/* =====================================================
   PORTFOLIO — styles.css
   Aesthetic: Refined dark + saffron warmth
   Fonts: Playfair Display (headings) + DM Sans (body)
   ===================================================== */

/* ── CSS Variables ── */
:root {
  --clr-bg:         #0f0e0d;       /* near-black warm */
  --clr-bg-2:       #161411;       /* cards on dark bg */
  --clr-bg-light:   #f7f4ef;       /* light section bg */
  --clr-bg-warm:    #fdf6ec;       /* warm section bg  */
  --clr-accent:     #e8924a;       /* saffron           */
  --clr-accent-2:   #c9733d;       /* deeper saffron    */
  --clr-gold:       #d4a848;       /* gold detail       */
  --clr-text:       #1a1714;       /* dark body text    */
  --clr-text-inv:   #e8e3db;       /* light text on dark */
  --clr-text-muted: #7a7269;       /* muted text        */
  --clr-border:     rgba(232,146,74,.18);
  --clr-border-light: rgba(26,23,20,.1);

  --font-display:   'Playfair Display', Georgia, serif;
  --font-body:      'DM Sans', sans-serif;
  --font-mono:      'DM Mono', monospace;

  --radius-sm:   6px;
  --radius-md:   14px;
  --radius-lg:   24px;
  --radius-pill: 999px;

  --shadow-card: 0 4px 24px rgba(0,0,0,.22), 0 1px 4px rgba(0,0,0,.1);
  --shadow-lift: 0 8px 40px rgba(0,0,0,.3);

  --transition: .28s cubic-bezier(.4,0,.2,1);
  --nav-h: 70px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--clr-bg-light);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── Utility ── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn--primary {
  background: var(--clr-accent);
  color: #fff;
  box-shadow: 0 4px 20px rgba(232,146,74,.35);
}
.btn--primary:hover {
  background: var(--clr-accent-2);
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(232,146,74,.45);
}
.btn--ghost {
  background: transparent;
  color: var(--clr-text-inv);
  border-color: rgba(255,255,255,.3);
}
.btn--ghost:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  transform: translateY(-2px);
}
.btn--outline-light {
  background: transparent;
  color: var(--clr-text-inv);
  border-color: rgba(255,255,255,.4);
}
.btn--outline-light:hover {
  background: rgba(255,255,255,.08);
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  transform: translateY(-2px);
}
.text-link {
  color: var(--clr-accent);
  font-size: .88rem;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.text-link:hover { color: var(--clr-accent-2); gap: 8px; }

/* ── Reveal animation ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ======================================================
   NAVIGATION
====================================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: transparent;
  transition: background .3s, box-shadow .3s, backdrop-filter .3s;
}
.nav.scrolled {
  background: rgba(15,14,13,.92);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(255,255,255,.06);
}
.nav__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--clr-text-inv);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
}
.nav__logo-initials {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--clr-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  font-weight: 700;
  font-family: var(--font-display);
  flex-shrink: 0;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav__link {
  color: rgba(232,227,219,.75);
  font-size: .875rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  transition: var(--transition);
}
.nav__link:hover, .nav__link.active {
  color: #fff;
  background: rgba(255,255,255,.08);
}
.nav__link--cta {
  background: var(--clr-accent);
  color: #fff !important;
  padding: 7px 18px;
}
.nav__link--cta:hover { background: var(--clr-accent-2); }

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-text-inv);
  border-radius: 2px;
  transition: var(--transition);
}

/* ======================================================
   HERO
====================================================== */
.hero {
  min-height: 100vh;
  background: var(--clr-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + 60px) 24px 80px;
  position: relative;
  overflow: hidden;
}

/* Subtle grid pattern background */
.hero__bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(232,146,74,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232,146,74,.04) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
  pointer-events: none;
}

/* Glow blobs */
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(232,146,74,.1) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(212,168,72,.07) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  text-align: center;
  max-width: 720px;
  position: relative;
  z-index: 1;
}
.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--clr-accent);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.hero__name {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800;
  color: var(--clr-text-inv);
  line-height: 1.06;
  margin-bottom: 18px;
  /* Gradient on the name for flair */
  background: linear-gradient(135deg, #f0e6d3 0%, #e8924a 60%, #d4a848 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__roles {
  height: 36px;
  margin-bottom: 22px;
}
#roleCycler {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.3rem;
  color: var(--clr-text-muted);
  transition: opacity .35s;
}
.hero__tagline {
  font-size: 1.08rem;
  color: rgba(232,227,219,.65);
  line-height: 1.75;
  margin-bottom: 36px;
}
.hero__actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

/* Three identity cards in hero */
.hero__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 860px;
  width: 100%;
  position: relative;
  z-index: 1;
}
.identity-card {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  text-align: center;
  color: var(--clr-text-inv);
  transition: var(--transition);
  cursor: pointer;
}
.identity-card:hover {
  transform: translateY(-6px);
  border-color: var(--clr-accent);
  background: rgba(232,146,74,.07);
}
.identity-card__icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
  display: block;
  color: var(--clr-accent);
}
.identity-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.identity-card p {
  font-size: .82rem;
  color: rgba(232,227,219,.5);
  line-height: 1.5;
}
.identity-card--ml .identity-card__icon  { color: #7dc4e4; }
.identity-card--teach .identity-card__icon { color: var(--clr-gold); }
.identity-card--travel .identity-card__icon { color: #a3c87d; }

/* Scroll hint */
.hero__scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: rgba(232,227,219,.3);
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}
.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(232,146,74,.5), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%, 100% { opacity: .5; transform: scaleY(1); }
  50%       { opacity: 1;  transform: scaleY(.6); }
}

/* ======================================================
   SECTIONS — shared
====================================================== */
.section {
  padding: 100px 0;
  background: var(--clr-bg-light);
}
.section--dark {
  background: var(--clr-bg);
  color: var(--clr-text-inv);
}
.section--warm {
  background: var(--clr-bg-warm);
}
.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}
.section__label {
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 12px;
  display: block;
}
.section__label--light { color: var(--clr-accent); }
.section__heading {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  font-weight: 700;
  line-height: 1.18;
  color: var(--clr-text);
  margin-bottom: 16px;
}
.section__heading--light { color: var(--clr-text-inv); }
.section__heading em {
  font-style: italic;
  color: var(--clr-accent);
  -webkit-text-fill-color: var(--clr-accent);
}
.section__sub {
  font-size: 1rem;
  color: var(--clr-text-muted);
  line-height: 1.75;
}
.section--dark .section__sub { color: rgba(232,227,219,.55); }
.section__cta {
  text-align: center;
  margin-top: 48px;
}

/* ======================================================
   ABOUT
====================================================== */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 64px;
  align-items: start;
}
.about__photo-wrap { position: relative; }
.about__photo-frame { position: relative; display: inline-block; }
.about__photo-placeholder {
  width: 320px;
  height: 380px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #2a2420 0%, #1a1714 100%);
  border: 1px solid var(--clr-border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.about__photo-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}
.about__photo-initials {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 800;
  color: rgba(232,146,74,.25);
  letter-spacing: -.02em;
}
/* Decorative corner accent */
.about__photo-deco {
  position: absolute;
  bottom: -14px;
  right: -14px;
  width: 100px;
  height: 100px;
  border-bottom: 3px solid var(--clr-accent);
  border-right: 3px solid var(--clr-accent);
  border-radius: 0 0 var(--radius-md) 0;
  pointer-events: none;
}

.about__text { padding-top: 8px; }
.about__lead {
  font-size: 1.12rem;
  line-height: 1.8;
  color: var(--clr-text);
  margin-bottom: 18px;
  font-weight: 400;
}
.about__body {
  font-size: .97rem;
  color: var(--clr-text-muted);
  line-height: 1.8;
  margin-bottom: 36px;
}
.about__stats {
  display: flex;
  gap: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--clr-border-light);
}
.stat__num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--clr-accent);
  line-height: 1;
  margin-bottom: 4px;
}
.stat__label {
  font-size: .8rem;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* ======================================================
   MACHINE LEARNING
====================================================== */
.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 56px;
}
.skill-tag {
  background: rgba(232,146,74,.1);
  border: 1px solid rgba(232,146,74,.22);
  color: var(--clr-accent);
  font-family: var(--font-mono);
  font-size: .8rem;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  transition: var(--transition);
}
.skill-tag:hover {
  background: rgba(232,146,74,.2);
  transform: translateY(-2px);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.project-card {
  background: var(--clr-bg-2);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.project-card:hover {
  transform: translateY(-5px);
  border-color: rgba(232,146,74,.3);
  box-shadow: var(--shadow-lift);
}
.project-card__badge {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--clr-accent);
  letter-spacing: .1em;
  text-transform: uppercase;
  background: rgba(232,146,74,.1);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  align-self: flex-start;
}
.project-card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--clr-text-inv);
  line-height: 1.35;
}
.project-card__desc {
  font-size: .9rem;
  color: rgba(232,227,219,.55);
  line-height: 1.7;
  flex: 1;
}
.project-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.project-card__stack span {
  font-family: var(--font-mono);
  font-size: .73rem;
  color: rgba(232,227,219,.45);
  background: rgba(255,255,255,.04);
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255,255,255,.07);
}
.project-card__links {
  display: flex;
  gap: 16px;
  padding-top: 8px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.project-link {
  font-size: .83rem;
  font-weight: 600;
  color: var(--clr-accent);
  transition: var(--transition);
}
.project-link:hover { color: var(--clr-gold); gap: 8px; }

/* ======================================================
   TEACHING
====================================================== */
.teaching__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.teaching__col-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--clr-border-light);
}
.course-card {
  background: #fff;
  border: 1px solid var(--clr-border-light);
  border-radius: var(--radius-md);
  padding: 22px;
  margin-bottom: 16px;
  transition: var(--transition);
  box-shadow: 0 2px 8px rgba(0,0,0,.04);
}
.course-card:hover {
  transform: translateX(4px);
  border-left: 3px solid var(--clr-accent);
  box-shadow: 0 4px 18px rgba(0,0,0,.08);
}
.course-card__code {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--clr-accent);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.course-card__name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 8px;
}
.course-card__desc {
  font-size: .87rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}
.course-card__links {
  display: flex;
  gap: 18px;
}

.resource-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--clr-border-light);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  transition: var(--transition);
  box-shadow: 0 2px 8px rgba(0,0,0,.04);
}
.resource-item:hover {
  box-shadow: 0 4px 18px rgba(0,0,0,.08);
  transform: translateY(-2px);
}
.resource-item__icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--clr-bg-warm);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}
.resource-item h4 {
  font-size: .95rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 4px;
}
.resource-item p {
  font-size: .85rem;
  color: var(--clr-text-muted);
  line-height: 1.55;
  margin-bottom: 8px;
}

.teaching__quote {
  margin-top: 64px;
  text-align: center;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.75rem);
  font-style: italic;
  color: var(--clr-text-muted);
  line-height: 1.6;
  padding: 40px 48px;
  border-top: 1px solid var(--clr-border-light);
  border-bottom: 1px solid var(--clr-border-light);
  position: relative;
}
.teaching__quote em { color: var(--clr-accent); font-style: normal; }
.teaching__quote::before {
  content: '\201C';
  font-size: 6rem;
  color: rgba(232,146,74,.12);
  font-family: var(--font-display);
  position: absolute;
  top: 10px;
  left: 24px;
  line-height: 1;
}

/* ======================================================
   TRAVEL
====================================================== */
.travel__featured {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,.07);
}
.travel__featured-img {
  position: relative;
  min-height: 360px;
}
.travel__img-placeholder {
  width: 100%;
  height: 100%;
  min-height: 200px;
  background: linear-gradient(135deg, #f0d9b5, #c8a97e);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  color: rgba(100,70,30,.6);
  flex-direction: column;
  gap: 8px;
  border-radius: var(--radius-md);
}
.travel__img-placeholder--large {
  min-height: 360px;
  border-radius: 0;
  background: linear-gradient(135deg, #d4b896, #a8825c);
  font-size: 1rem;
}
.travel__featured-tag {
  position: absolute;
  top: 18px;
  left: 18px;
  background: var(--clr-accent);
  color: #fff;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
}
.travel__featured-text {
  padding: 40px 40px 40px 0;
}
.travel__region {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--clr-accent);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.travel__story-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 16px;
  line-height: 1.25;
}
.travel__story-excerpt {
  font-size: .97rem;
  color: var(--clr-text-muted);
  line-height: 1.8;
  margin-bottom: 18px;
}
.travel__meta {
  display: flex;
  gap: 16px;
  font-size: .82rem;
  color: var(--clr-text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

/* Story grid cards */
.story-card {
  background: #fff;
  border: 1px solid var(--clr-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 2px 12px rgba(0,0,0,.05);
}
.story-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 36px rgba(0,0,0,.11);
}
.story-card__img {
  height: 180px;
  overflow: hidden;
}
.story-card__img .travel__img-placeholder {
  height: 180px;
  min-height: 180px;
  border-radius: 0;
  font-size: 1.5rem;
}
.story-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}
.story-card:hover .story-card__img img { transform: scale(1.06); }
.story-card__body {
  padding: 22px;
}
.story-card__title {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 8px;
  line-height: 1.3;
}
.story-card__excerpt {
  font-size: .87rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
  margin-bottom: 12px;
}

/* States visited */
.travel__footer {
  margin-top: 56px;
  text-align: center;
}
.travel__states-label {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  margin-bottom: 16px;
}
.travel__states {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.state-badge {
  background: rgba(232,146,74,.1);
  border: 1px solid rgba(232,146,74,.25);
  color: var(--clr-accent-2);
  font-size: .82rem;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  transition: var(--transition);
}
.state-badge:hover {
  background: rgba(232,146,74,.2);
  transform: scale(1.04);
}

/* ======================================================
   CONTACT
====================================================== */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: 860px;
  margin: 0 auto;
}
.contact__card {
  background: #fff;
  border: 1px solid var(--clr-border-light);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: 0 4px 20px rgba(0,0,0,.05);
}
.contact__card-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--clr-border-light);
}
.contact__item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 22px;
}
.contact__item-icon {
  font-size: 1.1rem;
  width: 38px;
  height: 38px;
  background: var(--clr-bg-warm);
  border: 1px solid var(--clr-border-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact__item-label {
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--clr-text-muted);
  font-family: var(--font-mono);
  margin-bottom: 3px;
}
.contact__item-value {
  font-size: .93rem;
  font-weight: 500;
  color: var(--clr-text);
  transition: var(--transition);
}
a.contact__item-value:hover { color: var(--clr-accent); }

.contact__social {
  background: #fff;
  border: 1px solid var(--clr-border-light);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: 0 4px 20px rgba(0,0,0,.05);
}
.social-links { display: flex; flex-direction: column; gap: 14px; }
.social-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--clr-bg-light);
  border: 1px solid var(--clr-border-light);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.social-link:hover {
  transform: translateX(5px);
  border-color: var(--clr-accent);
  background: rgba(232,146,74,.04);
}
.social-link__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #fff;
}
.social-link__icon--github  { background: #24292e; }
.social-link__icon--linkedin { background: #0077b5; }
.social-link__icon--twitter  { background: #000; }
.social-link__icon--scholar  { background: #4285f4; }
.social-link__name {
  font-size: .9rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 1px;
}
.social-link__handle {
  font-size: .78rem;
  color: var(--clr-text-muted);
  font-family: var(--font-mono);
}

/* ======================================================
   FOOTER
====================================================== */
.footer {
  background: var(--clr-bg);
  padding: 48px 0;
  border-top: 1px solid rgba(255,255,255,.05);
}
.footer__inner {
  text-align: center;
  color: var(--clr-text-inv);
}
.footer__name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--clr-accent);
  margin-bottom: 6px;
}
.footer__roles {
  font-size: .85rem;
  color: rgba(232,227,219,.45);
  letter-spacing: .06em;
  margin-bottom: 18px;
}
.footer__copy {
  font-size: .8rem;
  color: rgba(232,227,219,.25);
  font-family: var(--font-mono);
}

/* ======================================================
   RESPONSIVE
====================================================== */
@media (max-width: 900px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about__photo-placeholder { width: 100%; max-width: 340px; }
  .about__photo-wrap { display: flex; justify-content: center; }

  .teaching__grid { grid-template-columns: 1fr; }

  .travel__featured {
    grid-template-columns: 1fr;
  }
  .travel__featured-text { padding: 24px; }
  .travel__featured-img { min-height: 260px; }

  .contact__grid { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .hero__cards {
    grid-template-columns: 1fr;
    max-width: 340px;
  }
  .nav__links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(15,14,13,.97);
    backdrop-filter: blur(16px);
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid rgba(255,255,255,.07);
  }
  .nav__links.open { display: flex; }
  .nav__link { padding: 12px 16px; border-radius: var(--radius-md); }
  .nav__toggle { display: flex; }

  .section { padding: 72px 0; }
  .cards-grid { grid-template-columns: 1fr; }
  .about__stats { gap: 24px; flex-wrap: wrap; }
  .teaching__quote { padding: 28px 24px; font-size: 1.1rem; }
  .teaching__quote::before { font-size: 4rem; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; align-items: center; }
  .nav__logo-text { display: none; }
  .contact__card, .contact__social { padding: 24px; }
}