:root {
  --bg: #070b14;
  --surface: rgba(16, 23, 38, 0.82);
  --surface-2: rgba(20, 31, 52, 0.7);
  --text: #e6edf7;
  --muted: #9fb0ca;
  --primary: #00d4ff;
  --secondary: #7a8cff;
  --border: rgba(137, 177, 255, 0.24);
  --shadow: 0 20px 40px rgba(2, 7, 15, 0.45);
  --accent-glow: 0 0 24px rgba(0, 212, 255, 0.4);
}

body[data-theme="light"] {
  --bg: #f6f9ff;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-2: rgba(235, 243, 255, 0.8);
  --text: #0c1a2d;
  --muted: #4e5f78;
  --primary: #0066ff;
  --secondary: #4a62ff;
  --border: rgba(74, 98, 255, 0.2);
  --shadow: 0 18px 35px rgba(32, 71, 133, 0.14);
  --accent-glow: 0 0 24px rgba(0, 102, 255, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, sans-serif;
  background: radial-gradient(circle at 20% 0%, #13203a 0%, var(--bg) 40%),
    radial-gradient(circle at 80% 20%, rgba(56, 87, 160, 0.3), transparent 30%);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background 0.35s ease, color 0.35s ease;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, #00d4ff, #7a8cff, #00ff95);
  z-index: 30;
  box-shadow: var(--accent-glow);
}

.particle-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
}

.scanlines {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.02),
    rgba(255, 255, 255, 0.02) 1px,
    transparent 1px,
    transparent 4px
  );
  pointer-events: none;
  z-index: 0;
  mix-blend-mode: soft-light;
}

.noise-overlay {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.04) 0.7px, transparent 0.7px);
  background-size: 3px 3px;
  pointer-events: none;
  z-index: 0;
}

.cursor-glow {
  position: fixed;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.22) 0%, transparent 65%);
  filter: blur(5px);
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 1;
  transition: opacity 0.3s ease;
}

.site-header {
  position: sticky;
  top: 12px;
  margin: 1rem auto 0;
  width: min(1080px, calc(100% - 2rem));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow), var(--accent-glow);
  z-index: 10;
}

.section-dock {
  position: fixed;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 12;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.section-dock a {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.1);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.section-dock a.active {
  transform: scale(1.25);
  background: var(--primary);
  box-shadow: var(--accent-glow);
}

.brand {
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  position: relative;
}

.site-nav a:hover {
  color: var(--primary);
}

.site-nav a.active {
  color: var(--primary);
}

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  cursor: pointer;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
  box-shadow: var(--accent-glow);
}

main {
  width: min(1080px, calc(100% - 2rem));
  margin: 1rem auto 3rem;
  position: relative;
  z-index: 2;
}

.section {
  margin: 1rem 0;
  padding: clamp(1.1rem, 2vw, 2rem);
  border-radius: 20px;
  border: 1px solid var(--border);
  background: linear-gradient(160deg, var(--surface), var(--surface-2));
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.section::before {
  content: "";
  position: absolute;
  inset: -1px;
  background: linear-gradient(
    120deg,
    rgba(0, 212, 255, 0.12),
    transparent 40%,
    rgba(122, 140, 255, 0.1)
  );
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.section:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 212, 255, 0.45);
  box-shadow: var(--shadow), var(--accent-glow);
}

.section:hover::before {
  opacity: 1;
}

.hero h1 {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2rem, 5vw, 3.8rem);
  margin: 0.3rem 0;
  text-shadow: 0 0 40px rgba(0, 212, 255, 0.24);
  transform: translateY(calc(var(--scrollY, 0px) * -0.05));
}

.eyebrow {
  display: inline-block;
  margin: 0;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: rgba(0, 212, 255, 0.14);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
  box-shadow: var(--accent-glow);
}

.status-line {
  margin: 0.8rem 0 0.2rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.88rem;
  letter-spacing: 0.02em;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00ff95;
  box-shadow: 0 0 10px #00ff95;
  animation: pulseDot 1.8s ease-in-out infinite;
}

@keyframes pulseDot {
  0%,
  100% {
    opacity: 0.5;
    transform: scale(0.9);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
}

.subtitle {
  max-width: 770px;
  color: var(--muted);
}

.hero-console {
  margin-top: 1rem;
  width: min(550px, 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.9rem;
  background: rgba(5, 9, 17, 0.76);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.88rem;
  line-height: 1.45;
  box-shadow: inset 0 0 25px rgba(0, 212, 255, 0.08);
}

body[data-theme="light"] .hero-console {
  background: rgba(231, 240, 255, 0.9);
}

.hero-console p {
  margin: 0.08rem 0;
  color: var(--muted);
}

.hero-console p:first-child {
  color: var(--primary);
}

.hero-console span {
  color: #00ff95;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1rem 0;
}

.hero-meta span {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-size: 0.86rem;
  color: var(--muted);
}

.cta-group {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  text-decoration: none;
  font-weight: 600;
  padding: 0.65rem 1rem;
  border-radius: 10px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(120deg, var(--primary), var(--secondary));
  color: #08101d;
  box-shadow: var(--accent-glow);
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
}

.scroll-hint {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  animation: floatHint 2.2s ease-in-out infinite;
}

@keyframes floatHint {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.6;
  }
  50% {
    transform: translateY(4px);
    opacity: 1;
  }
}

h2 {
  margin-top: 0;
  font-family: "Space Grotesk", sans-serif;
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem;
  background: rgba(9, 15, 27, 0.35);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  transform-style: preserve-3d;
}

body[data-theme="light"] .card {
  background: rgba(255, 255, 255, 0.7);
}

.card h3 {
  margin-top: 0;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.5);
  box-shadow: var(--accent-glow);
}

ul {
  margin: 0.5rem 0 0;
  padding-left: 1rem;
}

.cert-card img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin-bottom: 0.8rem;
}

a {
  color: var(--primary);
}

.site-footer {
  width: min(1080px, calc(100% - 2rem));
  margin: 0 auto 2rem;
  padding: 1rem;
  text-align: center;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.reveal {
  opacity: 0;
  transform: translateY(24px) scale(0.985);
  transition: opacity 0.75s ease, transform 0.75s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.magnetic {
  will-change: transform;
}

@media (max-width: 900px) {
  .grid.two,
  .grid.three {
    grid-template-columns: 1fr;
  }

  .site-header {
    flex-wrap: wrap;
    justify-content: center;
  }

  .section-dock {
    display: none;
  }
}

@media (max-width: 680px) {
  .site-nav {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .cursor-glow {
    display: none;
  }
}

/* ── Projects section ── */

#projects {
  border-color: rgba(0, 212, 255, 0.35);
  box-shadow: var(--shadow), 0 0 48px rgba(0, 212, 255, 0.12);
}

#projects::before {
  opacity: 0.45;
}

#projects .eyebrow {
  margin-bottom: 0.6rem;
}

.project-showcase {
  margin-top: 0.5rem;
  padding: clamp(1rem, 2vw, 1.5rem);
  border: 1px solid rgba(0, 212, 255, 0.28);
  border-radius: 18px;
  background: linear-gradient(
    155deg,
    rgba(0, 212, 255, 0.06),
    rgba(9, 15, 27, 0.45) 45%,
    rgba(122, 140, 255, 0.05)
  );
  position: relative;
  overflow: hidden;
}

body[data-theme="light"] .project-showcase {
  background: linear-gradient(
    155deg,
    rgba(0, 102, 255, 0.06),
    rgba(255, 255, 255, 0.85) 45%,
    rgba(74, 98, 255, 0.05)
  );
}

.project-showcase::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -15%;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.14), transparent 68%);
  pointer-events: none;
}

.project-showcase-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.project-title-block h3 {
  margin: 0.35rem 0 0.2rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.45rem, 3vw, 2rem);
  text-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
}

.project-version {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 255, 149, 0.45);
  background: rgba(0, 255, 149, 0.1);
  color: #00ff95;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.project-tagline {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.project-repo-btn {
  white-space: nowrap;
  flex-shrink: 0;
}

.project-description {
  margin: 1.1rem 0 0.85rem;
  max-width: 860px;
  font-size: 1.02rem;
  position: relative;
  z-index: 1;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1.1rem;
  position: relative;
  z-index: 1;
}

.project-meta span {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
  color: var(--muted);
  background: rgba(9, 15, 27, 0.25);
}

body[data-theme="light"] .project-meta span {
  background: rgba(255, 255, 255, 0.65);
}

.project-details {
  position: relative;
  z-index: 1;
}

.project-details h4,
.project-gallery h4 {
  margin: 0 0 0.65rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
  color: var(--primary);
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.45rem;
}

.feature-list li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--text);
  font-size: 0.92rem;
}

.feature-list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tech-tags span {
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(122, 140, 255, 0.35);
  background: rgba(122, 140, 255, 0.12);
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tech-tags span:hover {
  transform: translateY(-2px);
  box-shadow: var(--accent-glow);
}

.project-highlights p {
  margin: 0 0 0.65rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.project-highlights p:last-child {
  margin-bottom: 0;
}

.project-gallery {
  margin-top: 1.25rem;
  position: relative;
  z-index: 1;
}

.gallery-intro {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.gallery-item {
  margin: 0;
}

.gallery-trigger {
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: rgba(5, 9, 17, 0.5);
  cursor: pointer;
  position: relative;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

body[data-theme="light"] .gallery-trigger {
  background: rgba(255, 255, 255, 0.8);
}

.gallery-trigger img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top;
  transition: transform 0.35s ease;
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding: 0.75rem;
  background: linear-gradient(to top, rgba(5, 9, 17, 0.85), transparent 55%);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.gallery-trigger:hover,
.gallery-trigger:focus-visible {
  border-color: rgba(0, 212, 255, 0.55);
  box-shadow: var(--accent-glow);
  outline: none;
}

.gallery-trigger:hover img,
.gallery-trigger:focus-visible img {
  transform: scale(1.04);
}

.gallery-trigger:hover .gallery-overlay,
.gallery-trigger:focus-visible .gallery-overlay {
  opacity: 1;
}

.gallery-item figcaption {
  margin-top: 0.45rem;
  font-size: 0.82rem;
  color: var(--muted);
  text-align: center;
}

.gallery-lightbox {
  width: min(960px, calc(100% - 2rem));
  max-height: calc(100vh - 2rem);
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow), var(--accent-glow);
}

.gallery-lightbox::backdrop {
  background: rgba(4, 8, 16, 0.82);
  backdrop-filter: blur(4px);
}

body[data-theme="light"] .gallery-lightbox::backdrop {
  background: rgba(12, 26, 45, 0.55);
}

.lightbox-close {
  position: absolute;
  top: 0.6rem;
  right: 0.75rem;
  z-index: 2;
  border: 1px solid var(--border);
  border-radius: 999px;
  width: 2rem;
  height: 2rem;
  background: var(--surface-2);
  color: var(--text);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.lightbox-close:hover {
  transform: scale(1.05);
  box-shadow: var(--accent-glow);
}

.lightbox-figure {
  margin: 0;
  padding: 1rem;
}

.lightbox-figure img {
  display: block;
  width: 100%;
  max-height: calc(100vh - 8rem);
  object-fit: contain;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.lightbox-figure figcaption {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

@media (max-width: 900px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .project-showcase-header {
    flex-direction: column;
    align-items: stretch;
  }

  .project-repo-btn {
    text-align: center;
  }
}