/* =========================================================
   Arnob Ghosh — Portfolio
   Modern theme: dark by default, light via [data-theme="light"]
   ========================================================= */

:root {
  /* Brand */
  --accent: #2dd4bf;          /* teal */
  --accent-2: #818cf8;        /* indigo */
  --accent-3: #f472b6;        /* pink for gradient sweep */
  --red: #ef4444;

  /* Dark palette (default) */
  --bg: #0b0f17;
  --bg-elev: #121826;
  --bg-elev-2: #1a2236;
  --surface-glass: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.18);
  --text: #e6edf3;
  --text-muted: #9aa4b2;
  --text-soft: #c8d0db;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);

  /* Typography */
  --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;

  /* Layout */
  --radius: 14px;
  --radius-lg: 22px;
  --maxw: 1200px;
  --nav-h: 64px;
}

[data-theme="light"] {
  --bg: #f7f8fb;
  --bg-elev: #ffffff;
  --bg-elev-2: #f0f3f8;
  --surface-glass: rgba(255, 255, 255, 0.6);
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.18);
  --text: #0f172a;
  --text-muted: #475569;
  --text-soft: #334155;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(1200px 600px at 80% -10%, rgba(45, 212, 191, 0.10), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(129, 140, 248, 0.10), transparent 60%),
    radial-gradient(700px 400px at 50% 110%, rgba(244, 114, 182, 0.07), transparent 60%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

[data-theme="light"] body {
  background-image:
    radial-gradient(1200px 600px at 80% -10%, rgba(45, 212, 191, 0.18), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(129, 140, 248, 0.18), transparent 60%);
}

/* -------- Typography -------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 0.6em;
  color: var(--text);
}
h1 { font-size: clamp(1.8rem, 3vw, 2.6rem); }
h2 { font-size: clamp(1.4rem, 2.2vw, 1.9rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--text-soft); }
a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dotted transparent;
  transition: color .2s ease, border-color .2s ease;
}
a:hover { color: var(--text); border-bottom-color: var(--accent); }

strong { color: var(--text); }
em { color: var(--text-soft); }

hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
  margin: 4rem 0;
}

/* -------- Layout -------- */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

main { padding-top: calc(var(--nav-h) + 1rem); }

section, article { margin: 4rem 0; }

/* -------- Navbar -------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 50;
  display: flex;
  align-items: center;
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.nav-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  letter-spacing: -0.01em;
  border: none;
}
.nav-brand .dot { color: var(--accent); }
.nav-links {
  display: flex;
  gap: 1.25rem;
  margin-left: auto;
  align-items: center;
}
.nav-links a {
  color: var(--text-muted);
  font-size: 0.92rem;
  border: none;
}
.nav-links a:hover { color: var(--text); }

.theme-toggle {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  width: 38px; height: 38px;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform .25s ease, background .25s ease, border-color .25s ease;
}
.theme-toggle:hover { transform: rotate(20deg); border-color: var(--accent); }
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }
[data-theme="light"] .theme-toggle .sun { display: block; }
[data-theme="light"] .theme-toggle .moon { display: none; }

/* -------- Hero -------- */
.hero {
  padding: 4rem 0 2rem;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 3rem;
  align-items: center;
}
.hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}
.hero .eyebrow::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  margin-bottom: 1rem;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--accent), var(--accent-2) 50%, var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 56ch;
}
.hero-cta {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  transition: transform .15s ease, border-color .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); border-color: var(--accent); color: var(--text); }
.btn-primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  border: none;
  color: #0b0f17;
  font-weight: 600;
}
.btn-primary:hover { color: #0b0f17; filter: brightness(1.1); }

.hero-portrait {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.hero-portrait img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.hero-portrait::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(11,15,23,0.6));
  pointer-events: none;
}

/* -------- Section headers -------- */
.section-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.section-header .label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* -------- Cards (Projects) -------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  position: relative;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  padding: 1px;
  background: linear-gradient(135deg, transparent, color-mix(in srgb, var(--accent) 40%, transparent), transparent);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity .25s ease;
  pointer-events: none;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}
.card:hover::before { opacity: 1; }
.card-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-elev-2);
}
.card-media img,
.card-media video {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}
.card:hover .card-media img { transform: scale(1.04); }
.card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
}
.card-body p { margin: 0; font-size: 0.95rem; }
.card-actions {
  margin-top: auto;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.card-actions .btn {
  font-size: 0.85rem;
  padding: 0.5rem 0.9rem;
}

/* -------- Education narrative -------- */
.story {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.story .row-split {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  align-items: start;
}
.story .row-split.reverse { grid-template-columns: 1fr 1.5fr; }
.story img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.school-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--text-soft);
}
.school-badge img { width: 24px; height: 24px; border: none; border-radius: 0; }

/* -------- Tech strip -------- */
.tech-strip {
  width: 100%;
  display: flex;
  gap: 2.5rem;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  padding: 2rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.tech-strip img {
  height: 48px;
  width: auto;
  filter: grayscale(1) opacity(0.7);
  transition: filter .25s ease, transform .25s ease;
}
.tech-strip img:hover {
  filter: grayscale(0) opacity(1);
  transform: translateY(-3px);
}

/* -------- Game wrapper -------- */
.game-section {
  margin: 3rem 0;
  text-align: center;
}
.game-toggle {
  margin-bottom: 1rem;
}
#myCanvas {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  max-width: 100%;
  height: auto;
  box-shadow: var(--shadow);
}
.game-keys {
  display: inline-flex;
  gap: 0.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}
.kbd {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.35rem 0.75rem;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 6px;
  color: var(--text-soft);
}

.game-hidden #myCanvas,
.game-hidden .game-keys { display: none; }

/* -------- Video card -------- */
.video-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  box-shadow: var(--shadow);
}
.video-wrap video { width: 100%; display: block; }
.video-overlay {
  position: absolute;
  top: 0; left: 0; right: 0;
  padding: 1.25rem 1.5rem;
  background: linear-gradient(180deg, rgba(0,0,0,0.65), transparent);
  color: #fff;
}
.video-overlay a {
  color: #fff;
  font-weight: 600;
  font-size: 1.05rem;
  border-bottom: 1px solid rgba(255,255,255,0.4);
}
.video-overlay a:hover { border-bottom-color: #fff; }

/* -------- Contact -------- */
.contact-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  background-image: radial-gradient(800px 300px at 50% -50%, color-mix(in srgb, var(--accent) 18%, transparent), transparent);
}
.contact-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}
.contact-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.2rem;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
}
.contact-links a:hover { border-color: var(--accent); color: var(--accent); }
.contact-links img { width: 18px; height: 18px; }

/* -------- Hire pill -------- */
.hire {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--red) 14%, transparent);
  color: var(--red);
  font-size: 0.85rem;
  border: 1px solid color-mix(in srgb, var(--red) 40%, transparent);
}
.hire::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 10px var(--red);
}

/* -------- Lists -------- */
.prose ul {
  padding-left: 1.25rem;
}
.prose ul li { margin-bottom: 0.4rem; }
.prose ul li::marker { color: var(--accent); }

/* -------- Footer -------- */
.footer {
  padding: 2rem 0 3rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
  margin-top: 4rem;
}

/* -------- Reveal on scroll -------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* -------- Responsive -------- */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 2rem; padding-top: 2rem; }
  .hero-portrait { max-width: 360px; }
  .story .row-split,
  .story .row-split.reverse { grid-template-columns: 1fr; }
  hr { margin: 2.5rem 0; }
  section, article { margin: 2.5rem 0; }
  .nav-links a:not(.theme-wrap) { display: none; }
  .nav-links .theme-wrap { display: inline-flex; }
}

/* Hide legacy bootstrap-specific elements gracefully */
.legacy-hide { display: none !important; }

/* -------- Work Experience timeline -------- */
.exp-list {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  border-left: 1px solid var(--border);
  padding-left: 2.25rem;
  position: relative;
}
.exp-item {
  position: relative;
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 2rem;
  align-items: start;
}
.exp-item::before {
  content: "";
  position: absolute;
  left: -2.65rem;
  top: 0.45rem;
  width: 12px; height: 12px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);
}
.exp-period {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  padding-top: 0.25rem;
}
.exp-body h3 {
  margin: 0 0 0.3rem;
  font-size: 1.2rem;
  color: var(--text);
}
.exp-company {
  font-family: var(--font-display);
  font-weight: 700;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.exp-role {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 0.85rem;
  font-style: italic;
}
.exp-body ul {
  padding-left: 1.1rem;
  margin: 0.4rem 0 0.85rem;
}
.exp-body li {
  font-size: 0.95rem;
  color: var(--text-soft);
  margin-bottom: 0.45rem;
  line-height: 1.55;
}
.exp-body li::marker { color: var(--accent); }
.exp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.6rem;
}
.exp-tag {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 0.22rem 0.65rem;
  border-radius: 999px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  letter-spacing: 0.01em;
}
@media (max-width: 720px) {
  .exp-list { padding-left: 1.5rem; }
  .exp-item {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
  .exp-item::before { left: -1.9rem; top: 0.3rem; }
}

/* -------- OpenCV "O" hover trick --------
   Default: container clips to a 48px square showing only the colored "O"
   of the OpenCV logo (the image is sized much taller than the container,
   so only the top portion — the three RGB circles — is visible).
   Hover: container expands and the image shrinks to fit, revealing
   the full colored logo with text. */
.tech-strip .opencv-wrap {
  display: inline-flex;
  align-items: flex-start;
  justify-content: center;
  width: 3.2rem;
  height: 48px;
  overflow: hidden;
  border-radius: 8px;
  transition: width .45s cubic-bezier(.2,.7,.2,1),
              background .35s ease,
              padding .35s ease;
}
.tech-strip .opencv-wrap .opencv-logo {
  height: 8.6rem;            /* ~295% of 48px, matching the original trick */
  width: auto;
  display: block;
  filter: grayscale(1) opacity(0.7);    /* keep the "O" in full color even at rest */
  transition: height .45s cubic-bezier(.2,.7,.2,1),
              filter .45s ease,
              transform .45s ease;
  border: none;
  transform-origin: top center;
}
.tech-strip .opencv-wrap:hover {
  width: auto;
  min-width: 5rem;
  background: var(--bg-elev-2);
  padding: 0 0.5rem;
}
.tech-strip .opencv-wrap:hover .opencv-logo {
  height: 48px;
  filter: opacity(1) drop-shadow(0 4px 12px rgba(0,0,0,0.25));
}

/* -------- Expandable proof panel (used in Experience + select Projects) -------- */
details.proof {
  margin-top: 1.1rem;
  background: color-mix(in srgb, var(--bg-elev-2) 80%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .25s ease;
}
details.proof[open] { border-color: var(--border-strong); }
details.proof summary {
  cursor: pointer;
  padding: 0.85rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.55rem;
  list-style: none;
  user-select: none;
  transition: color .2s ease, background .2s ease;
  letter-spacing: 0.02em;
}
details.proof summary::-webkit-details-marker { display: none; }
details.proof summary::before {
  content: "▶";
  color: var(--accent);
  transition: transform .25s ease;
  font-size: 0.65rem;
}
details.proof[open] summary::before { transform: rotate(90deg); }
details.proof summary:hover { color: var(--text); background: var(--bg-elev); }
details.proof summary::after {
  content: "click any image to enlarge";
  margin-left: auto;
  color: var(--text-muted);
  opacity: 0.55;
  font-size: 0.72rem;
}
details.proof[open] summary::after { opacity: 0; }

.proof-body {
  padding: 1.1rem;
  border-top: 1px solid var(--border);
}
.proof-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.85rem;
}
.proof-single .proof-thumb {
  display: block;
  max-width: 100%;
}
.proof-single .proof-thumb img {
  aspect-ratio: auto;
  max-height: 380px;
  object-fit: contain;
  background: var(--bg-elev-2);
}
.proof-thumb {
  display: block;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  cursor: zoom-in;
  transition: transform .2s ease, border-color .2s ease, box-shadow .25s ease;
  text-decoration: none;
  color: inherit;
}
.proof-thumb:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
}
.proof-thumb img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.proof-caption {
  display: block;
  padding: 0.55rem 0.8rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  border-top: 1px solid var(--border);
  line-height: 1.4;
}

/* JavaSwing1-style step walkthrough */
.proof-steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.proof-steps > li {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  align-items: start;
}
.proof-steps > li p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-soft);
  line-height: 1.6;
}
@media (max-width: 600px) {
  .proof-steps > li { grid-template-columns: 1fr; }
}

/* -------- Lightbox (image zoom) -------- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 12, 0.93);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  cursor: zoom-out;
  padding: 2rem;
}
.lightbox.open {
  display: flex;
  animation: lightbox-in 0.2s ease;
}
@keyframes lightbox-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
.lightbox img {
  max-width: 92vw;
  max-height: 82vh;
  border-radius: 10px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  cursor: default;
  display: block;
}
.lightbox-caption {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  max-width: 80vw;
  color: #fff;
  font-size: 0.92rem;
  padding: 0.6rem 1.1rem;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  text-align: center;
  backdrop-filter: blur(8px);
}
.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s ease, transform .2s ease;
}
.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: rotate(90deg);
}

/* -------- Experience graphic (inline, single image per role) -------- */
.exp-body {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 1.75rem;
  align-items: start;
}
/* Items without an exp-graphic fall back to a single column */
.exp-body:not(:has(.exp-graphic)) {
  grid-template-columns: 1fr;
}
.exp-main { min-width: 0; }
.exp-graphic {
  display: block;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  cursor: zoom-in;
  align-self: start;
  transition: transform .25s ease, border-color .25s ease, box-shadow .3s ease;
  margin-top: 0.3rem;
  background: var(--bg-elev-2);
  text-decoration: none;
}
.exp-graphic:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
}
.exp-graphic img {
  width: 100%;
  display: block;
  height: auto;
  max-height: 360px;
  object-fit: cover;
}
@media (max-width: 860px) {
  .exp-body { grid-template-columns: 1fr; gap: 1.25rem; }
  .exp-graphic img { max-height: 280px; }
}

/* -------- Custom carousel (used by JavaSwing1 card) -------- */
.carousel {
  position: relative;
}
.carousel-track {
  position: relative;
  width: 100%;
  height: 100%;
}
.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity .4s ease, visibility 0s linear .4s;
}
.carousel-slide.active {
  opacity: 1;
  visibility: visible;
  transition: opacity .4s ease, visibility 0s linear 0s;
}
.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  cursor: zoom-in;
}
.carousel-prev,
.carousel-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  cursor: pointer;
  z-index: 3;
  font-size: 1.25rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity .25s ease, background .2s ease, transform .2s ease;
  padding: 0;
  font-family: inherit;
}
.carousel:hover .carousel-prev,
.carousel:hover .carousel-next,
.carousel:focus-within .carousel-prev,
.carousel:focus-within .carousel-next {
  opacity: 1;
}
.carousel-prev { left: 0.55rem; }
.carousel-next { right: 0.55rem; }
.carousel-prev:hover,
.carousel-next:hover {
  background: rgba(0, 0, 0, 0.75);
  transform: translateY(-50%) scale(1.08);
}
.carousel-dots {
  position: absolute;
  bottom: 0.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.4rem;
  z-index: 3;
}
.carousel-dots button {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background .2s ease, transform .2s ease, width .2s ease;
}
.carousel-dots button.active {
  background: var(--accent);
  width: 18px;
  border-radius: 4px;
}
.carousel-caption {
  position: absolute;
  bottom: 1.8rem;
  left: 1rem;
  right: 1rem;
  z-index: 2;
  text-align: center;
  font-size: 0.8rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 0.35rem 0.7rem;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity .25s ease;
  pointer-events: none;
}
.carousel:hover .carousel-caption {
  opacity: 1;
}