:root {
  --bg: #0a0a0f;
  --bg-card: #111120;
  --cyan: #00f0ff;
  --magenta: #ff00aa;
  --purple: #7000ff;
  --text: #e0e0f0;
  --text-dim: #707090;
  --border: #1a1a3a;
  --font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;
  --font-sans: "Inter", "SF Pro", system-ui, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0, 240, 255, 0.015) 2px,
      rgba(0, 240, 255, 0.015) 4px
    );
  pointer-events: none;
  z-index: 9999;
}

a {
  color: var(--cyan);
  text-decoration: none;
  transition: color 0.2s, text-shadow 0.2s;
}

a:hover {
  color: var(--magenta);
  text-shadow: 0 0 8px var(--magenta);
}

::selection {
  background: var(--magenta);
  color: var(--bg);
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ─── Nav ─── */

nav {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
}

nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--cyan);
  text-shadow: 0 0 12px var(--cyan);
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  transition: width 0.3s;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--cyan);
}

/* ─── Hero ─── */

.hero {
  padding: 6rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: 50%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
  transform: translate(-50%, -30%);
  pointer-events: none;
}

.hero h1 {
  font-family: var(--font-mono);
  font-size: 4rem;
  font-weight: 800;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--cyan);
  text-shadow:
    0 0 20px var(--cyan),
    0 0 60px var(--cyan),
    0 0 100px rgba(0, 240, 255, 0.3);
  margin-bottom: 1rem;
  position: relative;
}

.hero .tagline-scroll {
  max-width: 600px;
  margin: 0 auto 2rem;
  overflow: hidden;
  white-space: nowrap;
}

.hero .tagline {
  display: flex;
  font-size: 1.15rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  width: fit-content;
  animation: scroll-tagline 40s linear infinite;
}

.hero .tagline span {
  flex-shrink: 0;
  padding-right: 3rem;
}

@keyframes scroll-tagline {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.hero .glitch {
  position: relative;
  display: inline-block;
}

.hero .glitch::before,
.hero .glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero .glitch::before {
  color: var(--magenta);
  z-index: -1;
  animation: glitch-shift 3s infinite linear alternate-reverse;
}

.hero .glitch::after {
  color: var(--cyan);
  z-index: -2;
  animation: glitch-shift 2s infinite linear alternate-reverse;
}

@keyframes glitch-shift {
  0% { transform: translate(0); }
  20% { transform: translate(-2px, 1px); }
  40% { transform: translate(2px, -1px); }
  60% { transform: translate(-1px, -2px); }
  80% { transform: translate(1px, 2px); }
  100% { transform: translate(0); }
}

/* ─── Buttons ─── */

.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  background: transparent;
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.btn:hover {
  background: var(--cyan);
  color: var(--bg);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
  text-shadow: none;
}

.btn-outline {
  border-color: var(--magenta);
  color: var(--magenta);
}

.btn-outline:hover {
  background: var(--magenta);
  color: var(--bg);
  box-shadow: 0 0 20px rgba(255, 0, 170, 0.4);
}

/* ─── Sections ─── */

.section {
  padding: 4rem 0;
}

.section-title {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.section-title::before {
  content: "//";
  color: var(--magenta);
}

.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--border), transparent);
}

/* ─── Cards ─── */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1.5rem;
  border-radius: 4px;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.card:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.1);
}

.card h3 {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan);
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  border: 1px solid var(--border);
  color: var(--text-dim);
  letter-spacing: 1px;
}

/* ─── Grid ─── */

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem;
}

/* ─── About page ─── */

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
}

.about-content p {
  color: var(--text-dim);
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

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

.skills .tag {
  font-size: 0.8rem;
  padding: 0.3rem 0.8rem;
}

.skills .tag:hover {
  border-color: var(--magenta);
  color: var(--magenta);
  box-shadow: 0 0 8px rgba(255, 0, 170, 0.2);
}

/* ─── Footer ─── */

footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

footer a {
  color: var(--cyan);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.social-links a {
  font-size: 1.25rem;
  color: var(--text-dim);
  transition: color 0.2s, text-shadow 0.2s;
  display: inline-flex;
  align-items: center;
}

.social-links a:hover {
  color: var(--cyan);
  text-shadow: 0 0 8px var(--cyan);
}

.social-links .icon {
  display: block;
}

/* ─── 404 ─── */

.error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
}

.error-page h1 {
  font-family: var(--font-mono);
  font-size: 6rem;
  color: var(--magenta);
  text-shadow: 0 0 30px var(--magenta);
  margin-bottom: 1rem;
}

.error-page p {
  color: var(--text-dim);
  margin-bottom: 2rem;
}

/* ─── Animations ─── */

@keyframes fade-in {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fade-in 0.6s ease-out forwards;
}

.fade-in-delay-1 { animation-delay: 0.2s; }
.fade-in-delay-2 { animation-delay: 0.4s; }
.fade-in-delay-3 { animation-delay: 0.6s; }

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.reveal-delay-1 { transition-delay: 0.2s; }
.reveal-delay-2 { transition-delay: 0.4s; }
.reveal-delay-3 { transition-delay: 0.6s; }

/* ─── Responsive ─── */

@media (max-width: 768px) {
  .hero h1 { font-size: 2.5rem; letter-spacing: 3px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .about-content { grid-template-columns: 1fr; }
  .nav-links { gap: 1rem; }
  .nav-links a { font-size: 0.75rem; }
}