/* ============================
   VARIABLES & RESET
============================ */
:root {
  --bg: #0d0d12;
  --surface: #14141f;
  --surface2: #1c1c2e;
  --glass: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --accent: #7c3aed;
  --accent-light: #9f5cf7;
  --accent-glow: rgba(124, 58, 237, 0.25);
  --text: #e2e2f0;
  --text-muted: #8888aa;
  --text-dim: #55556a;
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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;
}

/* ============================
   BACKGROUND BLOBS
============================ */
.bg-blobs {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.18;
}

.blob-1 {
  width: 600px;
  height: 600px;
  background: #7c3aed;
  top: -150px;
  right: -100px;
}

.blob-2 {
  width: 400px;
  height: 400px;
  background: #2563eb;
  bottom: 10%;
  left: -100px;
}

.blob-3 {
  width: 350px;
  height: 350px;
  background: #7c3aed;
  bottom: 30%;
  right: 15%;
}

/* ============================
   UTILITY
============================ */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  position: relative;
  z-index: 1;
  padding: 96px 0;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 12px;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 2px;
  background: var(--accent);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.2;
}

.section-title span {
  background: linear-gradient(135deg, #7c3aed, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  color: var(--text-muted);
  max-width: 540px;
  margin-bottom: 56px;
  font-size: 1rem;
}

/* ============================
   SCROLL ANIMATIONS
============================ */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--transition), transform 0.7s var(--transition);
}

.fade-up.visible {
  opacity: 1;
  transform: none;
}

/* ============================
   NAVIGATION
============================ */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}

nav.scrolled {
  background: rgba(13, 13, 18, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--glass-border);
}

.nav-inner {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.3rem;
  font-weight: 900;
  text-decoration: none;
  background: linear-gradient(135deg, #fff 30%, var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
  background: var(--glass);
}

.btn-cv {
  text-decoration: none;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff !important;
  font-size: 0.875rem;
  font-weight: 600;
  transition: background var(--transition), box-shadow var(--transition) !important;
}

.btn-cv:hover {
  background: var(--accent-light) !important;
  box-shadow: 0 0 20px var(--accent-glow);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  border: none;
  background: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: rgba(13, 13, 18, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 99;
  padding: 20px 24px;
  flex-direction: column;
  gap: 4px;
  transform: translateY(-10px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
}

.mobile-menu.open {
  opacity: 1;
  transform: none;
  pointer-events: all;
}

.mobile-menu a {
  display: block;
  text-decoration: none;
  color: var(--text);
  font-size: 1rem;
  font-weight: 500;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}

.mobile-menu a:hover { background: var(--glass); }

.mobile-cv {
  margin-top: 12px;
  display: inline-block;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff !important;
  font-weight: 600;
  text-align: center;
}

/* ============================
   HERO
============================ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 68px;
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  width: 100%;
}

.hero-text {
  flex: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.8rem;
  color: var(--accent-light);
  font-weight: 600;
  margin-bottom: 28px;
  letter-spacing: 0.03em;
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 6px #22c55e;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-name {
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  color: #fff;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.hero-title {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--accent-light);
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  padding: 14px 28px;
  background: var(--accent);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}

.btn-primary:hover {
  background: var(--accent-light);
  box-shadow: 0 0 28px var(--accent-glow);
  transform: translateY(-2px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  padding: 13px 26px;
  border: 1.5px solid var(--glass-border);
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.btn-outline:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-2px);
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 36px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}

.social-link:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-3px);
}

.social-link svg {
  width: 18px;
  height: 18px;
}

/* Hero photo */
.hero-photo-wrap {
  flex-shrink: 0;
  position: relative;
}

.hero-photo-ring {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  padding: 4px;
  background: linear-gradient(135deg, var(--accent), #2563eb, var(--accent-light));
  animation: rotate-ring 8s linear infinite;
}

@keyframes rotate-ring {
  to { transform: rotate(360deg); }
}

.hero-photo-inner {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  background: var(--surface2);
  animation: rotate-ring 8s linear infinite reverse;
}

.hero-photo-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
}

/* ============================
   ABOUT / SKILLS
============================ */
#about {
  background: var(--surface);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.about-bio p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 1rem;
}

.about-bio p strong {
  color: var(--text);
}

.skills-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
  margin-top: 32px;
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  cursor: default;
}

.skill-tag:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: #fff;
}

/* ============================
   EXPERIENCE
============================ */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  border-radius: 2px;
}

.timeline-card {
  position: relative;
  padding: 24px 24px 24px 68px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.timeline-card:hover {
  background: rgba(124, 58, 237, 0.07);
  border-color: rgba(124, 58, 237, 0.25);
  transform: translateX(4px);
}

.timeline-dot {
  position: absolute;
  left: 17px;
  top: 30px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  box-shadow: 0 0 10px var(--accent-glow);
}

.timeline-company {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.timeline-role {
  font-size: 0.85rem;
  color: var(--accent-light);
  font-weight: 600;
  margin-bottom: 12px;
}

.timeline-list {
  list-style: none;
  margin-bottom: 12px;
}

.timeline-list li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
  margin-bottom: 4px;
}

.timeline-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
  top: 2px;
}

.timeline-tech {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-style: italic;
}

/* ============================
   EDUCATION
============================ */
#education {
  background: var(--surface);
}

.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.edu-card {
  padding: 24px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.edu-card:hover {
  background: rgba(124, 58, 237, 0.07);
  border-color: rgba(124, 58, 237, 0.25);
  transform: translateY(-4px);
}

.edu-institution {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.edu-period {
  font-size: 0.78rem;
  color: var(--accent-light);
  font-weight: 600;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.edu-degree {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ============================
   PROJECTS
============================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.project-card:hover {
  background: rgba(124, 58, 237, 0.08);
  border-color: rgba(124, 58, 237, 0.3);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 30px var(--accent-glow);
}

.project-header {
  padding: 24px 24px 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.project-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.project-arrow {
  color: var(--text-dim);
  transition: color var(--transition), transform var(--transition);
}

.project-card:hover .project-arrow {
  color: var(--accent-light);
  transform: translate(3px, -3px);
}

.project-arrow svg {
  width: 20px;
  height: 20px;
}

.project-body {
  padding: 16px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 20px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-tag {
  padding: 4px 10px;
  background: rgba(124, 58, 237, 0.15);
  border: 1px solid rgba(124, 58, 237, 0.25);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--accent-light);
  font-weight: 600;
}

/* ============================
   FOOTER
============================ */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--glass-border);
  padding: 36px 24px;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-socials {
  display: flex;
  gap: 10px;
}

/* ============================
   RESPONSIVE
============================ */
@media (max-width: 900px) {
  .hero-inner {
    flex-direction: column-reverse;
    text-align: center;
  }

  .hero-desc { max-width: 100%; }

  .hero-actions { justify-content: center; }

  .hero-socials { justify-content: center; }

  .hero-photo-ring {
    width: 220px;
    height: 220px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .timeline::before { display: none; }

  .timeline-card {
    padding-left: 24px;
  }

  .timeline-dot { display: none; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu { display: flex; }
  .section { padding: 72px 0; }
  .projects-grid { grid-template-columns: 1fr; }
}