/* ==========================================================================
   TOKENS
   ========================================================================== */
:root {
  --bg-deep: #0a0e14;
  --bg-panel: #0f1620;
  --bg-panel-2: #121b26;
  --line: #1c2833;
  --trace-cyan: #00e5ff;
  --trace-green: #39ff88;
  --copper: #ff8a3d;
  --text-primary: #e8f4f8;
  --text-dim: #7a8b99;
  --text-faint: #4a5a68;

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

  --radius: 10px;
  --max-width: 1100px;
}

* {
  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: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-display);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  margin: 0;
}

p {
  margin: 0;
}

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

code {
  font-family: var(--font-mono);
  background: var(--bg-panel-2);
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--trace-cyan);
  font-size: 0.85em;
}

:focus-visible {
  outline: 2px solid var(--trace-cyan);
  outline-offset: 3px;
}

/* ==========================================================================
   BACKGROUND CANVAS + SPINE
   ========================================================================== */
#circuit-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
}

#spine {
  position: fixed;
  left: 20px;
  top: 0;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  display: none;
}

@media (min-width: 900px) {
  #spine {
    display: block;
  }
}

main,
header,
footer {
  position: relative;
  z-index: 2;
}

/* ==========================================================================
   NAV
   ========================================================================== */
#navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

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

.logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}

.logo-bracket {
  color: var(--trace-green);
}

#nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

#nav-links a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  transition: color 0.2s ease;
  position: relative;
}

#nav-links a:hover {
  color: var(--trace-cyan);
}

#nav-links a.nav-active {
  color: var(--trace-cyan);
  border-bottom: 1px solid var(--trace-cyan);
  padding-bottom: 2px;
}

.nav-Devadharshan_Resume {
  color: var(--bg-deep) !important;
  background: var(--trace-green);
  padding: 7px 14px;
  border-radius: 6px;
  font-weight: 600;
}

.nav-Devadharshan_Resume:hover {
  color: var(--bg-deep) !important;
  background: var(--trace-cyan);
}

#nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

#nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--trace-cyan);
  display: block;
}

@media (max-width: 800px) {
  #nav-links {
    position: fixed;
    top: 61px;
    left: 0;
    right: 0;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 18px;
    transform: translateY(-120%);
    transition: transform 0.25s ease;
  }

  #nav-links.open {
    transform: translateY(0);
  }

  #nav-toggle {
    display: flex;
  }
}

/* ==========================================================================
   SHARED
   ========================================================================== */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 100px 24px 40px;
  scroll-margin-top: 70px;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 44px;
}

.designator {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--trace-green);
  border: 1px solid var(--trace-green);
  padding: 3px 8px;
  border-radius: 4px;
  opacity: 0.85;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 600;
}

.section-head::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line), transparent);
  margin-left: 8px;
}

.section-count {
  font-family: var(--font-mono);
  font-size: 0.5em;
  color: var(--text-dim);
  vertical-align: middle;
  margin-left: 0.5rem;
  font-weight: normal;
  background: var(--bg-panel-2);
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  border: 1px solid var(--line);
}

.chip-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--trace-green);
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--trace-cyan);
  color: var(--bg-deep);
}

.btn-primary:hover {
  background: var(--trace-green);
  box-shadow: 0 0 24px rgba(57, 255, 136, 0.4);
}

.btn-ghost {
  border-color: var(--line);
  color: var(--text-primary);
}

.btn-ghost:hover {
  border-color: var(--trace-cyan);
  color: var(--trace-cyan);
}

/* ==========================================================================
   HERO
   ========================================================================== */
#hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 90px 24px 60px;
  min-height: 88vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 800px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }
}

.hero-text h1 {
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.05;
  background: linear-gradient(90deg, var(--text-primary) 60%, var(--trace-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-role {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-dim);
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.pin {
  color: var(--trace-green);
  font-size: 0.7rem;
}

.dot-sep {
  color: var(--text-faint);
}

.hero-bio {
  margin-top: 24px;
  max-width: 52ch;
  color: var(--text-dim);
  font-size: 1.02rem;
}

.hero-cta {
  margin-top: 34px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-socials {
  margin-top: 30px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.hero-socials a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
  border-bottom: 1px solid transparent;
  transition: all 0.2s ease;
}

.hero-socials a:hover {
  color: var(--trace-cyan);
  border-color: var(--trace-cyan);
}

/* chip visual */
.hero-visual {
  display: flex;
  justify-content: center;
}

.chip {
  position: relative;
  width: 220px;
  height: 220px;
  background: linear-gradient(160deg, var(--bg-panel-2), var(--bg-panel));
  border: 1px solid var(--line);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 60px rgba(0, 229, 255, 0.08);
  animation: chip-float 6s ease-in-out infinite;
}

@keyframes chip-float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

.chip-face {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.chip-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--copper);
}

.chip-name {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--trace-cyan);
  font-weight: 700;
  letter-spacing: 0.03em;
}

.chip-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-faint);
  letter-spacing: 0.08em;
}

.chip-pins {
  position: absolute;
  display: flex;
  gap: 14px;
}

.chip-pins span {
  display: block;
}

.chip-pins-top,
.chip-pins-bottom {
  flex-direction: row;
  left: 26px;
  right: 26px;
  justify-content: space-between;
}

.chip-pins-top {
  top: -12px;
}

.chip-pins-bottom {
  bottom: -12px;
}

.chip-pins-left,
.chip-pins-right {
  flex-direction: column;
  top: 26px;
  bottom: 26px;
  justify-content: space-between;
}

.chip-pins-left {
  left: -12px;
}

.chip-pins-right {
  right: -12px;
}

.chip-pins::before,
.chip-pins::after {
  content: '';
}

.chip-pins-top,
.chip-pins-bottom,
.chip-pins-left,
.chip-pins-right {
  background-image: repeating-linear-gradient(var(--trace-green), var(--trace-green));
}

/* generate pin ticks via pseudo elements grid */
.chip-pins-top,
.chip-pins-bottom {
  height: 12px;
}

.chip-pins-left,
.chip-pins-right {
  width: 12px;
}

.chip-pins-top {
  background: repeating-linear-gradient(90deg, var(--trace-green) 0 3px, transparent 3px 22px);
}

.chip-pins-bottom {
  background: repeating-linear-gradient(90deg, var(--trace-green) 0 3px, transparent 3px 22px);
}

.chip-pins-left {
  background: repeating-linear-gradient(180deg, var(--trace-green) 0 3px, transparent 3px 22px);
}

.chip-pins-right {
  background: repeating-linear-gradient(180deg, var(--trace-green) 0 3px, transparent 3px 22px);
}

.scroll-cue {
  margin: 50px auto 0;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
  justify-content: center;
}

.scroll-cue span {
  width: 1px;
  height: 24px;
  background: linear-gradient(var(--trace-cyan), transparent);
  animation: scroll-pulse 1.8s ease-in-out infinite;
}

@keyframes scroll-pulse {

  0%,
  100% {
    opacity: 0.2;
  }

  50% {
    opacity: 1;
  }
}

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 700px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
}

.photo-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-panel);
  overflow: hidden;
}

.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.photo-fallback {
  display: none;
  height: 100%;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  text-align: center;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.photo-fallback p span {
  color: var(--trace-cyan);
}

.photo-frame.no-photo img {
  display: none;
}

.photo-frame.no-photo .photo-fallback {
  display: flex;
}

.about-text p {
  color: var(--text-dim);
  margin-bottom: 16px;
}

.about-text strong {
  color: var(--text-primary);
}

.about-facts {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.fact {
  border: 1px solid var(--line);
  background: var(--bg-panel);
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.fact-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--trace-green);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.fact-value {
  font-size: 0.88rem;
  color: var(--text-primary);
}

/* ==========================================================================
   SKILLS
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.skill-card {
  border: 1px solid var(--line);
  background: var(--bg-panel);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color 0.2s ease;
}

.skill-card:hover {
  border-color: var(--trace-cyan);
}

.skill-card h3 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--trace-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list li {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--bg-panel-2);
  border: 1px solid var(--line);
  padding: 5px 11px;
  border-radius: 20px;
  color: var(--text-primary);
}

/* ==========================================================================
   EXPERIENCE / TIMELINE
   ========================================================================== */
.timeline {
  position: relative;
  padding-left: 28px;
  border-left: 1px dashed var(--line);
}

.timeline-item {
  position: relative;
  padding-bottom: 36px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-node {
  position: absolute;
  left: -33px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--trace-green);
  box-shadow: 0 0 0 4px rgba(57, 255, 136, 0.15);
}

.timeline-org {
  font-family: var(--font-mono);
  color: var(--trace-cyan);
  font-size: 0.95rem;
  font-weight: 600;
}

.timeline-role {
  font-size: 0.85rem;
  color: var(--copper);
  margin-top: 3px;
}

.timeline-desc {
  color: var(--text-dim);
  margin-top: 8px;
  max-width: 60ch;
}

/* ==========================================================================
   PROJECTS
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 640px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

.project-card {
  display: block;
  border: 1px solid var(--line);
  background: var(--bg-panel);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--trace-cyan);
}

.project-card-more {
  cursor: default;
}

.project-card-more:hover {
  transform: none;
  border-color: var(--line);
}

.project-link-hint {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--trace-cyan);
  letter-spacing: 0.05em;
}

.project-card:hover .project-link-hint {
  color: var(--trace-green);
}

.project-thumb {
  aspect-ratio: 16 / 9;
  background: radial-gradient(circle at 30% 20%, rgba(0, 229, 255, 0.08), transparent 60%), var(--bg-panel-2);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border-bottom: 1px solid var(--line);
}

.thumb-placeholder {
  width: 60%;
}

.thumb-more {
  opacity: 0.5;
}

.gallery-strip {
  position: absolute;
  inset: 0;
  display: flex;
}

.gallery-strip img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: none;
}

.gallery-strip img:first-child {
  display: block;
}

.gallery-strip:has(img[style*="display: block"])~.thumb-placeholder {
  display: none;
}

.project-body {
  padding: 20px 22px 24px;
}

.project-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--trace-green);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.project-body h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.project-body p:not(.project-tag):not(.project-note):not(.project-link-hint) {
  color: var(--text-dim);
  font-size: 0.92rem;
}

.project-note {
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--text-faint);
  font-style: italic;
}

/* ==========================================================================
   CERTIFICATES
   ========================================================================== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  justify-items: stretch;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 640px) {
  .cert-grid {
    grid-template-columns: 1fr;
  }
}

.cert-card {
  border: 1px solid var(--line);
  background: var(--bg-panel);
  border-radius: var(--radius);
  padding: 0;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font-family: inherit;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.cert-card:hover {
  border-color: var(--copper);
  transform: translateY(-4px);
}

.cert-thumb {
  position: relative;
  width: 100%;
  background: var(--bg-panel-2);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.cert-thumb--portrait {
  aspect-ratio: 3 / 4;
}

/* Matches A4 or portrait certs better */
.cert-thumb--landscape {
  aspect-ratio: 4 / 3;
}

.cert-thumb--16-9 {
  aspect-ratio: 16 / 9;
}

.cert-thumb--4-3 {
  aspect-ratio: 4 / 3;
}

.cert-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  background: var(--bg-panel-2);
}

.cert-thumb-fallback {
  display: none;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.cert-thumb img[style*="display: none"]~.cert-thumb-fallback {
  display: flex;
}

.cert-card-body {
  padding: 18px 20px 22px;
}

.cert-tag {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--trace-green);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.cert-card h3 {
  font-size: 0.98rem;
  margin-bottom: 4px;
}

.cert-org {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--trace-cyan);
}

.cert-hint {
  margin-top: 20px;
  font-size: 0.78rem;
  color: var(--text-faint);
  font-style: italic;
}

/* ---- Lightbox ---- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(6, 9, 13, 0.92);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  animation: lightbox-in 0.2s ease;
}

@keyframes lightbox-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.lightbox[hidden] {
  display: none;
}

.lightbox-inner {
  max-width: min(720px, 92vw);
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.lightbox-inner img {
  max-width: 100%;
  max-height: 76vh;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-panel);
  box-shadow: 0 0 60px rgba(0, 229, 255, 0.12);
}

.lightbox-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  text-align: center;
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 28px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--bg-panel);
  color: var(--text-primary);
  font-size: 1.1rem;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.lightbox-close:hover {
  border-color: var(--trace-cyan);
  color: var(--trace-cyan);
}

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

@media (max-width: 800px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-info p {
  color: var(--text-dim);
  margin-bottom: 26px;
  max-width: 46ch;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 30px;
}

.contact-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--trace-green);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact-list a {
  color: var(--text-primary);
}

.contact-list a:hover {
  color: var(--trace-cyan);
}

.contact-socials {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.contact-socials a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
}

.contact-socials a:hover {
  color: var(--trace-cyan);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  border: 1px solid var(--line);
  background: var(--bg-panel);
  border-radius: var(--radius);
  padding: 26px;
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.contact-form input,
.contact-form textarea {
  font-family: var(--font-display);
  background: var(--bg-panel-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  color: var(--text-primary);
  font-size: 0.92rem;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--trace-cyan);
}

.form-note {
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-top: -4px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
  text-align: center;
  padding: 40px 24px;
  border-top: 1px solid var(--line);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  position: relative;
  z-index: 1;
}

footer p {
  margin-bottom: 6px;
}

.footer-sub {
  color: var(--text-faint);
  opacity: 0.5;
}

/* ==========================================================================
   PROJECT DETAIL PAGES
   ========================================================================== */
.project-page-main {
  padding-top: 8px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  margin: 28px auto 0;
  max-width: var(--max-width);
  padding: 0 24px;
}

.back-link-inner {
  display: flex;
  align-items: center;
  gap: 8px;
}

.back-link a {
  color: var(--trace-cyan);
}

.back-link a:hover {
  color: var(--trace-green);
}

.project-hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px 24px 10px;
}

.project-hero .designator {
  margin-bottom: 14px;
  display: inline-block;
}

.project-hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 600;
  margin-bottom: 14px;
}

.project-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.project-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--trace-green);
  border: 1px solid var(--line);
  background: var(--bg-panel);
  padding: 5px 10px;
  border-radius: 5px;
}

.project-badge--status {
  color: var(--copper);
}

.project-hero-desc {
  color: var(--text-dim);
  max-width: 68ch;
  font-size: 1rem;
}

.detail-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 44px 24px;
  border-top: 1px solid var(--line);
}

.detail-section:first-of-type {
  border-top: none;
}

.detail-section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 26px;
}

.detail-section-head h2 {
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  font-weight: 600;
}

.detail-section-head::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line), transparent);
  margin-left: 8px;
}

.detail-body-text {
  color: var(--text-dim);
  max-width: 70ch;
  margin-bottom: 18px;
}

.detail-body-text:last-child {
  margin-bottom: 0;
}

.detail-body-text strong {
  color: var(--text-primary);
}

/* Editor note — visible reminder to swap placeholder content, safe to delete */
.editor-note {
  margin-top: 18px;
  padding: 12px 14px;
  border: 1px dashed var(--copper);
  border-radius: 8px;
  background: rgba(255, 138, 61, 0.06);
  color: var(--copper);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  max-width: 70ch;
}

/* ---- Circuit diagram ---- */
.circuit-frame {
  position: relative;
  width: 100%;
  max-width: 640px;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-panel);
  overflow: hidden;
}

.circuit-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: var(--bg-panel-2);
}

.circuit-fallback {
  display: none;
  height: 100%;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  text-align: center;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 20px;
}

.circuit-fallback p span {
  color: var(--trace-cyan);
}

.circuit-frame.no-photo img {
  display: none;
}

.circuit-frame.no-photo .circuit-fallback {
  display: flex;
}

/* ---- Components list ---- */
.components-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.component-item {
  border: 1px solid var(--line);
  background: var(--bg-panel);
  border-radius: 8px;
  padding: 14px 16px;
}

.component-item h4 {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--trace-cyan);
  margin-bottom: 6px;
  font-weight: 600;
}

.component-item p {
  color: var(--text-dim);
  font-size: 0.86rem;
}

/* ---- Photo gallery ---- */
.detail-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.gallery-tile {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-panel);
  overflow: hidden;
  cursor: pointer;
  padding: 0;
  color: inherit;
  font-family: inherit;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.gallery-tile:hover {
  border-color: var(--trace-cyan);
  transform: translateY(-3px);
}

.gallery-tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.gallery-tile-fallback {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 100%;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-align: center;
  padding: 10px;
  border: 1px dashed var(--line);
}

.gallery-tile.no-photo img {
  display: none;
}

.gallery-tile.no-photo .gallery-tile-fallback {
  display: flex;
}

.gallery-tile.no-photo {
  cursor: default;
}

.gallery-tile.no-photo:hover {
  border-color: var(--line);
  transform: none;
}

.gallery-plus {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--trace-green);
  font-size: 1.1rem;
}

/* ---- Prev/Next project nav footer ---- */
.project-pagenav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 10px 24px 60px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.project-pagenav a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 16px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.project-pagenav a:hover {
  border-color: var(--trace-cyan);
  color: var(--trace-cyan);
}

/* ---- Contact form status feedback ---- */
.form-note {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  min-height: 1.4em;
  transition: color 0.3s ease;
}

.form-note--success {
  color: var(--trace-green);
}

.form-note--error {
  color: var(--copper);
}

/* ==========================================================================
   PAGE-SPECIFIC ENHANCEMENTS (Visual Differentiation)
   ========================================================================== */

/* --- ABOUT: Fact boxes left border accents --- */
.about-facts .fact:nth-child(1) {
  border-left: 2px solid var(--trace-cyan);
  padding-left: 12px;
}

.about-facts .fact:nth-child(2) {
  border-left: 2px solid var(--trace-green);
  padding-left: 12px;
}

.about-facts .fact:nth-child(3) {
  border-left: 2px solid var(--copper);
  padding-left: 12px;
}

.about-facts .fact:nth-child(4) {
  border-left: 2px solid var(--trace-cyan);
  padding-left: 12px;
}

/* --- SKILLS: Card top borders color coding --- */
.skill-card:nth-child(1) {
  border-top: 2px solid var(--trace-cyan);
  background: linear-gradient(180deg, rgba(0, 229, 255, 0.03) 0%, var(--bg-panel) 40%);
}

.skill-card:nth-child(2) {
  border-top: 2px solid var(--trace-green);
  background: linear-gradient(180deg, rgba(57, 255, 136, 0.03) 0%, var(--bg-panel) 40%);
}

.skill-card:nth-child(3) {
  border-top: 2px solid var(--copper);
  background: linear-gradient(180deg, rgba(255, 138, 61, 0.03) 0%, var(--bg-panel) 40%);
}

.skill-card:nth-child(4) {
  border-top: 2px solid var(--text-primary);
  background: linear-gradient(180deg, rgba(220, 224, 230, 0.03) 0%, var(--bg-panel) 40%);
}

/* --- EXPERIENCE: Timeline item subtle card styling --- */
.timeline-content {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  padding: 16px 20px;
  border-radius: 8px;
  transition: border-color 0.3s ease, transform 0.3s ease;
  margin-left: 16px;
}

.timeline-item:hover .timeline-content {
  border-color: var(--trace-green);
  transform: translateX(4px);
}

.timeline-node {
  z-index: 2;
}

/* --- CERTIFICATES: Shimmer effect on hover --- */
.cert-card {
  position: relative;
  overflow: hidden;
}

.cert-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -150%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 138, 61, 0.08), transparent);
  transform: skewX(-20deg);
  transition: all 0.6s ease;
  z-index: 1;
  pointer-events: none;
}

.cert-card:hover::before {
  left: 150%;
}

/* --- CONTACT: Terminal/Glowing input style --- */
.contact-form input,
.contact-form textarea {
  background: rgba(10, 14, 20, 0.8);
  border: 1px solid var(--line);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--trace-cyan);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2), 0 0 8px rgba(0, 229, 255, 0.15);
}