/* ══════════════════════════════════════════════
   RENUKA DIXIT — BIOMEDICAL PORTFOLIO v3
   Hybrid Theme: PCB Hardware + Bioluminescence
   Color: Titanium Gold + Bio Violet on Black
══════════════════════════════════════════════ */

:root {
  --bg:       #05060a;
  --bg2:      #090b10;
  --bg3:      #0d1018;
  --surface:  #111520;
  --surface2: #191e2e;

  /* TITANIUM GOLD — main accent (kept as --red for minimal change cascade) */
  --red:      #c9920a;
  --red2:     #f0b429;
  --red-dim:  rgba(201, 146, 10, 0.14);
  --red-glow: rgba(201, 146, 10, 0.32);

  /* BIO VIOLET — secondary from bioluminescence */
  --bio:      #9b6fe0;
  --bio-dim:  rgba(155, 111, 224, 0.12);

  --steel:    #9baabb;
  --steel2:   #b8ccd8;
  --white:    #f0f4f8;

  --border:   rgba(201, 146, 10, 0.2);
  --border2:  rgba(255,255,255,0.06);
  --border3:  rgba(255,255,255,0.03);

  /* warm white text — suits gold better than cool white */
  --text:     #ede8dc;
  --text2:    #7a8898;
  --text3:    #3a4858;

  --font-display: 'Syne', sans-serif;
  --font-mono:    'Space Mono', monospace;

  /* category colors */
  --c-edu:       #c9920a;
  --c-research:  #3b82f6;
  --c-industry:  #9b6fe0;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-display);
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  /* PCB dot grid */
  background-image: radial-gradient(rgba(201,146,10,0.07) 1px, transparent 1px);
  background-size: 28px 28px;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--red); }

/* ══ BG CANVAS — bioluminescent neural network ══ */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;        /* FIX */
  pointer-events: none; opacity: 0.85;      /* stronger */
}

/* vignette — darkens edges so network fades into the page naturally */
#bg-canvas::after {
  content: ''; position: fixed; inset: 0;
  background: radial-gradient(ellipse 80% 80% at 50% 50%, transparent 40%, rgba(5,6,10,0.85) 100%);
  pointer-events: none; z-index: 0;
}

/* separate vignette div since canvas can't use ::after */
.bg-vignette {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse 75% 75% at 50% 50%, transparent 35%, rgba(5,6,10,0.8) 100%);
}

/* ══ NAVBAR ══ */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem 5vw;
  background: rgba(5,6,10,0.82);
  backdrop-filter: blur(22px);
  border-bottom: 1px solid var(--border2);
  transition: border-color 0.3s;
}
#navbar.scrolled { border-bottom-color: rgba(201,146,10,0.28); }
.nav-logo {
  display: flex; align-items: center; gap: 0.7rem;
  font-family: var(--font-mono); font-size: 1rem;
  font-weight: 700; color: var(--red);
  letter-spacing: 0.1em;
}
.logo-pulse { width: 44px; height: 22px; color: var(--red); }
.nav-right { display: flex; align-items: center; gap: 2rem; }
.nav-email {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--text2); letter-spacing: 0.05em;
  transition: color 0.2s;
}
.nav-email:hover { color: var(--red); }
.nav-cv {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--red); border: 1px solid var(--red);
  padding: 0.4rem 1rem; transition: background 0.2s, box-shadow 0.2s;
}
.nav-cv:hover { background: var(--red-dim); box-shadow: 0 0 12px var(--red-glow); }

/* ══ SIDE NAV ══ */
#side-nav {
  position: fixed; right: 2rem; top: 50%;
  transform: translateY(-50%); z-index: 90;
  display: flex; flex-direction: column; gap: 1rem;
}
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text3); display: block;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  position: relative;
}
.dot::after {
  content: attr(data-label);
  position: absolute; right: 1.4rem; top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono); font-size: 0.62rem;
  color: var(--red); background: var(--bg2);
  padding: 0.15rem 0.5rem; border: 1px solid var(--border);
  white-space: nowrap; opacity: 0; pointer-events: none;
  transition: opacity 0.2s;
}
.dot:hover::after, .dot.active::after { opacity: 1; }
.dot.active, .dot:hover {
  background: var(--red); transform: scale(1.5);
  box-shadow: 0 0 8px var(--red-glow);
}

/* ══ HERO ══ */
#hero {
  min-height: 100vh; display: flex; flex-direction: column;
  justify-content: center; padding: 8rem 8vw 0;
  position: relative; z-index: 1;
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4rem; align-items: center; padding-bottom: 3rem;
}
.hero-status {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-mono); font-size: 0.68rem;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--red);
  background: var(--red-dim); border: 1px solid var(--border);
  padding: 0.4rem 1rem; margin-bottom: 2rem;
  opacity: 0; animation: fadeUp 0.6s 0.2s forwards;
}
.pulse-dot {
  width: 6px; height: 6px; background: var(--red2);
  border-radius: 50%; animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 0 var(--red-glow); }
  50%      { box-shadow: 0 0 0 6px transparent; }
}
.hero-name {
  font-size: clamp(3.5rem, 8vw, 7.5rem); font-weight: 800;
  line-height: 0.88; letter-spacing: -0.02em;
  display: flex; flex-direction: column;
  opacity: 0; animation: fadeUp 0.7s 0.4s forwards;
}
.line-reveal.delay-1 { color: var(--red); }
.hero-title-wrap {
  display: flex; align-items: center; gap: 1rem;
  margin: 1.6rem 0;
  opacity: 0; animation: fadeUp 0.7s 0.6s forwards;
}
.hero-title-line {
  width: 50px; height: 1px;
  background: linear-gradient(to right, var(--red), transparent);
}
.hero-title-text {
  font-family: var(--font-mono); font-size: 0.75rem;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--steel);
}
.hero-desc {
  font-size: 1rem; line-height: 1.8; color: var(--text2);
  max-width: 44ch; font-weight: 400;
  opacity: 0; animation: fadeUp 0.7s 0.8s forwards;
}
.hero-cta {
  display: flex; gap: 1rem; margin-top: 2.5rem; flex-wrap: wrap;
  opacity: 0; animation: fadeUp 0.7s 1s forwards;
}
.btn-main {
  font-family: var(--font-mono); font-size: 0.75rem;
  padding: 0.9rem 2.2rem; background: var(--red); color: var(--white);
  letter-spacing: 0.12em; font-weight: 700;
  transition: box-shadow 0.2s, transform 0.2s;
}
.btn-main:hover { box-shadow: 0 0 28px var(--red-glow); transform: translateY(-2px); }
.btn-ghost {
  font-family: var(--font-mono); font-size: 0.75rem;
  padding: 0.9rem 2.2rem; border: 1px solid var(--border2);
  color: var(--text2); letter-spacing: 0.12em;
  transition: border-color 0.2s, color 0.2s;
}
.btn-ghost:hover { border-color: var(--red); color: var(--red); }

/* HERO RIGHT */
.hero-portrait-wrap {
  position: relative; width: 320px; height: 380px;
  margin: 0 auto;
  opacity: 0; animation: fadeIn 1s 0.8s forwards;
}
.portrait-rings { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }
.ring { position: absolute; border-radius: 50%; border: 1px solid; animation: spin linear infinite; }
.r1 { width: 360px; height: 360px; border-color: rgba(201,146,10,0.12); animation-duration: 22s; }
.r2 { width: 288px; height: 288px; border-color: rgba(201,146,10,0.07); animation-duration: 16s; animation-direction: reverse; }
.r3 { width: 220px; height: 220px; border-color: rgba(155,111,224,0.06); animation-duration: 32s; }
@keyframes spin { from { transform: rotate(0); } to { transform: rotate(360deg); } }

.med-cross {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 200px; height: 200px;
  color: var(--red);
  pointer-events: none;
}
.portrait-img {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 180px; height: 180px; border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--red);
  box-shadow: 0 0 40px rgba(201,146,10,0.35), 0 0 80px rgba(155,111,224,0.12), inset 0 0 20px rgba(201,146,10,0.08);
}
.portrait-img img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }

.stat-card {
  position: absolute; background: var(--surface);
  border: 1px solid var(--border); padding: 0.65rem 0.9rem;
  border-left: 2px solid var(--red);
  min-width: 110px;
}
.sc1 { top: 0px;   left: -30px; }
.sc2 { bottom: 20px; left: -30px; }
.sc3 { top: 50%;   right: -40px; transform: translateY(-50%); }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
.sc-num {
  display: block; font-family: var(--font-mono);
  font-size: 1.5rem; font-weight: 700; color: var(--red); line-height: 1;
}
.sc-plus { font-family: var(--font-mono); font-size: 1rem; color: var(--red); }
.sc-label { display: block; font-size: 0.62rem; color: var(--text2); letter-spacing: 0.1em; margin-top: 0.2rem; }

/* MARQUEE */
.marquee-wrap {
  overflow: hidden; border-top: 1px solid var(--border2);
  border-bottom: 1px solid var(--border2);
  padding: 0.85rem 0; background: var(--bg2); position: relative; z-index: 1;
}
.marquee-track {
  display: flex; gap: 2rem; white-space: nowrap;
  animation: marquee 28s linear infinite;
}
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.marquee-track span { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text2); }
.marquee-track .sep { color: var(--red); opacity: 0.6; }

/* ══ SECTIONS ══ */
section {
  padding: 6rem 8vw; position: relative;
  z-index: 1; border-top: 1px solid var(--border2);
}

/* ══ BIOLUMINESCENCE — per-section ambient glow ══ */
#about   { background: radial-gradient(ellipse 60% 50% at 80% 30%, rgba(201,146,10,0.04) 0%, transparent 70%), rgba(5,6,10,0.55); }
#journey { background: radial-gradient(ellipse 50% 60% at 10% 60%, rgba(155,111,224,0.05) 0%, transparent 70%), rgba(5,6,10,0.55); }
#skills  { background: radial-gradient(ellipse 60% 40% at 90% 80%, rgba(201,146,10,0.04) 0%, transparent 70%), rgba(5,6,10,0.55); }
#contact { background: rgba(5,6,10,0.65); }
#hero    { background: transparent; }
.section-header { margin-bottom: 0.8rem; }
.sh-label {
  font-family: var(--font-mono); font-size: 0.68rem;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--text2);
}
.sh-label .mono { color: var(--red); }
.section-title {
  font-size: clamp(2rem, 4vw, 3rem); font-weight: 800;
  color: var(--text); margin: 0.5rem 0 0.8rem; letter-spacing: -0.02em;
}
.section-sub {
  font-family: var(--font-mono); font-size: 0.72rem;
  color: var(--text3); letter-spacing: 0.08em;
  margin-bottom: 2rem;
}

/* ══ ABOUT ══ */
.about-layout {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 5rem; margin-bottom: 4rem;
}
.about-headline h2 {
  font-size: clamp(1.7rem, 3vw, 2.6rem); font-weight: 800;
  color: var(--text); line-height: 1.2;
}
.about-headline h2 em { font-style: italic; color: var(--red); font-weight: 400; }
.about-body p {
  font-size: 0.95rem; line-height: 1.85; color: var(--text2);
  margin-bottom: 1.1rem; font-weight: 400;
}
.about-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; }
.about-chips span {
  font-family: var(--font-mono); font-size: 0.7rem;
  padding: 0.3rem 0.8rem; background: var(--surface);
  border: 1px solid var(--border2); color: var(--text2);
  transition: border-color 0.2s, color 0.2s;
}
.about-chips span:hover { border-color: var(--red); color: var(--red); }

/* DOMAIN CARDS */
.domain-cards {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 1px; background: var(--border2); border: 1px solid var(--border2);
}
.domain-card {
  background: rgba(9,11,16,0.82); padding: 2.2rem 1.8rem;
  transition: background 0.3s; cursor: default; position: relative; overflow: hidden;
}
.domain-card::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: var(--red);
  transform: scaleX(0); transition: transform 0.3s;
}
.domain-card:hover::after { transform: scaleX(1); }
.domain-card:hover { background: var(--surface); }
.dc-icon-wrap {
  width: 36px; height: 36px; margin-bottom: 1.1rem;
  color: var(--red); opacity: 0.8;
}
.dc-icon-wrap svg { width: 100%; height: 100%; }
.domain-card h3 { font-size: 0.9rem; font-weight: 700; color: var(--text); margin-bottom: 0.5rem; }
.domain-card p { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text2); line-height: 1.65; }

/* ══ JOURNEY — CARD GRID ══ */
.tl-toggle {
  display: flex; border: 1px solid var(--border2); width: fit-content;
  margin-bottom: 2.5rem;
}
.tl-btn {
  font-family: var(--font-mono); font-size: 0.68rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  padding: 0.55rem 1.4rem; background: none; border: none;
  border-right: 1px solid var(--border2); color: var(--text2);
  cursor: pointer; transition: background 0.2s, color 0.2s;
}
.tl-btn:last-child { border-right: none; }
.tl-btn.active, .tl-btn:hover { background: var(--red-dim); color: var(--red); }

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border2);
  border: 1px solid var(--border2);
}

.exp-card {
  background: rgba(9,11,16,0.82);
  padding: 2rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background 0.25s;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.exp-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--red);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.3s;
}
.exp-card:hover::before { transform: scaleY(1); }
.exp-card:hover { background: var(--surface); }
.exp-card.hidden { display: none; }

/* PCB corner bracket — top right, appears on hover */
.exp-card::after {
  content: '';
  position: absolute;
  top: 7px; right: 7px;
  width: 12px; height: 12px;
  border-top: 1.5px solid var(--red);
  border-right: 1.5px solid var(--red);
  opacity: 0;
  transition: opacity 0.25s;
}
.exp-card:hover::after { opacity: 1; }

.ec-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 0.4rem;
}
.ec-type {
  font-family: var(--font-mono); font-size: 0.58rem;
  letter-spacing: 0.18em; text-transform: uppercase;
  padding: 0.2rem 0.6rem; border: 1px solid;
}
.ec-type.edu      { color: var(--c-edu);      border-color: rgba(201,146,10,0.35);  background: rgba(201,146,10,0.08); }
.ec-type.research { color: var(--c-research);  border-color: rgba(59,130,246,0.35); background: rgba(59,130,246,0.08); }
.ec-type.industry { color: var(--c-industry);  border-color: rgba(155,111,224,0.35); background: rgba(155,111,224,0.08); }
.ec-year { font-family: var(--font-mono); font-size: 0.62rem; color: var(--text3); }

.ec-icon-ring {
  width: 40px; height: 40px; color: var(--red);
  opacity: 0.6; margin: 0.4rem 0;
}
.ec-icon-ring svg { width: 100%; height: 100%; }

.exp-card h3 { font-size: 1rem; font-weight: 700; color: var(--text); line-height: 1.3; }
.ec-org { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text2); }

.ec-tags {
  display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.3rem;
}
.ec-tags span {
  font-family: var(--font-mono); font-size: 0.6rem;
  padding: 0.18rem 0.55rem; border: 1px solid var(--border2); color: var(--text3);
}

.ec-expand-hint {
  font-family: var(--font-mono); font-size: 0.62rem;
  color: var(--red); opacity: 0;
  margin-top: auto; padding-top: 0.8rem;
  letter-spacing: 0.1em;
  transition: opacity 0.2s;
}
.exp-card:hover .ec-expand-hint { opacity: 1; }

/* ══ SKILLS ══ */
.skill-filter {
  display: flex; border: 1px solid var(--border2);
  width: fit-content; flex-wrap: wrap; margin-bottom: 2.5rem;
}
.sf-btn {
  font-family: var(--font-mono); font-size: 0.68rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.55rem 1.2rem; background: none; border: none;
  border-right: 1px solid var(--border2); color: var(--text2);
  cursor: pointer; transition: background 0.2s, color 0.2s;
}
.sf-btn:last-child { border-right: none; }
.sf-btn.active, .sf-btn:hover { background: var(--red-dim); color: var(--red); }

.skills-cloud { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-bottom: 3rem; }
.sk {
  font-family: var(--font-mono); border: 1px solid var(--border2);
  background: var(--surface); color: var(--text2);
  cursor: default; transition: all 0.2s; letter-spacing: 0.04em;
}
.sk.large  { font-size: 0.85rem; padding: 0.5rem 1.1rem; }
.sk.medium { font-size: 0.75rem; padding: 0.4rem 0.85rem; }
.sk.small  { font-size: 0.65rem; padding: 0.28rem 0.65rem; }
.sk:hover  { border-color: var(--red); color: var(--red); background: var(--red-dim); }
.sk.hidden { display: none; }
.sk.active-cat.programming { border-color: var(--red);     color: var(--red); }
.sk.active-cat.software    { border-color: #3b82f6;        color: #3b82f6; }
.sk.active-cat.regulatory  { border-color: #f59e0b;        color: #f59e0b; }
.sk.active-cat.lab         { border-color: #84cc16;        color: #84cc16; }
.sk.active-cat.technical   { border-color: #a78bfa;        color: #a78bfa; }

.certs-row {
  display: grid; grid-template-columns: repeat(3,1fr);
  gap: 1px; background: var(--border2); border: 1px solid var(--border2);
}
.cert-item {
  display: flex; align-items: center; gap: 1.2rem;
  padding: 1.8rem 2rem; background: var(--bg2);
  transition: background 0.2s;
}
.cert-item:hover { background: var(--surface); }
.cert-icon-wrap {
  width: 28px; height: 28px; flex-shrink: 0;
  color: var(--red);
}
.cert-icon-wrap svg { width: 100%; height: 100%; }
.cert-title { font-size: 0.9rem; font-weight: 700; color: var(--text); margin-bottom: 0.2rem; }
.cert-sub { font-family: var(--font-mono); font-size: 0.65rem; color: var(--text2); }

/* ══ CONTACT ══ */
.contact-layout { display: grid; grid-template-columns: 1fr 300px; gap: 5rem; align-items: center; }
.contact-left h2 { font-size: clamp(2rem,4vw,3rem); font-weight: 800; color: var(--text); line-height: 1.2; margin-bottom: 1.2rem; letter-spacing: -0.02em; }
.contact-left h2 em { color: var(--red); font-style: italic; font-weight: 400; }
.contact-left p { font-size: 0.95rem; color: var(--text2); line-height: 1.75; margin-bottom: 2.5rem; max-width: 48ch; }
.contact-links { display: flex; flex-direction: column; border: 1px solid var(--border2); margin-bottom: 2.5rem; }
.contact-link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.4rem; border-bottom: 1px solid var(--border2); transition: background 0.2s;
}
.contact-link:last-child { border-bottom: none; }
.contact-link:hover { background: var(--surface); }
.cl-type { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text3); min-width: 68px; }
.cl-val { font-size: 0.85rem; color: var(--text); transition: color 0.2s; }
.contact-link:hover .cl-val { color: var(--red); }
.contact-right { display: flex; align-items: center; justify-content: center; }
.helix-wrap { display: flex; flex-direction: column; align-items: center; gap: 1rem; }
#helix-canvas {
  border: 1px solid rgba(201,146,10,0.2);
  box-shadow: 0 0 30px rgba(201,146,10,0.08), 0 0 60px rgba(155,111,224,0.06);
}
.helix-label { font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text3); }

/* ══ SCHEDULE BLOCK ══ */
.schedule-block {
  margin-top: 2.5rem;
  border: 1px solid var(--border);
  padding: 1.8rem 2rem;
  position: relative;
  background: rgba(201,146,10,0.03);
}
.schedule-block::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--red), transparent 70%);
}
.schedule-label { margin-bottom: 0.6rem; }
.schedule-title {
  font-size: 1.1rem; font-weight: 800;
  color: var(--text); margin-bottom: 0.3rem;
  letter-spacing: -0.01em;
}
.schedule-sub {
  font-family: var(--font-mono); font-size: 0.68rem;
  color: var(--text3); letter-spacing: 0.08em;
  margin-bottom: 1.4rem;
}
.schedule-btn {
  display: inline-flex; align-items: center; gap: 0.7rem;
  font-family: var(--font-mono); font-size: 0.75rem;
  letter-spacing: 0.1em; font-weight: 700;
  color: var(--bg); background: var(--red);
  padding: 0.85rem 1.8rem;
  transition: box-shadow 0.2s, transform 0.2s;
  text-decoration: none;
}
.schedule-btn:hover {
  box-shadow: 0 0 24px var(--red-glow);
  transform: translateY(-2px);
}
.schedule-note {
  font-family: var(--font-mono); font-size: 0.62rem;
  color: var(--text3); margin-top: 1rem; line-height: 1.6;
}

/* ══ PROJECTS SECTION ══ */
#projects { background: radial-gradient(ellipse 55% 50% at 20% 70%, rgba(155,111,224,0.05) 0%, transparent 70%), rgba(5,6,10,0.55); }

.proj-card { cursor: pointer; }

/* project type badge reuses ec-type styles but needs a "device" variant */
.ec-type.device  { color: #2dd4bf; border-color: rgba(45,212,191,0.35); background: rgba(45,212,191,0.08); }
.ec-type.software { color: #3b82f6; border-color: rgba(59,130,246,0.35); background: rgba(59,130,246,0.08); }

.ep-project-img {
  margin: 1.5rem 0 2rem;
  border: 1px solid var(--border);
  overflow: hidden;
}
.ep-project-img img {
  width: 100%;
  display: block;
  object-fit: contain;
  max-height: none;
  background: #08090d;
  transition: transform 0.4s ease;
}
.ep-project-img:hover img { transform: scale(1.02); }
.ep-img-caption {
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text3);
  line-height: 1.6;
  border-top: 1px solid var(--border2);
  background: rgba(5,6,10,0.6);
}
/* ══ FOOTER ══ */
footer {
  border-top: 1px solid var(--border2); padding: 1.8rem 8vw;
  position: relative; z-index: 1;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono); font-size: 0.68rem; color: var(--text3);
}
.mono { font-family: var(--font-mono); }

/* ══ EXPANDABLE PANEL ══ */
.ep-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(3,4,6,0.7);
  backdrop-filter: blur(8px);
  opacity: 0; pointer-events: none;
  transition: opacity 0.35s;
  display: flex; align-items: stretch; justify-content: flex-end;
}
.ep-overlay.open { opacity: 1; pointer-events: all; }

.ep-panel {
  width: min(680px, 95vw);
  height: 100%;
  background: var(--bg2);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  position: relative;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.16,1,0.3,1);
  scrollbar-width: thin; scrollbar-color: var(--red) var(--bg2);
}
.ep-overlay.open .ep-panel { transform: translateX(0); }

/* top red scan line */
.ep-panel::before {
  content: ''; position: sticky; top: 0; left: 0; right: 0;
  height: 2px; display: block;
  background: linear-gradient(to right, var(--red), transparent 60%);
  z-index: 10;
}

.ep-close {
  position: sticky; top: 1.2rem; float: right;
  margin: 1.2rem 1.5rem 0 0;
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em;
  background: var(--surface); border: 1px solid var(--border2);
  color: var(--text2); padding: 0.45rem 1rem; cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  z-index: 10;
}
.ep-close:hover { background: var(--red); color: var(--white); border-color: var(--red); }

.ep-content {
  padding: 2rem 2.5rem 3.5rem; clear: both;
}

/* Panel inner styles */
.ep-badge {
  display: inline-block; font-family: var(--font-mono);
  font-size: 0.6rem; letter-spacing: 0.18em; text-transform: uppercase;
  padding: 0.22rem 0.7rem; margin-bottom: 1.2rem; border: 1px solid;
}
.ep-badge.edu      { color: var(--c-edu);     border-color: rgba(201,146,10,0.4);  background: rgba(201,146,10,0.1); }
.ep-badge.research { color: var(--c-research); border-color: rgba(59,130,246,0.4); background: rgba(59,130,246,0.1); }
.ep-badge.industry { color: var(--c-industry); border-color: rgba(155,111,224,0.4); background: rgba(155,111,224,0.1); }

.ep-meta {
  display: flex; gap: 1.5rem; flex-wrap: wrap; margin-bottom: 1.4rem;
}
.ep-meta span { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text2); }

.ep-content h2 {
  font-size: clamp(1.6rem,3vw,2.2rem); font-weight: 800;
  color: var(--text); letter-spacing: -0.02em; line-height: 1.1; margin-bottom: 0.2rem;
}
.ep-content h2 em { font-style: italic; color: var(--red); font-weight: 400; }

.ep-divider { height: 1px; background: var(--border2); margin: 1.8rem 0; }

.ep-section { margin-bottom: 2rem; }
.ep-section h5 {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--red);
  margin-bottom: 0.9rem; padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border2);
}
.ep-section p { font-size: 0.9rem; line-height: 1.8; color: var(--text2); }
.ep-section ul { list-style: none; display: flex; flex-direction: column; gap: 0.65rem; }
.ep-section ul li {
  font-size: 0.88rem; color: var(--text2); line-height: 1.65;
  padding-left: 1.2rem; position: relative;
}
.ep-section ul li::before { content: '▸'; position: absolute; left: 0; color: var(--red); font-size: 0.65rem; top: 0.18rem; }

.ep-tags { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.ep-tags span {
  font-family: var(--font-mono); font-size: 0.65rem;
  padding: 0.28rem 0.7rem; background: var(--surface);
  border: 1px solid var(--border2); color: var(--text2);
  transition: border-color 0.2s, color 0.2s;
}
.ep-tags span:hover { border-color: var(--red); color: var(--red); }

/* ══ ANIMATIONS ══ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; } to { opacity: 1; }
}
.reveal {
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  animation: revealFallback 0s 1.5s forwards;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
@keyframes revealFallback { to { opacity: 1; transform: translateY(0); } }

/* ══ RESPONSIVE ══ */
@media (max-width: 1100px) {
  .domain-cards { grid-template-columns: repeat(2,1fr); }
  .cards-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-right { display: none; }
  .about-layout { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact-layout { grid-template-columns: 1fr; }
  .certs-row { grid-template-columns: 1fr; }
  #side-nav { display: none; }
}
@media (max-width: 640px) {
  section { padding: 4rem 5vw; }
  .cards-grid { grid-template-columns: 1fr; }
  .domain-cards { grid-template-columns: 1fr; }
  .nav-email { display: none; }
  .ep-content { padding: 1.5rem 1.5rem 3rem; }
}