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

:root {
  --bg:          #04070f;
  --bg-2:        #080d1a;
  --bg-3:        #0d1426;
  --accent:      #4895ef;
  --accent-2:    #3a79d4;
  --accent-glow: rgba(72, 149, 239, 0.25);
  --text:        #c8d8f0;
  --text-dim:    #6a82a8;
  --text-bright: #e8f0ff;
  --border:      rgba(72, 149, 239, 0.15);
  --font:        'Inter', 'Segoe UI', system-ui, sans-serif;
  --mono:        'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg) url('bg.jpg') center center / cover no-repeat fixed;
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ─── Photo tint overlay (sits between photo and canvas) ────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 15, 0.72);
  z-index: 0;
  pointer-events: none;
}

/* ─── Canvas Background ──────────────────────────────────────────────────────── */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.75;
}

/* ─── Typography ─────────────────────────────────────────────────────────────── */
h1, h2, h3 {
  color: var(--text-bright);
  font-weight: 600;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.8rem, 7vw, 5.5rem); line-height: 1.05; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); line-height: 1.2; }
h3 { font-size: 1.1rem; }

p {
  color: var(--text);
  line-height: 1.75;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: var(--text-bright); }

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

/* ─── Nav ────────────────────────────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 3rem;
  background: rgba(4, 7, 15, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

#navbar.scrolled {
  background: rgba(4, 7, 15, 0.92);
}

.nav-logo {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.12em;
  border: 1px solid var(--accent);
  padding: 0.3rem 0.65rem;
  border-radius: 4px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.2s;
}

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

/* ─── Buttons ────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: transparent;
  color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text-dim);
  border-color: var(--border);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
}

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 0.9rem;
}

/* ─── Sections ───────────────────────────────────────────────────────────────── */
section {
  position: relative;
  z-index: 2;
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 7rem 2rem;
}

.section-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  opacity: 0.8;
}

/* ─── Hero ───────────────────────────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 2rem;
  position: relative;
}

/* subtle vignette over the canvas */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 80% at 50% 50%,
    transparent 40%, rgba(4, 7, 15, 0.6) 100%);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.8;
}

.hero-name {
  background: linear-gradient(135deg, #e8f0ff 0%, #8cc6ff 50%, #4895ef 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-dim);
  font-weight: 400;
  letter-spacing: 0.05em;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 1;
}

.hero-scroll-hint span {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 1.8s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.2; transform: scaleY(0.8); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ─── About ──────────────────────────────────────────────────────────────────── */
#about {
  background: linear-gradient(180deg, transparent 0%, rgba(8, 13, 26, 0.8) 30%, rgba(8, 13, 26, 0.8) 70%, transparent 100%);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-top: 2.5rem;
}

.about-text h2 {
  margin-bottom: 1.25rem;
}

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

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  border-left: 1px solid var(--border);
  padding-left: 3rem;
}

.stat {}

.stat-num {
  display: block;
  font-size: 2.8rem;
  white-space: nowrap;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  font-family: var(--mono);
}

.stat-label {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

/* ─── Skills ─────────────────────────────────────────────────────────────────── */
#skills {
  background: linear-gradient(180deg, transparent 0%, rgba(13, 20, 38, 0.7) 40%, transparent 100%);
}

#skills h2 {
  margin-bottom: 3rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.skill-card {
  background: rgba(13, 20, 38, 0.7);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem 1.5rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.skill-card:hover {
  border-color: rgba(72, 149, 239, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(72, 149, 239, 0.12);
}

.skill-card:hover::before {
  opacity: 1;
}

.skill-icon {
  font-size: 1.1rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  opacity: 0.8;
}

.skill-card h3 {
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-bright);
  margin-bottom: 1rem;
}

.skill-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.skill-card ul li {
  font-size: 0.85rem;
  color: var(--text-dim);
  padding-left: 0.75rem;
  position: relative;
}

.skill-card ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.7rem;
  opacity: 0.5;
}

/* ─── Projects ───────────────────────────────────────────────────────────────── */
#projects h2 {
  margin-bottom: 3rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: rgba(8, 13, 26, 0.8);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}

.project-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.project-card:hover {
  border-color: rgba(72, 149, 239, 0.35);
  transform: translateY(-4px);
  box-shadow: 0 16px 50px rgba(72, 149, 239, 0.1);
}

.project-card:hover::after {
  transform: scaleX(1);
}

.project-num {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  opacity: 0.6;
}

.project-card h3 {
  font-size: 1.2rem;
  color: var(--text-bright);
}

.project-card p {
  font-size: 0.88rem;
  color: var(--text-dim);
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.project-tags span {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: rgba(72, 149, 239, 0.08);
  border: 1px solid rgba(72, 149, 239, 0.2);
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
}

.project-link {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  transition: color 0.2s;
}

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

/* ─── Contact ────────────────────────────────────────────────────────────────── */
#contact {
  background: linear-gradient(180deg, transparent 0%, rgba(4, 7, 15, 0.9) 60%);
}

.contact-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.contact-inner h2 {
  margin-top: 0.5rem;
}

.contact-sub {
  color: var(--text-dim);
  max-width: 420px;
  margin-bottom: 0.5rem;
}

.social-links {
  display: flex;
  gap: 2rem;
  margin-top: 1rem;
}

.social-links a {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.2s;
}

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

/* ─── Footer ─────────────────────────────────────────────────────────────────── */
footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  background: rgba(4, 7, 15, 0.95);
}

/* ─── Scroll-reveal animation ────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

/* ─── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .about-stats {
    flex-direction: row;
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--border);
    padding-top: 2rem;
    justify-content: space-around;
  }
}

@media (max-width: 600px) {
  #navbar {
    padding: 1rem 1.25rem;
  }
  .nav-links {
    gap: 1.25rem;
  }
  .skills-grid {
    grid-template-columns: 1fr;
  }
  .section-inner {
    padding: 4.5rem 1.25rem;
  }
}