/* =========================================================
   RENEW BHAGWAT — PORTFOLIO
   Design language: PCB solder-mask board + copper trace + gold contact
   ========================================================= */

:root {
  /* -- board / surfaces -- */
  --board:        #07111d;
  --board-deep:    #020711;
  --board-raised: #0e1830;
  --board-line:   rgba(124, 147, 214, 0.28);

  /* -- blue accents -- */
  --copper:        #82caff;
  --copper-bright: #82caff;
  --gold:          #bed9f4;
  --gold-soft:     rgba(130, 202, 255, 0.25);

  /* -- text -- */
  --silk:          #ffffff;
  --silk-dim:      #f5f7ff;
  --muted:         #f1f4ff;

  /* -- type -- */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --radius: 10px;
  --edge: 1px solid var(--board-line);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background:
    radial-gradient(980px 640px at 8% -10%, rgba(130, 202, 255, 0.22), transparent 68%),
    radial-gradient(900px 760px at 100% 8%, rgba(130, 202, 255, 0.18), transparent 60%),
    linear-gradient(135deg, #030711 0%, #07111d 40%, #0d1832 100%);
  color: var(--silk);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  position: relative;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  pointer-events: none;
  z-index: 0;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.45;
  animation: drift 10s ease-in-out infinite alternate;
}

body::before {
  width: 280px;
  height: 280px;
  left: -80px;
  bottom: 100px;
  background: radial-gradient(circle, rgba(130, 202, 255, 0.28), transparent 70%);
}

body::after {
  width: 320px;
  height: 320px;
  right: -90px;
  top: 120px;
  background: radial-gradient(circle, rgba(190, 217, 244, 0.18), transparent 70%);
  animation-direction: alternate-reverse;
}

@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(20px, -25px, 0) scale(1.08); }
}

::selection {
  background: var(--copper-bright);
  color: var(--board-deep);
}

a {
  color: inherit;
  text-decoration: none;
}

/* faint fiberglass board texture */
.board-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.05;
  background-image:
    linear-gradient(var(--board-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--board-line) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at 50% 20%, black, transparent 80%);
}

/* =========================================================
   SIGNATURE ELEMENT — the schematic trace rail
   ========================================================= */
.trace-rail {
  position: absolute;
  top: 0;
  left: 32px;
  width: 3px;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}
.trace-line line {
  stroke: url(#none);
  stroke: var(--board-line);
  stroke-width: 2;
}
.trace-rail svg { display: block; height: 100%; }
.trace-rail::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 220px;
  background: linear-gradient(180deg, transparent, var(--copper-bright), transparent);
  animation: trace-pulse 6s ease-in-out infinite;
  filter: drop-shadow(0 0 6px var(--copper));
}
@keyframes trace-pulse {
  0%   { transform: translateY(-220px); opacity: 0; }
  15%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { transform: translateY(110vh); opacity: 0; }
}

@keyframes floatBadge {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.via-marker, .hero__via {
  position: relative;
  left: 32px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
  z-index: 2;
}
.via-dot {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--copper-bright), var(--copper) 60%, #7a4e22 100%);
  box-shadow: 0 0 0 4px var(--board), 0 0 14px 2px var(--gold-soft);
}
.via-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

/* =========================================================
   NAV
   ========================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px 18px 64px;
  background: rgba(3, 7, 17, 0.8);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(124, 147, 214, 0.22);
  box-shadow: 0 8px 30px -20px rgba(0, 0, 0, 0.8);
}
.pad-chip {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--board-deep);
  background: linear-gradient(135deg, var(--gold), var(--copper-bright));
  padding: 6px 12px;
  border-radius: 999px;
  letter-spacing: 0.04em;
  box-shadow: 0 8px 20px -10px rgba(130, 202, 255, 0.55);
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--silk-dim);
}
.nav__links a { transition: color 0.2s ease; }
.nav__links a:hover { color: var(--copper-bright); }
.nav__cta {
  padding: 8px 16px;
  border: 1px solid var(--copper);
  border-radius: 6px;
  color: var(--copper-bright) !important;
}
.nav__cta:hover {
  background: var(--copper);
  color: var(--board-deep) !important;
}

/* =========================================================
   LAYOUT / SECTIONS
   ========================================================= */
main {
  position: relative;
  z-index: 2;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 48px 0 96px;
}

.section {
  padding: 110px 0 36px;
  border-bottom: var(--edge);
}
.section:last-of-type { border-bottom: none; }

.section__head { margin-bottom: 44px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--copper-bright);
  letter-spacing: 0.04em;
  margin: 0 0 10px;
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.2vw, 2.45rem);
  font-weight: 600;
  margin: 0;
  color: var(--silk);
  line-height: 1.15;
}

/* reveal-on-scroll */
.reveal {
  opacity: 0;
  transform: translateY(28px) scale(0.98);
  transition: opacity 0.7s ease, transform 0.8s cubic-bezier(.2,.8,.2,1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  padding: 138px 0 108px;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: -40px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(130, 202, 255, 0.25), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  left: -60px;
  bottom: 40px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(130, 202, 255, 0.18), transparent 72%);
  filter: blur(18px);
  pointer-events: none;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  margin-bottom: 18px;
  border-radius: 999px;
  background: rgba(124, 147, 214, 0.12);
  border: 1px solid rgba(131, 153, 220, 0.24);
  color: var(--silk-dim);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  animation: floatBadge 4.5s ease-in-out infinite;
}
.hero__badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--copper-bright), var(--gold));
  box-shadow: 0 0 0 4px rgba(131, 153, 220, 0.14);
}
.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 8vw, 6rem);
  font-weight: 700;
  line-height: 1.02;
  margin: 0 0 22px;
  background: linear-gradient(125deg, #ffffff 0%, var(--copper-bright) 45%, #bed9f4 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 20px 54px rgba(130, 202, 255, 0.16);
}
.hero__role {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  color: var(--copper-bright);
  margin: 0 0 20px;
  max-width: 680px;
}
.hero__sub {
  font-size: 1.08rem;
  color: var(--silk-dim);
  max-width: 660px;
  margin: 0 0 36px;
  line-height: 1.8;
}
.hero__actions {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.btn {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 13px 24px;
  border-radius: 999px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  display: inline-block;
}
.btn--primary {
  background: linear-gradient(135deg, var(--copper-bright), #b7c4ff);
  color: var(--board-deep);
  font-weight: 600;
  box-shadow: 0 12px 30px -12px rgba(130, 202, 255, 0.55);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px -12px rgba(131, 153, 220, 0.6); }
.btn--ghost {
  border: 1px solid rgba(124, 147, 214, 0.28);
  color: var(--silk-dim);
  background: rgba(124, 147, 214, 0.08);
}
.btn--ghost:hover { border-color: var(--copper-bright); color: var(--copper-bright); }

.hero__meta {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted);
}
.dot-sep { margin: 0 10px; color: rgba(124, 147, 214, 0.34); }

/* =========================================================
   SKILLS — component legend
   ========================================================= */
.legend-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px 48px;
}
.legend-group h3 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--board-line);
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}
.chip {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 7px 13px;
  border-radius: 6px;
  background: var(--board-raised);
  border: 1px solid var(--board-line);
  color: var(--silk-dim);
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.chip:hover {
  border-color: var(--copper);
  color: var(--copper-bright);
  transform: translateY(-2px);
}

/* =========================================================
   EXPERIENCE — IC / schematic cards
   ========================================================= */
.schematic-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.ic-card {
  position: relative;
  background: linear-gradient(145deg, rgba(14, 24, 48, 0.96), rgba(7, 17, 29, 0.96));
  border: 1px solid rgba(124, 147, 214, 0.2);
  border-radius: var(--radius);
  padding: 30px 34px;
  overflow: hidden;
  box-shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.ic-card:hover,
.project-card:hover,
.stat:hover,
.contact-card:hover {
  transform: translateY(-4px);
}
.ic-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  padding: 1px;
  background: linear-gradient(120deg, var(--copper) 0%, transparent 30%, transparent 70%, var(--gold) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.35;
  pointer-events: none;
}
.ic-card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
  flex-wrap: wrap;
  gap: 8px;
}
.ic-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--copper-bright);
  letter-spacing: 0.05em;
  background: rgba(200, 129, 63, 0.1);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid rgba(200, 129, 63, 0.25);
}
.ic-date {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted);
}
.ic-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin: 4px 0 8px;
  color: var(--silk);
}
.ic-stack {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0 0 18px;
}
.ic-points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ic-points li {
  position: relative;
  padding-left: 20px;
  color: var(--silk-dim);
  font-size: 0.95rem;
}
.ic-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 2px;
  background: var(--copper-bright);
}
.ic-points strong { color: var(--gold); font-weight: 600; }

/* =========================================================
   PROJECTS
   ========================================================= */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.project-card {
  background: linear-gradient(145deg, rgba(14, 24, 48, 0.94), rgba(7, 17, 29, 0.96));
  border: 1px solid rgba(124, 147, 214, 0.2);
  border-radius: var(--radius);
  padding: 26px 28px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.8);
}
.project-card:hover {
  border-color: var(--copper-bright);
  box-shadow: 0 16px 34px -16px rgba(130, 202, 255, 0.38);
}
.project-card__head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
}
.project-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 0 0 8px;
}
.project-desc {
  color: var(--silk-dim);
  font-size: 0.92rem;
  margin-top: 10px;
}

/* =========================================================
   ACHIEVEMENTS / STATS
   ========================================================= */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 36px;
}
.stat {
  text-align: left;
  padding: 24px 22px;
  background: linear-gradient(145deg, rgba(14, 24, 48, 0.95), rgba(7, 17, 29, 0.96));
  border: 1px solid rgba(124, 147, 214, 0.2);
  border-radius: var(--radius);
  box-shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.8);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.stat__num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--copper-bright);
}
.stat__plus {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--gold);
  margin-left: 2px;
}
.stat__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted);
  margin-top: 8px;
}
.platform-links {
  display: flex;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.platform-links a {
  color: var(--copper-bright);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.platform-links a:hover { border-color: var(--copper-bright); }

/* =========================================================
   EDUCATION
   ========================================================= */
.edu-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.edu-item {
  padding: 20px 0;
  border-bottom: 1px dashed var(--board-line);
}
.edu-item:last-child { border-bottom: none; }
.edu-item__top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
}
.edu-item h3 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  margin: 0;
  color: var(--silk);
}
.edu-sub {
  color: var(--silk-dim);
  font-size: 0.9rem;
  margin: 6px 0 4px;
}
.edu-score {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--gold);
  margin: 0;
}

/* =========================================================
   CONTACT
   ========================================================= */
.section--contact { padding-bottom: 80px; }
.contact-copy {
  color: var(--silk-dim);
  max-width: 520px;
  margin: -18px 0 32px;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.contact-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 22px;
  background: linear-gradient(145deg, rgba(14, 24, 48, 0.95), rgba(7, 17, 29, 0.96));
  border: 1px solid rgba(124, 147, 214, 0.2);
  border-radius: var(--radius);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 16px 36px -24px rgba(0, 0, 0, 0.8);
}
.contact-card:hover {
  border-color: var(--copper-bright);
  box-shadow: 0 16px 34px -16px rgba(130, 202, 255, 0.35);
}
.contact-card__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.contact-card__value {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--copper-bright);
  word-break: break-word;
}

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  position: relative;
  z-index: 2;
  max-width: 880px;
  margin: 0 auto;
  padding: 28px 48px 48px 96px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 8px;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 760px) {
  .nav { padding: 16px 20px; }
  .nav__links { gap: 16px; font-size: 0.72rem; }
  main { padding: 0 20px 0 48px; }
  .footer { padding: 24px 20px 40px 48px; }
  .trace-rail { left: 20px; }
  .via-marker, .hero__via { left: 20px; }
  .legend-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 110px; }
}

@media (max-width: 480px) {
  .nav__links a:not(.nav__cta) { display: none; }
}

/* keyboard focus visibility */
a:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}