/* ===== CSS Variables & Reset ===== */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #22223a;
  --accent: #7c3aed;
  --accent-light: #a78bfa;
  --accent-glow: rgba(124, 58, 237, 0.3);
  --cyan: #06b6d4;
  --cyan-glow: rgba(6, 182, 212, 0.3);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --gradient-1: linear-gradient(135deg, #7c3aed, #06b6d4);
  --gradient-2: linear-gradient(135deg, #7c3aed, #ec4899);
  --border-color: rgba(148, 163, 184, 0.1);
  --nav-height: 70px;
  --radius: 16px;
  --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; scroll-padding-top: var(--nav-height); }

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

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Particles Canvas ===== */
#particles-canvas {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; height: var(--nav-height);
  z-index: 1000; transition: var(--transition);
  background: transparent;
}
.navbar.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}
.nav-container {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; height: 100%;
}
.nav-logo {
  font-size: 1.5rem; font-weight: 800; letter-spacing: -1px;
  color: var(--text-primary);
}
.logo-bracket { color: var(--accent); }
.nav-links { display: flex; gap: 32px; }
.nav-link {
  font-size: 0.9rem; font-weight: 500; color: var(--text-secondary);
  position: relative; transition: var(--transition); padding: 4px 0;
}
.nav-link::after {
  content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
  background: var(--gradient-1); transition: var(--transition); border-radius: 2px;
}
.nav-link:hover, .nav-link.active { color: var(--text-primary); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.hamburger, .hamburger::before, .hamburger::after {
  display: block; width: 24px; height: 2px; background: var(--text-primary);
  transition: var(--transition); position: relative;
}
.hamburger::before, .hamburger::after { content: ''; position: absolute; left: 0; }
.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }
.nav-toggle.active .hamburger { background: transparent; }
.nav-toggle.active .hamburger::before { top: 0; transform: rotate(45deg); }
.nav-toggle.active .hamburger::after { top: 0; transform: rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  position: relative; z-index: 1; padding: 120px 24px 80px;
  max-width: 1200px; margin: 0 auto; gap: 60px;
}
.hero-content { flex: 1; max-width: 600px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 18px; border-radius: 50px;
  background: rgba(124, 58, 237, 0.1); border: 1px solid rgba(124, 58, 237, 0.3);
  font-size: 0.85rem; color: var(--accent-light); margin-bottom: 28px;
  animation: fadeInUp 0.8s ease;
}
.badge-dot {
  width: 8px; height: 8px; border-radius: 50%; background: #22c55e;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}
.hero-name { margin-bottom: 16px; animation: fadeInUp 0.8s ease 0.1s both; }
.greeting {
  display: block; font-size: 1.1rem; font-weight: 400; color: var(--accent-light);
  margin-bottom: 8px; letter-spacing: 2px; text-transform: uppercase;
}
.name-text {
  font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 900;
  background: var(--gradient-1); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1.1;
}
.hero-title {
  font-size: 1.3rem; color: var(--text-secondary); margin-bottom: 20px;
  font-family: 'JetBrains Mono', monospace; animation: fadeInUp 0.8s ease 0.2s both;
  display: flex; align-items: center;
}
.cursor {
  animation: blink 1s step-end infinite; color: var(--accent); margin-left: 2px;
}
@keyframes blink { 50% { opacity: 0; } }
.hero-intro {
  font-size: 1.05rem; color: var(--text-secondary); line-height: 1.8;
  margin-bottom: 32px; animation: fadeInUp 0.8s ease 0.3s both;
}
.hero-cta {
  display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 36px;
  animation: fadeInUp 0.8s ease 0.4s both;
}
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 12px; font-size: 0.95rem;
  font-weight: 600; cursor: pointer; transition: var(--transition);
  border: none; font-family: 'Inter', sans-serif;
}
.btn-primary {
  background: var(--gradient-1); color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px var(--accent-glow); }
.btn-secondary {
  background: var(--bg-card); color: var(--text-primary);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover { background: var(--bg-card-hover); border-color: var(--accent); transform: translateY(-2px); }
.btn-outline {
  background: transparent; color: var(--accent-light);
  border: 1px solid var(--accent);
}
.btn-outline:hover { background: rgba(124, 58, 237, 0.1); transform: translateY(-2px); }
.hero-socials {
  display: flex; gap: 16px; animation: fadeInUp 0.8s ease 0.5s both;
}
.social-link {
  width: 42px; height: 42px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-card); border: 1px solid var(--border-color);
  color: var(--text-secondary); font-size: 1.1rem; transition: var(--transition);
}
.social-link:hover {
  color: var(--accent-light); border-color: var(--accent);
  transform: translateY(-3px); box-shadow: 0 4px 15px var(--accent-glow);
}
.hero-visual { flex: 1; max-width: 480px; animation: fadeInUp 0.8s ease 0.3s both; }
.code-window {
  background: var(--bg-secondary); border-radius: var(--radius);
  border: 1px solid var(--border-color); overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.code-header {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 18px; background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border-color);
}
.code-dot { width: 12px; height: 12px; border-radius: 50%; }
.code-dot.red { background: #ef4444; }
.code-dot.yellow { background: #eab308; }
.code-dot.green { background: #22c55e; }
.code-filename {
  margin-left: auto; font-size: 0.8rem; color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}
.code-body {
  padding: 20px; font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem; line-height: 1.8; overflow-x: auto;
}
.code-keyword { color: #c084fc; }
.code-variable { color: #67e8f9; }
.code-property { color: #7dd3fc; }
.code-string { color: #86efac; }
.code-number { color: #fbbf24; }
.code-method { color: #fca5a5; }
.scroll-indicator {
  position: absolute; bottom: 30px; left: 50%;
  transform: translateX(-50%); display: flex; flex-direction: column;
  align-items: center; gap: 8px; color: var(--text-muted);
  font-size: 0.8rem; animation: float 3s ease-in-out infinite;
}
.mouse {
  width: 24px; height: 38px; border: 2px solid var(--text-muted);
  border-radius: 12px; position: relative;
}
.wheel {
  width: 3px; height: 8px; background: var(--accent-light);
  border-radius: 3px; position: absolute; top: 6px; left: 50%;
  transform: translateX(-50%); animation: scroll-wheel 2s infinite;
}
@keyframes scroll-wheel { 0% { opacity: 1; top: 6px; } 100% { opacity: 0; top: 20px; } }
@keyframes float { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(-10px); } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Section Common ===== */
.section { padding: 100px 0; position: relative; z-index: 1; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
  font-family: 'JetBrains Mono', monospace; font-size: 0.9rem;
  color: var(--accent-light); display: block; margin-bottom: 12px;
}
.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800;
  margin-bottom: 16px;
}
.section-line {
  width: 60px; height: 4px; background: var(--gradient-1);
  margin: 0 auto; border-radius: 4px;
}
.section-subtitle {
  color: var(--text-secondary); font-size: 1.05rem; margin-top: 16px;
  max-width: 500px; margin-left: auto; margin-right: auto;
}

/* ===== About ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 60px; align-items: center; }
.about-image { position: relative; width: 280px; height: 320px; margin: 0 auto; }
.image-placeholder {
  width: 100%; height: 100%; border-radius: var(--radius);
  background: var(--gradient-1); display: flex; align-items: center;
  justify-content: center; font-size: 5rem; color: rgba(255,255,255,0.3);
}
.image-border {
  position: absolute; top: 16px; left: 16px; width: 100%; height: 100%;
  border: 2px solid var(--accent); border-radius: var(--radius); z-index: -1;
}
.experience-badge {
  position: absolute; bottom: -20px; right: -20px;
  background: var(--bg-card); padding: 16px; border-radius: var(--radius);
  border: 1px solid var(--accent); display: flex; align-items: center; gap: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}
.exp-number {
  font-size: 2rem; font-weight: 900;
  background: var(--gradient-1); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.exp-text { font-size: 0.8rem; color: var(--text-secondary); line-height: 1.3; }
.about-text { color: var(--text-secondary); margin-bottom: 18px; font-size: 1.02rem; }
.highlight { color: var(--accent-light); font-weight: 600; }
.about-info-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 28px;
}
.info-item {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px; background: var(--bg-card); border-radius: 12px;
  border: 1px solid var(--border-color); font-size: 0.9rem; color: var(--text-secondary);
}
.info-item i { color: var(--accent-light); font-size: 1rem; }

/* ===== Skills ===== */
.skills { background: var(--bg-secondary); }
.skills-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.skill-category {
  background: var(--bg-card); border-radius: var(--radius); padding: 32px;
  border: 1px solid var(--border-color); transition: var(--transition);
}
.skill-category:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: 0 10px 40px rgba(0,0,0,0.3); }
.category-header { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
.category-icon {
  width: 48px; height: 48px; border-radius: 12px; background: var(--gradient-1);
  display: flex; align-items: center; justify-content: center; font-size: 1.2rem; color: #fff;
}
.category-header h3 { font-size: 1.2rem; font-weight: 700; }
.skill-items { display: flex; flex-wrap: wrap; gap: 10px; }
.skill-item {
  display: flex; align-items: center; gap: 8px; padding: 8px 16px;
  background: rgba(124, 58, 237, 0.08); border-radius: 8px;
  border: 1px solid rgba(124, 58, 237, 0.15); font-size: 0.88rem;
  color: var(--text-secondary); transition: var(--transition);
}
.skill-item:hover { background: rgba(124, 58, 237, 0.15); color: var(--text-primary); border-color: var(--accent); }
.skill-item i { color: var(--accent-light); font-size: 1rem; }
.skill-icon-text {
  font-weight: 700; font-size: 0.75rem; color: var(--accent-light);
  font-family: 'JetBrains Mono', monospace;
}

/* ===== Experience / Timeline ===== */
.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline::before {
  content: ''; position: absolute; left: 50%; top: 0; bottom: 0;
  width: 2px; background: var(--border-color); transform: translateX(-50%);
}
.timeline-item {
  display: flex; margin-bottom: 48px; position: relative;
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.timeline-item.visible { opacity: 1; transform: translateY(0); }
.timeline-marker {
  position: absolute; left: 50%; transform: translateX(-50%); z-index: 2;
}
.marker-dot {
  width: 16px; height: 16px; border-radius: 50%; background: var(--accent);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 20px var(--accent-glow);
}
.timeline-content {
  width: 45%; padding: 28px; background: var(--bg-card);
  border-radius: var(--radius); border: 1px solid var(--border-color);
  transition: var(--transition);
}
.timeline-content:hover { border-color: var(--accent); transform: translateY(-3px); }
.timeline-item:nth-child(odd) .timeline-content { margin-right: auto; }
.timeline-item:nth-child(even) .timeline-content { margin-left: auto; }
.timeline-date {
  display: flex; align-items: center; gap: 8px; font-size: 0.85rem;
  color: var(--accent-light); margin-bottom: 10px;
  font-family: 'JetBrains Mono', monospace;
}
.timeline-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 6px; }
.timeline-company {
  display: flex; align-items: center; gap: 6px; font-size: 0.95rem;
  color: var(--text-secondary); margin-bottom: 16px;
}
.timeline-details { margin-bottom: 16px; }
.timeline-details li {
  color: var(--text-secondary); font-size: 0.9rem; padding-left: 18px;
  position: relative; margin-bottom: 6px;
}
.timeline-details li::before {
  content: '▹'; position: absolute; left: 0; color: var(--accent-light);
}
.timeline-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 4px 12px; border-radius: 6px; font-size: 0.78rem; font-weight: 500;
  background: rgba(6, 182, 212, 0.1); color: var(--cyan); border: 1px solid rgba(6, 182, 212, 0.2);
}

/* ===== Projects ===== */
.projects { background: var(--bg-secondary); }
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.project-card {
  background: var(--bg-card); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border-color); transition: var(--transition);
  opacity: 0; transform: translateY(30px);
}
.project-card.visible { opacity: 1; transform: translateY(0); }
.project-card:hover { transform: translateY(-8px); border-color: var(--accent); box-shadow: 0 20px 60px rgba(0,0,0,0.4); }
.project-image {
  height: 200px; position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--bg-card-hover), var(--bg-primary));
  display: flex; align-items: center; justify-content: center;
}
.project-icon-bg { font-size: 4rem; color: rgba(124, 58, 237, 0.2); transition: var(--transition); }
.project-card:hover .project-icon-bg { transform: scale(1.2); color: rgba(124, 58, 237, 0.35); }
.project-overlay {
  position: absolute; inset: 0; background: rgba(10, 10, 15, 0.85);
  display: flex; align-items: center; justify-content: center; gap: 16px;
  opacity: 0; transition: var(--transition);
}
.project-card:hover .project-overlay { opacity: 1; }
.project-link {
  width: 48px; height: 48px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent); color: #fff; font-size: 1.1rem;
  transition: var(--transition); transform: translateY(20px);
}
.project-card:hover .project-link { transform: translateY(0); }
.project-link:hover { background: var(--accent-light); }
.project-info { padding: 24px; }
.project-number {
  font-family: 'JetBrains Mono', monospace; font-size: 2rem;
  font-weight: 800; color: rgba(124, 58, 237, 0.2); margin-bottom: 4px;
}
.project-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.project-desc { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.6; }
.project-tech { display: flex; flex-wrap: wrap; gap: 8px; }
.project-tech span {
  padding: 4px 12px; border-radius: 6px; font-size: 0.78rem;
  background: rgba(124, 58, 237, 0.1); color: var(--accent-light);
  border: 1px solid rgba(124, 58, 237, 0.2);
}

/* ===== Education ===== */
.education-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 32px; }
.education-card {
  display: flex; align-items: center; gap: 24px; padding: 32px;
  background: var(--bg-card); border-radius: var(--radius);
  border: 1px solid var(--border-color); transition: var(--transition);
}
.education-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.edu-icon {
  width: 64px; height: 64px; border-radius: 16px; background: var(--gradient-1);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; color: #fff; flex-shrink: 0;
}
.edu-content h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 6px; }
.edu-place { color: var(--accent-light); font-size: 0.95rem; margin-bottom: 4px; }
.edu-year { color: var(--text-muted); font-size: 0.85rem; display: flex; align-items: center; gap: 6px; }
.certifications-wrapper {
  background: var(--bg-card); border-radius: var(--radius); padding: 32px;
  border: 1px solid var(--border-color);
}
.cert-title {
  font-size: 1.15rem; font-weight: 700; margin-bottom: 24px;
  display: flex; align-items: center; gap: 10px;
}
.cert-title i { color: var(--accent-light); }
.cert-list { display: flex; flex-direction: column; gap: 16px; }
.cert-item {
  display: flex; align-items: center; gap: 14px; padding: 14px 18px;
  background: rgba(124, 58, 237, 0.06); border-radius: 12px;
  border: 1px solid rgba(124, 58, 237, 0.12); transition: var(--transition);
}
.cert-item:hover { border-color: var(--accent); background: rgba(124, 58, 237, 0.12); }
.cert-badge {
  width: 40px; height: 40px; border-radius: 10px; background: var(--gradient-1);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1rem; flex-shrink: 0;
}
.cert-item span { font-size: 0.95rem; color: var(--text-secondary); }

/* ===== Testimonials ===== */
.testimonials { background: var(--bg-secondary); }
.testimonials-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; max-width: 900px; margin: 0 auto; }
.testimonial-card {
  background: var(--bg-card); border-radius: var(--radius); padding: 36px;
  border: 1px solid var(--border-color); transition: var(--transition); position: relative;
}
.testimonial-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.quote-icon { font-size: 2rem; color: var(--accent); opacity: 0.3; margin-bottom: 16px; }
.testimonial-text { font-size: 1rem; color: var(--text-secondary); line-height: 1.8; margin-bottom: 24px; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 14px; }
.author-avatar {
  width: 48px; height: 48px; border-radius: 50%; background: var(--gradient-1);
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.1rem;
}
.author-info h4 { font-size: 0.95rem; font-weight: 600; }
.author-info span { font-size: 0.85rem; color: var(--text-muted); }

/* ===== Stats ===== */
.stats { background: var(--bg-primary); padding: 80px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.stat-card {
  text-align: center; padding: 36px 24px; background: var(--bg-card);
  border-radius: var(--radius); border: 1px solid var(--border-color);
  transition: var(--transition); position: relative; overflow: hidden;
}
.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient-1); opacity: 0; transition: var(--transition);
}
.stat-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.stat-card:hover::before { opacity: 1; }
.stat-icon { font-size: 1.8rem; color: var(--accent-light); margin-bottom: 16px; }
.stat-number {
  font-size: 2.8rem; font-weight: 900; display: inline;
  background: var(--gradient-1); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-suffix {
  font-size: 1.5rem; font-weight: 700; display: inline;
  background: var(--gradient-1); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-label { color: var(--text-secondary); font-size: 0.9rem; margin-top: 8px; }

/* ===== Contact ===== */
.contact { background: var(--bg-secondary); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; max-width: 950px; margin: 0 auto; }
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-card {
  display: flex; align-items: center; gap: 18px; padding: 24px;
  background: var(--bg-card); border-radius: var(--radius);
  border: 1px solid var(--border-color); transition: var(--transition);
}
.contact-card:hover { border-color: var(--accent); }
.contact-icon {
  width: 52px; height: 52px; border-radius: 14px; background: var(--gradient-1);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: #fff; flex-shrink: 0;
}
.contact-card h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
.contact-card a, .contact-card p { color: var(--text-secondary); font-size: 0.9rem; }
.contact-card a:hover { color: var(--accent-light); }
.contact-socials { display: flex; gap: 12px; margin-top: 4px; }
.contact-socials a {
  width: 36px; height: 36px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(124, 58, 237, 0.1); color: var(--accent-light);
  border: 1px solid rgba(124, 58, 237, 0.2); transition: var(--transition);
}
.contact-socials a:hover { background: var(--accent); color: #fff; }
.contact-form { display: flex; flex-direction: column; gap: 24px; }
.form-group { position: relative; }
.form-group input, .form-group textarea {
  width: 100%; padding: 16px 18px; background: var(--bg-card);
  border: 1px solid var(--border-color); border-radius: 12px;
  color: var(--text-primary); font-size: 0.95rem; font-family: 'Inter', sans-serif;
  transition: var(--transition); outline: none;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--accent); box-shadow: 0 0 20px var(--accent-glow); }
.form-group label {
  position: absolute; left: 18px; top: 16px; color: var(--text-muted);
  font-size: 0.95rem; transition: var(--transition); pointer-events: none;
  background: transparent;
}
.form-group input:focus ~ label, .form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label, .form-group textarea:not(:placeholder-shown) ~ label {
  top: -10px; left: 14px; font-size: 0.78rem; color: var(--accent-light);
  background: var(--bg-secondary); padding: 0 6px;
}
.form-group textarea { resize: vertical; min-height: 120px; }
.btn-submit { width: 100%; justify-content: center; padding: 16px; font-size: 1rem; }

/* ===== Footer ===== */
.footer { background: var(--bg-primary); padding: 60px 0 30px; border-top: 1px solid var(--border-color); position: relative; z-index: 1; }
.footer-content { text-align: center; }
.footer-logo { font-size: 1.8rem; font-weight: 800; display: inline-block; margin-bottom: 16px; }
.footer-quote {
  font-style: italic; color: var(--text-secondary); font-size: 1.05rem;
  margin-bottom: 24px; max-width: 400px; margin-left: auto; margin-right: auto;
}
.footer-links { display: flex; justify-content: center; gap: 28px; margin-bottom: 24px; }
.footer-links a { color: var(--text-muted); font-size: 0.9rem; transition: var(--transition); }
.footer-links a:hover { color: var(--accent-light); }
.footer-socials { display: flex; justify-content: center; gap: 14px; margin-bottom: 28px; }
.footer-socials a {
  width: 40px; height: 40px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-card); border: 1px solid var(--border-color);
  color: var(--text-secondary); transition: var(--transition);
}
.footer-socials a:hover { color: var(--accent-light); border-color: var(--accent); transform: translateY(-3px); }
.footer-divider { width: 100%; height: 1px; background: var(--border-color); margin-bottom: 24px; }
.footer-copyright { color: var(--text-muted); font-size: 0.85rem; }
.heart { color: #ef4444; animation: heartbeat 1.5s infinite; display: inline-block; }
@keyframes heartbeat { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.2); } }

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed; bottom: 30px; right: 30px; width: 48px; height: 48px;
  border-radius: 14px; background: var(--gradient-1); border: none;
  color: #fff; font-size: 1.1rem; cursor: pointer; z-index: 999;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(20px);
  transition: var(--transition); box-shadow: 0 4px 20px var(--accent-glow);
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 8px 30px var(--accent-glow); }

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .hero { flex-direction: column; text-align: center; padding-top: 120px; }
  .hero-content { max-width: 100%; }
  .hero-cta { justify-content: center; }
  .hero-socials { justify-content: center; }
  .hero-visual { max-width: 400px; width: 100%; }
  .about-grid { grid-template-columns: 1fr; }
  .about-image-wrapper { display: flex; justify-content: center; }
  .skills-grid { grid-template-columns: 1fr; }
  .timeline::before { left: 20px; }
  .timeline-marker { left: 20px; }
  .timeline-content { width: calc(100% - 60px); margin-left: auto !important; }
  .projects-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: var(--nav-height); left: 0; width: 100%; 
    background: rgba(10, 10, 15, 0.95); backdrop-filter: blur(20px);
    flex-direction: column; align-items: center; gap: 0; padding: 20px 0;
    transform: translateY(-100%); opacity: 0; pointer-events: none;
    transition: var(--transition); border-bottom: 1px solid var(--border-color);
  }
  .nav-links.active { transform: translateY(0); opacity: 1; pointer-events: all; }
  .nav-link { padding: 14px 0; }
  .nav-toggle { display: block; }
  .projects-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 1.1rem; justify-content: center; }
  .about-info-grid { grid-template-columns: 1fr; }
  .education-card { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .hero-cta { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .footer-links { flex-wrap: wrap; gap: 16px; }
}