/* =========================================================
   TOKENS
   ========================================================= */
:root {
  --bg: #0a0d12;
  --bg-raised: #11151c;
  --bg-card: #151a22;
  --border: #232a35;
  --border-bright: #2e3848;

  --text: #e8ecf1;
  --text-dim: #8b96a5;
  --text-faint: #5b6573;

  --accent: #5eead4;       /* signature teal-green */
  --accent-dim: #2dd4bf;
  --accent-glow: rgba(94, 234, 212, 0.18);

  --warn: #fbbf24;         /* used sparingly, e.g. eyebrow dot */

  --mono: 'JetBrains Mono', monospace;
  --sans: 'Inter', sans-serif;

  --maxw: 1100px;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--sans);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
}

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

/* =========================================================
   AMBIENT GRID BACKDROP (signature texture, not decoration overload)
   ========================================================= */
.grid-backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse 70% 50% at 50% 0%, black 10%, transparent 70%);
}

/* =========================================================
   HEADER / NAV
   ========================================================= */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(10, 13, 18, 0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 2rem;
  max-width: var(--maxw);
  margin: 0 auto;
}

.logo {
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
  letter-spacing: -0.02em;
}

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

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

.nav-links a {
  font-family: var(--mono);
  text-decoration: none;
  font-size: 0.82rem;
  color: var(--text-dim);
  transition: color 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.nav-num {
  font-size: 0.68rem;
  color: var(--text-faint);
}

.nav-links a:hover {
  color: var(--text);
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background-color: var(--text);
  border-radius: 2px;
}

/* =========================================================
   SECTION SHELL
   ========================================================= */
section {
  padding: 130px 2rem 90px;
  max-width: var(--maxw);
  margin: 0 auto;
}

#home {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding-top: 90px;
}

.section-tag {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 0.9rem;
  letter-spacing: 0.02em;
}

.section-title {
  font-family: var(--mono);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.8rem;
}

.section-sub {
  color: var(--text-dim);
  max-width: 560px;
  margin-bottom: 2.5rem;
  font-size: 1rem;
}

/* =========================================================
   HERO
   ========================================================= */
.hero-inner {
  max-width: 760px;
}

.greeting {
  font-family: var(--mono);
  font-size: 1.05rem;
  color: var(--text-dim);
  margin-bottom: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.wave {
  display: inline-block;
  animation: waveHand 2.4s ease-in-out infinite;
  transform-origin: 70% 70%;
}

@keyframes waveHand {
  0%, 60%, 100% { transform: rotate(0deg); }
  10% { transform: rotate(14deg); }
  20% { transform: rotate(-8deg); }
  30% { transform: rotate(14deg); }
  40% { transform: rotate(-4deg); }
  50% { transform: rotate(10deg); }
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.8rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border-bright);
  border-radius: 100px;
  background-color: var(--bg-raised);
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.hero-title {
  font-family: var(--mono);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.6rem;
}

.highlight {
  color: var(--accent);
}

.hero-sub {
  font-size: 1.08rem;
  color: var(--text-dim);
  max-width: 540px;
  margin-bottom: 2.4rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--mono);
  font-size: 0.9rem;
  text-decoration: none;
  padding: 0.85rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
}

.btn-primary {
  background-color: var(--accent);
  color: #06231e;
}

.btn-primary:hover {
  background-color: var(--accent-dim);
  transform: translateY(-2px);
}

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

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

.scroll-cue {
  position: absolute;
  bottom: 2.5rem;
  left: 2rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  max-width: 220px;
}

.scroll-line {
  width: 1px;
  height: 38px;
  background: linear-gradient(to bottom, var(--text-faint), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* =========================================================
   ABOUT
   ========================================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.about-text p {
  color: var(--text-dim);
  margin-bottom: 1.1rem;
  font-size: 1.02rem;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.stack-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.stack-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.stack-list li {
  font-family: var(--mono);
  font-size: 0.88rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--border);
}

.stack-list li:last-child {
  border-bottom: none;
}

.stack-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent);
  flex-shrink: 0;
}

/* =========================================================
   PROJECTS
   ========================================================= */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.6rem;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.project-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-3px);
}

.project-card img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 1.1rem;
  display: block;
  aspect-ratio: 16/10;
  object-fit: cover;
  background-color: var(--bg-raised);
}

.project-card h3 {
  font-family: var(--mono);
  font-size: 1.05rem;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

.project-card p {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-bottom: 1rem;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.1rem;
}

.tech-chip {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--accent);
  background-color: var(--accent-glow);
  padding: 0.25rem 0.6rem;
  border-radius: 5px;
}

.project-links {
  display: flex;
  gap: 1.2rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border);
}

.project-links a {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.project-links a:hover {
  color: var(--accent);
}

.projects-empty {
  font-family: var(--mono);
  color: var(--text-faint);
  font-size: 0.9rem;
  padding: 2rem;
  border: 1px dashed var(--border-bright);
  border-radius: 12px;
  text-align: center;
}

/* =========================================================
   SKILLS
   ========================================================= */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 1rem;
}

.skill-pill {
  font-family: var(--mono);
  font-size: 0.95rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.1rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.skill-pill:hover {
  border-color: var(--accent-dim);
  background-color: var(--bg-raised);
}

.skill-index {
  font-size: 0.7rem;
  color: var(--text-faint);
}

/* =========================================================
   CONTACT
   ========================================================= */
.contact-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--border);
}

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 0.5rem;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  transition: padding-left 0.2s ease, color 0.2s ease;
}

.contact-card:hover {
  padding-left: 1rem;
  color: var(--accent);
}

.contact-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-faint);
  width: 120px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-value {
  font-family: var(--mono);
  font-size: 1.05rem;
  flex: 1;
}

.contact-arrow {
  font-size: 1.1rem;
  color: var(--text-faint);
  transition: transform 0.2s ease;
}

.contact-card:hover .contact-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.5rem 2rem 3rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-faint);
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 800px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 700px) {
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1.2rem 2rem 1.6rem;
    gap: 1.1rem;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform 0.2s ease, opacity 0.2s ease, visibility 0.2s;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav-toggle {
    display: flex;
  }

  section {
    padding: 110px 1.4rem 70px;
  }

  .hero-title {
    font-size: clamp(2rem, 9vw, 2.8rem);
  }
}