:root {
  --bg: #f0ecf6;
  --paper: #f8f5ff;
  --ink: #1a1525;
  --muted: #6b5f7a;
  --line: #cfc4e0;
  --accent: #7c3aed;
  --accent-dark: #5b21b6;
  --success: #255f46;
  --shadow: 0 20px 60px rgba(45, 20, 80, 0.12);
  --radius: 22px;
  --font-display: Georgia, "Times New Roman", serif;
  --font-body: "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(124, 58, 237, 0.14), transparent 30%),
    linear-gradient(180deg, #ebe5f5 0%, var(--bg) 100%);
  font-family: var(--font-body);
}

.site-shell,
.questionnaire-shell {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.hero {
  display: grid;
  gap: 24px;
  padding: 28px;
  background: rgba(248, 245, 255, 0.86);
  border: 1px solid rgba(91, 33, 182, 0.14);
  border-radius: 32px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--accent-dark);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.02;
}

h1 {
  font-size: clamp(2.4rem, 9vw, 5rem);
  max-width: 12ch;
}

.lede {
  max-width: 56ch;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero-grid,
.panel-grid {
  display: grid;
  gap: 18px;
}

.hero-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.panel-grid {
  margin-top: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.panel,
.questionnaire-card,
.job-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel,
.job-card {
  padding: 20px;
}

.questionnaire-card {
  padding: 24px;
  max-width: 760px;
  margin: 32px auto 0;
}

.kicker {
  font-size: 0.92rem;
  color: var(--accent-dark);
}

ul.clean {
  padding-left: 18px;
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.operator-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 28px;
}

.button,
button {
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  padding: 12px 18px;
  font: inherit;
  cursor: pointer;
}

.button.secondary,
button.secondary {
  background: rgba(124, 58, 237, 0.12);
  color: var(--accent-dark);
}

a.button {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.jobs {
  display: grid;
  gap: 16px;
  margin-top: 16px;
}

.job-card h3 {
  font-size: 1.45rem;
  margin-bottom: 8px;
}

.meta {
  color: var(--muted);
  font-size: 0.92rem;
}

.auth-box,
.question-block,
.status-banner {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #faf8ff;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
}

input[type="text"],
input[type="password"],
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  background: #f9f7ff;
  color: var(--ink);
  font: inherit;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.radio-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.pill-option {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  background: #ede8f5;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.status-banner {
  color: var(--success);
  background: rgba(37, 95, 70, 0.08);
}

.error {
  color: #8c1d18;
  margin-top: 10px;
}

code {
  font-family: Consolas, monospace;
  background: rgba(91, 33, 182, 0.08);
  padding: 2px 6px;
  border-radius: 6px;
}

/* --- Research Summary --- */

.research-title {
  font-size: clamp(1.8rem, 6vw, 3rem);
  max-width: 20ch;
}

.research-list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.research-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #faf8ff;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.research-card:hover {
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.1);
}

.research-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
}

.research-number {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
}

.research-text {
  flex: 1;
  min-width: 0;
}

.research-card-title {
  font-size: 1.05rem;
  line-height: 1.3;
  margin-bottom: 4px;
}

.research-summary {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.research-toggle {
  flex-shrink: 0;
  color: var(--accent);
  font-size: 1.4rem;
  line-height: 1;
  font-weight: 300;
}

.research-detail {
  padding: 0 18px 16px 60px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

.research-detail p {
  margin: 0 0 6px;
}

.research-source {
  font-size: 0.78rem;
  color: var(--accent-dark);
  opacity: 0.7;
}

/* --- One-at-a-Time Question Flow --- */

.question-solo {
  min-height: 50vh;
  display: flex;
  flex-direction: column;
}

.progress-bar {
  height: 4px;
  background: var(--line);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 24px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  border-radius: 2px;
  transition: width 0.4s ease;
}

.question-counter {
  margin: 0 0 20px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.question-prompt {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 3.5vw, 1.35rem);
  line-height: 1.65;
  color: var(--accent-dark);
  min-height: 4em;
  margin-bottom: 28px;
}

.question-input {
  flex: 1;
  transition: opacity 0.5s ease;
}

.question-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
}

.questionnaire-card {
  position: relative;
}

.qr-corner {
  position: absolute;
  top: 20px;
  right: 20px;
  text-align: center;
}

.qr-corner img {
  border-radius: 10px;
  border: 2px solid rgba(124, 58, 237, 0.15);
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.1);
}

.qr-hint {
  display: block;
  margin-top: 6px;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

@media (max-width: 640px) {
  .site-shell,
  .questionnaire-shell {
    width: min(100% - 20px, 1080px);
    padding-top: 20px;
  }

  .hero,
  .questionnaire-card {
    padding: 18px;
    border-radius: 24px;
  }

  .qr-corner {
    display: none;
  }
}