/* ===== GOOGLE FONTS ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ===== CSS VARIABLES ===== */
:root {
  --bg-primary: #0d0f14;
  --bg-secondary: #13161e;
  --bg-card: #1a1d27;
  --bg-card-hover: #1f2330;
  --border: rgba(255,255,255,0.07);
  --accent: #6c63ff;
  --accent-2: #00d4aa;
  --accent-glow: rgba(108,99,255,0.25);
  --text-primary: #e8eaf0;
  --text-secondary: #8b90a7;
  --text-muted: #555a72;
  --nav-bg: rgba(13,15,20,0.85);
  --tag-bg: rgba(108,99,255,0.12);
  --tag-color: #9d97ff;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

[data-theme="light"] {
  --bg-primary: #f4f5f9;
  --bg-secondary: #eceef4;
  --bg-card: #ffffff;
  --bg-card-hover: #f8f9fd;
  --border: rgba(0,0,0,0.08);
  --accent: #5b52e8;
  --accent-2: #00b894;
  --accent-glow: rgba(91,82,232,0.15);
  --text-primary: #1a1d2e;
  --text-secondary: #4a4f6a;
  --text-muted: #9098b5;
  --nav-bg: rgba(244,245,249,0.9);
  --tag-bg: rgba(91,82,232,0.1);
  --tag-color: #5b52e8;
  --shadow: 0 8px 32px rgba(0,0,0,0.1);
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
ul { list-style: none; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 10px; }

/* ===== NOISE OVERLAY ===== */
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='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ===== NAVIGATION ===== */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--text-primary); background: var(--border); }

/* Theme Toggle */
#theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 38px; height: 38px;
  border-radius: 50%;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
}
#theme-toggle:hover { color: var(--accent); border-color: var(--accent); transform: rotate(20deg); }

/* Language Toggle */
.lang-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  height: 38px;
  padding: 0 12px;
  border-radius: 100px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  transition: all var(--transition);
  font-family: 'JetBrains Mono', monospace;
}
.lang-toggle:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-2px); }

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

/* Mobile Nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--border);
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
}
.mobile-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.mobile-nav a:hover { color: var(--text-primary); background: var(--border); }
.mobile-nav.open { display: flex; }

/* ===== MAIN LAYOUT ===== */
main { padding-top: 64px; }
section { padding: 96px 24px; max-width: 1100px; margin: 0 auto; }
.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: 48px;
  color: var(--text-primary);
}

/* ===== HERO ===== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  padding-bottom: 80px;
  position: relative;
}
.hero-bg-blob {
  position: absolute;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  animation: pulse-blob 6s ease-in-out infinite;
}
@keyframes pulse-blob {
  0%,100% { transform: translate(-50%,-50%) scale(1); opacity: 0.5; }
  50% { transform: translate(-50%,-50%) scale(1.1); opacity: 0.8; }
}
.hero-content { position: relative; z-index: 1; max-width: 800px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--tag-bg);
  border: 1px solid rgba(108,99,255,0.2);
  color: var(--tag-color);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease both;
}
.hero-badge::before { content: '●'; font-size: 0.6rem; color: var(--accent-2); animation: blink 1.5s infinite; }
@keyframes blink { 0%,100% { opacity:1; } 50% { opacity:0.2; } }
.hero-name {
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1.05;
  margin-bottom: 20px;
  animation: fadeInUp 0.6s 0.1s ease both;
}
.hero-name span {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-headline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 36px;
  font-weight: 400;
  animation: fadeInUp 0.6s 0.2s ease both;
}
.hero-contacts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
  animation: fadeInUp 0.6s 0.3s ease both;
}
.contact-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.8rem;
  padding: 7px 14px;
  border-radius: 100px;
  transition: all var(--transition);
}
.contact-chip:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.contact-chip svg { width: 14px; height: 14px; flex-shrink: 0; }
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  animation: fadeInUp 0.6s 0.4s ease both;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 24px var(--accent-glow);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 32px var(--accent-glow); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 100px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-3px); }

/* ===== ABOUT ===== */
#about { background: var(--bg-secondary); border-radius: 0; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 0.97rem;
}
.about-text p:last-child { margin-bottom: 0; }
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}
.stat-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow); }
.stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; }

/* ===== LANGUAGES ===== */
.lang-bar-wrap { margin-top: 20px; }
.lang-item { margin-bottom: 14px; }
.lang-header { display: flex; justify-content: space-between; font-size: 0.83rem; margin-bottom: 6px; color: var(--text-secondary); }
.lang-bar { height: 5px; background: var(--border); border-radius: 100px; overflow: hidden; }
.lang-fill { height: 100%; border-radius: 100px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width 1.2s cubic-bezier(0.4,0,0.2,1); width: 0; }

/* ===== PROJECTS ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity var(--transition);
}
.project-card:hover { border-color: rgba(108,99,255,0.3); transform: translateY(-6px); box-shadow: var(--shadow); }
.project-card:hover::before { opacity: 1; }
.project-icon {
  width: 48px; height: 48px;
  background: var(--tag-bg);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}
.project-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
  line-height: 1.3;
}
.project-desc {
  font-size: 0.87rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.7;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--tag-bg);
  color: var(--tag-color);
  letter-spacing: 0.3px;
}

/* ===== SKILLS FLAT ===== */
.skills-flat { display: flex; flex-direction: column; gap: 20px; }
.skill-row { display: flex; align-items: flex-start; gap: 20px; flex-wrap: wrap; padding: 16px 0; border-bottom: 1px solid var(--border); }
.skill-row:last-child { border-bottom: none; }
.skill-row-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
  min-width: 160px;
  padding-top: 4px;
}
.skill-row .skill-list { display: flex; flex-wrap: wrap; gap: 8px; flex: 1; }

/* ===== SKILLS (old grid kept for reference) ===== */

#skills { background: var(--bg-secondary); }
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.skill-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}
.skill-group:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow); }
.skill-group-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.skill-group-title::before {
  content: '';
  display: block;
  width: 18px; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 2px;
}
.skill-list { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-item {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 5px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', monospace;
  transition: all var(--transition);
}
.skill-item:hover { border-color: var(--accent-2); color: var(--accent-2); }

/* Certs */
.certs-section { margin-top: 48px; }
.certs-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.certs-list { display: flex; flex-wrap: wrap; gap: 10px; }
.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.8rem;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.cert-badge::before { content: '🏆'; font-size: 0.8rem; }
.cert-badge:hover { border-color: var(--accent-2); color: var(--text-primary); }

/* ===== EXPERIENCE ===== */
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 8px; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2), transparent);
  border-radius: 2px;
}
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -34px; top: 6px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent);
  transition: all var(--transition);
}
.timeline-item:hover::before { background: var(--accent); box-shadow: 0 0 12px var(--accent-glow); }
.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}
.timeline-card:hover { border-color: rgba(108,99,255,0.3); transform: translateX(4px); box-shadow: var(--shadow); }
.timeline-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; margin-bottom: 6px; }
.timeline-role { font-size: 1rem; font-weight: 700; color: var(--text-primary); }
.timeline-period {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  background: var(--tag-bg);
  color: var(--tag-color);
  white-space: nowrap;
}
.timeline-company {
  font-size: 0.85rem;
  color: var(--accent-2);
  font-weight: 600;
  margin-bottom: 12px;
}
.timeline-desc { font-size: 0.87rem; color: var(--text-secondary); line-height: 1.7; }

/* ===== EDUCATION ===== */
#education { background: var(--bg-secondary); }
.edu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.edu-card::after {
  content: '';
  position: absolute;
  bottom: 0; right: 0;
  width: 120px; height: 120px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.edu-card:hover { border-color: rgba(108,99,255,0.3); transform: translateY(-4px); box-shadow: var(--shadow); }
.edu-degree { font-size: 1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
.edu-school { font-size: 0.9rem; color: var(--accent); font-weight: 600; margin-bottom: 4px; }
.edu-period { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 14px; }
.edu-desc { font-size: 0.85rem; color: var(--text-secondary); }

/* ===== FOOTER ===== */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
}
.footer-inner { max-width: 1100px; margin: 0 auto; }
.footer-name {
  font-size: 1.1rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}
.footer-text { font-size: 0.82rem; color: var(--text-muted); }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== ACCORDION ===== */
.accordion { display: flex; flex-direction: column; gap: 12px; }
.acc-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.acc-item.open { border-color: rgba(108,99,255,0.35); box-shadow: var(--shadow); }
.acc-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  text-align: left;
  transition: background var(--transition);
}
.acc-header:hover { background: var(--bg-card-hover); }
.acc-header-left { display: flex; align-items: center; gap: 14px; }
.acc-icon { font-size: 1.4rem; flex-shrink: 0; }
.acc-title { font-size: 1rem; font-weight: 700; line-height: 1.3; }
.acc-chevron {
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1), color var(--transition);
}
.acc-item.open .acc-chevron { transform: rotate(180deg); color: var(--accent); }
.acc-body {
  padding: 0 28px 24px;
  animation: fadeInDown 0.3s ease;
}
.acc-always {
  padding: 0 28px 16px;
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.acc-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; margin-bottom: 20px; }
.acc-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: 100px;
  transition: all var(--transition);
}
.acc-link--purple {
  color: var(--accent);
  border: 1px solid rgba(108,99,255,0.3);
}
.acc-link--purple:hover { background: var(--tag-bg); transform: translateY(-2px); }
.acc-link--teal {
  color: var(--accent-2);
  border: 1px solid rgba(0,212,170,0.3);
}
.acc-link--teal:hover { background: rgba(0,212,170,0.1); transform: translateY(-2px); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  section { padding: 72px 20px; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .about-grid { grid-template-columns: 1fr; }
  .edu-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .hero-name { letter-spacing: -1px; }
}
@media (max-width: 480px) {
  .about-stats { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
}