/* ==========================================================================
   Dr. B. Jagadish — Personal & Academic Website
   Design system: "Manuscript" — scholarly ledger meets Japanese precision
   ========================================================================== */

/* ---------- Design Tokens ---------- */
:root {
  /* Color */
  --ivory:        #F7F4EC;
  --ivory-tint:   #EFEADA;
  --card:         #EDE7D6;
  --ink:          #1C1B19;
  --graphite:     #3D3A34;
  --graphite-60:  rgba(61, 58, 52, 0.62);
  --brass:        #8B6F3D;
  --brass-light:  #C9A961;
  --brass-dark:   #6B5528;
  --hairline:     rgba(28, 27, 25, 0.14);
  --hairline-lt:  rgba(28, 27, 25, 0.08);
  --white:        #FFFDF8;

  /* Type */
  --font-display: 'Fraunces', serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
  --font-accent: 'Cormorant Garamond', serif;
  --font-serif-body: 'Source Serif 4', serif;

  /* Scale */
  --fs-hero:      clamp(2.75rem, 6vw, 5.5rem);
  --fs-h1:        clamp(2.25rem, 4.2vw, 3.6rem);
  --fs-h2:        clamp(1.7rem, 2.6vw, 2.4rem);
  --fs-h3:        clamp(1.25rem, 1.6vw, 1.5rem);
  --fs-lead:      clamp(1.1rem, 1.4vw, 1.35rem);
  --fs-body:      1.0625rem;
  --fs-small:     0.9rem;
  --fs-label:     0.78rem;

  /* Spacing */
  --section-pad:  clamp(5rem, 10vw, 9rem);
  --container-w:  1180px;
  --container-narrow: 780px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 0.3s;
  --dur-med: 0.6s;
  --dur-slow: 0.9s;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

button { font-family: inherit; cursor: pointer; border: none; background: none; }

::selection { background: var(--brass-light); color: var(--ink); }

/* Keyboard focus visibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 3px;
}

/* Skip to content link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--ink);
  color: var(--ivory);
  padding: 0.7rem 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  z-index: 200;
  border-radius: 2px;
  transition: top var(--dur-fast) var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ---------- Utility ---------- */
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.container--narrow { max-width: var(--container-narrow); }

.section {
  padding: var(--section-pad) 0;
  position: relative;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  margin-bottom: 1.25rem;
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--brass);
}

.section-head {
  max-width: 640px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.section-head p {
  margin-top: 1rem;
  color: var(--graphite-60);
  font-size: var(--fs-lead);
  line-height: 1.5;
}

.hairline {
  border: none;
  border-top: 1px solid var(--hairline);
}

/* Reveal-on-scroll base state */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.95rem 1.9rem;
  border-radius: 2px;
  transition: all var(--dur-fast) var(--ease);
  white-space: nowrap;
}

.btn--primary {
  background: var(--ink);
  color: var(--ivory);
}
.btn--primary:hover {
  background: var(--brass-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px -8px rgba(28, 27, 25, 0.35);
}

.btn--outline {
  background: transparent;
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--hairline);
}
.btn--outline:hover {
  box-shadow: inset 0 0 0 1px var(--ink);
  background: rgba(28,27,25,0.03);
}

.btn--light {
  background: var(--brass);
  color: var(--ivory);
}
.btn--light:hover {
  background: var(--brass-light);
  color: var(--ink);
  transform: translateY(-2px);
}

.btn svg { width: 15px; height: 15px; transition: transform var(--dur-fast) var(--ease); }
.btn:hover svg { transform: translateX(3px); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.8rem 0;
  transition: background var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), padding var(--dur-fast) var(--ease);
}

.site-header.is-scrolled {
  background: rgba(247, 244, 236, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--hairline);
  padding: 1rem 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.015em;
  display: inline-flex;
  align-items: baseline;
  transition: opacity var(--dur-fast) var(--ease);
}
.nav__brand:hover {
  opacity: 0.7;
}
.nav__brand span {
  color: var(--brass);
  margin-left: 0.1em;
  transition: color var(--dur-fast) var(--ease);
}
.nav__brand:hover span {
  color: var(--brass-light);
}

.nav__links {
  display: flex;
  gap: clamp(1.4rem, 2.5vw, 2.4rem);
  align-items: center;
}

.nav__links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--graphite);
  position: relative;
  padding-bottom: 4px;
}
.nav__links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--brass);
  transition: width var(--dur-fast) var(--ease);
}
.nav__links a:hover::after { width: 100%; }
.nav__links a.is-active { color: var(--ink); }
.nav__links a.is-active::after { width: 100%; }

.nav__cta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.65rem 1.3rem;
  color: var(--ivory);
  background: var(--brass);
  border: 1px solid var(--brass);
  border-radius: 2px;
  transition: all var(--dur-fast) var(--ease);
}
.nav__cta:hover {
  background: var(--brass-light);
  border-color: var(--brass-light);
}
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav__toggle span {
  width: 22px; height: 1.5px;
  background: var(--ink);
  transition: all var(--dur-fast) var(--ease);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 10rem;
  overflow: hidden;
}

.hero__bg-mark {
  position: absolute;
  top: 50%; right: -8%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: clamp(14rem, 32vw, 30rem);
  font-weight: 300;
  color: var(--ink);
  opacity: 0.035;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
  width: 100%;
}

.hero__eyebrow-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.8rem;
}

.hero__kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.hero h1 em {
  font-style: italic;
  font-weight: 400;
  color: var(--brass-dark);
}

.hero__role {
  margin-top: 1.6rem;
  font-size: var(--fs-lead);
  color: var(--graphite);
  max-width: 520px;
  line-height: 1.55;
}

.hero__actions {
  margin-top: 2.6rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero__stats {
  margin-top: 3.5rem;
  display: flex;
  gap: clamp(1.8rem, 4vw, 3.2rem);
  padding-top: 2.2rem;
  border-top: 1px solid var(--hairline);
}

.hero__stat-num {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 2.6vw, 2.2rem);
  font-weight: 500;
  color: var(--ink);
  display: block;
  line-height: 1;
}

.hero__stat-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--graphite-60);
  margin-top: 0.4rem;
  display: block;
}

/* Portrait panel */
.hero__portrait {
  position: relative;
  aspect-ratio: 3/4;
  border-radius: 3px;
  overflow: hidden;
  background: linear-gradient(160deg, var(--card) 0%, var(--ivory-tint) 100%);
  box-shadow: 0 30px 60px -20px rgba(28,27,25,0.25);
}

.hero__portrait::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--hairline);
  z-index: 3;
  pointer-events: none;
}

.hero__portrait-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  color: var(--graphite-60);
}

.hero__portrait-placeholder svg {
  width: 64px;
  height: 64px;
  opacity: 0.4;
}

.hero__portrait-placeholder span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero__portrait-caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 1.3rem 1.5rem;
  background: linear-gradient(to top, rgba(28,27,25,0.75), transparent);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  z-index: 2;
  opacity: 0.85;
}
.hero__portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero__seal {
  position: absolute;
  top: -1.2rem;
  right: -1.2rem;
  width: 92px;
  height: 92px;
  z-index: 4;
}

.hero__scroll-cue {
  position: absolute;
  bottom: 2.2rem;
  left: clamp(1.5rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--graphite-60);
}

.hero__scroll-line {
  width: 1px;
  height: 34px;
  background: var(--hairline);
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 40%;
  background: var(--brass);
  animation: scrollLine 2.2s var(--ease) infinite;
}
@keyframes scrollLine {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(250%); }
}

/* ---------- Credentials strip ---------- */
.credentials {
  background: var(--ink);
  padding: 2.4rem 0;
}
.credentials__row {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.8rem 0;
}
.credentials__item {
  color: rgba(247, 244, 236, 0.6);
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.01em;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0 1.8rem;
  border-left: 1px solid rgba(247, 244, 236, 0.15);
}
.credentials__row {
  padding-left: 1.8rem;
  border-left: 1px solid rgba(247, 244, 236, 0.15);
}
.credentials__item strong {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--brass-light);
  letter-spacing: 0.01em;
}

/* ---------- About / Bio ---------- */
.about {
  background: var(--ivory);
}
.about__grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}

.about__portrait-col {
  position: sticky;
  top: 7rem;
}
.about__frame-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about__frame {
  aspect-ratio: 4/5;
  background: var(--card);
  border: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.about__frame svg { width: 56px; height: 56px; opacity: 0.35; }
.about__frame-label {
  position: absolute;
  bottom: 1.2rem;
  left: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--graphite-60);
}

.about__quote-block {
  margin-top: 1.8rem;
  padding: 1.6rem 0 0;
  border-top: 1px solid var(--hairline);
}
.about__quote-block p {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.15rem;
  line-height: 1.5;
  color: var(--brass-dark);
}
.about__quote-block cite {
  display: block;
  margin-top: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--graphite-60);
  font-style: normal;
}

.about__content p {
  font-family: var(--font-serif-body);
  color: var(--graphite);
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 1.3rem;
}
.about__content p:first-of-type {
  font-size: 1.2rem;
  color: var(--ink);
  font-family: var(--font-serif-body);
  line-height: 1.7;
}

.about__lede-cap {
  font-family: var(--font-display);
  font-size: 3.2rem;
  line-height: 0.8;
  float: left;
  margin-right: 0.5rem;
  color: var(--brass);
  font-weight: 500;
}


/* ---------- Journey / Career Timeline (chapters) ---------- */
.journey {
  background: var(--ivory-tint);
}

.journey__list {
  margin-top: 1rem;
}

.chapter {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: clamp(1.5rem, 3vw, 3rem);
  padding: 3.2rem 0;
  border-top: 1px solid var(--hairline);
  position: relative;
}
.chapter:last-child { border-bottom: 1px solid var(--hairline); }

.chapter__num {
  font-family: var(--font-display);
  font-size: 3.4rem;
  font-weight: 400;
  color: var(--brass-light);
  line-height: 1;
  padding-top: 0;
}
.chapter__period {
  display: block;
  margin-top: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--graphite-60);
  letter-spacing: 0.03em;
}

.chapter__body {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
}
.chapter__body-full {
  max-width: 640px;
}
.chapter__title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 0.6rem;
  line-height: 1.3;
}

.chapter__desc {
  font-family: var(--font-serif-body);
  color: var(--graphite);
  font-size: 1.02rem;
  line-height: 1.7;
}

.chapter__outcomes {
  border-left: 1px solid var(--hairline);
  padding-left: 1.6rem;
}
.chapter__outcomes li {
  font-size: 0.92rem;
  color: var(--graphite);
  padding-left: 1.1rem;
  position: relative;
  margin-bottom: 0.55rem;
  line-height: 1.5;
}
.chapter__outcomes li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.55em;
  width: 5px; height: 5px;
  background: var(--brass);
  border-radius: 50%;
}

.chapter:hover .chapter__title { color: var(--brass-dark); }
.chapter__title { transition: color var(--dur-fast) var(--ease); }

/* ---------- Impact stats band ---------- */
.impact {
  background: var(--ivory);
  color: var(--ink);
  position: relative;
}

.impact__head { max-width: 640px; }

.impact__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  margin-top: 3rem;
}
.impact__cell {
  background: var(--ivory-tint);
  padding: 2.4rem 1.8rem;
  transition: background var(--dur-fast) var(--ease);
}
.impact__cell:hover { background: var(--white); }
.impact__num {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 3.4vw, 3rem);
  font-weight: 500;
  color: var(--ink);
  line-height: 1;
}
.impact__label {
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  color: var(--graphite-60);
  line-height: 1.4;
}
/* ---------- Featured Book: Omotenashi ---------- */
.featured-book {
  background: var(--card);
}
.featured-book__seal-top {
  display: block;
  width: 64px;
  height: 64px;
  color: var(--brass);
  margin: 0 auto 2.5rem;
}
.featured-book__mark {
  width: 44px;
  height: 44px;
  color: var(--brass);
  margin-bottom: 1.2rem;
}
.featured-book__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: center;
}

.featured-book__image {
  position: relative;
}
.featured-book__img {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 30px 60px -20px rgba(28, 27, 25, 0.3);
}

.featured-book__content h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  color: var(--ink);
  line-height: 1.1;
}

.featured-book__tagline {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--brass-dark);
}

.featured-book__desc {
  margin-top: 1.6rem;
  max-width: 480px;
  color: var(--graphite);
  font-size: 1.02rem;
  line-height: 1.75;
}
.featured-book__desc em {
  font-style: italic;
  color: var(--ink);
}

.featured-book__meta {
  margin-top: 1.8rem;
  display: flex;
  gap: 1.8rem;
  flex-wrap: wrap;
  padding: 1.2rem 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.featured-book__meta span {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--graphite-60);
}

.featured-book__actions {
  margin-top: 2rem;
  display: flex;
  align-items: center;
  gap: 1.6rem;
  flex-wrap: wrap;
}

/* ---------- Books / Publications ---------- */
.books {
  background: var(--ivory);
}

.books__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1.8rem;
  margin-top: 1rem;
}

.book-card {
  position: relative;
}

.book-card__cover {
  aspect-ratio: 3/4.3;
  background: linear-gradient(155deg, var(--brass-dark) 0%, var(--ink) 100%);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 18px 34px -14px rgba(28,27,25,0.3);
  transition: transform var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.6rem 1.4rem;
}

.book-card:hover .book-card__cover {
  transform: translateY(-8px);
  box-shadow: 0 28px 44px -16px rgba(28,27,25,0.4);
}

.book-card__cover::after {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 10px;
  background: rgba(0,0,0,0.18);
}

.book-card__year {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--brass-light);
}

.book-card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--ivory);
  line-height: 1.3;
  margin-top: auto;
}

.book-card__desc {
  margin-top: 0.9rem;
  font-size: 0.86rem;
  color: var(--graphite-60);
  line-height: 1.5;
}

.pub-summary {
  margin-top: 3.5rem;
  padding-top: 2.2rem;
  border-top: 1px solid var(--hairline);
  max-width: 640px;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  color: var(--graphite);
  font-size: 1.15rem;
  line-height: 1.65;
}

/* ---------- Philosophy (seal / pull-quote) ---------- */
.philosophy {
  background: var(--card);
  text-align: center;
  position: relative;
}

.philosophy__mark {
  width: 74px;
  height: 74px;
  margin: 0 auto 2rem;
  color: var(--brass);
}

.philosophy blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.4vw, 2.6rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.35;
  color: var(--ink);
  max-width: 820px;
  margin: 0 auto;
}

.philosophy__attribution {
  margin-top: 1.8rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--graphite-60);
}

.philosophy__sub {
  max-width: 640px;
  margin: 2.5rem auto 0;
  color: var(--graphite);
  font-size: 1rem;
  line-height: 1.7;
}

/* ---------- Awards / Recognitions ---------- */
.awards { background: var(--ivory-tint); }

.awards__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}

.award-card {
  background: var(--ivory);
  padding: 2rem 2rem;
  transition: background var(--dur-fast) var(--ease);
}
.award-card:hover { background: var(--white); }

.award-card__year {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--brass);
}

.award-card__title {
  margin-top: 0.7rem;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.4;
}

/* ---------- National contribution / affiliations ---------- */
.affiliations { background: var(--ivory); }

.affil-list {
  display: flex;
  flex-direction: column;
}
.affil-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  padding: 1.9rem 0;
  border-top: 1px solid var(--hairline);
}
.affil-list > .affil-item:last-child { border-bottom: 1px solid var(--hairline); }
.affil-item__role {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--brass-dark);
  line-height: 1.5;
}
.affil-item__desc {
  color: var(--graphite);
  font-size: 0.98rem;
  line-height: 1.6;
}
.affil-item__desc strong { color: var(--ink); font-weight: 600; }

/* ---------- Education & certifications ---------- */
.credentials-section { background: var(--ivory-tint); }

.cred-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--hairline);
}
.cred-tab {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.9rem 0.3rem;
  margin-right: 1.8rem;
  color: var(--graphite-60);
  position: relative;
  transition: color var(--dur-fast) var(--ease);
}
.cred-tab::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 2px;
  background: var(--brass);
  transform: scaleX(0);
  transition: transform var(--dur-fast) var(--ease);
}
.cred-tab.is-active { color: var(--ink); }
.cred-tab.is-active::after { transform: scaleX(1); }

.cred-panel { display: none; }
.cred-panel.is-active { display: block; }

.cred-row {
  display: grid;
  grid-template-columns: 90px 1fr 240px;
  gap: 1.5rem;
  align-items: baseline;
  padding: 1.3rem 0;
  border-top: 1px solid var(--hairline);
}
.cred-row:last-child { border-bottom: 1px solid var(--hairline); }
.cred-row__year {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--brass);
}
.cred-row__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--ink);
  font-weight: 500;
}
.cred-row__remark {
  font-size: 0.85rem;
  color: var(--graphite-60);
}
.cred-row__inst {
  font-size: 0.88rem;
  color: var(--graphite);
  text-align: right;
}

/* ---------- Media / speaking gallery ---------- */
.gallery { background: var(--ivory); }

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 220px);
  gap: 0.6rem;
}
.gallery__grid > :nth-child(1) { grid-column: span 2; grid-row: span 2; }
.gallery__grid > :nth-child(4) { grid-column: span 2; }

.gallery__item {
  background: var(--card);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--hairline);
}
.gallery__item svg { width: 34px; height: 34px; opacity: 0.3; }
.gallery__item span {
  position: absolute;
  bottom: 0.9rem;
  left: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--graphite-60);
}

/* ---------- Vision / CTA ---------- */
.vision {
  background: var(--ink);
  color: var(--ivory);
}
.vision__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}
.vision__list li {
  padding: 1.4rem 0;
  border-top: 1px solid rgba(247,244,236,0.14);
  display: flex;
  gap: 1.2rem;
  align-items: baseline;
}
.vision__list li:last-child { border-bottom: 1px solid rgba(247,244,236,0.14); }
.vision__list-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--brass-light);
  flex-shrink: 0;
}
.vision__list-text {
  font-size: 1rem;
  line-height: 1.6;
  color: rgba(247,244,236,0.85);
}

.contact-panel {
  background: rgba(247,244,236,0.05);
  border: 1px solid rgba(247,244,236,0.14);
  padding: clamp(2rem, 4vw, 3rem);
}
.contact-panel h3 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 500;
  color: var(--ivory);
  margin-bottom: 0.8rem;
}
.contact-panel p {
  color: rgba(247,244,236,0.6);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 2rem;
}
.contact-emails {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  margin-bottom: 2.2rem;
  padding-bottom: 2.2rem;
  border-bottom: 1px solid rgba(247, 244, 236, 0.14);
}

.contact-email {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  transition: opacity var(--dur-fast) var(--ease);
}
.contact-email:hover {
  opacity: 0.75;
}

.contact-email__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(247, 244, 236, 0.5);
}

.contact-email__address {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--brass-light);
  position: relative;
  width: fit-content;
}
.contact-email__address::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 1px;
  background: rgba(201, 169, 97, 0.3);
  transition: background var(--dur-fast) var(--ease);
}
.contact-email:hover .contact-email__address::after {
  background: var(--brass-light);
}
.form-row { margin-bottom: 1.3rem; }
.form-row label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(247,244,236,0.5);
  margin-bottom: 0.6rem;
}
.form-row input,
.form-row textarea,
.form-row select {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(247,244,236,0.25);
  color: var(--ivory);
  font-family: var(--font-body);
  font-size: 0.98rem;
  padding: 0.6rem 0;
  transition: border-color var(--dur-fast) var(--ease);
}
.form-row select option { color: var(--ink); }
.form-row input:focus,
.form-row textarea:focus,
.form-row select:focus {
  outline: none;
  border-bottom-color: var(--brass-light);
}
.form-row textarea { resize: vertical; min-height: 80px; }

.form-row input::placeholder,
.form-row textarea::placeholder { color: rgba(247,244,236,0.3); }

.form-submit {
  margin-top: 0.5rem;
  width: 100%;
  justify-content: center;
}

.form-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--brass-light);
  display: none;
}
.form-note.is-visible { display: block; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  border-top: 1px solid rgba(247,244,236,0.1);
  padding: 3rem 0 2rem;
}
.footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 2rem;
  padding-bottom: 2.4rem;
  border-bottom: 1px solid rgba(247,244,236,0.1);
}
.footer__brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--ivory);
}
.footer__brand span { color: var(--brass-light); }
.footer__tag {
  margin-top: 0.8rem;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.95rem;
  color: rgba(247, 244, 236, 0.55);
  max-width: 300px;
  line-height: 1.55;
}

.footer__cols {
  display: flex;
  gap: clamp(2rem, 5vw, 4.5rem);
}
.footer__col h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brass-light);
  margin-bottom: 1rem;
}
.footer__col a, .footer__col p {
  display: block;
  font-size: 0.85rem;
  color: rgba(247,244,236,0.6);
  margin-bottom: 0.7rem;
  transition: color var(--dur-fast) var(--ease);
}
.footer__col a:hover { color: var(--ivory); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: rgba(247,244,236,0.35);
}
.footer__credit {
     display: inline-flex;
     align-items: center;
     gap: 0.6rem;
   }
   .footer__credit-mark {
     width: 26px;
     height: 26px;
     opacity: 0.85;
   }

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--ivory);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--dur-fast) var(--ease);
  z-index: 90;
  box-shadow: 0 8px 20px -6px rgba(28,27,25,0.4);
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--brass-dark); }
.back-to-top svg { width: 18px; height: 18px; }

/* ---------- Mobile nav ---------- */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--ivory);
  z-index: 99;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 2rem clamp(1.5rem, 4vw, 3rem);
  transform: translateX(100%);
  transition: transform var(--dur-med) var(--ease);
}
.mobile-nav.is-open { transform: translateX(0); }
.mobile-nav a {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 500;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--hairline);
  color: var(--ink);
}
.mobile-nav__close {
  position: absolute;
  top: 1.6rem;
  right: clamp(1.5rem, 4vw, 3rem);
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mobile-nav__close svg { width: 22px; height: 22px; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__portrait { max-width: 380px; margin: 0 auto; }
  .about__grid { grid-template-columns: 1fr; }
  .featured-book__grid { grid-template-columns: 1fr; }
.featured-book__image { max-width: 420px; margin: 0 auto; }
  .about__portrait-col { position: static; max-width: 340px; }
  .chapter__body { grid-template-columns: 1fr; }
  .chapter__outcomes { border-left: none; padding-left: 0; border-top: 1px solid var(--hairline); padding-top: 1.2rem; margin-top: 0.4rem; }
  .vision__grid { grid-template-columns: 1fr; }
  .gallery__grid { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(3, 200px); }
  .gallery__grid > :nth-child(1) { grid-column: span 2; grid-row: span 1; }
}

@media (max-width: 768px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }

  .hero__stats { flex-wrap: wrap; gap: 1.6rem 2.4rem; }

  .credentials__row { justify-content: flex-start; gap: 1.6rem 2.2rem; }

  .chapter { grid-template-columns: 60px 1fr; }


  

  .affil-item { grid-template-columns: 1fr; gap: 0.6rem; }

  .cred-row { grid-template-columns: 1fr; gap: 0.3rem; }
  .cred-row__inst { text-align: left; }

  .footer__top { flex-direction: column; }
  .footer__cols { gap: 2.5rem; flex-wrap: wrap; }

}

@media (max-width: 560px) {
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { justify-content: center; }
  .gallery__grid { grid-template-columns: 1fr; grid-template-rows: repeat(4, 200px); }
  .gallery__grid > :nth-child(1), .gallery__grid > :nth-child(4) { grid-column: span 1; grid-row: span 1; }
  .credentials__row { flex-direction: column; gap: 1rem; }
  .section { padding: 4rem 0; }
}