:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --surface: #ffffff;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --border-focus: #4f46e5;
  --text: #0f172a;
  --text-muted: #64748b;
  --radius-lg: 16px;
  --radius-md: 10px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 4px 18px rgba(15, 23, 42, 0.05);
  --shadow-hover: 0 10px 25px rgba(79, 70, 229, 0.1);
}

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

body {
  font-family: system-ui, -apple-system, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.5;
  background-image: 
    radial-gradient(ellipse 70% 40% at 50% -10%, rgba(99, 102, 241, 0.05), transparent),
    radial-gradient(circle at 100% 100%, rgba(6, 182, 212, 0.04), transparent);
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Breadcrumb Bar */
.seo-breadcrumb-bar {
  max-width: 1120px !important;
  margin: 1.25rem auto 0 auto !important;
  padding: 0 1.25rem !important;
  box-sizing: border-box !important;
}
.seo-breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  font-size: 0.8rem;
  color: #64748b;
}
.seo-breadcrumb-list a {
  color: #64748b;
  text-decoration: none;
  transition: color 0.15s ease;
}
.seo-breadcrumb-list a:hover {
  color: #4f46e5;
}

/* Hero Section */
.hero-sec {
  text-align: center;
  padding: 2.25rem 1rem 1.25rem;
  max-width: 1120px;
  margin: 0 auto;
  box-sizing: border-box;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.35rem 0.95rem;
  background: var(--primary-light);
  border: 1px solid #c7d2fe;
  color: #4338ca;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.hero-title {
  font-size: 2.15rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 0.45rem;
}
.hero-sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 680px;
  margin: 0 auto;
}
.btn-demo-chip {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: #334155;
  border-radius: 999px;
  padding: 5px 13px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.btn-demo-chip:hover {
  background: #f8fafc;
  border-color: #6366f1;
  color: #4338ca;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.14);
  transform: translateY(-1px);
}

/* Studio Main Layout */
.studio-grid {
  max-width: 1120px !important;
  margin: 0 auto 3rem auto !important;
  padding: 0 1.25rem !important;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.5rem;
  align-items: start;
  flex: 1;
  box-sizing: border-box !important;
}
@media (max-width: 900px) {
  .studio-grid { grid-template-columns: 1fr; }
}

/* Left Configuration Panel */
.panel-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: var(--shadow-card);
}
.sec-box {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.sec-title {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 7px;
}

/* Content Type View Modes Header */
.view-mode-toggle {
  display: inline-flex;
  align-items: center;
  background: #f1f5f9;
  padding: 3px;
  border-radius: 9999px;
  border: 1px solid var(--border);
  gap: 3px;
}
.view-mode-btn {
  background: transparent;
  border: none;
  color: #64748b;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.view-mode-btn:hover {
  color: var(--text);
}
.view-mode-btn.active {
  background: #ffffff;
  color: var(--primary);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

/* Base Type Tab Button */
.type-tab-btn {
  background: #ffffff;
  border: 1.5px solid #cbd5e1;
  color: #334155;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
}
.type-tab-btn:hover {
  background: #f8fafc;
  border-color: #6366f1;
  color: #4338ca;
  transform: translateY(-1px);
}
.type-tab-btn.active {
  background: #eef2ff;
  border-color: #6366f1;
  color: #4338ca;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
}

/* Mode 1: Pills (Default / iOS style) */
.type-tabs-container.mode-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.type-tabs-container.mode-pills .type-group,
.type-tabs-container.mode-pills .group-items {
  display: contents;
}
.type-tabs-container.mode-pills .group-title,
.type-tabs-container.mode-pills .type-desc {
  display: none !important;
}
.type-tabs-container.mode-pills .type-tab-btn {
  padding: 7px 14px;
  border-radius: 9999px;
  gap: 6px;
}
.type-tabs-container.mode-pills .type-tab-btn .type-icon {
  font-size: 0.95rem;
}

/* Mode 2: Groups (Categorized) */
.type-tabs-container.mode-groups {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.type-tabs-container.mode-groups .type-group {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px 10px;
}
.type-tabs-container.mode-groups .group-title {
  display: block;
  font-size: 0.72rem;
  font-weight: 800;
  color: #4338ca;
  margin-bottom: 7px;
  letter-spacing: 0.02em;
}
.type-tabs-container.mode-groups .group-items {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.type-tabs-container.mode-groups .type-desc {
  display: none !important;
}
.type-tabs-container.mode-groups .type-tab-btn {
  padding: 6px 12px;
  border-radius: 8px;
  gap: 5px;
  font-size: 0.78rem;
}

/* Mode 3: Cards (Fluent / Win11 grid) */
.type-tabs-container.mode-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
}
.type-tabs-container.mode-cards .type-group,
.type-tabs-container.mode-cards .group-items {
  display: contents;
}
.type-tabs-container.mode-cards .group-title {
  display: none !important;
}
.type-tabs-container.mode-cards .type-tab-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 9px 11px;
  border-radius: 10px;
  gap: 3px;
  text-align: left;
}
.type-tabs-container.mode-cards .type-icon {
  font-size: 1.2rem;
  margin-bottom: 2px;
}
.type-tabs-container.mode-cards .type-label {
  font-size: 0.82rem;
  font-weight: 700;
}
.type-tabs-container.mode-cards .type-desc {
  display: block;
  font-size: 0.68rem;
  color: #64748b;
  font-weight: 400;
  line-height: 1.2;
}
.type-tabs-container.mode-cards .type-tab-btn.active .type-desc {
  color: #4f46e5;
}

/* Form inputs & labels */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.form-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: #475569;
}
.form-input {
  background: #ffffff;
  border: 1.5px solid #cbd5e1;
  border-radius: 8px;
  color: var(--text);
  padding: 0.65rem 0.85rem;
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}
.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}
textarea.form-input {
  resize: vertical;
  min-height: 70px;
  line-height: 1.45;
}
select.form-input {
  cursor: pointer;
}

/* Style selector chips */
.chip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}
.chip-btn {
  background: #ffffff;
  border: 1.5px solid #cbd5e1;
  color: #475569;
  padding: 0.55rem 0.35rem;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s;
}
.chip-btn:hover {
  border-color: #6366f1;
  color: #4338ca;
  background: #f8fafc;
}
.chip-btn.active {
  border-color: #4f46e5;
  background: #eef2ff;
  color: #4338ca;
}

/* Theme presets */
.preset-colors-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
}
.color-preset-card {
  height: 38px;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
  position: relative;
  transition: transform 0.15s, border-color 0.15s;
}
.color-preset-card:hover { transform: scale(1.08); }
.color-preset-card.active { border-color: #0f172a; box-shadow: 0 0 0 2px #4f46e5; }

/* Logo Upload & Custom Elements */
.btn-outline,
label[for="logoUpload"] {
  background: #ffffff !important;
  border: 1.5px dashed #cbd5e1 !important;
  color: #334155 !important;
  transition: all 0.15s ease !important;
}
.btn-outline:hover,
label[for="logoUpload"]:hover {
  border-color: #6366f1 !important;
  color: #4338ca !important;
  background: #f8fafc !important;
}

/* Right Preview Stage */
.stage-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: sticky;
  top: 90px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}
.qr-preview-wrapper {
  width: 310px;
  min-height: 310px;
  height: auto;
  background: #ffffff;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  padding: 15px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
  position: relative;
  transition: all 0.2s ease;
}
#qrCanvas {
  width: 100%;
  max-width: 280px;
  height: auto;
  display: block;
  border-radius: 12px;
}

/* Prompt editor beneath preview */
.preview-prompt-card {
  width: 100%;
  max-width: 310px;
  margin-top: 1.1rem;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.prompt-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.prompt-title {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 5px;
}
.prompt-badge {
  font-size: 0.7rem;
  color: #4338ca;
  font-weight: 700;
  background: #eef2ff;
  padding: 2px 7px;
  border-radius: 6px;
  border: 1px solid #c7d2fe;
}
.prompt-input {
  padding: 0.5rem 0.75rem !important;
  font-size: 0.82rem !important;
}
.prompt-chips-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.prompt-chips-label {
  font-size: 0.7rem;
  color: #64748b;
  align-self: center;
  font-weight: 600;
}
.prompt-chip {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: #334155;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.prompt-chip:hover {
  background: #eef2ff;
  border-color: #818cf8;
  color: #4338ca;
  transform: translateY(-1px);
}
.prompt-chip.clear-chip {
  color: #dc2626;
  border-color: #fecaca;
  background: #fff5f5;
}
.prompt-chip.clear-chip:hover {
  background: #fee2e2;
  border-color: #ef4444;
  color: #b91c1c;
}
.prompt-options-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 6px;
  border-top: 1px solid var(--border);
  font-size: 0.73rem;
}
.prompt-options-left, .prompt-options-right {
  display: flex;
  align-items: center;
  gap: 6px;
}
.prompt-opt-label {
  color: #64748b;
  font-weight: 600;
}
.prompt-radio-label {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  cursor: pointer;
  color: #334155;
  font-weight: 500;
}
.prompt-select {
  padding: 2px 6px;
  font-size: 0.73rem;
  border-radius: 6px;
  border: 1.5px solid #cbd5e1;
  background: #ffffff;
  color: var(--text);
  outline: none;
  cursor: pointer;
}

/* Download / Action Buttons */
.btn-download-main {
  background: linear-gradient(135deg, #4f46e5, #6366f1);
  color: white;
  font-weight: 800;
  padding: 0.85rem 1.75rem;
  border-radius: 10px;
  border: none;
  font-size: 0.95rem;
  cursor: pointer;
  margin-top: 1rem;
  width: 100%;
  max-width: 310px;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
}
.btn-download-main:hover {
  background: linear-gradient(135deg, #4338ca, #4f46e5);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
}
.btn-sub-row {
  display: flex;
  gap: 8px;
  width: 100%;
  max-width: 310px;
  margin-top: 0.65rem;
}
.btn-sub {
  flex: 1;
  background: #ffffff;
  border: 1.5px solid #cbd5e1;
  color: #334155;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: all 0.15s;
}
.btn-sub:hover {
  background: #f8fafc;
  color: #4338ca;
  border-color: #6366f1;
}

/* Hidden element for QRCodejs matrix computing */
#tempQrContainer {
  position: absolute;
  left: -9999px;
  top: -9999px;
  visibility: hidden;
}