #f0faf4; color: var(--brand-dark); }

/* ── Results Actions ── */
.svn-results-actions { margin-top: 28px; display: flex; justify-content: center; gap: 12px; }
.svn-download-all-btn {
  padding: 12px 28px; border: 2px solid var(--brand); border-radius: var(--radius);
  background: var(--brand); color: white; font-size: 14px; font-weight: 600; cursor: pointer;
  transition: all .2s; display: flex; align-items: center; gap: 8px;
}
.svn-download-all-btn:hover { background: var(--brand-dark); border-color: var(--brand-dark); transform: translateY(-1px); }
.svn-new-btn {
  padding: 12px 28px; border: 2px solid var(--border); border-radius: var(--radius);
  background: white; color: var(--text-muted); font-size: 14px; font-weight: 500; cursor: pointer;
  transition: all .2s;
}
.svn-new-btn:hover { border-color: var(--text-faint); color: var(--text); }

/* ── Footer ── */
.svn-footer {
  text-align: center; padding: 28px 24px; font-size: 13px; color: var(--text-faint);
  border-top: 1px solid var(--border); margin-top: 48px; background: #fafaf8;
}
.svn-footer-inner { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.svn-footer-sep { width: 4px; height: 4px; border-radius: 50%; background: var(--border); }
.svn-footer a { color: var(--brand); font-weight: 500; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .svn-product-grid { grid-template-columns: repeat(3, 1fr); }
  .svn-showcase { gap: 10px; }
  .svn-showcase-dot { display: none; }
}
@media (max-width: 600px) {
  .svn-main { padding: 0 16px; }
  .svn-hero { padding: 40px 16px 32px; margin: 0 -16px; }
  .svn-product-grid { grid-template-columns: repeat(2, 1fr); }
  .svn-results-grid { grid-template-columns: 1fr; }
  .svn-nav-links { display: none; }
  .svn-steps { gap: 0; padding: 0; }
  .svn-step-label { font-size: 10px; }
  .svn-results-actions { flex-direction: column; }
}