/* ==========================================================================
   TehSaad — Academic Dossier design system
   Palette:  Ink Navy / Parchment / Brass / Oxblood
   Type:     Fraunces (display) · Inter (body) · IBM Plex Mono (utility)
   ========================================================================== */

:root {
  --ink:        #16233A;
  --ink-2:      #1F2F4A;
  --ink-soft:   #33455F;
  --parchment:  #F0EADB;
  --parchment-2:#E6DDC6;
  --paper:      #FAF7EF;
  --brass:      #B4864B;
  --brass-light:#D9B27C;
  --oxblood:    #7B2E2E;
  --ink-text:   #202634;
  --muted:      #5C6579;
  --line:       rgba(22, 35, 58, 0.14);
  --line-light: rgba(240, 234, 219, 0.22);

  --font-display: 'Fraunces', ui-serif, Georgia, serif;
  --font-body:    'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-mono:    'IBM Plex Mono', ui-monospace, monospace;

  --radius: 3px;
  --container: 1180px;
  --nav-h: 84px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.12;
  margin: 0 0 0.4em;
  color: var(--ink);
}

p { margin: 0 0 1em; color: var(--ink-text); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 1.1em;
}
.eyebrow::before {
  content: '';
  width: 26px; height: 1px;
  background: var(--brass);
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* Grain overlay for a printed/paper feel */
.grain-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.045;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  padding: 0 40px;
  background: rgba(250, 247, 239, 0.86);
  backdrop-filter: blur(10px) saturate(1.1);
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); }
.seal { color: var(--brass); display: flex; transition: transform .6s ease; }
.brand:hover .seal { transform: rotate(24deg); }
.brand-text {
  font-family: var(--font-display);
  font-size: 19px;
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}

.site-nav nav { display: flex; align-items: center; gap: 4px; }
.site-nav nav a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 16px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-soft);
  border-radius: var(--radius);
  transition: color .2s ease, background .2s ease;
}
.site-nav nav a .tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--brass);
}
.site-nav nav a:hover { color: var(--ink); background: var(--parchment-2); }
.site-nav nav a.active { color: var(--ink); font-weight: 600; }
.site-nav nav a.nav-cta {
  margin-left: 10px;
  background: var(--ink);
  color: var(--paper);
}
.site-nav nav a.nav-cta:hover { background: var(--oxblood); color: var(--paper); }
.site-nav nav a.nav-cta .tag { display: none; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); }

/* ==========================================================================
   Hero sections (per-page illustrated backgrounds)
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 108px 0 96px;
  background: var(--ink);
  color: var(--paper);
}
.hero .container { position: relative; z-index: 2; }
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.55;
}
.hero-bg svg { width: 100%; height: 100%; }
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(22,35,58,0.35) 0%, rgba(22,35,58,0.92) 100%);
}
.hero h1 {
  color: var(--paper);
  font-size: clamp(40px, 6vw, 72px);
  max-width: 15ch;
}
.hero .eyebrow { color: var(--brass-light); }
.hero .eyebrow::before { background: var(--brass-light); }
.hero-lede {
  max-width: 62ch;
  font-size: 18px;
  color: rgba(250,247,239,0.82);
}

.hero.small { padding: 78px 0 68px; }
.hero.small h1 { font-size: clamp(32px, 4.6vw, 48px); }

/* ==========================================================================
   Sections & general components
   ========================================================================== */
.section {
  padding: 96px 0;
  border-bottom: 1px solid var(--line);
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  margin-bottom: 52px;
}
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); max-width: 20ch; }
.section-head .lede { max-width: 46ch; color: var(--muted); margin: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid var(--ink);
  color: var(--ink);
  cursor: pointer;
  background: transparent;
  transition: all .2s ease;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.primary:hover { background: var(--oxblood); border-color: var(--oxblood); }
.btn.on-dark { border-color: rgba(250,247,239,0.5); color: var(--paper); }
.btn.on-dark:hover { background: var(--paper); color: var(--ink); }

/* Card grid — used for Projects */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.card {
  background: var(--paper);
  padding: 34px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}
.course-code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--brass);
  border: 1px solid var(--brass-light);
  padding: 3px 8px;
  border-radius: var(--radius);
  white-space: nowrap;
}
.status-pill {
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 9px;
  border-radius: 20px;
  color: var(--muted);
  border: 1px solid var(--line);
}
.status-pill.planned { color: var(--brass); }
.status-pill.in-progress { color: var(--oxblood); border-color: var(--oxblood); }
.status-pill.complete { color: #3E6B4C; border-color: #3E6B4C; }

.card h3 { font-size: 21px; margin-bottom: 2px; }
.card .lang {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.card p { color: var(--ink-soft); font-size: 14.5px; margin-bottom: 6px; }

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 10px;
}
.stack span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-soft);
  background: var(--parchment);
  padding: 4px 8px;
  border-radius: var(--radius);
}

.card-links { display: flex; gap: 16px; margin-top: 6px; }
.card-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  text-decoration: underline;
  text-underline-offset: 3px;
  color: var(--ink);
}

/* Empty state (Certificates / Societies) */
.empty-state {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 64px 40px;
  text-align: center;
  background: var(--parchment);
}
.empty-state .seal-lg {
  color: var(--brass);
  margin: 0 auto 20px;
  width: 56px;
  opacity: 0.85;
}
.empty-state h3 { font-size: 22px; margin-bottom: 8px; }
.empty-state p { color: var(--muted); max-width: 46ch; margin: 0 auto 22px; }

/* Timeline (University) */
.timeline {
  position: relative;
  padding-left: 34px;
  border-left: 1px solid var(--line);
}
.timeline-item { position: relative; padding-bottom: 46px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -39.5px;
  top: 4px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--brass);
  box-shadow: 0 0 0 4px var(--paper);
}
.timeline-item .yr {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--brass);
  letter-spacing: 0.06em;
  margin-bottom: 6px;
  display: block;
}
.timeline-item h4 { font-size: 19px; margin-bottom: 6px; }
.timeline-item p { color: var(--ink-soft); max-width: 60ch; }

.track-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 46px;
}
.track-card {
  border: 1px solid var(--line);
  padding: 26px;
  border-radius: var(--radius);
  background: var(--paper);
}
.track-card .tk-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--oxblood);
  letter-spacing: 0.08em;
}
.track-card h4 { margin: 8px 0 6px; font-size: 18px; }
.track-card p { font-size: 14px; color: var(--muted); margin: 0; }

/* Bio / Intro split */
.bio-split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: start;
}
.bio-split .portrait-frame {
  aspect-ratio: 4/5;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--parchment);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}
.portrait-frame .placeholder-note {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  padding: 24px;
}
.portrait-frame svg { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.5; }

.fact-list { margin-top: 28px; display: grid; gap: 14px; }
.fact-list div { display: flex; gap: 16px; font-size: 14.5px; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.fact-list dt { font-family: var(--font-mono); color: var(--brass); min-width: 110px; text-transform: uppercase; font-size: 11.5px; letter-spacing: 0.05em; padding-top: 2px;}
.fact-list dd { margin: 0; color: var(--ink-text); }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
}
.form-row { margin-bottom: 20px; }
.form-row label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 8px;
}
.form-row input,
.form-row textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--line);
  background: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink-text);
  border-radius: var(--radius);
  resize: vertical;
}
.form-row input:focus,
.form-row textarea:focus {
  outline: 2px solid var(--brass);
  outline-offset: 1px;
  border-color: var(--brass);
}
.form-status {
  margin-top: 16px;
  font-size: 14px;
  padding: 12px 14px;
  border-radius: var(--radius);
  display: none;
}
.form-status.ok { display: block; background: #EAF3EC; color: #285C39; }
.form-status.err { display: block; background: #F6E8E4; color: var(--oxblood); }

.contact-links { display: grid; gap: 18px; margin-top: 8px; }
.contact-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 15px;
  transition: border-color .2s ease, transform .2s ease;
}
.contact-links a:hover { border-color: var(--brass); transform: translateX(4px); }
.contact-links .cl-label { font-family: var(--font-mono); font-size: 11px; color: var(--muted); text-transform: uppercase; }

/* ==========================================================================
   Dark theme tokens (Intro hero + full-bleed dark heroes elsewhere)
   ========================================================================== */
:root {
  --dark-bg:    #10161F;
  --dark-bg-2:  #171F2B;
  --dark-text:  #F1ECE0;
  --dark-muted: rgba(241,236,224,0.62);
  --dark-line:  rgba(241,236,224,0.14);
  --oxblood-lt: #D6785F;
}

/* ==========================================================================
   Hero v2 — arch portrait + stats column (used on every page)
   ========================================================================== */
.hero-v2 {
  position: relative;
  padding: 64px 0 0;
  background: var(--parchment);
  overflow: hidden;
}
.hero-v2-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.85fr auto;
  gap: 40px;
  align-items: center;
}
.hero-v2-greet {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--ink-soft);
  margin-bottom: 14px;
}
.hero-v2 h1 {
  font-size: clamp(38px, 4.6vw, 62px);
  line-height: 1.04;
  letter-spacing: -0.01em;
}
.hero-v2 h1 .accent {
  font-style: italic;
  font-weight: 400;
  color: var(--oxblood);
}
.hero-v2-lede {
  max-width: 44ch;
  font-size: 16.5px;
  color: var(--ink-soft);
  margin: 22px 0 30px;
}

/* Arch portrait frame */
.arch-frame {
  position: relative;
  width: 100%;
  max-width: 380px;
  aspect-ratio: 3/4;
  margin: 0 auto;
  border-radius: 200px 200px 24px 24px;
  overflow: hidden;
  background: linear-gradient(160deg, var(--ink) 0%, var(--ink-2) 60%, var(--brass) 160%);
  align-self: end;
}
.arch-frame svg { width: 100%; height: 100%; }
.arch-frame .arch-caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 16px 20px 20px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(250,247,239,0.7);
  background: linear-gradient(0deg, rgba(22,35,58,0.55), transparent);
}

/* Stats column */
.hero-stats {
  display: flex;
  flex-direction: column;
  gap: 26px;
  padding-left: 8px;
  border-left: 1px solid var(--line);
  align-self: center;
}
.hero-stats .stat { text-align: left; }
.hero-stats .stat .num {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 30px;
  color: var(--ink);
  line-height: 1;
}
.hero-stats .stat .lbl {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-top: 4px;
}

/* Feature strip along the bottom of the hero */
.feature-strip {
  margin-top: 56px;
  padding: 36px 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.feature-strip .feat {
  padding: 0 28px;
  border-left: 1px solid var(--line);
}
.feature-strip .feat:first-child { border-left: none; padding-left: 0; }
.feature-strip .feat h4 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  margin-bottom: 8px;
  color: var(--ink);
}
.feature-strip .feat p {
  font-size: 13.5px;
  color: var(--muted);
  margin: 0;
}

@media (max-width: 980px) {
  .hero-v2-grid { grid-template-columns: 1fr; }
  .hero-stats {
    flex-direction: row;
    flex-wrap: wrap;
    border-left: none;
    border-top: 1px solid var(--line);
    padding: 24px 0 0;
    gap: 28px;
  }
  .arch-frame { max-width: 300px; }
}
@media (max-width: 700px) {
  .feature-strip { grid-template-columns: 1fr 1fr; row-gap: 24px; }
  .feature-strip .feat:nth-child(3) { border-left: none; padding-left: 0; }
}
@media (max-width: 460px) {
  .feature-strip { grid-template-columns: 1fr; }
  .feature-strip .feat { border-left: none; padding-left: 0; }
}

/* ---- Dark variant of hero-v2 (Intro page) -------------------------------- */
.hero-v2.dark {
  background: var(--dark-bg);
  color: var(--dark-text);
}
.hero-v2.dark .eyebrow { color: var(--brass-light); }
.hero-v2.dark .eyebrow::before { background: var(--brass-light); }
.hero-v2.dark .hero-v2-greet { color: rgba(241,236,224,0.7); }
.hero-v2.dark h1 { color: var(--dark-text); }
.hero-v2.dark h1 .accent { color: var(--oxblood-lt); }
.hero-v2.dark .hero-v2-lede { color: var(--dark-muted); }
.hero-v2.dark .btn.primary { background: var(--brass); border-color: var(--brass); color: var(--dark-bg); }
.hero-v2.dark .btn.primary:hover { background: var(--oxblood-lt); border-color: var(--oxblood-lt); }
.hero-v2.dark .hero-stats { border-left: 1px solid var(--dark-line); }
.hero-v2.dark .hero-stats .stat .num { color: var(--dark-text); }
.hero-v2.dark .hero-stats .stat .lbl { color: var(--dark-muted); }
.hero-v2.dark .arch-frame { background: linear-gradient(160deg, #0B1017 0%, var(--dark-bg-2) 55%, var(--brass) 170%); box-shadow: 0 0 0 1px var(--dark-line); }
.hero-v2.dark .feature-strip { border-top: 1px solid var(--dark-line); }
.hero-v2.dark .feature-strip .feat { border-left: 1px solid var(--dark-line); }
.hero-v2.dark .feature-strip .feat:first-child { border-left: none; }
.hero-v2.dark .feature-strip .feat h4 { color: var(--dark-text); }
.hero-v2.dark .feature-strip .feat p { color: var(--dark-muted); }

/* ==========================================================================
   Hero: Terminal style (Projects) — dark, monospace code panel
   ========================================================================== */
.hero-term {
  position: relative;
  background: var(--dark-bg);
  color: var(--dark-text);
  padding: 64px 0 0;
  overflow: hidden;
}
.hero-term .hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.22;
}
.hero-term .hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-term .container { position: relative; z-index: 2; }
.hero-term .eyebrow { color: var(--brass-light); }
.hero-term .eyebrow::before { background: var(--brass-light); }
.hero-term-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.hero-term h1 { color: var(--dark-text); font-size: clamp(36px, 4.4vw, 56px); line-height: 1.06; }
.hero-term h1 .accent { color: var(--brass-light); font-style: italic; font-weight: 400; }
.hero-term-lede { max-width: 46ch; color: var(--dark-muted); margin: 20px 0 28px; font-size: 16px; }

.code-panel {
  background: var(--dark-bg-2);
  border: 1px solid var(--dark-line);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,0.35);
}
.code-panel .cp-bar { display: flex; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--dark-line); }
.code-panel .cp-bar span { width: 10px; height: 10px; border-radius: 50%; background: rgba(241,236,224,0.18); }
.code-panel .cp-bar span:nth-child(1) { background: #C1503F; }
.code-panel .cp-bar span:nth-child(2) { background: var(--brass); }
.code-panel .cp-bar span:nth-child(3) { background: #4C8B5F; }
.code-panel pre {
  margin: 0;
  padding: 22px 24px 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  color: rgba(241,236,224,0.85);
  overflow-x: auto;
}
.code-panel .c-kw   { color: #E2A5D0; }
.code-panel .c-type { color: var(--brass-light); }
.code-panel .c-str  { color: #9FCB8E; }
.code-panel .c-com  { color: rgba(241,236,224,0.4); }

.term-stats {
  margin-top: 44px;
  display: flex;
  gap: 44px;
  flex-wrap: wrap;
  border-top: 1px solid var(--dark-line);
  padding-top: 26px;
}
.term-stats .stat .num { color: var(--dark-text); font-family: var(--font-display); font-size: 26px; font-weight: 600; }
.term-stats .stat .lbl { color: var(--dark-muted); font-family: var(--font-mono); font-size: 11px; margin-top: 3px; }

.term-features {
  margin-top: 0;
  padding: 34px 0 44px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.term-features .feat { padding: 0 26px; border-left: 1px solid var(--dark-line); }
.term-features .feat:first-child { border-left: none; padding-left: 0; }
.term-features .feat h4 { color: var(--dark-text); font-size: 13.5px; text-transform: uppercase; margin-bottom: 7px; }
.term-features .feat p { color: var(--dark-muted); font-size: 13px; margin: 0; }

@media (max-width: 900px) {
  .hero-term-grid { grid-template-columns: 1fr; }
  .term-features { grid-template-columns: 1fr 1fr; row-gap: 20px; }
}
@media (max-width: 480px) { .term-features { grid-template-columns: 1fr; } .term-features .feat { border-left: none; padding-left: 0; } }

/* ==========================================================================
   Hero: Centered style (Certificates) — light, symmetric, seal-led
   ========================================================================== */
.hero-centered {
  background: var(--paper);
  padding: 84px 0 0;
  text-align: center;
}
.hero-centered .eyebrow { justify-content: center; }
.hero-centered .eyebrow::before { display: none; }
.hero-centered h1 { font-size: clamp(34px, 4.2vw, 52px); max-width: 18ch; margin: 0 auto 20px; }
.hero-centered h1 .accent { font-style: italic; font-weight: 400; color: var(--oxblood); }
.hero-centered-lede { max-width: 52ch; margin: 0 auto 40px; color: var(--muted); font-size: 16.5px; }

.seal-centerpiece { width: 150px; margin: 0 auto 40px; color: var(--brass); }
.seal-centerpiece svg { width: 100%; height: 100%; }

.centered-stats {
  display: flex;
  justify-content: center;
  gap: 56px;
  flex-wrap: wrap;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  max-width: 780px;
  margin: 0 auto;
}
.centered-stats .stat .num { font-family: var(--font-display); font-size: 26px; font-weight: 600; color: var(--ink); }
.centered-stats .stat .lbl { font-family: var(--font-mono); font-size: 11px; color: var(--muted); margin-top: 3px; }

.hero-centered .feature-strip { max-width: 980px; margin: 0 auto; text-align: left; border-top: none; }

/* ==========================================================================
   Hero: Blueprint style (University) — dark full-bleed grid
   ========================================================================== */
.hero-blueprint {
  position: relative;
  background: var(--dark-bg);
  color: var(--dark-text);
  padding: 90px 0 0;
  overflow: hidden;
}
.hero-blueprint .hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.22;
}
.hero-blueprint .hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-blueprint .bp-grid { position: absolute; inset: 0; opacity: 0.35; z-index: 1; }
.hero-blueprint .container { position: relative; z-index: 2; }
.hero-blueprint .eyebrow { color: var(--brass-light); }
.hero-blueprint .eyebrow::before { background: var(--brass-light); }
.hero-blueprint h1 { color: var(--dark-text); font-size: clamp(36px, 4.6vw, 58px); max-width: 16ch; }
.hero-blueprint h1 .accent { color: var(--brass-light); font-style: italic; font-weight: 400; }
.hero-blueprint-lede { max-width: 52ch; color: var(--dark-muted); font-size: 16.5px; margin: 22px 0 40px; }

.bp-timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--dark-line); border: 1px solid var(--dark-line); margin-bottom: 0; }
.bp-timeline .bp-yr { background: var(--dark-bg); padding: 22px 22px 26px; }
.bp-timeline .bp-yr .tag { font-family: var(--font-mono); font-size: 11px; color: var(--brass-light); letter-spacing: 0.06em; }
.bp-timeline .bp-yr h4 { color: var(--dark-text); font-size: 16px; margin: 8px 0 6px; }
.bp-timeline .bp-yr p { color: var(--dark-muted); font-size: 12.5px; margin: 0; }

@media (max-width: 800px) { .bp-timeline { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .bp-timeline { grid-template-columns: 1fr; } }

/* ==========================================================================
   Hero: Minimal style (Societies) — light, quiet, mostly whitespace
   ========================================================================== */
.hero-minimal {
  background: var(--parchment);
  padding: 120px 0 90px;
  text-align: center;
}
.hero-minimal .eyebrow { justify-content: center; }
.hero-minimal .eyebrow::before { display: none; }
.hero-minimal h1 { font-size: clamp(32px, 4vw, 48px); max-width: 20ch; margin: 0 auto 22px; }
.hero-minimal h1 .accent { font-style: italic; font-weight: 400; color: var(--oxblood); }
.hero-minimal-lede { max-width: 50ch; margin: 0 auto 46px; color: var(--muted); font-size: 16px; }
.hero-minimal .minimal-mark { width: 64px; height: 64px; margin: 0 auto 34px; color: var(--brass); opacity: 0.9; }
.hero-minimal .minimal-mark svg { width: 100%; height: 100%; }

/* ==========================================================================
   Hero: Split style (Contact) — two-tone dark/light panels
   ========================================================================== */
.hero-split-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 340px;
}
.hero-split-2 .split-dark {
  background: var(--dark-bg);
  color: var(--dark-text);
  padding: 76px 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hero-split-2 .split-dark .eyebrow { color: var(--brass-light); }
.hero-split-2 .split-dark .eyebrow::before { background: var(--brass-light); }
.hero-split-2 .split-dark h1 { color: var(--dark-text); font-size: clamp(32px, 3.6vw, 50px); }
.hero-split-2 .split-dark h1 .accent { color: var(--brass-light); font-style: italic; font-weight: 400; }
.hero-split-2 .split-dark p { color: var(--dark-muted); max-width: 40ch; margin-top: 18px; font-size: 15.5px; }
.hero-split-2 .split-light {
  background: var(--parchment);
  padding: 76px 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
}
.hero-split-2 .split-light .mini-stat { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 1px solid var(--line); padding-bottom: 14px; }
.hero-split-2 .split-light .mini-stat .num { font-family: var(--font-display); font-size: 22px; color: var(--ink); }
.hero-split-2 .split-light .mini-stat .lbl { font-family: var(--font-mono); font-size: 11px; color: var(--muted); text-transform: uppercase; }

@media (max-width: 820px) {
  .hero-split-2 { grid-template-columns: 1fr; }
  .hero-split-2 .split-dark, .hero-split-2 .split-light { padding: 56px 28px; }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--ink); color: var(--parchment); padding: 56px 0 34px; }
.footer-inner { max-width: var(--container); margin: 0 auto; padding: 0 32px; }
.footer-seal { display: flex; align-items: center; gap: 14px; color: var(--brass-light); margin-bottom: 26px; }
.footer-name { font-family: var(--font-display); font-size: 18px; margin: 0; color: var(--paper); }
.footer-name span { color: rgba(240,234,219,0.55); font-family: var(--font-body); font-size: 14px; }
.footer-role { margin: 2px 0 0; font-family: var(--font-mono); font-size: 12px; color: rgba(240,234,219,0.55); }
.footer-links { display: flex; gap: 26px; flex-wrap: wrap; padding: 22px 0; border-top: 1px solid var(--line-light); border-bottom: 1px solid var(--line-light); }
.footer-links a { font-size: 13.5px; color: rgba(240,234,219,0.78); }
.footer-links a:hover { color: var(--brass-light); }
.footer-note { margin: 20px 0 0; font-family: var(--font-mono); font-size: 11.5px; color: rgba(240,234,219,0.4); }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 880px) {
  .bio-split, .contact-grid { grid-template-columns: 1fr; }
  .bio-split .portrait-frame { max-width: 340px; }
}

@media (max-width: 760px) {
  .site-nav { padding: 0 20px; }
  .nav-toggle { display: flex; }
  .site-nav nav {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: var(--paper);
    flex-direction: column;
    align-items: stretch;
    padding: 10px 20px 26px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: all .25s ease;
  }
  .site-nav nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .site-nav nav a.nav-cta { margin-left: 0; margin-top: 8px; justify-content: center; }
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .section-head { flex-direction: column; align-items: flex-start; }
}

/* ==========================================================================
   Utility & Extended Components (Portfolio Polish)
   ========================================================================== */
.btn-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.btn.sm {
  padding: 8px 16px;
  font-size: 11.5px;
}

.btn.secondary {
  background: transparent;
  border-color: var(--line);
  color: var(--ink-text);
}
.btn.secondary:hover {
  background: var(--parchment);
  color: var(--ink);
  border-color: var(--ink-soft);
}

.btn.on-dark.secondary {
  border-color: rgba(250,247,239,0.35);
  color: var(--paper);
  background: transparent;
}
.btn.on-dark.secondary:hover {
  background: rgba(250,247,239,0.12);
  border-color: var(--brass-light);
  color: var(--brass-light);
}

.card-links {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.card-links .card-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  transition: all .15s ease;
  text-decoration: none;
}
.card-links .card-btn:hover {
  background: var(--parchment-2);
  border-color: var(--brass);
  color: var(--ink);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--parchment);
  color: var(--ink);
  cursor: pointer;
  transition: all .2s ease;
}
.copy-btn:hover {
  background: var(--parchment-2);
  border-color: var(--brass);
}
.copy-btn.copied {
  background: #2E5A3C;
  color: #FAF7EF;
  border-color: #2E5A3C;
}

/* AI Track Specific Enhancements */
.ai-module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 32px;
}
.ai-module-card {
  background: var(--paper);
  padding: 32px;
  display: flex;
  flex-direction: column;
}
.ai-module-card .phase-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--brass);
  margin-bottom: 8px;
}
.ai-module-card h3 {
  font-size: 22px;
  margin-bottom: 8px;
}
.ai-module-card p {
  color: var(--ink-soft);
  font-size: 14px;
}
.ai-module-card .skills-list {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 13.5px;
}
.ai-module-card .skills-list li {
  margin-bottom: 6px;
}

/* ==========================================================================
   Engineering Lab & Notes (Deep Dives, Reading Shelf, Ledger)
   ========================================================================== */
.lab-jump-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.lab-jump-bar a {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  transition: all .2s ease;
}
.lab-jump-bar a:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.deep-dive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}
.deep-dive-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 18px rgba(22, 35, 58, 0.03);
}
.deep-dive-card .dd-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}
.deep-dive-card h3 {
  font-size: 21px;
  margin: 4px 0 10px;
  line-height: 1.25;
}
.deep-dive-card p {
  color: var(--ink-soft);
  font-size: 14.5px;
  margin-bottom: 16px;
}
.deep-dive-card .code-snippet {
  background: var(--ink);
  color: rgba(250, 247, 239, 0.9);
  padding: 16px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  overflow-x: auto;
  margin: 12px 0 16px;
  border: 1px solid var(--line-light);
}
.deep-dive-card .takeaway-box {
  background: var(--parchment);
  border-left: 3px solid var(--brass);
  padding: 12px 16px;
  font-size: 13px;
  color: var(--ink);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-top: auto;
}

/* Reading Shelf */
.shelf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.book-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.book-card .book-type {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--brass);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.book-card h3 {
  font-size: 18px;
  margin: 0;
}
.book-card .author {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}
.book-card p {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin: 0;
}

/* Ledger timeline */
.ledger-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.ledger-item {
  background: var(--paper);
  padding: 24px 32px;
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 28px;
  align-items: baseline;
}
.ledger-item .date-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--brass);
  font-weight: 500;
}
.ledger-item h4 {
  font-size: 17px;
  margin: 0 0 6px;
}
.ledger-item p {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}

@media (max-width: 760px) {
  .ledger-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 20px;
  }
}

/* Journey page — year blocks reuse .eyebrow, .ledger-list, .status-pill */
.journey-year { margin-bottom: 40px; }
.journey-year:last-child { margin-bottom: 0; }
.journey-year-head { margin-bottom: 16px; }
.journey-year-head h3 { font-size: 22px; margin: 0; }