/*
 * AI tool citation (per CS50 academic honesty policy):
 * Developed with the assistance of Claude Code (Anthropic), models
 * Claude Sonnet 4.6 and Claude Fable 5 — see index.html for details.
 */

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

/* ── Tokens ── */
:root {
  --green:        #2a9d4f;
  --green-dark:   #1e7a3a;
  --green-light:  #e8f5ec;
  --bg:           #ffffff;
  --surface:      #f4f7f5;
  --card:         #eef3f0;
  --card-hover:   #dff0e6;
  --border:       #dde8e1;
  --text:         #111a13;
  --text-muted:   #5c6e60;
  --red:          #d93025;
  --red-bg:       #fdecea;
  --radius:       13px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --green:        #3dbf62;
    --green-dark:   #2a9d4f;
    --green-light:  #1b2e1f;
    --bg:           #111813;
    --surface:      #171f19;
    --card:         #1c2a1f;
    --card-hover:   #233228;
    --border:       #263329;
    --text:         #e2f0e6;
    --text-muted:   #7a9a80;
    --red:          #ff6b6b;
    --red-bg:       #2a1515;
  }
}

/* ── Base ── */
html { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100%;
}

/* ── App shell ── */
#app {
  position: relative;
  min-height: 100dvh;
}

/* ── Screens ── */
.screen {
  position: fixed;
  inset: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: var(--bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 0;
}
.screen.active {
  opacity: 1;
  pointer-events: all;
  z-index: 1;
}

/* ── Start Screen ── */
.screen-inner {
  max-width: 460px;
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
}

.wordmark {
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
}

@media (min-width: 768px) {
  .wordmark { font-size: 1.4rem; }
}

.btn-logo {
  background: transparent;
  border: none;
  padding: 0;
  font-family: inherit;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-logo:hover { opacity: 0.75; }

/* Result screen nav */
.result-nav {
  width: 100%;
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
  flex-shrink: 0;
}

.screen-inner h1 {
  font-size: clamp(1.7rem, 5vw, 2.4rem);
  font-weight: 800;
  line-height: 1.2;
}

.subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.btn-cta {
  margin-top: 0.5rem;
  padding: 0.9rem 2.4rem;
  font-size: 1.1rem;
  font-weight: 700;
  background: var(--green);
  color: #fff;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(42, 157, 79, 0.38);
  transition: background 0.15s, transform 0.1s;
}
.btn-cta:hover  { background: var(--green-dark); transform: translateY(-2px); }
.btn-cta:active { transform: translateY(0); }

.privacy-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 300px;
}

/* ── Legal (Impressum & Datenschutz) ── */
.legal-link {
  font-size: 0.72rem;
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.2rem;
  font-family: inherit;
  text-decoration: underline;
  text-decoration-color: var(--border);
  transition: color 0.15s;
}
.legal-link:hover { color: var(--text); }

.legal-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}
.legal-overlay[hidden] { display: none; }

.legal-box {
  position: relative;
  background: var(--bg);
  border-radius: 16px;
  max-width: 480px;
  width: 100%;
  max-height: 82dvh;
  overflow-y: auto;
  padding: 1.6rem 1.5rem;
}

.legal-box h2 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.legal-box h2:not(:first-of-type) { margin-top: 1.3rem; }

.legal-box p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0.6rem;
}

.legal-box a { color: var(--green); }

.legal-close {
  position: absolute;
  top: 0.8rem;
  right: 0.9rem;
  background: transparent;
  border: none;
  font-size: 1rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.3rem;
}
.legal-close:hover { color: var(--text); }

/* ── Quiz Screen ── */
#screen-quiz {
  justify-content: flex-start;
  padding: 0;
}

.quiz-header {
  width: 100%;
  padding: 1rem 1.5rem 0.6rem;
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}


.progress-track {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--green);
  border-radius: 2px;
  width: 0%;
  transition: width 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ── Quiz footer nav ── */
.quiz-footer {
  position: sticky;
  bottom: 0;
  width: 100%;
  padding: 0.85rem 1.5rem 1.4rem;
  background: var(--bg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-back {
  font-size: 1rem;
  font-weight: 700;
  color: var(--green);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.4rem 0;
  transition: opacity 0.15s;
  visibility: hidden;
}
.btn-back.visible { visibility: visible; }
.btn-back:hover   { opacity: 0.7; }

.btn-skip {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.4rem 0;
  transition: color 0.15s;
}
.btn-skip:hover { color: var(--text); }

.q-wrap {
  flex: 1;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
  min-height: calc(100dvh - 64px);
}

.q-content {
  max-width: 500px;
  width: 100%;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.q-content.q-exit      { opacity: 0; transform: translateX(-22px); }
.q-content.q-enter     { opacity: 0; transform: translateX(22px);  }
.q-content.q-exit-back { opacity: 0; transform: translateX(22px);  }
.q-content.q-enter-back{ opacity: 0; transform: translateX(-22px); }

.q-icon {
  font-size: 2.4rem;
  display: block;
  margin-bottom: 0.65rem;
}

.q-text {
  font-size: clamp(1.25rem, 4vw, 1.85rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.6rem;
}

.q-hint {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: -1.05rem 0 1.5rem;
}

.options {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.option-card {
  display: block;
  width: 100%;
  padding: 0.95rem 1.2rem;
  background: var(--card);
  border: 2px solid transparent;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}

.option-card:hover {
  background: var(--card-hover);
  border-color: var(--green);
}

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

.option-card.selected {
  background: var(--green-light);
  border-color: var(--green);
  color: var(--green);
  font-weight: 600;
  transform: scale(0.98);
}

/* ── Result Screen ── */
#screen-result {
  justify-content: flex-start;
  padding: 0;
}

.result-inner {
  max-width: 520px;
  width: 100%;
  padding: 2.5rem 1.5rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

/* Category result */
.result-top {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.cat-emoji {
  font-size: 3rem;
  line-height: 1;
}

.cat-name {
  font-size: clamp(1.9rem, 7vw, 2.6rem);
  font-weight: 900;
  line-height: 1.1;
}

.cat-desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 340px;
  line-height: 1.5;
}

.cat-green   { color: var(--green); }
.cat-amber   { color: #c97c10; }
.cat-red     { color: var(--red); }
.cat-no-data { color: var(--text-muted); }

@media (prefers-color-scheme: dark) {
  .cat-amber { color: #f0a030; }
}

/* Score bar */
.score-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.score-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.score-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.score-value {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.score-track {
  height: 12px;
  background: var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.score-fill {
  height: 100%;
  border-radius: 6px;
  transition: width 0.9s cubic-bezier(0.4, 0, 0.2, 1);
}

.score-fill.cat-green { background: var(--green); }
.score-fill.cat-amber { background: #d97706; }
.score-fill.cat-red   { background: var(--red); }

.score-context {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-top: 0.5rem;
}
.score-context strong { color: var(--text); }

/* Breakdown */
.breakdown-heading {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
}

.breakdown-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.breakdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.9rem;
  background: var(--surface);
  border-radius: 10px;
  font-size: 0.93rem;
}

.b-icon  { font-size: 1.1rem; flex-shrink: 0; }
.b-label { flex: 1; color: var(--text); }

.breakdown-empty {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 0.5rem 0.25rem;
}

/* Dot indicators */
.dots { display: flex; gap: 4px; flex-shrink: 0; }
.dot  { width: 9px; height: 9px; border-radius: 50%; }
.dot-on  { background: var(--green); }
.dot-off { background: var(--border); }

/* ── Was-wäre-wenn-Simulator ── */
.whatif-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: -0.35rem 0 0.8rem;
}

.whatif-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.whatif-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: var(--surface);
  border: 2px solid transparent;
  border-radius: 10px;
  font-size: 0.93rem;
  font-family: inherit;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
  -webkit-tap-highlight-color: transparent;
}
.whatif-item:hover { border-color: var(--green); }

.w-check {
  width: 18px;
  height: 18px;
  border: 2px solid var(--text-muted);
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: transparent;
  transition: all 0.15s;
}

.whatif-item.selected {
  background: var(--green-light);
  border-color: var(--green);
}
.whatif-item.selected .w-check {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}
.whatif-item.selected .w-check::after { content: '✓'; }

.w-label { flex: 1; }

.w-gain {
  font-weight: 700;
  color: var(--green);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.whatif-result {
  display: none;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 1rem;
  background: var(--surface);
  border-radius: var(--radius);
}
.whatif-result.visible { display: flex; }

.whatif-newcat {
  font-size: 0.95rem;
  color: var(--text);
  margin-top: 0.3rem;
}

.whatif-years {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
}
.whatif-years strong { color: var(--green); }

.whatif-perfect {
  font-size: 0.95rem;
  color: var(--text-muted);
  padding: 0.5rem 0.25rem;
}

/* Actions */
.result-actions {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.btn-secondary {
  flex: 1;
  min-width: 130px;
  padding: 0.8rem 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  background: transparent;
  color: var(--green);
  border: 2px solid var(--green);
  border-radius: 50px;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-secondary:hover { background: var(--green-light); }

/* Disclaimer */
.result-disclaimer {
  font-size: 0.77rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.65;
  padding: 0 0.5rem;
}
.result-disclaimer a {
  color: var(--green);
  text-decoration: none;
}
.result-disclaimer a:hover { text-decoration: underline; }