/* ─────────────────────────────────────────────
   PUJAN PANT — Research Narrative Site
   Aesthetic: Dark Scholar · Warm Academic
   Fonts: Cormorant Garamond · Jost
   ───────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=Jost:wght@300;400;500&display=swap');

/* ── TOKENS ─────────────────────────────────── */
:root {
  --bg:         #0d0c0a;
  --bg-alt:     #121109;
  --bg-card:    #171510;
  --text:       #e4dbd0;
  --text-dim:   #7d766e;
  --text-muted: #4a4640;
  --accent:     #c8a76a;
  --accent-dim: #6b5832;
  --rule:       #252218;
  --max:        720px;
  --pad-x:      clamp(1.5rem, 5vw, 5rem);
}

/* ── RESET ──────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
img  { display: block; max-width: 100%; }
a    { color: inherit; text-decoration: none; }

/* ── BASE ───────────────────────────────────── */
body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Jost', sans-serif;
  font-weight: 300;
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.85;
  overflow-x: hidden;
}

/* subtle grain */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.35;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n' x='0' y='0'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E");
}

/* ── TYPOGRAPHY ─────────────────────────────── */
h1, h2, h3 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

/* ── NAV ────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem var(--pad-x);
  background: linear-gradient(to bottom, var(--bg) 40%, transparent);
  transition: background 0.4s ease;
}

.nav-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-transform: uppercase;
  font-size: 0.8rem;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.25s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px; height: 1px;
  background: var(--text-dim);
  transition: all 0.3s;
}

/* ── HERO ───────────────────────────────────── */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem var(--pad-x) 5rem;
  text-align: center;
  position: relative;
}

/* faint radial glow behind hero */
.hero::before {
  content: '';
  position: absolute;
  top: 40%; left: 50%;
  transform: translate(-50%, -50%);
  width: min(600px, 80vw);
  height: min(600px, 80vw);
  background: radial-gradient(ellipse, rgba(200, 167, 106, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 680px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.4rem;
}

.hero-prelude {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero-name {
  font-size: clamp(3.5rem, 10vw, 6.5rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1;
}

.hero-tagline {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.2rem, 3.2vw, 1.65rem);
  font-style: italic;
  font-weight: 300;
  color: var(--accent);
  line-height: 1.5;
}

.hero-sub {
  font-size: clamp(0.9rem, 2vw, 1rem);
  color: var(--text-dim);
  max-width: 520px;
  line-height: 1.9;
}

.scroll-hint {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2rem;
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.3s;
  animation: bobDown 2.5s ease-in-out infinite;
}

.scroll-hint:hover { color: var(--accent); }

@keyframes bobDown {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(6px); }
}

/* ── SECTIONS ───────────────────────────────── */
.section {
  padding: clamp(5rem, 10vw, 9rem) var(--pad-x);
  position: relative;
  border-top: 1px solid var(--rule);
}

.section-alt { background: var(--bg-alt); }

.section-wrap {
  max-width: var(--max);
  margin: 0 auto;
  position: relative;
}

/* large decorative number */
.section-label {
  position: absolute;
  top: -1.2rem; right: 0;
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(5rem, 14vw, 9rem);
  font-weight: 300;
  color: var(--text-muted);
  opacity: 0.18;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.04em;
}

.section-body { max-width: var(--max); margin: 0 auto; }

/* accent line before title */
.section-title {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 300;
  color: var(--text);
  margin-bottom: 2.5rem;
  padding-bottom: 1rem;
  position: relative;
}

.section-title::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 40px; height: 1px;
  background: var(--accent);
}

/* ── PROSE ──────────────────────────────────── */
.prose p {
  color: var(--text-dim);
  margin-bottom: 1.4rem;
}

.prose p:last-child { margin-bottom: 0; }

/* ── PULL QUOTE ─────────────────────────────── */
.pull-quote {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.1rem, 3vw, 1.45rem);
  font-style: italic;
  font-weight: 300;
  color: var(--accent);
  line-height: 1.6;
  border-left: 2px solid var(--accent-dim);
  padding-left: 1.6rem;
  margin: 0 0 2.5rem;
}

/* ── INTERESTS ──────────────────────────────── */
.interests {
  display: flex;
  flex-direction: column;
  gap: 2.2rem;
}

.interest {
  display: grid;
  grid-template-columns: 1.5rem 1fr;
  gap: 1.2rem;
  align-items: start;
}

.interest-dash {
  color: var(--accent);
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.2rem;
  line-height: 1.6;
  padding-top: 0.1rem;
}

.interest-content h3 {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  font-weight: 400;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.interest-content p {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ── PROJECTS ───────────────────────────────── */
.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.project {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  padding: 2rem;
  transition: border-color 0.35s ease, transform 0.35s ease;
}

.project:hover {
  border-color: var(--accent-dim);
  transform: translateY(-3px);
}

.project-tag {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.8rem;
}

.project h3 {
  font-size: clamp(1.1rem, 2.8vw, 1.4rem);
  font-weight: 400;
  color: var(--text);
  margin-bottom: 1rem;
}

.project p {
  color: var(--text-dim);
  font-size: 0.93rem;
  line-height: 1.85;
}

.project-status {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ── INSPIRATION ────────────────────────────── */
.inspirations {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.insp-item h3 {
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  font-weight: 400;
  color: var(--accent);
  margin-bottom: 0.6rem;
  letter-spacing: 0.01em;
}

.insp-item p {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.85;
}

/* ── VISION ─────────────────────────────────── */
.vision-prose p {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.1rem, 3vw, 1.4rem);
  font-weight: 300;
  font-style: italic;
  color: var(--text-dim);
  line-height: 1.75;
  margin-bottom: 1.4rem;
}

/* ── CONTACT ────────────────────────────────── */
.contact-section { text-align: center; }

.contact-section .section-body { text-align: center; }

.contact-section .section-title::before {
  left: 50%;
  transform: translateX(-50%);
}

.contact-sub {
  color: var(--text-dim);
  max-width: 480px;
  margin: 0 auto 2.5rem;
  font-size: 0.95rem;
  line-height: 1.85;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.5rem;
  justify-content: center;
}

.contact-link {
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  border-bottom: 1px solid var(--accent-dim);
  padding-bottom: 2px;
  transition: color 0.25s, border-color 0.25s;
}

.contact-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ── FOOTER ─────────────────────────────────── */
.footer {
  padding: 2.5rem var(--pad-x);
  border-top: 1px solid var(--rule);
  text-align: center;
}

.footer p {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ── SCROLL ANIMATIONS ──────────────────────── */

/* hero enter animations */
.animate-up {
  opacity: 0;
  transform: translateY(22px);
  animation: slideUp 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.d1 { animation-delay: 0.15s; }
.d2 { animation-delay: 0.35s; }
.d3 { animation-delay: 0.55s; }
.d4 { animation-delay: 0.75s; }

@keyframes slideUp {
  to { opacity: 1; transform: translateY(0); }
}

/* scroll reveal — parent */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.85s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.85s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* staggered children */
.reveal-child {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-child.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-child:nth-child(1) { transition-delay: 0.1s; }
.reveal-child:nth-child(2) { transition-delay: 0.22s; }
.reveal-child:nth-child(3) { transition-delay: 0.34s; }
.reveal-child:nth-child(4) { transition-delay: 0.46s; }

/* ── RESPONSIVE ─────────────────────────────── */
@media (max-width: 700px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--bg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    z-index: 190;
  }

  .nav-links.open { display: flex; }

  .nav-links a {
    font-size: 1rem;
    letter-spacing: 0.15em;
  }

  .nav-toggle { display: flex; }

  .section-label {
    top: auto;
    bottom: 1rem;
    font-size: clamp(4rem, 20vw, 7rem);
  }

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

  .pull-quote {
    padding-left: 1.2rem;
  }
}

@media (max-width: 420px) {
  .hero-name { font-size: 3.2rem; }
}

/* ── REDUCED MOTION ─────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .animate-up, .reveal, .reveal-child {
    opacity: 1;
    transform: none;
    animation: none;
    transition: none;
  }
  .scroll-hint { animation: none; }
}