/* ============================================================
   RABINDRA KARKI — Multi-Page Geology Portfolio
   style.css · Shared across ALL pages
   Aesthetic: Editorial · Earth Tones · Refined
   ============================================================ */

/* ── CSS Variables ── */
:root {
  --stone:      #1c1a17;
  --slate:      #2e2c28;
  --earth:      #3d3830;
  --warm-gray:  #8a8278;
  --cream:      #f5f2ec;
  --parchment:  #ede8df;
  --gold:       #b8975a;
  --gold-light: #d4af6e;
  --rust:       #a05c3b;
  --white:      #ffffff;

  --font-display: 'Cormorant Garamond', serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'DM Mono', monospace;

  --max-w:     1100px;
  --radius:    4px;
  --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--cream);
  color: var(--stone);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ── Scroll Reveal ── */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============================================================
   NAVIGATION
   ============================================================ */
#navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 200;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 40px; height: 64px;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}
#navbar.always-dark,
#navbar.scrolled {
  background: rgba(28,26,23,0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem; font-weight: 600;
  color: var(--white); letter-spacing: 0.05em;
  transition: color var(--transition);
}
.nav-logo:hover { color: var(--gold); }
.nav-links { display: flex; gap: 36px; }
.nav-links a {
  font-family: var(--font-body);
  font-size: 0.78rem; font-weight: 400;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: ''; position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--gold);
  transition: width var(--transition);
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--gold); }
.nav-links a.active::after { width: 100%; }

.menu-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.menu-toggle span {
  display: block; width: 24px; height: 1.5px;
  background: var(--white); transition: var(--transition);
}

/* Mobile Menu */
.mobile-menu {
  display: none; position: fixed;
  top: 64px; left: 0; right: 0;
  background: var(--stone); z-index: 199;
  padding: 16px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.mobile-menu.open { display: block; }
.mobile-menu ul { display: flex; flex-direction: column; }
.mobile-menu a {
  display: block; padding: 13px 40px;
  font-size: 0.82rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition), background var(--transition);
}
.mobile-menu a:hover, .mobile-menu a.active {
  color: var(--gold); background: rgba(255,255,255,0.03);
}

/* ============================================================
   HERO — index.html full screen
   ============================================================ */
#hero {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  background: var(--stone); overflow: hidden;
  padding: 120px 40px 100px;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.geo-pattern {
  position: absolute; inset: 0;
  background-image:
    radial-gradient(ellipse 80% 50% at 70% 60%, rgba(184,151,90,0.09) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 20% 30%, rgba(160,92,59,0.07) 0%, transparent 50%);
}
.geo-pattern::before {
  content: ''; position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg stroke='rgba(255,255,255,0.025)' stroke-width='0.5'%3E%3Cpath d='M30 0L60 30L30 60L0 30Z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-content { position: relative; z-index: 1; max-width: var(--max-w); margin: 0 auto; width: 100%; }
.hero-tag {
  font-family: var(--font-mono); font-size: 0.75rem;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 24px; display: block;
}
#hero h1 {
  font-family: var(--font-display);
  font-size: clamp(4rem, 10vw, 9rem);
  font-weight: 300; line-height: 0.92;
  color: var(--white); margin-bottom: 32px;
}
.name-line { display: block; }
.name-line.italic { font-style: italic; color: var(--gold); }
.hero-sub {
  font-size: 1rem; font-weight: 300;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.04em; line-height: 1.85; margin-bottom: 48px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  display: inline-block; padding: 14px 36px;
  background: var(--gold); color: var(--stone);
  font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase;
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition);
}
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); }
.btn-ghost {
  display: inline-block; padding: 13px 36px;
  border: 1px solid rgba(255,255,255,0.28);
  color: rgba(255,255,255,0.78);
  font-size: 0.78rem; font-weight: 400;
  letter-spacing: 0.12em; text-transform: uppercase;
  border-radius: var(--radius);
  transition: border-color var(--transition), color var(--transition);
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }

.hero-scroll {
  position: absolute; bottom: 40px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px; z-index: 1;
}
.hero-scroll span {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: rgba(255,255,255,0.28);
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.28), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50%       { opacity: 0.9; transform: scaleY(1.15); }
}
.hero-stat-bar {
  position: relative; z-index: 1;
  max-width: var(--max-w); margin: 56px auto 0;
  display: flex; align-items: center; gap: 40px;
  padding-top: 40px; border-top: 1px solid rgba(255,255,255,0.08);
}
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-num {
  font-family: var(--font-display); font-size: 2.5rem;
  font-weight: 300; color: var(--gold); line-height: 1;
}
.stat-label {
  font-size: 0.68rem; letter-spacing: 0.15em;
  text-transform: uppercase; color: rgba(255,255,255,0.38);
}
.stat-divider { width: 1px; height: 40px; background: rgba(255,255,255,0.1); }

/* ============================================================
   PAGE HERO — Compact dark header for inner pages
   ============================================================ */
.page-hero {
  position: relative; background: var(--stone);
  padding: 140px 40px 80px; overflow: hidden;
}
.page-hero-bg {
  position: absolute; inset: 0;
  background-image: radial-gradient(ellipse 60% 100% at 80% 50%, rgba(184,151,90,0.07) 0%, transparent 55%);
}
.page-hero-bg::before {
  content: ''; position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg stroke='rgba(255,255,255,0.025)' stroke-width='0.5'%3E%3Cpath d='M30 0L60 30L30 60L0 30Z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.page-hero-inner { position: relative; z-index: 1; max-width: var(--max-w); margin: 0 auto; }
.breadcrumb {
  display: flex; align-items: center; gap: 8px; margin-bottom: 24px;
}
.breadcrumb a, .breadcrumb span {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  transition: color var(--transition);
}
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb .sep { color: rgba(255,255,255,0.15); }
.breadcrumb .current { color: rgba(255,255,255,0.55); }
.page-hero-tag {
  font-family: var(--font-mono); font-size: 0.7rem;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--gold); display: block; margin-bottom: 16px;
}
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 300; line-height: 1; color: var(--white);
}
.page-hero h1 em { font-style: italic; color: var(--gold); }
.page-hero-sub {
  font-size: 0.95rem; color: rgba(255,255,255,0.45);
  margin-top: 18px; max-width: 600px; line-height: 1.8;
}

/* ============================================================
   SHARED SECTION UTILITIES
   ============================================================ */
section { padding: 96px 40px; }
.section-inner { max-width: var(--max-w); margin: 0 auto; }
.section-header { margin-bottom: 60px; }
.section-num {
  font-family: var(--font-mono); font-size: 0.68rem;
  letter-spacing: 0.22em; color: var(--warm-gray);
  display: block; margin-bottom: 12px;
}
.section-num.light { color: rgba(255,255,255,0.28); }
.section-heading {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 300; line-height: 1.1; color: var(--stone);
}
.section-heading em { font-style: italic; color: var(--gold); }
.section-heading.light { color: var(--white); }

.dark-section   { background: var(--stone); }
.tinted-section { background: var(--parchment); }

.split-layout { display: grid; grid-template-columns: 140px 1fr; gap: 60px; align-items: start; }
.split-label  { display: flex; flex-direction: column; gap: 8px; padding-top: 10px; }
.section-tag  {
  font-family: var(--font-mono); font-size: 0.68rem;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--warm-gray);
}
.body-large {
  font-family: var(--font-display); font-size: 1.5rem;
  font-weight: 300; line-height: 1.65; color: var(--stone); margin-bottom: 24px;
}
.body-large.light { color: rgba(255,255,255,0.85); }
.body-text { font-size: 0.94rem; color: var(--warm-gray); line-height: 1.88; margin-bottom: 28px; }

/* Chips */
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.chip {
  padding: 6px 16px;
  border: 1px solid rgba(184,151,90,0.38);
  color: var(--gold); font-size: 0.73rem;
  letter-spacing: 0.08em; border-radius: 100px;
  font-family: var(--font-mono); background: rgba(184,151,90,0.05);
  white-space: nowrap;
}

/* Buttons */
.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 28px;
  border: 1px solid rgba(28,26,23,0.22);
  color: var(--stone); font-size: 0.76rem; font-weight: 400;
  letter-spacing: 0.1em; text-transform: uppercase;
  border-radius: var(--radius);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold); background: rgba(184,151,90,0.04); }
.btn-outline .arrow { transition: transform var(--transition); }
.btn-outline:hover .arrow { transform: translateX(4px); }

.btn-dark {
  display: inline-block; padding: 14px 40px;
  background: var(--stone); color: var(--white);
  font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase;
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition);
}
.btn-dark:hover { background: var(--slate); transform: translateY(-2px); }

/* ============================================================
   INDEX PAGE
   ============================================================ */
.summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; }
.summary-card {
  background: var(--parchment); padding: 48px 40px;
  display: flex; flex-direction: column; gap: 16px;
  transition: background var(--transition);
  position: relative; overflow: hidden;
}
.summary-card::before {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 0; height: 3px; background: var(--gold);
  transition: width 0.4s ease;
}
.summary-card:hover { background: var(--cream); }
.summary-card:hover::before { width: 100%; }
.summary-card-icon  { font-size: 1.6rem; line-height: 1; }
.summary-card-num   {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--gold);
}
.summary-card h3    {
  font-family: var(--font-display); font-size: 1.5rem;
  font-weight: 400; color: var(--stone); line-height: 1.15;
}
.summary-card p     { font-size: 0.88rem; color: var(--warm-gray); line-height: 1.8; flex: 1; }
.summary-card-link  {
  font-family: var(--font-mono); font-size: 0.7rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--gold);
  display: inline-flex; align-items: center; gap: 6px; margin-top: 8px;
  transition: gap var(--transition);
}
.summary-card:hover .summary-card-link { gap: 12px; }

/* Featured project strip */
.featured-project     { background: var(--stone); padding: 80px 40px; }
.featured-project-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1.5fr; gap: 80px; align-items: center;
}
.featured-project-meta { display: flex; flex-direction: column; gap: 18px; }
.featured-label         {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.22em; text-transform: uppercase; color: rgba(255,255,255,0.3);
}
.featured-project-meta h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300; color: var(--white); line-height: 1.1;
}
.featured-project-meta h2 em { font-style: italic; color: var(--gold); }
.featured-project-desc { font-size: 0.9rem; color: rgba(255,255,255,0.5); line-height: 1.85; }
.featured-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.badge {
  font-family: var(--font-mono); font-size: 0.68rem;
  letter-spacing: 0.1em; padding: 5px 12px;
  border: 1px solid rgba(184,151,90,0.3);
  color: rgba(184,151,90,0.8); border-radius: 2px;
}
.featured-project-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.fstat { background: var(--slate); padding: 32px 28px; display: flex; flex-direction: column; gap: 8px; }
.fstat-value {
  font-family: var(--font-display); font-size: 2.4rem;
  font-weight: 300; color: var(--gold); line-height: 1;
}
.fstat-label { font-size: 0.75rem; color: rgba(255,255,255,0.4); line-height: 1.4; }

/* CTA Strip */
.cta-strip { background: var(--gold); padding: 72px 40px; text-align: center; }
.cta-strip-inner {
  max-width: 680px; margin: 0 auto;
  display: flex; flex-direction: column; align-items: center; gap: 20px;
}
.cta-strip h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300; color: var(--stone); line-height: 1.1;
}
.cta-strip h2 em { font-style: italic; }
.cta-strip p { font-size: 0.92rem; color: rgba(28,26,23,0.65); line-height: 1.75; }

/* ============================================================
   ABOUT PAGE
   ============================================================ */
.bio-layout { display: grid; grid-template-columns: 280px 1fr; gap: 72px; align-items: start; }
.photo-placeholder {
  width: 100%; aspect-ratio: 3/4;
  background: var(--slate);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 12px;
  color: rgba(255,255,255,0.2);
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em;
  border: 1px solid rgba(255,255,255,0.06);
}
.photo-placeholder .photo-icon { font-size: 2.5rem; }
.photo-caption {
  margin-top: 12px; font-family: var(--font-mono);
  font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--warm-gray); text-align: center;
}
.bio-photo img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }

/* Timeline */
.timeline { display: flex; flex-direction: column; }
.timeline-item {
  display: grid; grid-template-columns: 180px 1fr; gap: 40px;
  padding: 40px 0; border-bottom: 1px solid rgba(28,26,23,0.09);
}
.timeline-item:first-child { border-top: 1px solid rgba(28,26,23,0.09); }
.timeline-date {
  font-family: var(--font-mono); font-size: 0.72rem;
  letter-spacing: 0.14em; color: var(--gold); padding-top: 6px;
}
.timeline-year { display: block; font-size: 0.62rem; color: var(--warm-gray); margin-top: 4px; }
.timeline-content h3 {
  font-family: var(--font-display); font-size: 1.45rem;
  font-weight: 400; color: var(--stone); margin-bottom: 6px; line-height: 1.2;
}
.timeline-content .institution {
  font-family: var(--font-mono); font-size: 0.72rem;
  letter-spacing: 0.1em; color: var(--warm-gray); margin-bottom: 14px; display: block;
}
.timeline-content p { font-size: 0.88rem; color: var(--warm-gray); line-height: 1.82; }

/* Values */
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.value-item  { display: flex; flex-direction: column; gap: 12px; }
.value-num   {
  font-family: var(--font-display); font-size: 3rem;
  font-weight: 300; color: rgba(184,151,90,0.22); line-height: 1;
}
.value-item h4 { font-family: var(--font-display); font-size: 1.2rem; font-weight: 400; color: var(--stone); }
.value-item p  { font-size: 0.87rem; color: var(--warm-gray); line-height: 1.8; }

/* Skills */
.skills-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.skill-group-title {
  font-family: var(--font-mono); font-size: 0.68rem;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold);
  margin-bottom: 18px; padding-bottom: 12px;
  border-bottom: 1px solid rgba(184,151,90,0.28);
}
.skill-list li {
  font-size: 0.87rem; color: var(--warm-gray);
  padding: 9px 0; border-bottom: 1px solid rgba(28,26,23,0.06);
  line-height: 1.4; transition: color var(--transition);
}
.skill-list li:hover { color: var(--stone); }

/* ============================================================
   RESEARCH PAGE
   ============================================================ */
.research-areas { display: flex; flex-direction: column; gap: 0; }
.research-area {
  display: grid; grid-template-columns: 72px 1fr; gap: 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.research-area:first-child { border-top: 1px solid rgba(255,255,255,0.06); }
.research-area-num {
  padding: 60px 0 60px 0;
  font-family: var(--font-display); font-size: 1rem;
  font-weight: 300; color: rgba(255,255,255,0.18);
  display: flex; align-items: flex-start; padding-top: 64px;
}
.research-area-body {
  padding: 60px 0 60px 48px;
  border-left: 1px solid rgba(255,255,255,0.06);
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 56px;
}
.research-area-main h3 {
  font-family: var(--font-display); font-size: 2rem;
  font-weight: 300; color: var(--white); line-height: 1.1; margin-bottom: 18px;
}
.research-area-main h3 em { font-style: italic; color: var(--gold); }
.research-area-main p    {
  font-size: 0.9rem; color: rgba(255,255,255,0.5);
  line-height: 1.88; margin-bottom: 16px;
}
.research-area-side      { display: flex; flex-direction: column; gap: 28px; }
.research-side-block h5  {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 10px;
}
.research-side-block ul  { display: flex; flex-direction: column; gap: 6px; }
.research-side-block li  {
  font-size: 0.82rem; color: rgba(255,255,255,0.45);
  line-height: 1.5; padding-left: 14px; position: relative;
}
.research-side-block li::before {
  content: '—'; position: absolute; left: 0;
  color: rgba(184,151,90,0.4); font-size: 0.7rem;
}

/* Methods grid */
.methods-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; }
.method-card  {
  background: var(--parchment); padding: 40px 32px;
  transition: background var(--transition);
}
.method-card:hover { background: var(--cream); }
.method-icon  { font-size: 1.8rem; margin-bottom: 16px; display: block; }
.method-card h4 {
  font-family: var(--font-display); font-size: 1.2rem;
  font-weight: 400; color: var(--stone); margin-bottom: 10px;
}
.method-card p { font-size: 0.84rem; color: var(--warm-gray); line-height: 1.8; }

/* ============================================================
   PROJECTS PAGE
   ============================================================ */
.filter-bar   { display: flex; align-items: center; gap: 8px; margin-bottom: 52px; flex-wrap: wrap; }
.filter-label {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--warm-gray); margin-right: 8px;
}
.filter-btn {
  padding: 7px 18px; background: none;
  border: 1px solid rgba(28,26,23,0.16);
  color: var(--warm-gray); font-family: var(--font-mono);
  font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase;
  border-radius: var(--radius); cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--stone); color: var(--white); border-color: var(--stone);
}
.projects-list { display: flex; flex-direction: column; }
.project-item {
  display: grid; grid-template-columns: 80px 1fr; gap: 40px;
  padding: 52px 0; border-bottom: 1px solid rgba(28,26,23,0.09);
  align-items: start; transition: opacity 0.3s ease;
}
.project-item:first-child { border-top: 1px solid rgba(28,26,23,0.09); }
.project-item.hidden      { display: none; }
.project-num {
  font-family: var(--font-display); font-size: 3rem;
  font-weight: 300; color: rgba(28,26,23,0.1); line-height: 1; padding-top: 6px;
}
.project-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.project-status {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--gold); background: rgba(184,151,90,0.1);
  padding: 3px 10px; border-radius: 2px;
}
.project-status.completed { color: var(--warm-gray); background: rgba(138,130,120,0.1); }
.project-period {
  font-family: var(--font-mono); font-size: 0.65rem;
  color: rgba(28,26,23,0.3); letter-spacing: 0.08em;
}
.project-body h3 {
  font-family: var(--font-display); font-size: 1.75rem;
  font-weight: 400; color: var(--stone); margin-bottom: 14px; line-height: 1.15;
}
.project-body p { font-size: 0.89rem; color: var(--warm-gray); line-height: 1.88; margin-bottom: 20px; }
.key-findings {
  background: var(--parchment); padding: 18px 20px;
  border-left: 2px solid var(--gold); margin-bottom: 20px;
}
.key-findings h5 {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 8px;
}
.key-findings p { font-size: 0.85rem; color: var(--stone); margin-bottom: 0; }
.project-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.project-tags span {
  font-size: 0.7rem; letter-spacing: 0.08em;
  padding: 4px 12px; border: 1px solid rgba(28,26,23,0.14);
  color: var(--warm-gray); border-radius: 2px;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-page-layout { display: grid; grid-template-columns: 1fr 1.4fr; gap: 80px; align-items: start; }
.contact-info h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300; color: var(--white); line-height: 1.1; margin-bottom: 20px;
}
.contact-info h2 em { font-style: italic; color: var(--gold); }
.contact-info .body-text { color: rgba(255,255,255,0.48); margin-bottom: 0; }
.contact-details { margin-top: 44px; display: flex; flex-direction: column; }
.contact-detail-item {
  display: grid; grid-template-columns: 42px 1fr; gap: 16px;
  align-items: center; padding: 18px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: opacity var(--transition);
}
.contact-detail-item:first-child { border-top: 1px solid rgba(255,255,255,0.06); }
.contact-detail-item:hover { opacity: 0.75; }
.detail-icon {
  width: 38px; height: 38px; background: var(--slate);
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius); font-size: 1rem;
}
.detail-text { display: flex; flex-direction: column; gap: 2px; }
.detail-label {
  font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.16em; text-transform: uppercase; color: rgba(255,255,255,0.28);
}
.detail-value { font-size: 0.88rem; color: rgba(255,255,255,0.7); }
.collab-note {
  margin-top: 40px; padding: 20px 24px;
  background: rgba(184,151,90,0.08);
  border: 1px solid rgba(184,151,90,0.2); border-radius: var(--radius);
}
.collab-note h5 {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 8px;
}
.collab-note p { font-size: 0.84rem; color: rgba(255,255,255,0.45); line-height: 1.75; }

.contact-form-wrapper {
  background: var(--slate); padding: 48px;
  border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.05);
}
.contact-form-wrapper h3 {
  font-family: var(--font-display); font-size: 1.6rem;
  font-weight: 300; color: var(--white); margin-bottom: 32px;
}
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.18em; text-transform: uppercase; color: rgba(255,255,255,0.35);
}
.form-group input,
.form-group textarea,
.form-group select {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius); padding: 13px 16px;
  font-family: var(--font-body); font-size: 0.88rem; color: var(--white);
  outline: none; transition: border-color var(--transition), background var(--transition);
  resize: vertical; -webkit-appearance: none;
}
.form-group select option { background: var(--slate); color: var(--white); }
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.2); }
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--gold); background: rgba(255,255,255,0.07); }
.btn-submit {
  padding: 14px 36px; background: var(--gold); color: var(--stone);
  font-family: var(--font-body); font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase;
  border: none; border-radius: var(--radius); cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  align-self: flex-start;
}
.btn-submit:hover { background: var(--gold-light); transform: translateY(-2px); }
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.form-note { font-size: 0.82rem; color: var(--gold); min-height: 20px; }

/* ============================================================
   ARTICLE / DETAIL PAGES
   ============================================================ */
.article-page { background: var(--cream); padding: 80px 40px; }
.article-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 260px 1fr;
  gap: 72px; align-items: start;
}
.article-sidebar {
  position: sticky; top: 84px;
  display: flex; flex-direction: column; gap: 28px;
}
.sidebar-block h5 {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 14px; padding-bottom: 10px;
  border-bottom: 1px solid rgba(184,151,90,0.25);
}
.sidebar-block ul { display: flex; flex-direction: column; gap: 0; }
.sidebar-block li {
  display: flex; justify-content: space-between;
  font-size: 0.82rem; color: var(--warm-gray);
  padding: 8px 0; border-bottom: 1px solid rgba(28,26,23,0.06);
}
.sidebar-block li span:first-child { color: var(--stone); font-weight: 400; }
.sidebar-nav { display: flex; flex-direction: column; gap: 2px; }
.sidebar-nav a {
  font-size: 0.82rem; color: var(--warm-gray); padding: 10px 14px;
  border-radius: var(--radius); transition: all var(--transition);
  border: 1px solid transparent;
}
.sidebar-nav a:hover { color: var(--stone); background: var(--parchment); border-color: rgba(28,26,23,0.08); }
.sidebar-nav a.current { color: var(--gold); background: rgba(184,151,90,0.07); border-color: rgba(184,151,90,0.2); }

/* Article content typography */
.article-content h2 {
  font-family: var(--font-display); font-size: 1.9rem;
  font-weight: 300; color: var(--stone);
  margin: 52px 0 18px; line-height: 1.1;
}
.article-content h2:first-child { margin-top: 0; }
.article-content h3 {
  font-family: var(--font-display); font-size: 1.3rem;
  font-weight: 400; color: var(--stone);
  margin: 32px 0 12px; line-height: 1.2;
}
.article-content p {
  font-size: 0.95rem; color: var(--warm-gray);
  line-height: 1.92; margin-bottom: 20px;
}
.article-content .lead {
  font-family: var(--font-display); font-size: 1.3rem;
  font-weight: 300; color: var(--stone);
  line-height: 1.65; margin-bottom: 32px;
}
.article-list { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
.article-list li {
  font-size: 0.92rem; color: var(--warm-gray);
  padding-left: 20px; position: relative; line-height: 1.72;
}
.article-list li::before {
  content: '→'; position: absolute; left: 0;
  color: var(--gold); font-size: 0.8rem;
}

/* Callout / highlight box */
.article-callout {
  background: var(--parchment); padding: 24px 28px;
  border-left: 3px solid var(--gold);
  margin: 28px 0; border-radius: 0 var(--radius) var(--radius) 0;
}
.article-callout h5 {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 10px;
}
.article-callout p { font-size: 0.88rem; color: var(--stone); line-height: 1.8; margin-bottom: 0; }

/* Data table in articles */
.article-table { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: 0.86rem; }
.article-table th {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--gold); padding: 12px 16px;
  border-bottom: 1px solid rgba(184,151,90,0.3);
  text-align: left; background: var(--parchment);
}
.article-table td {
  padding: 12px 16px; color: var(--warm-gray);
  border-bottom: 1px solid rgba(28,26,23,0.06);
  vertical-align: top; line-height: 1.6;
}
.article-table tr:hover td { background: rgba(245,242,236,0.6); color: var(--stone); }

/* Article navigation (prev/next) */
.article-nav {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2px;
  margin-top: 64px; padding-top: 48px;
  border-top: 1px solid rgba(28,26,23,0.09);
}
.article-nav-item {
  background: var(--parchment); padding: 28px 32px;
  display: flex; flex-direction: column; gap: 8px;
  transition: background var(--transition);
}
.article-nav-item:hover { background: var(--cream); }
.article-nav-item.next { align-items: flex-end; text-align: right; }
.nav-direction {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--warm-gray);
}
.nav-title {
  font-family: var(--font-display); font-size: 1.1rem;
  font-weight: 400; color: var(--stone); line-height: 1.2;
  transition: color var(--transition);
}
.article-nav-item:hover .nav-title { color: var(--gold); }

/* ============================================================
   FOOTER
   ============================================================ */
footer { background: #100f0c; padding: 64px 40px 48px; }
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.05);
  margin-bottom: 32px;
}
.footer-brand  { display: flex; flex-direction: column; gap: 8px; }
.footer-logo   { font-family: var(--font-display); font-size: 1.6rem; font-weight: 300; color: var(--white); }
.footer-tagline { font-size: 0.78rem; color: rgba(255,255,255,0.3); line-height: 1.6; }
.footer-nav h5,
.footer-contact h5 {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 16px;
}
.footer-nav ul  { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a   { font-size: 0.82rem; color: rgba(255,255,255,0.4); transition: color var(--transition); }
.footer-nav a:hover { color: rgba(255,255,255,0.8); }
.footer-contact p { font-size: 0.82rem; color: rgba(255,255,255,0.4); line-height: 1.7; }
.footer-contact a { color: rgba(184,151,90,0.7); transition: color var(--transition); }
.footer-contact a:hover { color: var(--gold); }
.footer-bottom {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.footer-copy   { font-family: var(--font-mono); font-size: 0.65rem; color: rgba(255,255,255,0.18); letter-spacing: 0.1em; }
.footer-credit { font-family: var(--font-mono); font-size: 0.62rem; color: rgba(255,255,255,0.1); letter-spacing: 0.08em; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 960px) {
  .nav-links   { display: none; }
  .menu-toggle { display: flex; }

  .summary-grid { grid-template-columns: 1fr; }
  .bio-layout   { grid-template-columns: 1fr; gap: 40px; }
  .photo-placeholder { aspect-ratio: 4/3; }

  .featured-project-inner { grid-template-columns: 1fr; gap: 48px; }
  .featured-project-stats { grid-template-columns: repeat(2,1fr); }

  .values-grid  { grid-template-columns: 1fr; gap: 32px; }
  .research-area { grid-template-columns: 1fr; }
  .research-area-num  { padding: 32px 0 0; }
  .research-area-body { grid-template-columns: 1fr; gap: 32px; border-left: none; padding-left: 0; }
  .methods-grid { grid-template-columns: 1fr; gap: 2px; }
  .project-item { grid-template-columns: 1fr; gap: 12px; }
  .project-num  { font-size: 2rem; }
  .contact-page-layout { grid-template-columns: 1fr; gap: 48px; }
  .contact-form-wrapper { padding: 32px 24px; }
  .skills-grid  { grid-template-columns: repeat(2,1fr); gap: 28px; }
  .timeline-item { grid-template-columns: 1fr; gap: 6px; }
  .footer-inner  { grid-template-columns: 1fr; gap: 32px; }

  .article-inner { grid-template-columns: 1fr; gap: 40px; }
  .article-sidebar { position: static; }
  .article-nav { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  section { padding: 64px 20px; }
  .page-hero { padding: 120px 20px 60px; }
  #hero { padding: 100px 20px 80px; }
  #navbar { padding: 0 20px; }
  .mobile-menu a { padding: 13px 20px; }
  .split-layout { grid-template-columns: 1fr; gap: 16px; }
  .split-label  { flex-direction: row; align-items: center; }
  .form-row     { grid-template-columns: 1fr; }
  .hero-stat-bar { flex-wrap: wrap; gap: 20px; }
  .stat-divider  { display: none; }
  .skills-grid   { grid-template-columns: 1fr; }
  .article-page  { padding: 56px 20px; }
  footer { padding: 48px 20px 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 6px; }
}

/* ============================================================
   BLOG SECTION
   ============================================================ */
.blog-section { background: var(--parchment); }

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-bottom: 40px;
}

.blog-card {
  background: var(--cream);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: background var(--transition);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(28,26,23,0.07);
}

.blog-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--gold);
  transition: width 0.4s ease;
}

.blog-card:hover { background: var(--white); }
.blog-card:hover::after { width: 100%; }

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.blog-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  background: rgba(184,151,90,0.1);
  padding: 3px 10px;
  border-radius: 2px;
}

.blog-date {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--warm-gray);
}

.blog-card h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--stone);
  line-height: 1.2;
  flex: 1;
}

.blog-card p {
  font-size: 0.86rem;
  color: var(--warm-gray);
  line-height: 1.8;
}

.blog-read {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  transition: letter-spacing var(--transition);
}

.blog-card:hover .blog-read { letter-spacing: 0.18em; }

.blog-footer {
  display: flex;
  justify-content: center;
  margin-top: 8px;
}

/* Blog responsive */
@media (max-width: 960px) {
  .blog-grid { grid-template-columns: 1fr; }
}