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

:root {
  --bg: #f6f8fa;
  --surface: #ffffff;
  --surface-alt: #f3f4f6;
  --border: #d0d7de;
  --border-light: #e5e7eb;
  --text: #082010;
  --muted: #656d76;
  --accent: #082010;
  --accent-hover: #0a3d1f;
  --accent-subtle: rgba(8, 32, 16, 0.06);
  --input-bg: #ffffff;
  --download-bg: #082010;
  --download-hover: #0a3d1f;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* ========= OSS Banner ========= */
.oss-banner {
  text-align: center;
  padding: 10px 20px;
  font-size: 13px;
  color: #c9d1d9;
  background: #082010;
  border-bottom: 1px solid #0a3d1f;
}
.oss-banner a {
  color: #f0ebe2;
  text-decoration: none;
  font-weight: 600;
}
.oss-banner a:hover { text-decoration: underline; color: #fff; }
.oss-banner svg { vertical-align: -1px; fill: #f0ebe2; }

/* ========= Incident Banner ========= */
.incident-banner {
  text-align: center;
  padding: 14px 20px;
  font-size: 15px;
  color: #7c2d12;
  background: #fed7aa;
  border-bottom: 2px solid #ea580c;
  letter-spacing: 0.01em;
  line-height: 1.5;
}
.incident-banner strong { font-size: 16px; }
.incident-banner a { color: #9a3412; font-weight: 600; text-decoration: underline; }
.incident-banner a:hover { color: #7c2d12; }

/* ========= Header ========= */
header {
  text-align: center;
  padding: 40px 20px 16px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.logo-icon { flex-shrink: 0; }
header h1 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}
.logo-accent { color: #4e7a3e; }
.logo-tld {
  font-weight: 500;
  font-size: 24px;
  color: var(--muted);
  letter-spacing: 0;
}
.logo-byline {
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
  opacity: 0.6;
}
.logo-byline a {
  color: var(--muted);
  text-decoration: none;
}
.logo-byline a:hover { text-decoration: underline; opacity: 1; }
.tagline { color: var(--muted); font-size: 15px; margin-top: 12px; }

/* ========= Input Bar ========= */
.input-bar {
  display: flex;
  gap: 12px;
  max-width: 600px;
  margin: 20px auto 32px;
  padding: 0 20px;
}
.input-bar input {
  flex: 1;
  padding: 12px 16px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}
.input-bar input:focus { border-color: var(--accent); }
.input-bar button {
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  background: #082010;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}
.input-bar { flex-wrap: wrap; justify-content: center; }
.rate-limit {
  width: 100%;
  text-align: center;
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--muted);
  opacity: 0.7;
  margin-top: -4px;
  display: none;
}
.rate-limit.warn { color: #cf222e; opacity: 1; font-weight: 500; }

/* ========= Main Layout ========= */
main {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px 40px;
}

/* ========= Preview Panel ========= */
.preview-panel {
  flex: 5;
  height: 600px;
  position: sticky;
  top: 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.preview-placeholder {
  color: var(--muted);
  font-size: 18px;
  text-align: center;
  padding: 20px;
}
#preview-scaler {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
#card-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 4px;
  flex-shrink: 0;
  transform-origin: center center;
  background-size: cover;
  background-position: center;
}
#card {
  width: 520px;
  padding: 32px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  word-wrap: break-word;
  overflow-wrap: break-word;
}
.card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
#card .avatar { width: 48px; height: 48px; border-radius: 50%; }
#card .repo-name { font-size: 20px; font-weight: 600; word-wrap: break-word; overflow-wrap: break-word; letter-spacing: 0.1px; }
#card .card-desc { font-size: 16px; line-height: 1.4; word-wrap: break-word; overflow-wrap: break-word; }
#card .stats { display: flex; gap: 24px; flex-wrap: wrap; font-size: 14px; }
#card .stat { display: flex; align-items: center; gap: 6px; }
#card .stat svg { width: 16px; height: 16px; }

/* ========= Settings Panel ========= */
.settings-panel {
  flex: none;
  width: 340px;
  min-width: 340px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  align-self: flex-start;
}
.settings-divider {
  height: 1px;
  background: var(--border-light);
  margin: 20px 0;
}
.settings-panel h3 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 12px;
}

/* Download */
#download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: #082010;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}
#download-btn.busy { opacity: 0.6; pointer-events: none; }

.download-meta {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}
.download-meta select {
  flex: 1;
  padding: 6px 8px;
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  outline: none;
}
.download-meta select:focus { border-color: var(--accent); }

/* Custom dimensions */
.custom-dims {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
}
.custom-dims input {
  flex: 1;
  padding: 6px 8px;
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  outline: none;
  min-width: 0;
}
.custom-dims input:focus { border-color: var(--accent); }
.custom-dims-x { font-size: 14px; color: var(--muted); }

/* Segmented toggle (theme + bg tabs) */
.theme-toggle, .bg-type-tabs {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.bg-type-tabs { margin-bottom: 12px; }
.theme-btn, .bg-tab {
  flex: 1;
  padding: 7px 12px;
  font-size: 13px;
  font-weight: 500;
  border: none;
  background: var(--input-bg);
  color: var(--muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.bg-tab { padding: 6px 10px; font-size: 12px; }
.theme-btn + .theme-btn,
.bg-tab + .bg-tab { border-left: 1px solid var(--border); }
.theme-btn.active, .bg-tab.active {
  background: var(--accent-subtle);
  color: var(--accent);
  font-weight: 600;
}
.theme-btn:hover:not(.active),
.bg-tab:hover:not(.active) { background: var(--surface-alt); }

/* Background options */
.bg-options { animation: fadeIn 0.15s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.gradient-colors { display: flex; gap: 8px; margin-bottom: 8px; }
.gradient-colors .color-picker-wrap { flex: 1; }

.gradient-slider-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}
.gradient-slider-row span:first-child {
  font-size: 11px;
  color: var(--muted);
  flex-shrink: 0;
  min-width: 52px;
}
.gradient-slider-row input[type="range"] { flex: 1; accent-color: var(--accent); }
.gradient-slider-row span:last-child {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  min-width: 32px;
  text-align: right;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

/* File upload */
.file-upload-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  background: var(--surface-alt);
  border: 1px dashed var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.file-upload-btn:hover { border-color: var(--accent); background: var(--accent-subtle); }

.bg-image-preview {
  margin-top: 8px;
  position: relative;
  display: inline-flex;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.bg-image-preview img { width: 100%; max-height: 100px; object-fit: cover; display: block; }
#bg-image-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 14px;
  cursor: pointer;
  line-height: 1;
}
#bg-image-remove:hover { background: rgba(0,0,0,0.8); }

/* Color pickers */
.color-row { display: flex; gap: 16px; }
.color-picker-wrap { flex: 1; min-width: 0; }
.color-picker-wrap span { display: block; font-size: 11px; color: var(--muted); margin-bottom: 6px; }
.color-wheel {
  width: 100%;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3px;
  cursor: pointer;
  background: transparent;
}
.color-wheel::-webkit-color-swatch-wrapper { padding: 2px; }
.color-wheel::-webkit-color-swatch { border: none; border-radius: 5px; }

/* Element toggles */
.toggle-list { display: flex; flex-direction: column; }
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 0;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid var(--border-light);
}
.toggle-row:last-child { border-bottom: none; }
.toggle-row > span:first-child { font-size: 13px; color: var(--text); }
.toggle-row input[type="checkbox"] { display: none; }
.toggle-switch {
  position: relative;
  width: 36px;
  height: 20px;
  background: var(--border);
  border-radius: 10px;
  transition: background 0.2s;
  flex-shrink: 0;
}
.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.toggle-row input:checked + .toggle-switch { background: var(--accent); }
.toggle-row input:checked + .toggle-switch::after { transform: translateX(16px); }
.toggle-note {
  font-size: 11px;
  color: var(--muted);
  opacity: 0.7;
  margin-top: 4px;
}

/* Branding — corner overlay inside wrapper */
.card-branding {
  position: absolute;
  pointer-events: none;
}
.card-branding img {
  object-fit: contain;
}
#branding-controls { margin-top: 10px; }
.branding-reset-btn {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 6px 10px;
  font-size: 12px;
  color: var(--muted);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.branding-reset-btn:hover { border-color: var(--accent); color: var(--accent); }
.branding-position-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.pos-btn {
  padding: 8px 0;
  font-size: 16px;
  font-weight: 500;
  border: none;
  background: var(--input-bg);
  color: var(--muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  text-align: center;
  line-height: 1.2;
}
.pos-btn:nth-child(2) { border-left: 1px solid var(--border); }
.pos-btn:nth-child(3), .pos-btn:nth-child(4) { border-top: 1px solid var(--border); }
.pos-btn:nth-child(4) { border-left: 1px solid var(--border); }
.pos-btn small { display: block; font-size: 9px; font-weight: 400; margin-top: 2px; }
.pos-btn.active { background: var(--accent-subtle); color: var(--accent); font-weight: 600; }
.pos-btn:hover:not(.active) { background: var(--surface-alt); }

/* Scale sliders */
.scale-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.scale-row:last-child { margin-bottom: 0; }
.scale-label { font-size: 11px; color: var(--muted); min-width: 62px; flex-shrink: 0; }
.scale-row input[type="range"] { flex: 1; accent-color: var(--accent); }
#hscale-value, #radius-value, #branding-scale-value, #branding-opacity-value {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  min-width: 36px;
  text-align: right;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

/* ========= Star Modal ========= */
.star-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 0.2s ease;
}
.star-modal {
  background: #082010;
  color: #f0ebe2;
  border-radius: 16px;
  padding: 36px 40px 28px;
  text-align: center;
  max-width: 400px;
  position: relative;
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
  animation: modalSlide 0.25s ease;
}
@keyframes modalSlide {
  from { opacity: 0; transform: translateY(12px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.star-modal p { font-size: 22px; font-weight: 700; margin-bottom: 8px; color: #f0ebe2; line-height: 1.3; }
.star-modal-sub { font-size: 15px !important; font-weight: 400 !important; color: #b0bab2 !important; margin-bottom: 22px !important; line-height: 1.5 !important; }
.star-modal-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 700;
  color: #082010;
  background: #ffdd00;
  border: none;
  border-radius: 10px;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s;
}
.star-modal-btn:hover { background: #ffe94d !important; }
.star-modal-dismiss {
  display: block;
  margin: 12px auto 0;
  padding: 6px 16px;
  font-size: 13px;
  color: #8a9a8e;
  background: none;
  border: none;
  cursor: pointer;
}
.star-modal-dismiss:hover { color: #f0ebe2; }
.star-modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: #8a9a8e;
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
}
.star-modal-close:hover { color: #f0ebe2; }

/* ========= Footer ========= */
footer {
  text-align: center;
  padding: 24px 20px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--border-light);
}
footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
footer a:hover { text-decoration: underline; }
.license-details {
  margin-top: 8px;
  font-size: 11px;
  color: var(--muted);
}
.license-details summary {
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.15s;
}
.license-details summary:hover {
  opacity: 1;
}
.license-full {
  margin-top: 12px;
  padding: 16px;
  font-size: 10px;
  line-height: 1.5;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  background: var(--surface-alt);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  white-space: pre-wrap;
  text-align: left;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  color: var(--muted);
}
.github-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.github-link svg { vertical-align: -2px; }

/* ========= Support Section ========= */
.support-section {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px 32px;
}
.support-inline {
  max-width: 1400px;
  padding: 8px 20px 32px;
}
.support-content {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 32px;
  background: #082010;
  border-radius: 14px;
  color: #f0ebe2;
}
.support-text { flex: 1; }
.support-text h2 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
  color: #f0ebe2;
}
.support-text p {
  font-size: 13px;
  color: #a0a8a2;
  line-height: 1.5;
  margin-bottom: 14px;
}
.bmc-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  color: #082010;
  background: #ffdd00;
  border: none;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.15s;
}
.bmc-btn:hover { background: #ffe94d; }
.bmc-btn svg { flex-shrink: 0; }
.support-qr {
  flex-shrink: 0;
}
.support-qr img {
  border-radius: 10px;
  border: 3px solid rgba(255,255,255,0.15);
}
@media (max-width: 768px) {
  .support-content { flex-direction: column; text-align: center; padding: 24px 20px; }
  .support-qr img { width: 100px; height: 100px; }
}

/* ========= Screen reader only ========= */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========= SEO Content ========= */
.seo-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px 24px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}
.seo-content h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.seo-content h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-top: 20px;
  margin-bottom: 8px;
}
.seo-content p { margin-bottom: 12px; }
.seo-content ul { margin: 0 0 12px 20px; padding: 0; }
.seo-content li { margin-bottom: 4px; }

/* ========= Responsive ========= */

/* Tablet: side-by-side but tighter */
@media (max-width: 1100px) {
  main { max-width: 100%; }
  .settings-panel { width: 300px; min-width: 300px; padding: 16px; }
  .preview-panel { height: 500px; }
}

/* Mobile: stack vertically */
@media (max-width: 768px) {
  .oss-banner { font-size: 12px; padding: 8px 16px; }

  header { padding: 24px 16px 12px; }
  header h1 { font-size: 28px; }
  .logo { gap: 8px; }
  .logo-icon { width: 28px; height: 28px; }
  .logo-tld { font-size: 18px; }
  .tagline { font-size: 13px; }

  .input-bar {
    max-width: 100%;
    padding: 0 16px;
    margin: 16px auto 20px;
  }
  .input-bar input { font-size: 14px; padding: 10px 12px; }
  .input-bar button { padding: 10px 18px; font-size: 14px; }

  main {
    flex-direction: column;
    padding: 0 12px 24px;
    gap: 16px;
  }

  .preview-panel {
    width: 100%;
    height: auto;
    min-height: 280px;
    max-height: 60vh;
    position: static;
  }

  .settings-panel {
    width: 100%;
    min-width: unset;
    padding: 16px;
  }

  .download-meta { flex-direction: column; }
  .download-meta select { width: 100%; }
  .custom-dims { flex-wrap: wrap; }

  .color-row { gap: 10px; }
  .color-wheel { height: 36px; }

  .branding-position-grid { flex-wrap: wrap; }
  .pos-btn { font-size: 12px; padding: 6px 0; }
  .pos-btn small { font-size: 9px; }

  .star-modal { padding: 24px; margin: 16px; max-width: calc(100vw - 32px); }

  footer { padding: 20px 16px; font-size: 12px; }
  .license-full { font-size: 9px; padding: 12px; }
}

/* Small phones */
@media (max-width: 400px) {
  header h1 { font-size: 24px; }
  .logo-tld { font-size: 16px; }
  .tagline { font-size: 12px; }
  .input-bar { gap: 8px; }
  .settings-panel h3 { font-size: 10px; }
  .toggle-row > span:first-child { font-size: 12px; }
  .scale-label { font-size: 10px; min-width: 50px; }
}