/* ============================================================
   Handprint Screening Tool — Styles
   Mobile-first, no framework. CSS custom properties for theming.
   ============================================================ */

/* --- Design tokens --- */
:root {
  --color-bg: #fafaf8;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-primary: #2d7a4f;
  --color-primary-light: #e8f5ee;
  --color-primary-dark: #1e5636;
  --color-accent: #f0c040;
  --color-border: #e0ddd8;
  --color-honesty-bg: #fdf6e3;
  --color-honesty-border: #e6d5a8;
  --color-weak-bg: #fff3e0;
  --color-weak-border: #f5c06e;
  --color-stale: #d9534f;
  --color-gap-bg: #f5f0eb;

  --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-hero: clamp(1.5rem, 4vw, 2.25rem);

  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --transition: 300ms ease;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}

/* --- Layout --- */
.container {
  max-width: 640px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
}

/* --- Screen toggling --- */
.screen {
  display: none;
  animation: fadeIn var(--transition) ease;
}

.screen.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Background Spline --- */
.bg-spline {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  pointer-events: none; /* Let clicks pass through to the UI */
  opacity: 0;
  animation: fadeIn 2s ease-in-out forwards;
}

spline-viewer {
  width: 100%;
  height: 100%;
}

/* --- Background Waves --- */
.bg-waves {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100vw;
  height: 40vh; /* Adjust height so waves occupy bottom portion */
  z-index: -1;
  pointer-events: none;
}

.bg-waves svg {
  width: 100%;
  height: 100%;
}

/* --- Intro --- */
.hero-title {
  font-size: var(--font-size-hero);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-lg);
}

.accent {
  font-family: Georgia, "Iowan Old Style", "Palatino Linotype", Palatino, serif;
  font-style: italic;
  font-weight: 400;
  font-size: 1.03em;
}

.intro-text {
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-lg);
  color: var(--color-text);
}

.intro-text p {
  margin-bottom: var(--space-md);
}

.intro-note {
  background: var(--color-honesty-bg);
  border: 1px solid var(--color-honesty-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  margin-bottom: var(--space-xl);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.intro-note p {
  margin: 0;
}

/* --- Buttons --- */
.btn-primary {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: var(--space-sm) var(--space-xl);
  font-size: var(--font-size-lg);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform 0.15s ease;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-primary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  padding: var(--space-xs) var(--space-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.btn-secondary:hover {
  background: var(--color-primary-light);
}

.btn-secondary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* --- Progress bar --- */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  margin-bottom: var(--space-xl);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 3px;
  transition: width var(--transition);
  width: 0%;
}

/* --- Quiz question --- */
.question-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.question-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* Topic multi-select: 2-column grid on wider screens */
.options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

@media (min-width: 480px) {
  .options-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* --- Option buttons --- */
.option-btn {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-base);
  font-family: var(--font-body);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition),
              transform 0.15s ease;
  line-height: 1.4;
}

.option-btn:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.option-btn:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.option-btn:active {
  transform: scale(0.98);
}

.option-btn.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  font-weight: 600;
}

.option-btn.disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* --- Feedback hint --- */
.feedback-line {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary-light);
  border-radius: var(--radius);
  font-size: var(--font-size-sm);
  color: var(--color-primary-dark);
  font-weight: 500;
  animation: fadeIn 200ms ease;
}

/* --- "Weiter" button for multi-select --- */
.next-btn-wrap {
  margin-top: var(--space-lg);
  text-align: center;
}

/* --- Result page --- */
.weak-qualifier {
  background: var(--color-weak-bg);
  border: 1px solid var(--color-weak-border);
  border-radius: var(--radius);
  padding: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.result-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow);
  margin-bottom: var(--space-lg);
}

.result-card h2 {
  font-size: var(--font-size-xl);
  color: var(--color-primary-dark);
  margin-bottom: var(--space-xs);
}

.result-description {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.result-explain {
  font-size: var(--font-size-sm);
  color: var(--color-primary-dark);
  font-style: italic;
  margin-bottom: var(--space-lg);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.result-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.result-meta a {
  color: var(--color-primary);
  text-decoration: none;
}

.result-meta a:hover {
  text-decoration: underline;
}

.result-section-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: var(--space-xs);
  margin-top: var(--space-md);
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: .05em;
}

.result-why p {
  margin-bottom: var(--space-sm);
}

.result-steps {
  list-style: none;
  counter-reset: step-counter;
  padding: 0;
}

.result-steps li {
  counter-increment: step-counter;
  padding: var(--space-xs) 0;
  padding-left: var(--space-lg);
  position: relative;
}

.result-steps li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  width: 24px;
  height: 24px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: 50%;
  text-align: center;
  font-size: var(--font-size-sm);
  font-weight: 700;
  line-height: 24px;
}

/* --- Honesty box --- */
.honesty-box {
  background: var(--color-honesty-bg);
  border: 1px solid var(--color-honesty-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  margin-top: var(--space-lg);
}

.honesty-box h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-sm);
}

.honesty-box p {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.honesty-box .honesty-source {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-style: italic;
}

.honesty-box .honesty-source a {
  color: var(--color-primary);
  text-decoration: none;
}

/* --- Verified date + stale flag --- */
.verified-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-md);
}

.stale-flag {
  color: var(--color-stale);
  font-weight: 600;
}

/* --- Runners-up --- */
.runners-up {
  margin-top: var(--space-xl);
}

.runners-up h3 {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.runner-up-item {
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: var(--space-sm);
  background: white;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.runner-up-item:hover,
.runner-up-item:focus {
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  outline: none;
}

.runner-up-item strong {
  color: var(--color-primary-dark);
}

/* --- Actions row (retake, etc.) --- */
.actions-row {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  flex-wrap: wrap;
  width: 100%;
}

.actions-row > * {
  flex: 1;
  text-align: center;
  min-width: 200px;
}

/* --- Gap page --- */
.gap-page h2 {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.gap-page p {
  margin-bottom: var(--space-md);
  color: var(--color-text-muted);
}

.gap-topic-group {
  margin-bottom: var(--space-lg);
}

.gap-topic-group h3 {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--color-primary-dark);
}

.gap-topic-group li {
  padding: var(--space-xs) 0;
  font-size: var(--font-size-sm);
}

.gap-topic-group ul {
  list-style: none;
  padding: 0;
}

/* --- Footer (About & Credits) --- */
#site-footer {
  margin-top: var(--space-xl);
  padding: var(--space-xl) 0;
}

.about-details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.about-details summary {
  padding: var(--space-md);
  font-weight: 600;
  cursor: pointer;
  background: var(--color-bg);
  transition: background var(--transition);
}

.about-details summary:hover {
  background: var(--color-primary-light);
}

.about-content {
  padding: var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.about-content h3 {
  font-size: var(--font-size-base);
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
  color: var(--color-primary-dark);
}

.about-content h3:first-child {
  margin-top: 0;
}

.about-content p {
  margin-bottom: var(--space-sm);
}

.about-content ul {
  margin-bottom: var(--space-sm);
  padding-left: var(--space-lg);
}

.about-content li {
  margin-bottom: var(--space-xs);
}

.about-content a {
  color: var(--color-primary);
  text-decoration: none;
}

.about-content a:hover {
  text-decoration: underline;
}

/* --- Utility --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}