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

:root {
  --bg:         #f8f9fc;
  --bg-alt:     #f0f2f8;
  --surface:    #ffffff;
  --surface2:   #e8eaf2;
  --border:     rgba(0,0,0,0.08);
  --accent:     #7c3aed;
  --accent2:    #0891b2;
  --accent3:    #f59e0b;
  --text:       #0f0d1a;
  --text-muted: #3b3a50;
  --text-dim:   #1a1830;
  --grad:       linear-gradient(135deg, #7c3aed, #06b6d4);
  --grad2:      linear-gradient(135deg, #f59e0b, #ef4444);
  --radius:     16px;
  --radius-sm:  8px;
  --nav-h:      72px;
  --transition: 0.35s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
strong { font-weight: 600; color: #0f0d1a; }
p { color: #2d2b45; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg-alt); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 4px; }

/* ===== CONTAINER ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== NAV ===== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  background: rgba(248,249,252,0.88);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 1.25rem;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: #2d2b45;
  letter-spacing: 0.02em;
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--grad);
  border-radius: 2px;
  transition: width var(--transition);
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { width: 100%; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; flex-direction: column; gap: 5px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text-muted); border-radius: 2px; transition: var(--transition); }

/* ===== HERO ===== */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
#particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  padding-top: var(--nav-h);
}
.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  color: var(--accent2);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 0.6s 0.2s forwards;
}
.hero-name {
  font-size: clamp(3.5rem, 10vw, 7rem);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #1e1b4b 30%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.35s forwards;
}
.hero-tagline {
  display: flex;
  align-items: center;
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.5s forwards;
}
.typed {
  color: var(--accent2);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
}
.cursor {
  color: var(--accent);
  animation: blink 0.8s step-end infinite;
  margin-left: 2px;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-sub {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.65s forwards;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.7s 0.8s forwards;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 0 30px rgba(124,58,237,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 50px rgba(124,58,237,0.5);
}
.btn-ghost {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text-dim);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ===== HERO SCROLL ===== */
.hero-scroll {
  position: fixed;
  bottom: 2.5rem;
  left: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  animation: fadeUp 0.7s 1.1s forwards;
}
.hero-scroll span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
}
.scroll-line {
  width: 1.5px;
  height: 60px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.8); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ===== SECTIONS ===== */
.section { padding: 8rem 0; }
.section-alt { background: var(--bg-alt); }

.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #0f0d1a;
  margin-bottom: 3rem;
}

/* ===== REVEAL ANIMATIONS ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.about-text p { margin-bottom: 1.25rem; }
.about-text .section-title { margin-bottom: 1.5rem; }

.about-stats {
  display: flex;
  gap: 2rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.stat { display: flex; flex-direction: column; gap: 0.25rem; }
.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 0.8rem; color: var(--text-muted); }

.about-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  overflow: hidden;
}
.card-glow {
  position: absolute;
  top: -60px; right: -60px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(124,58,237,0.15), transparent 70%);
  pointer-events: none;
}
.about-photo-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 1.75rem;
}
.about-photo {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(124,58,237,0.3);
  box-shadow: 0 0 0 6px rgba(124,58,237,0.07);
}
.info-block { display: flex; flex-direction: column; gap: 1rem; }
.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  gap: 1rem;
}
.info-row:last-child { border-bottom: none; padding-bottom: 0; }
.info-key { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; white-space: nowrap; }
.info-val { font-size: 0.875rem; color: var(--text); font-weight: 500; text-align: right; }
.info-val a { color: var(--accent2); transition: color var(--transition); }
.info-val a:hover { color: var(--accent); }

/* ===== SKILLS ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}
.skill-category {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition);
}
.skill-category:hover {
  border-color: rgba(124,58,237,0.4);
  transform: translateY(-4px);
}
.skill-category h3 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  font-family: 'JetBrains Mono', monospace;
}

/* ===== TAGS ===== */
.skill-tags, .tl-tags, .project-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  background: rgba(124,58,237,0.12);
  border: 1px solid rgba(124,58,237,0.25);
  color: var(--accent);
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.tag:hover {
  background: rgba(124,58,237,0.18);
  border-color: var(--accent);
  color: #4c1d95;
}
.tag-sm { font-size: 0.72rem; padding: 0.25rem 0.7rem; }

/* ===== TIMELINE ===== */
.timeline {
  position: relative;
  padding-left: 2.5rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 1.5px;
  height: calc(100% - 8px);
  background: linear-gradient(to bottom, var(--accent), transparent);
}
.timeline-item {
  position: relative;
  margin-bottom: 3rem;
  transition-delay: calc(var(--i, 0) * 0.1s);
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -2.65rem;
  top: 8px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(124,58,237,0.7);
  border: 2px solid var(--bg-alt);
}
.timeline-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent2);
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}
.timeline-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}
.timeline-card:hover {
  border-color: rgba(124,58,237,0.35);
  transform: translateX(6px);
}
.tl-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.875rem;
  flex-wrap: wrap;
}
.tl-header h3 { font-size: 1.05rem; font-weight: 700; color: #0f0d1a; }
.tl-org {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}
.timeline-card p { font-size: 0.9rem; margin-bottom: 1rem; }
.timeline-card .tl-tags { margin-top: 0.5rem; }

/* ===== PROJECTS ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.project-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color var(--transition), transform var(--transition);
}
.project-card:hover {
  border-color: rgba(124,58,237,0.45);
  transform: translateY(-6px);
}
.project-glow {
  position: absolute;
  top: -80px; right: -80px;
  width: 220px; height: 220px;
  background: radial-gradient(circle, rgba(6,182,212,0.08), transparent 70%);
  pointer-events: none;
  transition: opacity var(--transition);
}
.project-card:hover .project-glow { opacity: 2; }
.project-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  font-weight: 700;
}
.project-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #0f0d1a;
  line-height: 1.3;
}
.project-card p { font-size: 0.875rem; flex: 1; }
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent2);
  letter-spacing: 0.02em;
  transition: gap var(--transition), color var(--transition);
  margin-top: auto;
}
.project-link:hover { color: var(--accent); gap: 0.7rem; }
.arrow { transition: transform var(--transition); }
.project-link:hover .arrow { transform: translateX(4px); }

/* ===== CONTACT ===== */
.contact-container { text-align: center; }
.contact-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 3rem;
}
.contact-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: border-color var(--transition), color var(--transition), transform var(--transition), background var(--transition);
  min-width: 320px;
  justify-content: center;
}
.contact-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(124,58,237,0.07);
  transform: translateY(-3px);
}

/* ===== FOOTER ===== */
footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}
footer p { font-size: 0.85rem; color: var(--text-muted); }
footer strong { color: var(--text-dim); }

/* ===== KEYFRAMES ===== */
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
  from { opacity: 0; transform: translateY(30px); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(248,249,252,0.97);
    backdrop-filter: blur(20px);
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border);
  }
  .hero-name { font-size: 3rem; }
  .section { padding: 5rem 0; }
  .about-stats { flex-wrap: wrap; gap: 1.5rem; }
  .contact-btn { min-width: unset; width: 100%; }
}