/* ── Base Reset & Globals ─────────────────────────── */
*, *::before, *::after {
  margin: 0; padding: 0; box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--bg-start), var(--bg-end));
  min-height: 100vh;
  line-height: 1.6;
  transition: background var(--duration-slow) var(--ease), color var(--duration) var(--ease);
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }

/* ── Screen system ────────────────────────────────── */
.screen { display: none; min-height: 100vh; }
.screen.active { display: block; animation: screenIn 0.4s var(--ease); }
@keyframes screenIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Shell (content container) ────────────────────── */
.shell {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ── Buttons ──────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  text-decoration: none;
  line-height: 1.4;
}
.btn:hover {
  background: var(--card-hover);
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.btn:active { transform: translateY(0); }
.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-light);
  border-color: var(--accent-light);
  box-shadow: 0 4px 24px var(--glow-accent);
}

.btn-ghost {
  background: transparent;
  border-color: var(--card-border);
}
.btn-ghost:hover {
  background: var(--card-bg);
  border-color: var(--text-muted);
}

.btn-sm { padding: 6px 14px; font-size: 13px; }

/* ── Cards ────────────────────────────────────────── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  box-shadow: var(--shadow-card);
  transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}
.card:hover {
  border-color: var(--card-hover);
}
.card h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}

/* ── Theme toggle button ──────────────────────────── */
.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 200;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  transition: all var(--duration) var(--ease);
}
.theme-toggle:hover {
  border-color: var(--accent);
  background: var(--card-hover);
  transform: rotate(15deg);
}

/* ── Toast notifications ──────────────────────────── */
.toast-item {
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(var(--blur));
  color: var(--text-primary);
  font-size: 14px;
  animation: toastIn 0.3s var(--ease-bounce);
  box-shadow: var(--shadow-card);
}
.toast-item.success { border-color: var(--success); color: var(--success); }
.toast-item.error { border-color: var(--danger); color: var(--danger); }
.toast-item.info { border-color: var(--accent); color: var(--accent); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ── Progress bar fill ────────────────────────────── */
.progress-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--secondary));
  transition: width 0.4s var(--ease);
}

/* ── Score bars ───────────────────────────────────── */
.score-bar-track {
  height: 8px;
  border-radius: 999px;
  background: var(--card-border);
  overflow: hidden;
  margin-top: 4px;
}
.score-bar-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.6s var(--ease-bounce);
}
.score-bar-fill.level-L { background: linear-gradient(90deg, var(--dim-low), var(--dim-low-end)); }
.score-bar-fill.level-M { background: linear-gradient(90deg, var(--dim-mid), var(--dim-mid-end)); }
.score-bar-fill.level-H { background: linear-gradient(90deg, var(--dim-high), var(--dim-high-end)); }

/* ── Dimension items ──────────────────────────────── */
.dim-item {
  margin-bottom: 16px;
}
.dim-item-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}
.dim-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}
.dim-score {
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
}
.dim-score.level-L { color: var(--dim-low); }
.dim-score.level-M { color: var(--dim-mid); }
.dim-score.level-H { color: var(--dim-high); }
.dim-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.5;
}

/* ── Text input ───────────────────────────────────── */
.text-input {
  padding: 10px 14px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xs);
  background: var(--card-bg);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-mono);
  outline: none;
  transition: border-color var(--duration) var(--ease);
  backdrop-filter: blur(var(--blur));
}
.text-input:focus {
  border-color: var(--accent);
}
.text-input::placeholder {
  color: var(--text-muted);
}

/* ── Utility classes ──────────────────────────────── */
.muted-text { color: var(--text-muted); font-size: 13px; }

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 640px) {
  .shell { padding: 0 16px; }
  .card { padding: 16px; }
}

/* SBTI Plus — Layout supplement for app.js/index.html class names */

/* ── Lucide icon utility ──────────────────────────────────── */
.feature-lucide {
  width: 24px;
  height: 24px;
  stroke: var(--accent);
  flex-shrink: 0;
}

/* ── Character Showcase ──────────────────────────────────── */
.character-showcase {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  margin: 0 -20px 24px;
  padding: 0 20px;
  scrollbar-width: none;
}
.character-showcase::-webkit-scrollbar { display: none; }

.showcase-track {
  display: flex;
  gap: 16px;
  padding: 8px 0;
}

.showcase-card {
  flex-shrink: 0;
  width: 100px;
  text-align: center;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
.showcase-card:hover {
  transform: translateY(-4px) scale(1.05);
}
.showcase-card img {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 16px;
  border: 2px solid var(--border);
  background: var(--card);
}
.showcase-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  letter-spacing: 0.05em;
}

/* ── Feature Tags ────────────────────────────────────────── */
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
  justify-content: center;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  background: var(--card);
}
.tag-icon {
  width: 14px;
  height: 14px;
  stroke: var(--accent);
}

/* Variable aliases to match style.css actual names */
:root {
  --bg: var(--bg-start, #0a0a0f);
  --card: var(--card-bg, rgba(255,255,255,0.05));
  --border: var(--card-border, rgba(255,255,255,0.08));
  --text: var(--text-primary, #e2e8f0);
  --muted: var(--text-secondary, #94a3b8);
  --accent2: var(--secondary, #97b59c);
}

/* ── Intro screen ─────────────────────────────────────────────── */
.intro-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--border);
  background: var(--card-hover);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 24px;
}
.badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.intro-hero {
  max-width: 680px;
  margin: 0 auto;
  padding: 40px 0 60px;
}
.hero-title {
  font-size: clamp(48px, 8vw, 96px);
  line-height: 1.0;
  letter-spacing: -0.04em;
  font-weight: 900;
  margin: 0 0 20px;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 60%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  cursor: pointer;
  user-select: none;
}
.hero-sub {
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 32px;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 32px;
}
.feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card-hover);
  transition: border-color 0.2s, transform 0.2s;
}
.feature-item:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.feature-icon { font-size: 24px; flex-shrink: 0; }
.feature-title { font-size: 14px; font-weight: 700; margin-bottom: 2px; }
.feature-desc { font-size: 12px; color: var(--muted); }

.intro-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.btn-large {
  padding: 14px 32px;
  font-size: 16px;
}
.hint-text {
  font-size: 12px;
  color: var(--muted);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}
.hint-text .feature-lucide {
  width: 16px;
  height: 16px;
}

/* Icon alignment inside buttons */
.btn .feature-lucide {
  width: 16px;
  height: 16px;
  vertical-align: -3px;
  display: inline;
}
.modal-header .feature-lucide {
  width: 20px;
  height: 20px;
  vertical-align: -4px;
  display: inline;
}
.compare-box h3 .feature-lucide {
  width: 20px;
  height: 20px;
  vertical-align: -4px;
  display: inline;
}
.intro-footer {
  text-align: center;
  padding: 24px 0;
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

/* ── Test screen ─────────────────────────────────────────────── */
.progress-fixed {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  padding-top: 8px;
}
.progress-track {
  height: 4px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin: 0 16px 8px;
}
.progress-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px;
  font-size: 13px;
  flex-wrap: wrap;
}
.progress-text {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  color: var(--accent);
  margin-left: auto;
}
.progress-hint {
  color: var(--muted);
  font-size: 12px;
}
.test-shell {
  padding-top: 24px;
}
.question-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-bottom: 24px;
}
.question {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  background: var(--card);
  transition: border-color 0.2s;
}
.question.answered {
  border-color: var(--accent);
  opacity: 0.85;
}
.question-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.badge {
  font-size: 11px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
}
.q-dim {
  font-size: 11px;
  color: var(--muted);
}
.question-title {
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 16px;
  font-weight: 500;
}
.options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.15s;
}
.option:hover { border-color: var(--accent); background: var(--card-hover); }
.option.selected { border-color: var(--accent); background: rgba(99,102,241,0.12); }
.option input[type="radio"] { display: none; }
.option-code {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  background: var(--border);
  font-size: 12px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  flex-shrink: 0;
  transition: background 0.15s, color 0.15s;
}
.option.selected .option-code {
  background: var(--accent);
  color: #fff;
}
.option-label { font-size: 14px; line-height: 1.5; }
.submit-area {
  padding: 32px 0;
  text-align: center;
}
.submit-hint {
  font-size: 12px;
  color: var(--muted);
  margin-top: 8px;
}

/* ── Result screen ───────────────────────────────────────────── */
.result-layout {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding-bottom: 48px;
}
.result-top {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 18px;
  align-items: stretch;
}
.poster-box {
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  background: var(--card);
  display: flex;
  flex-direction: column;
  min-height: 260px;
}
.poster-box.no-image { background: linear-gradient(135deg, rgba(77,106,83,0.08), rgba(108,141,113,0.04)); }
.poster-image {
  width: 100%;
  object-fit: contain;
  max-height: 420px;
}
.poster-box.no-image .poster-image { display: none; }
.poster-caption {
  padding: 14px 16px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}
.type-box {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  background: var(--card);
  display: flex;
  flex-direction: column;
}
.type-kicker {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.type-name {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 14px;
  background: linear-gradient(135deg, var(--text), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.match-badge {
  font-size: 13px;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: 10px;
  background: var(--card-hover);
  border: 1px solid var(--border);
  color: var(--accent);
  margin-bottom: 14px;
  display: inline-block;
}
.type-sub {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 20px;
  flex: 1;
}
.result-share-btns {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.analysis-box h3, .radar-box h3, .dim-box h3, .compare-box h3, .note-box h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 14px;
}
.analysis-box p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--text);
  white-space: pre-wrap;
}

.viz-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 18px;
}
.radar-box, .dim-box {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  background: var(--card);
}
.radar-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}
.radar-wrap canvas {
  max-width: 100%;
  height: auto;
}

.dim-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 480px;
  overflow-y: auto;
  padding-right: 4px;
}
.dim-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  background: var(--bg);
}
.dim-item-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.dim-name { font-size: 12px; font-weight: 700; }
.dim-score {
  font-size: 11px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  padding: 2px 8px;
  border-radius: 6px;
}
.dim-score.level-L { background: rgba(239,68,68,0.15); color: #ef4444; }
.dim-score.level-M { background: rgba(245,158,11,0.15); color: #f59e0b; }
.dim-score.level-H { background: rgba(16,185,129,0.15); color: #10b981; }
.score-bar-wrap {
  height: 6px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
  margin-bottom: 6px;
}
.dim-desc { font-size: 12px; color: var(--muted); line-height: 1.7; margin: 0; }

.compare-box {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  background: var(--card);
}
.muted-text { font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.compare-input-row {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}
.text-input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  outline: none;
  font-family: inherit;
  transition: border-color 0.2s;
}
.text-input:focus { border-color: var(--accent); }
.compare-result { min-height: 20px; }
.compare-card {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
}
.compare-sim {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--accent);
}
.compare-sim strong { font-size: 24px; }

.note-box {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px 20px;
  background: var(--card);
}
.note-box p { font-size: 13px; color: var(--muted); line-height: 1.7; margin: 0; }

.author-box {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--card);
  overflow: hidden;
}
.author-box summary {
  padding: 16px 20px;
  cursor: pointer;
  font-weight: 700;
  font-size: 14px;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.author-box summary::after { content: '▾'; }
.author-box[open] summary::after { content: '▴'; }
.author-content {
  padding: 0 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.author-content p { font-size: 13px; color: var(--muted); line-height: 1.7; margin: 0; }

.result-bottom-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  padding-top: 8px;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  width: 100%;
  max-width: 520px;
  max-height: 80vh;
  overflow-y: auto;
  padding: 24px;
  animation: modalIn 0.3s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.modal-header h3 { font-size: 16px; font-weight: 700; margin: 0; }
.modal-close {
  width: 32px; height: 32px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-close:hover { background: var(--card-hover); color: var(--text); }

/* Responsive */
@media (max-width: 700px) {
  .result-top { grid-template-columns: 1fr; }
  .viz-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .dim-list { max-height: none; overflow-y: visible; }
  .hero-title { font-size: clamp(40px, 12vw, 72px); }
  .intro-hero { padding: 24px 0 40px; }
  .showcase-card { width: 85px; }
  .showcase-card img { width: 85px; height: 85px; }
  .poster-image { max-height: 280px; }
  .radar-wrap canvas { width: 100% !important; height: auto !important; }
  .type-name { font-size: clamp(24px, 6vw, 40px); }
  .compare-input-row { flex-direction: column; }
  .compare-input-row .text-input { width: 100%; }
  .result-share-btns { flex-direction: column; gap: 8px; }
  .result-share-btns .btn { width: 100%; }
  .intro-actions { flex-direction: column; }
  .intro-actions .btn { width: 100%; text-align: center; }
  .progress-info { font-size: 12px; }
  .question-title { font-size: 14px; }
}