/* ===========================================================
   Naiti S. Bhatt — Format A: Light Editorial Theme
   Palette derived from user-supplied hex codes:
   pinks: #FC9FDE (deep) #FAB4E4 (mid) #FFD1EF (light)
   greens: #9FFCAE (deep) #B4FABC (mid) #D1FFD4 (light) #D1FFE2 (minty)
   =========================================================== */

:root {
  --pink-deep: #FC9FDE;
  --pink-mid: #FAB4E4;
  --pink-light: #FFD1EF;
  --green-deep: #9FFCAE;
  --green-mid: #B4FABC;
  --green-light: #D1FFD4;
  --green-mint: #D1FFE2;

  /* accessible derivatives for text/links on white */
  --pink-ink: #A6238B;
  --green-ink: #1D7A3D;

  --bg: #FFFFFF;
  --bg-alt: #FBF8FA;
  --surface: #FFFFFF;
  --border: #ECE7EA;
  --text: #1B1B1E;
  --text-muted: #63606A;

  --radius: 14px;
  --radius-sm: 8px;
  --max-width: 980px;
  --shadow: 0 1px 2px rgba(20,20,30,0.04), 0 8px 24px -12px rgba(20,20,30,0.10);

  --font-head: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="dark"] {
  --bg: #0B0D10;
  --bg-alt: #14161B;
  --surface: #15171C;
  --border: rgba(255, 255, 255, 0.09);
  --text: #F2F1F4;
  --text-muted: #9A98A3;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 8px 24px -12px rgba(0, 0, 0, 0.55);
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

[data-theme="dark"] body {
  background-image:
    radial-gradient(circle at 15% 0%, rgba(252, 159, 222, 0.08), transparent 40%),
    radial-gradient(circle at 85% 15%, rgba(159, 252, 174, 0.06), transparent 40%);
}

[data-theme="dark"] a:not(.btn) { color: var(--pink-deep); }
[data-theme="dark"] a:not(.btn):hover { color: var(--green-deep); }
[data-theme="dark"] .btn-primary { color: #14060f; }
[data-theme="dark"] a.brand { color: var(--text); }
[data-theme="dark"] .nav-links a { color: var(--text); }
[data-theme="dark"] .nav-links a:hover { color: var(--text); }
[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3, [data-theme="dark"] h4 { color: #fff; }
[data-theme="dark"] .eyebrow { background: rgba(159, 252, 174, 0.10); color: var(--green-deep); border: 1px solid rgba(159, 252, 174, 0.25); }
[data-theme="dark"] .tag { background: rgba(159, 252, 174, 0.10); color: var(--green-deep); border: 1px solid rgba(159, 252, 174, 0.22); }
[data-theme="dark"] .tag.alt { background: rgba(252, 159, 222, 0.10); color: var(--pink-deep); border: 1px solid rgba(252, 159, 222, 0.22); }
[data-theme="dark"] .section-head .kicker { color: var(--pink-deep); }
[data-theme="dark"] .cv-block h2 { border-bottom-color: rgba(255, 255, 255, 0.12); }
[data-theme="dark"] .card:hover { border-color: rgba(255, 255, 255, 0.2); }
[data-theme="dark"] .site-header { background: rgba(11, 13, 16, 0.75); }
[data-theme="dark"] .btn-outline:hover { background: rgba(159, 252, 174, 0.08); }
[data-theme="dark"] .hero-avatar { border-color: var(--pink-mid); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  margin-left: 8px;
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--pink-deep); }
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

a { color: var(--pink-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.1rem, 4vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1.1em; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Nav ---------- */
#nav-slot { }

.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(10px);
  z-index: 50;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--text);
}
.brand:hover { text-decoration: none; opacity: 0.75; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}

.nav-links a {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 500;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover { text-decoration: none; border-bottom-color: var(--pink-deep); }
.nav-links a.active { border-bottom-color: var(--green-deep); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .nav-links.open { max-height: 400px; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 14px 24px; border-bottom: 1px solid var(--border); width: 100%; }
}

/* ---------- Hero / Home ---------- */
.hero {
  padding: 72px 0 48px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
}
.hero-avatar {
  width: 148px;
  height: 148px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--pink-light);
  box-shadow: var(--shadow);
}
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green-ink);
  background: var(--green-mint);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.hero p.lede {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 60ch;
}

@media (max-width: 640px) {
  .hero-grid { grid-template-columns: 1fr; text-align: left; }
  .hero-avatar { order: -1; width: 96px; height: 96px; }
}

/* ---------- Buttons / tags ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--pink-deep);
  color: #21121c;
}
.btn-primary:hover { background: var(--pink-mid); }
.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--green-deep); background: var(--green-mint); }

.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }

.tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 11px;
  border-radius: 999px;
  background: var(--green-mint);
  color: var(--green-ink);
  margin: 0 6px 6px 0;
}
.tag.alt { background: var(--pink-light); color: var(--pink-ink); }

/* ---------- Sections / Cards ---------- */
section { padding: 56px 0; }
section + section { border-top: 1px solid var(--border); }

.section-head { margin-bottom: 32px; }
.section-head .kicker {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--pink-ink);
  display: block;
  margin-bottom: 6px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.card h3 { margin-bottom: 8px; }
.card .meta { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 10px; }
.card p.desc { color: var(--text-muted); flex: 1; }
.card-links { margin-top: 14px; display: flex; gap: 14px; font-size: 0.9rem; font-weight: 600; }

.card-accent-pink { border-top: 4px solid var(--pink-deep); }
.card-accent-green { border-top: 4px solid var(--green-deep); }

/* ---------- CV ---------- */
.cv-block { margin-bottom: 40px; }
.cv-block h2 {
  border-bottom: 2px solid var(--green-mint);
  padding-bottom: 8px;
  margin-bottom: 18px;
}
.cv-entry { margin-bottom: 18px; }
.cv-entry .role { font-weight: 700; }
.cv-entry .org a { font-weight: 600; }
.cv-entry .dates { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 6px; }
.cv-entry ul { margin: 8px 0 0 18px; padding: 0; color: var(--text-muted); }
.cv-entry ul li { margin-bottom: 4px; }

.skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px,1fr)); gap: 18px; }
.skills-grid h4 { margin: 0 0 8px; font-size: 0.95rem; }
.skills-grid p { color: var(--text-muted); font-size: 0.92rem; margin: 0; }

/* ---------- Photos ---------- */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.photo-grid figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, var(--pink-light), var(--green-mint));
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.photo-grid img { width: 100%; height: 100%; object-fit: cover; display: block; }
.photo-placeholder {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 20px;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 28px;
}
.contact-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: left;
}
.contact-card .label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); margin-bottom: 6px; display: block; }
.contact-card a { font-weight: 600; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0 48px;
  color: var(--text-muted);
  font-size: 0.88rem;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.social-row { display: flex; gap: 16px; }
.social-row a { color: var(--text-muted); font-weight: 600; }
.social-row a:hover { color: var(--pink-ink); }

/* ---------- misc ---------- */
.pill-divider {
  height: 4px;
  width: 64px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--pink-deep), var(--green-deep));
  margin: 8px 0 28px;
}