/* ── Custom properties ────────────────────────────────────────────────── */
:root {
  --bg:          #faf9f7;
  --surface:     #ffffff;
  --surface-2:   #f5f3ef;
  --border:      #e8e3db;
  --border-hover: #c9bfb0;
  --text:        #1c1917;
  --text-muted:  #78716c;
  --accent:      #2563eb;
  --accent-hover: #1d4ed8;
  --accent-dim:  #dbeafe;
  --success:     #16a34a;
  --warn:        #d97706;
  --danger:      #dc2626;
  --radius:      14px;
  --radius-sm:   9px;
  --shadow:      0 1px 4px rgba(0,0,0,0.07), 0 4px 16px rgba(0,0,0,0.04);
  --shadow-hover: 0 2px 8px rgba(0,0,0,0.10), 0 6px 24px rgba(0,0,0,0.07);
  --transition:  0.15s ease;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:          #18181b;
    --surface:     #27272a;
    --surface-2:   #3f3f46;
    --border:      #3f3f46;
    --border-hover: #71717a;
    --text:        #fafafa;
    --text-muted:  #a1a1aa;
    --accent:      #3b82f6;
    --accent-hover: #60a5fa;
    --accent-dim:  #1e3a5f;
    --shadow:      0 1px 4px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.2);
    --shadow-hover: 0 2px 8px rgba(0,0,0,0.4), 0 6px 24px rgba(0,0,0,0.3);
  }
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 3rem 1.25rem 5rem;
  -webkit-font-smoothing: antialiased;
}

#app {
  width: 100%;
  max-width: 640px;
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Intro ───────────────────────────────────────────────────────────── */
.intro-card {
  padding: 3rem 2.5rem;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.intro-eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.intro-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.intro-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.intro-details {
  list-style: none;
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.intro-details li {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-left: 1.2rem;
  position: relative;
}

.intro-details li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--border-hover);
}

.intro-btn { width: 100%; justify-content: center; }

/* ── Progress bar ────────────────────────────────────────────────────── */
.progress-wrap {
  width: 100%;
  height: 3px;
  background: var(--border);
  border-radius: 99px;
  margin-bottom: 2.75rem;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 99px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Question layout ─────────────────────────────────────────────────── */
.q-tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}
.q-text {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.6rem;
  line-height: 1.55;
  letter-spacing: -0.01em;
}
.q-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.6;
}

/* ── Option cards ────────────────────────────────────────────────────── */
.opts-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.option-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  width: 100%;
  padding: 1.1rem 1.3rem;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  text-align: left;
  box-shadow: var(--shadow);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition), background var(--transition);
}
.option-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-hover);
  background: var(--surface-2);
  transform: translateY(-2px);
}
.option-card:active {
  transform: translateY(0);
  box-shadow: var(--shadow);
}
.option-card.selected {
  border-color: var(--accent);
  background: var(--surface-2);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15), var(--shadow-hover);
}
.opt-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.02em;
}
.opt-text {
  font-size: 0.97rem;
  color: var(--text);
  line-height: 1.5;
}

/* ── Scale ───────────────────────────────────────────────────────────── */
.scale-wrap { margin-bottom: 1.75rem; }
.scale-track {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.55rem;
}
.scale-point {
  flex: 1;
  aspect-ratio: 1;
  max-width: 50px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.scale-point:hover {
  border-color: var(--accent);
  background: var(--surface-2);
  transform: translateY(-1px);
}
.scale-point.selected {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.scale-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.76rem;
  color: var(--text-muted);
}

/* ── Rank list ───────────────────────────────────────────────────────── */
.rank-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}
.rank-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.1rem;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: grab;
  user-select: none;
  box-shadow: var(--shadow);
  transition: border-color var(--transition), opacity var(--transition), transform var(--transition);
}
.rank-item:hover { border-color: var(--border-hover); transform: translateY(-1px); }
.rank-item.dragging { opacity: 0.4; border-color: var(--accent); transform: scale(1.01); }
.drag-handle { color: var(--border-hover); font-size: 1rem; cursor: grab; }
.rank-text { font-size: 0.95rem; }

/* ── Buttons ─────────────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 99px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.01em;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover  { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.35; cursor: not-allowed; transform: none; box-shadow: none; }

.choice-next-btn { margin-top: 1.25rem; }

.other-input-wrap { margin-top: 0.75rem; }
.other-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  color: var(--text);
  resize: vertical;
  font-family: inherit;
  box-sizing: border-box;
}
.other-input:focus { outline: none; border-color: var(--accent); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.5rem;
  background: transparent;
  color: var(--text-muted);
  border: 1.5px solid var(--border);
  border-radius: 99px;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.btn-secondary:hover { border-color: var(--border-hover); color: var(--text); }

/* ── Contradiction box ───────────────────────────────────────────────── */
.contra-box {
  padding: 1.1rem 1.3rem;
  border-radius: var(--radius-sm);
  margin-bottom: 2rem;
  border-left: 3px solid var(--warn);
  background: color-mix(in srgb, var(--warn) 7%, var(--surface));
}
.contra-head {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 0.4rem;
  color: var(--warn);
}
.contra-body {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text);
}

/* ── Results ─────────────────────────────────────────────────────────── */
.results-header { margin-bottom: 2.75rem; }
.results-header h1 {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}
.results-sub { color: var(--text-muted); font-size: 0.92rem; }

.results-section { margin-bottom: 2.75rem; }
.results-section h2 {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.1rem;
}

.contra-result { margin-bottom: 0.85rem; }
.contra-probe-answer {
  margin-top: 0.6rem;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.param-bars { display: flex; flex-direction: column; gap: 1.25rem; }
.param-label { font-size: 0.88rem; font-weight: 600; margin-bottom: 0.4rem; }
.param-bar-wrap {
  height: 7px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 0.3rem;
}
.param-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 99px;
  transition: width 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.param-poles {
  display: flex;
  justify-content: space-between;
  font-size: 0.74rem;
  color: var(--text-muted);
}

.results-flags ul { list-style: none; display: flex; flex-direction: column; gap: 0.4rem; }
.results-flags li { font-size: 0.86rem; color: var(--text-muted); }
.flag-name { font-weight: 600; color: var(--text); text-transform: capitalize; }

.results-export { padding-top: 1.25rem; border-top: 1px solid var(--border); }

/* ── Phrase memo ─────────────────────────────────────────────────────── */
.phrase-box {
  margin: 0 0 2.25rem;
  padding: 1.75rem 2rem;
  background: var(--surface-2);
  border: 2px solid var(--border-hover);
  border-radius: var(--radius);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
  text-align: center;
  line-height: 1.5;
  font-style: italic;
  box-shadow: var(--shadow);
}

/* ── Text input ──────────────────────────────────────────────────────── */
.text-input-wrap {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.text-input {
  width: 100%;
  padding: 0.85rem 1.1rem;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  color: var(--text);
  font-family: var(--font);
  outline: none;
  box-shadow: var(--shadow);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.text-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.text-input::placeholder { color: var(--text-muted); }

/* ── Error ───────────────────────────────────────────────────────────── */
.error-screen { padding: 2rem; color: var(--danger); }
.error-screen pre { margin-top: 1rem; font-size: 0.8rem; color: var(--text-muted); }