/* ─── Reset & Base ─────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0c0c0d;
  --surface: #141416;
  --border: #222226;
  --accent: #c8f04f;
  --accent2: #7c3aed;
  --fg: #e8e8e8;
  --muted: #666;
  --font-sans: "Inter", "Helvetica Neue", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  cursor: none;
}

/* ─── Custom Cursor ────────────────────────────────────────────────────── */
.cursor {
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition:
    transform 0.1s var(--ease),
    width 0.3s var(--ease),
    height 0.3s var(--ease),
    opacity 0.3s;
  mix-blend-mode: difference;
}
.cursor-ring {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(200, 240, 79, 0.4);
  border-radius: 50%;
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition:
    transform 0.18s var(--ease),
    width 0.3s var(--ease),
    height 0.3s var(--ease),
    border-color 0.3s;
}
body:has(a:hover) .cursor,
body:has(button:hover) .cursor {
  width: 20px;
  height: 20px;
}
body:has(a:hover) .cursor-ring,
body:has(button:hover) .cursor-ring {
  width: 60px;
  height: 60px;
  border-color: var(--accent);
}

/* ─── Noise Overlay ────────────────────────────────────────────────────── */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
  opacity: 0.6;
}

/* ─── Typography ───────────────────────────────────────────────────────── */
h1,
h2,
h3 {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
a {
  color: inherit;
  text-decoration: none;
}
p {
  color: #999;
  max-width: 52ch;
}

/* ─── Nav ──────────────────────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 3rem;
  border-bottom: 1px solid transparent;
  transition:
    border-color 0.4s,
    background 0.4s,
    backdrop-filter 0.4s;
}
nav.scrolled {
  border-color: var(--border);
  background: rgba(12, 12, 13, 0.7);
  backdrop-filter: blur(20px);
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nav-logo span {
  color: var(--muted);
}
.nav-links {
  display: flex;
  gap: 2rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.nav-links a {
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--fg);
}

/* ─── Hero ─────────────────────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: grid;
  grid-template-rows: 1fr auto;
  padding: 0 3rem;
  position: relative;
  overflow: hidden;
}
.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 8rem;
  padding-bottom: 4rem;
  max-width: 900px;
}
.hero-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.hero-label::before {
  content: "";
  display: inline-block;
  width: 2rem;
  height: 1px;
  background: var(--accent);
}
.hero-name {
  font-size: clamp(3.5rem, 9vw, 8rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.95;
  color: var(--fg);
  margin-bottom: 1.5rem;
}
.hero-name em {
  font-style: normal;
  color: transparent;
  -webkit-text-stroke: 1px #444;
  transition: -webkit-text-stroke-color 0.3s;
}
.hero-name em:hover {
  -webkit-text-stroke-color: var(--accent);
}
.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: #666;
  max-width: 44ch;
  line-height: 1.7;
  margin-bottom: 3rem;
}
.hero-tagline strong {
  color: var(--fg);
  font-weight: 500;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 6px;
  cursor: none;
  transition: all 0.25s var(--ease);
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.06);
  opacity: 0;
  transition: opacity 0.2s;
}
.btn:hover::before {
  opacity: 1;
}
.btn-primary {
  background: var(--accent);
  color: #0c0c0d;
  font-weight: 600;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(200, 240, 79, 0.2);
}
.btn-ghost {
  border: 1px solid var(--border);
  color: var(--fg);
}
.btn-ghost:hover {
  border-color: #444;
  transform: translateY(-2px);
}
.btn svg {
  width: 16px;
  height: 16px;
}

.hero-bottom {
  padding-bottom: 2rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}
.hero-stats {
  display: flex;
  gap: 3rem;
}
.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.hero-stat .num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--fg);
}
.hero-stat .lbl {
  font-size: 0.75rem;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}
.scroll-hint {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  writing-mode: vertical-rl;
  text-orientation: mixed;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%,
  100% {
    opacity: 0.3;
  }
  50% {
    opacity: 1;
  }
}

/* ─── Hero BG Grid ─────────────────────────────────────────────────────── */
.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(200, 240, 79, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 240, 79, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(
    ellipse 70% 60% at 60% 50%,
    black 0%,
    transparent 80%
  );
}
.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(124, 58, 237, 0.15) 0%,
    transparent 70%
  );
  right: -100px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  z-index: -1;
  animation: glow 6s ease-in-out infinite alternate;
}
@keyframes glow {
  from {
    transform: translateY(-50%) scale(1);
    opacity: 0.7;
  }
  to {
    transform: translateY(-50%) scale(1.15);
    opacity: 1;
  }
}

/* ─── Section Base ─────────────────────────────────────────────────────── */
section {
  padding: 7rem 3rem;
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.section-label::after {
  content: "";
  flex: 0 0 2rem;
  height: 1px;
  background: var(--border);
}

/* ─── About ────────────────────────────────────────────────────────────── */
#about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
  border-top: 1px solid var(--border);
}
.about-text h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1.5rem;
  color: var(--fg);
}
.about-text p {
  margin-bottom: 1.2rem;
  line-height: 1.8;
  font-size: 1.05rem;
}
.about-visual {
  position: relative;
  aspect-ratio: 4/5;
  max-height: 480px;
}
.about-img-placeholder {
  width: 100%;
  height: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.about-img-placeholder svg {
  width: 48px;
  height: 48px;
  opacity: 0.3;
}
.about-badge {
  position: absolute;
  bottom: -1.5rem;
  right: -1.5rem;
  background: var(--accent);
  color: #0c0c0d;
  padding: 1.2rem 1.6rem;
  border-radius: 10px;
  font-size: 0.8rem;
  font-weight: 700;
  font-family: var(--font-mono);
  line-height: 1.4;
}

/* ─── Skills ───────────────────────────────────────────────────────────── */
#skills {
  border-top: 1px solid var(--border);
}

.skills-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 4rem;
}

.skills-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: visible;
}

@media (max-width: 1100px) {
  .skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .skill-cell:nth-last-child(2):not(.skill-cell--highlight) {
    grid-column: 1 / -1;
  }
}

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

.skill-cell {
  background: var(--bg);
  padding: 1.8rem;
  transition:
    background 0.2s ease,
    transform 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  min-height: 220px;
}

.skill-cell:hover {
  background: var(--surface);
  transform: translateY(-2px);
}

.skill-cell--highlight {
  grid-column: 1 / -1;
  background:
    radial-gradient(
      circle at top left,
      rgba(201, 255, 76, 0.08),
      transparent 55%
    ),
    var(--bg);
  border-top: 1px solid var(--accent);
  position: relative;
}

.skill-cell--highlight::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--accent);
  box-shadow:
    0 0 20px rgba(200, 240, 79, 0.3),
    0 0 60px rgba(200, 240, 79, 0.1);
}

/* --- Hover context tooltip --- */
.skill-cell[data-context] {
  position: relative;
}

.skill-cell[data-context]::after {
  content: attr(data-context);
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.03em;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
  white-space: nowrap;
}

.skill-cell[data-context]:hover::after {
  opacity: 0.7;
}

.skill-icon {
  font-size: 1.4rem;
  margin-bottom: 0.2rem;
}

.skill-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--fg);
  line-height: 1.3;
}

.skill-text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--muted);
  max-width: 32ch;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.skill-tags span {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

/* ─── CTA / Projects Teaser ────────────────────────────────────────────── */
#cta-projects {
  border-top: 1px solid var(--border);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  padding: 8rem 3rem;
  position: relative;
  overflow: hidden;
}
#cta-projects::before {
  content: "WORK";
  position: absolute;
  font-size: clamp(8rem, 20vw, 18rem);
  font-weight: 700;
  color: rgba(255, 255, 255, 0.02);
  letter-spacing: -0.04em;
  pointer-events: none;
  user-select: none;
}
#cta-projects h2 {
  font-size: clamp(2rem, 5vw, 4rem);
  color: var(--fg);
  position: relative;
}
#cta-projects p {
  position: relative;
  font-size: 1.1rem;
}

/* ─── Contact ──────────────────────────────────────────────────────────── */
#contact {
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.contact-left h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1.2rem;
}
.contact-left p {
  margin-bottom: 2rem;
}
.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.contact-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.contact-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateX(4px);
}
.contact-link svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.6;
}
.contact-link:hover svg {
  opacity: 1;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.form-group label {
  font-size: 0.8rem;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}
.form-group input,
.form-group textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
  resize: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}
.form-group textarea {
  min-height: 120px;
}

/* ─── Footer ───────────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}
.footer-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 8px rgba(74, 222, 128, 0.6);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* ─── Projects Page ────────────────────────────────────────────────────── */
.projects-hero {
  padding: 10rem 3rem 5rem;
  border-bottom: 1px solid var(--border);
}
.projects-hero h1 {
  font-size: clamp(3rem, 8vw, 7rem);
  letter-spacing: -0.04em;
}
.projects-hero h1 span {
  color: var(--accent);
}
.projects-hero p {
  margin-top: 1.5rem;
  font-size: 1.1rem;
  max-width: 50ch;
}

.projects-filter {
  padding: 2rem 3rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
}
.filter-btn {
  padding: 0.45rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--muted);
  cursor: none;
  background: none;
  transition: all 0.2s;
}
.filter-btn:hover,
.filter-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(200, 240, 79, 0.06);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1px;
  background: var(--border);
  border-bottom: 1px solid var(--border);
}
.project-card {
  background: var(--bg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: background 0.2s;
  position: relative;
  overflow: hidden;
}
.project-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.project-card:hover {
  background: var(--surface);
}
.project-card:hover::after {
  transform: scaleX(1);
}

/* Card size variants */
.project-card.large {
  grid-column: span 8;
}
.project-card.medium {
  grid-column: span 6;
}
.project-card.small {
  grid-column: span 4;
}

.project-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
}
.project-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.tag {
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  background: rgba(124, 58, 237, 0.15);
  color: #a78bfa;
  border: 1px solid rgba(124, 58, 237, 0.2);
}
.tag.green {
  background: rgba(200, 240, 79, 0.08);
  color: var(--accent);
  border-color: rgba(200, 240, 79, 0.15);
}
.tag.blue {
  background: rgba(59, 130, 246, 0.1);
  color: #93c5fd;
  border-color: rgba(59, 130, 246, 0.2);
}

.project-title {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--fg);
}
.project-desc {
  font-size: 0.9rem;
  color: #888;
  line-height: 1.7;
}
.project-links {
  display: flex;
  gap: 1rem;
  margin-top: auto;
  padding-top: 0.5rem;
}
.project-link {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.2s;
}
.project-link:hover {
  color: var(--accent);
}
.project-link svg {
  width: 14px;
  height: 14px;
}

/* ─── Page Transition ──────────────────────────────────────────────────── */
.page-transition {
  position: fixed;
  inset: 0;
  background: var(--accent);
  z-index: 9990;
  transform: translateX(-100%);
  pointer-events: none;
}
.page-transition.slide-in {
  animation: slideIn 0.5s var(--ease) forwards;
}
.page-transition.slide-out {
  animation: slideOut 0.5s var(--ease) forwards;
}
@keyframes slideIn {
  to {
    transform: translateX(0);
  }
}
@keyframes slideOut {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(100%);
  }
}

/* ─── Reveal Animations ────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.7s var(--ease),
    transform 0.7s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ─── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  nav {
    padding: 1.2rem 1.5rem;
  }
  section,
  .projects-hero,
  .projects-filter {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
  #hero {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
  #about,
  #contact {
    grid-template-columns: 1fr;
  }
  .about-visual {
    display: none;
  }
  .project-card.large,
  .project-card.medium,
  .project-card.small {
    grid-column: span 12;
  }
  .hero-stats {
    gap: 1.5rem;
  }
  footer {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}