/* ===============================
   CSS VARIABLES
================================ */
:root {
  --bg:       #080b12;
  --bg2:      #0d1117;
  --surface:  #111827;
  --surface2: #1a2234;
  --border:   #1e2d45;
  --accent:   #00d4ff;
  --accent2:  #7c3aed;
  --accent3:  #f59e0b;
  --text:     #e2e8f0;
  --text-muted: #64748b;
  --text-dim:   #94a3b8;
  --green:    #10b981;
  --font-mono: 'JetBrains Mono', monospace;
  --font-display: 'Syne', sans-serif;
}

/* ===============================
   RESET
================================ */
*, *::before, *::after {
  margin: 0; padding: 0;
  box-sizing: border-box;
  text-decoration: none;
}
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}
html::-webkit-scrollbar { width: 4px; }
html::-webkit-scrollbar-track { background: var(--bg); }
html::-webkit-scrollbar-thumb { background: var(--accent2); border-radius: 4px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  overflow-x: hidden;
}
::selection { background: var(--accent2); color: #fff; }

/* ===============================
   NOISE TEXTURE
================================ */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.4;
}

/* ===============================
   GRID BACKGROUND
================================ */
.grid-bg {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ===============================
   NAVBAR
================================ */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6%;
  height: 64px;
  background: rgba(8, 11, 18, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease;
}
header.scrolled {
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

.logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 4px;
}
.logo .bracket { color: var(--accent); }
.logo .name    { color: var(--accent2); }

.navbar ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  align-items: center;
}
.navbar ul li a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  font-weight: 600;
  letter-spacing: 0.05em;
  transition: color 0.2s;
  position: relative;
}
.navbar ul li a .num { color: var(--accent); margin-right: 4px; }
.navbar ul li a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}
.navbar ul li a:hover,
.navbar ul li a.active { color: var(--text); }
.navbar ul li a:hover::after,
.navbar ul li a.active::after { width: 100%; }

/* Hamburger */
#menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-direction: column;
  gap: 5px;
}
#menu span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  transition: all 0.3s ease;
  border-radius: 2px;
}
#menu.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
#menu.open span:nth-child(2) { opacity: 0; }
#menu.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
  #menu { display: flex; }
  .navbar {
    position: fixed;
    top: 64px; right: -100%;
    width: 280px;
    height: calc(100vh - 64px);
    background: var(--bg2);
    border-left: 1px solid var(--border);
    transition: right 0.35s cubic-bezier(0.4,0,0.2,1);
    padding: 2rem;
    overflow-y: auto;
  }
  .navbar.nav-toggle { right: 0; }
  .navbar ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  .navbar ul li { width: 100%; }
  .navbar ul li a {
    display: block;
    padding: 0.8rem 1rem;
    font-size: 0.9rem;
    border-radius: 6px;
    transition: all 0.2s;
  }
  .navbar ul li a:hover,
  .navbar ul li a.active {
    background: var(--surface);
    color: var(--accent);
  }
  .navbar ul li a::after { display: none; }
}

/* ===============================
   SECTION COMMON
================================ */
section {
  position: relative;
  z-index: 1;
  padding: 100px 8%;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1rem;
}
.section-label .line {
  height: 1px;
  flex: 1;
  background: linear-gradient(to right, var(--accent2), transparent);
  max-width: 200px;
}
.section-label h2 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.1;
  margin-bottom: 2.5rem;
}
.section-title span { color: var(--accent); }

/* ===============================
   SHARED BUTTONS
================================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--accent2);
  color: #fff;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}
.btn-primary:hover {
  background: transparent;
  border-color: var(--accent2);
  color: var(--accent2);
  transform: translateY(-2px);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  color: var(--text-dim);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ===============================
   HERO SECTION
================================ */
.home {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
  overflow: hidden;
}
.home::before {
  content: '';
  position: absolute;
  top: -20%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(124,58,237,0.15) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.home::after {
  content: '';
  position: absolute;
  bottom: -20%; left: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,212,255,0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.home-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
  width: 100%;
  z-index: 2;
  position: relative;
}
.home-content { flex: 1; max-width: 600px; }

.home-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 100px;
  padding: 6px 16px;
  margin-bottom: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.home-badge .dot {
  width: 6px; height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%,100% { opacity:1; transform:scale(1); }
  50%      { opacity:0.5; transform:scale(0.8); }
}

.home-content h1 {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}
.home-content h1 .greeting {
  display: block;
  font-size: 0.38em;
  font-family: var(--font-mono);
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.1em;
  margin-bottom: 0.4em;
}
.home-content h1 .first { color: var(--text); }
.home-content h1 .last  { color: var(--accent); }

.typing-wrapper {
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2.2vw, 1.2rem);
  color: var(--text-dim);
  margin: 1.2rem 0 2rem;
  min-height: 2em;
}
.typing-wrapper .prefix { color: var(--accent3); }
.typing-text  { color: var(--accent2); }
.typing-cursor {
  display: inline-block;
  width: 2px; height: 1.1em;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 0.8s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.home-about {
  font-size: 1rem;
  color: var(--text-dim);
  line-height: 1.8;
  max-width: 500px;
  margin-bottom: 2.5rem;
}
.home-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}
.social-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 2.5rem;
}
.social-row a {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 1rem;
  transition: all 0.2s ease;
}
.social-row a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-3px);
}

/* Hero Image */
.home-image { flex: 0 0 auto; position: relative; }
.avatar-frame {
  position: relative;
  width: 320px; height: 320px;
}
.avatar-frame::before {
  content: '';
  position: absolute; inset: -2px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  z-index: 0;
}
.avatar-frame::after {
  content: '';
  position: absolute; inset: -16px;
  border: 1px solid rgba(0,212,255,0.15);
  border-radius: 32px;
  z-index: 0;
}
.avatar-frame img {
  position: relative; z-index: 1;
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: 22px;
  filter: grayscale(20%);
  transition: filter 0.3s;
  user-select: none;
  -webkit-user-drag: none;
}
.avatar-frame:hover img { filter: grayscale(0%); }
.avatar-badge {
  position: absolute;
  bottom: -12px; left: 50%;
  transform: translateX(-50%);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 18px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent3);
  white-space: nowrap;
  z-index: 2;
}
.floating-tag {
  position: absolute;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  z-index: 3;
  animation: float 3s ease-in-out infinite;
}
.floating-tag.tag1 {
  top: -20px; right: -30px;
  color: var(--green);
  border-color: rgba(16,185,129,0.3);
  animation-delay: 0s;
}
.floating-tag.tag2 {
  bottom: 30px; left: -40px;
  color: var(--accent);
  border-color: rgba(0,212,255,0.3);
  animation-delay: 1.5s;
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

@media (max-width: 900px) {
  .home-inner { flex-direction: column-reverse; gap: 3rem; text-align: center; }
  .home-content { max-width: 100%; }
  .home-actions, .social-row { justify-content: center; }
  .avatar-frame { width: 240px; height: 240px; }
  .floating-tag  { display: none; }
}
@media (max-width: 500px) {
  .home { padding: 80px 5% 40px; }
  .avatar-frame { width: 200px; height: 200px; }
}

/* ===============================
   ABOUT SECTION
================================ */
.about { background: var(--bg2); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 5rem;
  align-items: center;
}
.about-img-wrap { position: relative; }
.about-img-wrap img {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--border);
  filter: grayscale(30%);
  transition: filter 0.4s;
  display: block;
}
.about-img-wrap:hover img { filter: grayscale(0%); }
.about-img-wrap::before {
  content: '';
  position: absolute;
  top: 16px; left: 16px;
  right: -16px; bottom: -16px;
  border: 1px solid var(--accent2);
  border-radius: 16px;
  z-index: -1;
  opacity: 0.3;
}
.about-content .role-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent3);
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.2);
  border-radius: 4px;
  padding: 4px 12px;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.about-content h3 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 1.5rem;
}
.about-content p {
  font-size: 0.95rem;
  color: var(--text-dim);
  line-height: 1.9;
  margin-bottom: 1.2rem;
}
.about-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 2rem 0;
}
.info-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
}
.info-item .label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.info-item .value {
  font-size: 0.85rem;
  color: var(--text);
  font-weight: 600;
}

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .about-img-wrap { max-width: 320px; margin: 0 auto; }
  .about-img-wrap::before { display: none; }
}

/* ===============================
   SKILLS SECTION
================================ */
.skills { background: var(--bg); }

#skillsContainer {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  cursor: default;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}
.skill-card::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(124,58,237,0.05), rgba(0,212,255,0.05));
  opacity: 0;
  transition: opacity 0.3s;
}
.skill-card:hover {
  border-color: var(--accent2);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(124,58,237,0.15);
}
.skill-card:hover::before { opacity: 1; }
.skill-card img {
  width: 40px; height: 40px;
  object-fit: contain;
}
.skill-card span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  text-align: center;
  font-weight: 600;
}
@media (max-width: 500px) {
  #skillsContainer { grid-template-columns: repeat(3, 1fr); gap: 0.75rem; }
}

/* ===============================
   EXPERIENCE SECTION
================================ */
.experience { background: var(--bg2); }

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 24px; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent2), transparent);
}
.timeline-item {
  padding-left: 70px;
  position: relative;
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateX(-20px);
  transition: all 0.5s ease;
}
.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}
.timeline-dot {
  position: absolute;
  left: 16px; top: 18px;
  width: 18px; height: 18px;
  background: var(--bg2);
  border: 2px solid var(--accent2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.timeline-dot::after {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
}
.timeline-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: all 0.3s ease;
}
.timeline-card:hover {
  border-color: var(--accent2);
  box-shadow: 0 4px 20px rgba(124,58,237,0.1);
}
.timeline-card .company {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.4rem;
}
.timeline-card .role {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.3rem;
}
.timeline-card .period {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.timeline-card .desc {
  font-size: 0.875rem;
  color: var(--text-dim);
  line-height: 1.7;
}
.badge-current {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.3);
  color: var(--green);
  padding: 2px 10px;
  border-radius: 100px;
  margin-left: 8px;
  vertical-align: middle;
  letter-spacing: 0.05em;
}

@media (max-width: 500px) {
  .timeline::before { left: 16px; }
  .timeline-dot { left: 8px; }
  .timeline-item { padding-left: 50px; }
}

/* ===============================
   FOOTER
================================ */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 4rem 8% 2rem;
  position: relative;
  z-index: 1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-top: 1rem;
  max-width: 300px;
}
.footer h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
}
.footer-links a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }
.footer-contact p {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact p i { color: var(--accent3); font-size: 0.8rem; }
.footer-social {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}
.footer-social a {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.9rem;
  transition: all 0.2s;
}
.footer-social a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}
.footer-bottom span { color: var(--accent2); }

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-brand p { max-width: 100%; }
}

/* ===============================
   SCROLL TOP
================================ */
#scroll-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent2);
  color: #fff;
  border-radius: 10px;
  font-size: 1.1rem;
  z-index: 1000;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s ease;
  pointer-events: none;
  box-shadow: 0 4px 15px rgba(124,58,237,0.4);
}
#scroll-top.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}
#scroll-top:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(124,58,237,0.5); }

/* ===============================
   REVEAL ANIMATIONS
================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.4,0,0.2,1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }
.reveal-d4 { transition-delay: 0.4s; }

/* ===============================
   MOBILE PADDING
================================ */
@media (max-width: 500px) {
  section { padding: 80px 5%; }
  .footer { padding: 3rem 5% 1.5rem; }
}
#skillsContainer {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.skill-card {
  background: #111;
  padding: 15px;
  border-radius: 12px;
  text-align: center;
  transition: 0.3s;
}

.skill-card:hover {
  transform: translateY(-5px);
}

.skill-card img {
  width: 40px;
}

.skill-card p {
  margin-top: 10px;
  font-size: 14px;
}