@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;600&family=Space+Grotesk:wght@400;600;700&display=swap");

:root {
  color-scheme: light;
  --bg: #f6f3eb;
  --bg-ink: #101010;
  --ink: #1e1b1a;
  --muted: #5a5451;
  --accent: #ff7a18;
  --accent-2: #1877f2;
  --card: #ffffff;
  --shadow: 0 18px 50px rgba(16, 16, 16, 0.15);
  --radius: 20px;
}

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

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  background: radial-gradient(circle at top, #fff4d8 0%, #f6f3eb 42%, #f0e9dd 100%);
  color: var(--ink);
  min-height: 100vh;
  position: relative;
}

.auth-locked .site-header,
.auth-locked .layout,
.auth-locked .footer {
  display: none;
}

.ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 12% 10%, rgba(255, 122, 24, 0.2), transparent 35%),
    radial-gradient(circle at 82% 16%, rgba(24, 119, 242, 0.15), transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(19, 174, 112, 0.12), transparent 45%);
  z-index: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 8vw;
  backdrop-filter: blur(12px);
  background: rgba(246, 243, 235, 0.8);
  border-bottom: 1px solid rgba(30, 27, 26, 0.08);
}

.logo {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.nav {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 999px;
  transition: all 0.2s ease;
}

.nav a.active,
.nav a:hover {
  background: var(--ink);
  color: #fff;
}

.layout {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 32px 8vw 64px;
}

.panel {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.hero {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.75rem;
  color: var(--accent);
  font-family: "IBM Plex Mono", monospace;
}

h1 {
  font-size: clamp(2rem, 3vw, 3rem);
  margin: 10px 0 12px;
}

.lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 560px;
}

.hero-stats {
  display: grid;
  gap: 16px;
  min-width: 220px;
}

.stat-card {
  border-radius: 16px;
  padding: 16px;
  background: #fef7ea;
  border: 1px solid rgba(255, 122, 24, 0.2);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stat-card strong {
  font-size: 1.4rem;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.resume-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid rgba(30, 27, 26, 0.1);
  background: #fff7ed;
}

.resume-status {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.9rem;
}

.login-form {
  display: grid;
  gap: 16px;
  max-width: 420px;
}

.form-error {
  color: #c1272d;
  font-weight: 600;
}

.form-feedback {
  color: var(--muted);
  font-weight: 600;
}

.question-panel .question-body {
  display: grid;
  gap: 18px;
}

.answer-form {
  display: grid;
  gap: 16px;
}

.completion-panel {
  display: none;
  text-align: center;
}

.control-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

input,
select {
  border-radius: 12px;
  border: 1px solid rgba(30, 27, 26, 0.2);
  padding: 10px 12px;
  font-size: 0.95rem;
  font-family: inherit;
}

button {
  border: none;
  cursor: pointer;
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-family: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button.primary {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 10px 20px rgba(30, 27, 26, 0.2);
}

button.secondary {
  background: #f0e9dd;
  color: var(--ink);
}

button:hover {
  transform: translateY(-2px);
}

.topic-grid,
.question-grid,
.formula-grid,
.pill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.topic-card,
.question-card,
.formula-card,
.pill-card {
  padding: 16px;
  border-radius: 16px;
  background: #fdfcf9;
  border: 1px solid rgba(30, 27, 26, 0.08);
}

.topic-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.topic-card label {
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.section-header p {
  color: var(--muted);
}

.question-card {
  display: grid;
  gap: 12px;
}

.question-card h3 {
  margin: 0;
  font-size: 1.1rem;
}

.question-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.answer {
  font-family: "IBM Plex Mono", monospace;
  background: #1e1b1a;
  color: #fff;
  padding: 10px 12px;
  border-radius: 10px;
  display: none;
}

.answer.visible {
  display: block;
}

.mono {
  font-family: "IBM Plex Mono", monospace;
}

.formula-card {
  display: grid;
  gap: 12px;
}

.formula-card h3 {
  margin-top: 0;
}

.formula-item {
  padding: 10px 0;
  border-top: 1px solid rgba(30, 27, 26, 0.08);
  display: grid;
  gap: 6px;
}

.formula-item:first-of-type {
  border-top: none;
}

.help-link {
  color: var(--accent-2);
  text-decoration: none;
  font-weight: 600;
}

.help-link:hover {
  text-decoration: underline;
}

.learner-list {
  display: grid;
  gap: 12px;
}

.learner-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid rgba(30, 27, 26, 0.1);
  background: #fff;
}

.learner-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  background: #f0e9dd;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.note-panel {
  background: #fff7ed;
  border: 1px dashed rgba(255, 122, 24, 0.4);
}

.doc-card {
  padding: 20px;
  border-radius: 18px;
  border: 1px solid rgba(30, 27, 26, 0.1);
  background: #fff;
  margin-bottom: 18px;
}

.doc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.doc-body {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.doc-body ol {
  padding-left: 18px;
  margin: 0;
  color: var(--muted);
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 24px;
}

@media (max-width: 720px) {
  .site-header {
    flex-direction: column;
    gap: 12px;
  }

  .nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    flex-direction: column;
    align-items: flex-start;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
}