/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0d1117;
  --bg-dark:     #010409;
  --bg-card:     #161b22;
  --bg-card2:    #1c2128;
  --border:      #30363d;
  --border-glow: #58a6ff40;
  --accent:      #58a6ff;
  --accent2:     #3fb950;
  --accent3:     #d2a8ff;
  --accent4:     #ffa657;
  --text:        #e6edf3;
  --text-muted:  #8b949e;
  --text-dim:    #484f58;
  --red:         #ff7b72;
  --yellow:      #e3b341;
  --green:       #3fb950;
  --font-mono:   'JetBrains Mono', 'Fira Code', monospace;
  --font-sans:   'Inter', system-ui, sans-serif;
  --radius:      8px;
  --radius-lg:   12px;
  --transition:  0.2s ease;
  --nav-h:       64px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: #79c0ff; }

strong { color: var(--text); font-weight: 600; }
em { color: var(--accent3); font-style: normal; }

::selection { background: #264f78; color: var(--text); }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============================================
   UTILITIES
   ============================================ */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.hash { color: var(--accent); margin-right: 6px; }

.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: #21262d;
  color: var(--accent3);
  border: 1px solid #30363d;
}
.tag--sm { font-size: 0.72rem; padding: 2px 8px; }

.cursor-blink {
  animation: blink 1s step-end infinite;
  color: var(--accent);
}
@keyframes blink { 50% { opacity: 0; } }

/* ============================================
   NAV
   ============================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  z-index: 100;
  transition: background var(--transition);
}

.nav__logo {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent);
  font-weight: 600;
}

.nav__links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav__links a {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav__links a:hover, .nav__links a.active { color: var(--accent); }

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + 40px) 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.15;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 40%, transparent 100%);
}

.hero__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  width: 100%;
  max-width: 720px;
  z-index: 1;
}

/* Terminal */
.hero__terminal {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 0 40px #58a6ff18, 0 8px 32px #00000060;
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-card2);
  border-bottom: 1px solid var(--border);
}

.terminal__title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-left: 8px;
}

.dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot--red    { background: #ff5f57; }
.dot--yellow { background: #febc2e; }
.dot--green  { background: #28c840; }

.terminal__body {
  padding: 20px 24px 24px;
  min-height: 160px;
}

.terminal__line {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.t-prompt { color: var(--accent2); }
.t-cmd    { color: var(--text); }
.t-cursor {
  color: var(--accent);
  animation: blink 1s step-end infinite;
}

.terminal__output {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.8;
}

.terminal__output .out-line { color: var(--text-muted); }
.terminal__output .out-key  { color: var(--accent3); }
.terminal__output .out-val  { color: var(--accent2); }
.terminal__output .out-name { color: var(--accent); font-weight: 700; font-size: 1.3rem; }
.terminal__output .out-role { color: var(--yellow); }

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 1;
}
.hero__scroll span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 2px;
}
.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--border), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50%       { opacity: 1;   transform: scaleY(1.2); }
}

/* ============================================
   SECTIONS
   ============================================ */
.section { padding: 96px 0; }
.section--dark { background: var(--bg-dark); }

.section__title {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 48px;
  color: var(--text);
}

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

.code-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.code-block__header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-card2);
  border-bottom: 1px solid var(--border);
}
.code-block__lang {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-left: 8px;
}
.code-block__body {
  padding: 20px 24px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.9;
  overflow-x: auto;
}
.code-block__body code { background: none; }

.c-key  { color: var(--accent3); }
.c-str  { color: var(--accent2); }
.c-bool { color: var(--accent4); }
.c-comment { color: var(--text-dim); font-style: italic; }

.about__bio {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 0.98rem;
}

.about__stats {
  display: flex;
  gap: 24px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat__value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
}
.stat__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}

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

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.skill-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px #58a6ff18;
}
.skill-card__title {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}
.skill-card__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ============================================
   PROJECTS
   ============================================ */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px #58a6ff18;
}
.project-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.project-card__links { display: flex; align-items: center; gap: 12px; }
.project-card__title {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}
.project-card__desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  flex: 1;
}
.project-card__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.icon-link { color: var(--text-dim); font-family: var(--font-mono); font-size: 0.8rem; transition: color var(--transition); }
.icon-link:hover { color: var(--text); }

.badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
  background: #3fb95020;
  color: var(--accent2);
  border: 1px solid #3fb95040;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  padding: 24px 0;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer__copy {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
}
.footer__link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer__link:hover { color: var(--accent); }
.footer__links { display: flex; gap: 16px; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .nav__links { display: none; flex-direction: column; }
  .nav__links.open {
    display: flex;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 16px 32px;
    gap: 20px;
  }
  .nav__hamburger { display: flex; }

  .about__grid      { grid-template-columns: 1fr; }
  .projects__grid   { grid-template-columns: 1fr; }


  .section__title   { font-size: 1.3rem; }
  .terminal__line   { font-size: 0.88rem; }
}

@media (max-width: 480px) {
  .about__stats { gap: 16px; }
  .nav { padding: 0 20px; }
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}