/* ---------- Design tokens ---------- */
:root {
  --bg: #FAF7F2;
  --bg-alt: #F1EAE0;
  --ink: #2B2A28;
  --ink-soft: #5B564C;
  --accent: #3F5D4F;
  --accent-warm: #C98A4B;
  --line: #DDD3C4;
  --max: 1040px;
}

* { box-sizing: border-box; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Source Sans 3", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

h1, h2, h3 {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.2;
  margin: 0 0 0.5em;
}

h1 { font-size: 2.4rem; font-weight: 480; }
h2 { font-size: 1.5rem; margin-top: 2.4em; }
h3 { font-size: 1.15rem; margin-top: 1.6em; }

p { margin: 0 0 1.1em; }

a {
  color: var(--accent);
  text-decoration-color: var(--line);
  text-underline-offset: 3px;
}
a:hover { text-decoration-color: var(--accent); }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

ul { padding-left: 1.2em; }
li { margin-bottom: 0.5em; }

/* ---------- Layout shell ---------- */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.nav-row {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.05rem;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

nav.links {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

nav.links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
}

nav.links a[aria-current="page"] {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
}

nav.links a:hover { color: var(--accent); }

main { padding: 56px 0 80px; }

footer.site {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

/* ---------- Hero ---------- */
.hero {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  margin-bottom: 8px;
}

.hero img {
  width: 190px;
  height: 190px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--line);
}

.hero .kicker {
  color: var(--accent-warm);
  font-size: 0.95rem;
  margin-bottom: 6px;
}

.hero h1 { margin-bottom: 2px; }

.hero .role {
  color: var(--ink-soft);
  font-size: 1.05rem;
  margin-bottom: 0;
}

@media (max-width: 560px) {
  .hero { flex-direction: column; }
  .hero img { width: 150px; height: 150px; }
}

/* ---------- Contact row ---------- */
.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 28px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
}

.contact-row a { color: var(--ink); }

/* ---------- Timeline (Education page) ---------- */
.timeline {
  list-style: none;
  padding-left: 0;
  margin-top: 1.5em;
  border-left: 2px solid var(--line);
}

.timeline li {
  position: relative;
  padding: 2px 0 28px 28px;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
}

.timeline .year {
  color: var(--accent-warm);
  font-size: 0.9rem;
  display: block;
  margin-bottom: 2px;
}

.timeline .degree {
  font-weight: 600;
  margin-bottom: 2px;
}

.timeline .school {
  color: var(--ink-soft);
}

/* ---------- Research groups ---------- */
.pub-list { list-style: none; padding-left: 0; }
.pub-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.pub-list li:first-child { padding-top: 0; }
.pub-tag {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 1px 7px;
  margin-bottom: 6px;
}

.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 0; }
.tag-row span {
  background: var(--bg-alt);
  border-radius: 5px;
  padding: 5px 12px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

/* ---------- Course cards (Teaching page) ---------- */
.course {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.course:first-child { padding-top: 0; }
.course h3 { margin: 0 0 4px; }

/* ---------- Callout / student feedback ---------- */
.callout {
  background: var(--bg-alt);
  border-radius: 8px;
  padding: 22px 24px;
  margin: 32px 0;
}
.callout p:last-child { margin-bottom: 0; }

/* ---------- Financial tools ---------- */
.tool-card {
  background: var(--bg-alt);
  border-radius: 8px;
  padding: 24px;
  margin: 24px 0;
}
.tool-card h3 { margin-top: 0; }

.field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 16px 0;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1 1 150px;
}
.field label { font-size: 0.88rem; color: var(--ink-soft); }
.field input {
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--ink);
}
.field input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

button.calc-btn {
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 6px;
  padding: 10px 18px;
  font-size: 0.98rem;
  font-family: inherit;
  cursor: pointer;
}
button.calc-btn:hover { opacity: 0.9; }

.result {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 1.05rem;
  display: none;
}
.result.show { display: block; }
.result .big { font-family: "Fraunces", Georgia, serif; font-size: 1.7rem; color: var(--accent); }

.coming-soon {
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 20px 24px;
  color: var(--ink-soft);
}

/* ---------- Financial Freedom Planning ---------- */
.ffp-intro {
  margin-top: 2.4em;
}

.ffp-subhead {
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.05rem;
  color: var(--accent);
  margin: 0 0 4px;
}

.ffp-note {
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin: 0 0 14px;
}

.link-note {
  display: none;
  color: var(--accent);
  font-size: 0.85rem;
  margin: -8px 0 14px;
}
.link-note.show { display: block; }

select.freq-select {
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--ink);
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 16px 0;
}
@media (max-width: 560px) {
  .compare-grid { grid-template-columns: 1fr; }
}

.compare-col h4 {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 500;
  margin: 0 0 10px;
  color: var(--ink);
}

.compare-result {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin: 6px 0;
}
.compare-result .value {
  font-family: "Fraunces", Georgia, serif;
  color: var(--accent);
}

.chart-wrap {
  margin-top: 20px;
  display: none;
}
.chart-wrap.show { display: block; }
.tool-card canvas {
  width: 100%;
  display: block;
}

.chart-summary {
  display: none;
  margin-top: 10px;
  font-size: 0.92rem;
  color: var(--ink-soft);
}
.chart-summary.show { display: block; }
.chart-summary .value {
  color: var(--accent);
  font-weight: 600;
}

.ffp-download {
  display: inline-block;
  margin-top: 12px;
  padding: 9px 16px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.92rem;
}
.ffp-download:hover { background: var(--accent); color: var(--bg); }

/* ---------- Guided wizard (chat-style) ---------- */
.wizard-toggle-row {
  display: flex;
  gap: 10px;
  margin: 16px 0 24px;
}
.wizard-toggle-btn {
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-family: inherit;
  cursor: pointer;
}
.wizard-toggle-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-alt);
}

.wizard-chat {
  display: none;
  background: var(--bg-alt);
  border-radius: 10px;
  padding: 20px;
}
.wizard-chat.show { display: block; }

.wizard-messages {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
  max-height: 420px;
  overflow-y: auto;
}

.wizard-bubble {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.95rem;
  line-height: 1.5;
}
.wizard-bubble.bot {
  background: var(--bg);
  border: 1px solid var(--line);
  align-self: flex-start;
  border-bottom-left-radius: 3px;
}
.wizard-bubble.user {
  background: var(--accent);
  color: var(--bg);
  align-self: flex-end;
  border-bottom-right-radius: 3px;
}
.wizard-bubble .wizard-hint {
  display: block;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.55;
}

.wizard-input-row {
  display: flex;
  gap: 10px;
}
.wizard-input-row input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--ink);
}
.wizard-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}
.wizard-option-btn {
  padding: 7px 14px;
  border: 1px solid var(--accent);
  border-radius: 20px;
  background: var(--bg);
  color: var(--accent);
  font-size: 0.88rem;
  font-family: inherit;
  cursor: pointer;
}
.wizard-option-btn:hover { background: var(--accent); color: var(--bg); }

.wizard-restart {
  margin-top: 14px;
  background: none;
  border: none;
  color: var(--ink-soft);
  text-decoration: underline;
  font-size: 0.88rem;
  cursor: pointer;
  padding: 0;
}

/* ---------- Mobile nav toggle ---------- */
.nav-toggle { display: none; }

@media (max-width: 640px) {
  .nav-row { flex-wrap: wrap; }
  nav.links { gap: 14px 18px; font-size: 0.92rem; }
}