:root {
  --primary-blue: #1a73e8;
  --light-blue: #4fc3f7;
  --pale-blue: #e3f2fd;
  --pale-blue-2: #f0f8ff;
  --white: #ffffff;
  --dark-text: #1e293b;
  --muted-text: #64748b;
  --border-color: #dbeafe;
  --gradient-primary: linear-gradient(135deg, #1a73e8 0%, #0ea5e9 100%);
  --gradient-hero: linear-gradient(135deg, #0d47a1 0%, #1565c0 40%, #1976d2 70%, #0288d1 100%);
  --shadow-card: 0 4px 20px rgba(26, 115, 232, 0.10);
  --shadow-hover: 0 8px 32px rgba(26, 115, 232, 0.20);
  --transition: all 0.3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Poppins', sans-serif; color: var(--dark-text); background: var(--white); overflow-x: hidden; line-height: 1.7; }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--pale-blue); }
::-webkit-scrollbar-thumb { background: var(--primary-blue); border-radius: 3px; }

/* ── NAVBAR ── */
#mainNavbar {
  background: rgba(255,255,255,0.96) !important;
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--border-color);
  box-shadow: 0 2px 16px rgba(26,115,232,0.08);
  transition: var(--transition);
  padding: 0.8rem 0;
}
#mainNavbar .navbar-brand {
  font-family: 'Fira Code', monospace;
  font-size: 1.5rem; font-weight: 700;
  color: var(--primary-blue) !important;
  letter-spacing: 1px;
}
.brand-bracket { color: var(--light-blue); font-weight: 900; }

#mainNavbar .nav-link {
  color: var(--dark-text) !important;
  font-weight: 500; font-size: 0.92rem;
  padding: 0.5rem 1rem !important;
  position: relative; transition: var(--transition);
}
#mainNavbar .nav-link::after {
  content: ''; position: absolute;
  bottom: 0; left: 50%; transform: translateX(-50%);
  width: 0; height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px; transition: width 0.3s ease;
}
#mainNavbar .nav-link:hover,
#mainNavbar .nav-link.active { color: var(--primary-blue) !important; }
#mainNavbar .nav-link:hover::after,
#mainNavbar .nav-link.active::after { width: 60%; }

/* ── BUTTONS ── */
.btn-primary-custom {
  background: var(--gradient-primary); color: var(--white);
  border: none; border-radius: 8px; padding: 0.65rem 1.5rem;
  font-weight: 600; font-size: 0.9rem; transition: var(--transition);
  box-shadow: 0 4px 14px rgba(26,115,232,0.3);
}
.btn-primary-custom:hover {
  transform: translateY(-2px); box-shadow: 0 6px 20px rgba(26,115,232,0.45);
  color: var(--white); text-decoration: none;
}
.btn-outline-custom {
  background: transparent; color: var(--primary-blue);
  border: 2px solid var(--primary-blue); border-radius: 8px;
  padding: 0.65rem 1.5rem; font-weight: 600; font-size: 0.9rem; transition: var(--transition);
}
.btn-outline-custom:hover {
  background: var(--primary-blue); color: var(--white);
  transform: translateY(-2px); text-decoration: none;
}

/* ── HERO ── */
.hero-section {
  min-height: 100vh; background: var(--gradient-hero);
  position: relative; overflow: hidden;
  padding-top: 80px; display: flex; align-items: center;
}
.hero-particles { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.hero-greeting { color: var(--light-blue); font-size: 1.15rem; font-weight: 500; letter-spacing: 2px; text-transform: uppercase; }
.hero-name { color: var(--white); font-size: clamp(2.4rem, 7vw, 4.5rem); font-weight: 800; line-height: 1.1; letter-spacing: -1px; }
.typewriter-wrap { font-size: clamp(1.1rem, 3vw, 1.6rem); color: rgba(255,255,255,0.85); }
.typing-label { color: rgba(255,255,255,0.7); }
#typingText { color: var(--light-blue); font-weight: 600; }
.cursor-blink { color: var(--light-blue); animation: blink 0.75s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero-desc { color: rgba(255,255,255,0.82); font-size: 1.05rem; max-width: 640px; line-height: 1.8; }
.hero-desc strong { color: var(--white); }

.btn-hero-primary {
  background: var(--white); color: var(--primary-blue);
  border: none; border-radius: 50px; padding: 0.8rem 2rem;
  font-weight: 700; font-size: 0.95rem; transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.btn-hero-primary:hover {
  background: var(--pale-blue); transform: translateY(-3px);
  color: var(--primary-blue); text-decoration: none;
}
.btn-hero-outline {
  background: transparent; color: var(--white);
  border: 2px solid rgba(255,255,255,0.6); border-radius: 50px;
  padding: 0.8rem 2rem; font-weight: 600; font-size: 0.95rem; transition: var(--transition);
}
.btn-hero-outline:hover {
  background: rgba(255,255,255,0.15); border-color: var(--white);
  transform: translateY(-3px); color: var(--white); text-decoration: none;
}
.social-btn {
  width: 46px; height: 46px; background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3); border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--white); font-size: 1rem; text-decoration: none;
  transition: var(--transition); margin: 0 0.3rem;
}
.social-btn:hover { background: var(--white); color: var(--primary-blue); transform: translateY(-4px); }

.scroll-indicator { animation: bounceDown 1.5s infinite; }
.scroll-indicator a { color: rgba(255,255,255,0.6); font-size: 1.5rem; text-decoration: none; }
.scroll-indicator a:hover { color: var(--white); }
@keyframes bounceDown { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(10px); } }

.particle-dot {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,0.3);
  animation: floatDot linear infinite;
}
@keyframes floatDot {
  0% { transform: translateY(0) translateX(0); opacity: 0.7; }
  50% { opacity: 0.3; }
  100% { transform: translateY(-100vh) translateX(30px); opacity: 0; }
}

/* ── SECTIONS ── */
.section-pad { padding: 90px 0; }
.bg-light-custom { background: var(--pale-blue-2); }
.section-tag {
  display: inline-block; color: var(--primary-blue);
  font-size: 0.8rem; font-weight: 700; letter-spacing: 3px;
  text-transform: uppercase; background: var(--pale-blue);
  padding: 0.3rem 1rem; border-radius: 30px; margin-bottom: 0.8rem;
}
.section-tag-white { background: rgba(255,255,255,0.2); color: var(--white); }
.section-title { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; color: var(--dark-text); margin-bottom: 0.5rem; }
.title-line { width: 60px; height: 4px; background: var(--gradient-primary); border-radius: 4px; margin-top: 0.5rem; }

/* ── ABOUT ── */
.avatar-wrapper { position: relative; width: 260px; }
.avatar-ring {
  width: 220px; height: 220px; border-radius: 50%;
  background: var(--gradient-primary); padding: 5px; margin: 0 auto;
  box-shadow: 0 12px 40px rgba(26,115,232,0.35);
  animation: pulse-ring 3s ease infinite;
}
@keyframes pulse-ring {
  0%, 100% { box-shadow: 0 12px 40px rgba(26,115,232,0.35), 0 0 0 0 rgba(79,195,247,0.4); }
  50% { box-shadow: 0 12px 40px rgba(26,115,232,0.5), 0 0 0 15px rgba(79,195,247,0); }
}
.avatar-inner { width: 100%; height: 100%; border-radius: 50%; background: var(--pale-blue); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.avatar-photo { width: 100%; height: 100%; object-fit: cover; object-position: top center; }
.avatar-badge {
  position: absolute; bottom: -10px; left: 50%; transform: translateX(-50%);
  background: var(--gradient-primary); color: var(--white);
  font-size: 0.78rem; font-weight: 600; padding: 0.4rem 1.2rem;
  border-radius: 30px; white-space: nowrap;
  box-shadow: 0 4px 14px rgba(26,115,232,0.3);
}
.about-heading { font-size: 1.7rem; font-weight: 700; color: var(--primary-blue); }
.about-text { color: var(--muted-text); font-size: 1rem; line-height: 1.85; margin-bottom: 1rem; }
.stat-card { background: var(--white); border: 2px solid var(--border-color); border-radius: 12px; padding: 1.2rem 0.5rem; transition: var(--transition); }
.stat-card:hover { border-color: var(--primary-blue); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.stat-number { font-size: 2rem; font-weight: 800; line-height: 1; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: 0.8rem; color: var(--muted-text); margin-top: 0.3rem; font-weight: 500; }

/* ── TIMELINE ── */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before {
  content: ''; position: absolute; left: 20px; top: 0; bottom: 0;
  width: 3px; background: linear-gradient(180deg, var(--primary-blue), var(--light-blue)); border-radius: 3px;
}
.timeline-item { position: relative; padding-left: 3rem; margin-bottom: 2.5rem; }
.timeline-dot {
  position: absolute; left: -8px; top: 1.2rem;
  width: 44px; height: 44px; background: var(--gradient-primary);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: var(--white); font-size: 1rem;
  box-shadow: 0 4px 14px rgba(26,115,232,0.4); z-index: 1; border: 3px solid var(--white);
}
.timeline-card {
  background: var(--white) !important; border-radius: 14px !important;
  box-shadow: var(--shadow-card) !important; transition: var(--transition);
  border-left: 4px solid var(--primary-blue) !important;
}
.timeline-card:hover { box-shadow: var(--shadow-hover) !important; transform: translateY(-3px); }
.exp-title { font-size: 1.25rem; font-weight: 700; color: var(--dark-text); }
.exp-company { font-size: 1rem; font-weight: 600; color: var(--primary-blue); }
.badge-date { background: var(--pale-blue); color: var(--primary-blue); padding: 0.35rem 0.9rem; border-radius: 30px; font-size: 0.8rem; font-weight: 600; white-space: nowrap; }
.exp-list { list-style: none; padding: 0; }
.exp-list li { position: relative; padding-left: 1.2rem; color: var(--muted-text); font-size: 0.93rem; margin-bottom: 0.5rem; line-height: 1.65; }
.exp-list li::before { content: '▹'; position: absolute; left: 0; color: var(--primary-blue); font-weight: 700; }
.tech-pills { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tech-pills span { background: var(--pale-blue); color: var(--primary-blue); padding: 0.3rem 0.85rem; border-radius: 30px; font-size: 0.78rem; font-weight: 600; border: 1px solid var(--border-color); transition: var(--transition); }
.tech-pills span:hover { background: var(--primary-blue); color: var(--white); }

/* ── SKILLS ── */
.skill-card { border-radius: 14px !important; background: var(--white); box-shadow: var(--shadow-card) !important; transition: var(--transition); border-top: 3px solid transparent !important; }
.skill-card:hover { border-top-color: var(--primary-blue) !important; box-shadow: var(--shadow-hover) !important; transform: translateY(-5px); }
.skill-icon-wrap { width: 52px; height: 52px; background: var(--pale-blue); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; color: var(--primary-blue); }
.skill-card-title { font-size: 1.05rem; font-weight: 700; color: var(--dark-text); margin-bottom: 1rem; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.skill-tags span { background: var(--pale-blue); color: var(--primary-blue); padding: 0.3rem 0.8rem; border-radius: 6px; font-size: 0.8rem; font-weight: 500; transition: var(--transition); }
.skill-tags span:hover { background: var(--primary-blue); color: var(--white); }

/* ── PROJECTS ── */
.project-card { border-radius: 16px !important; background: var(--white); box-shadow: var(--shadow-card) !important; transition: var(--transition); border-top: 3px solid transparent !important; overflow: hidden; }
.project-card:hover { border-top-color: var(--primary-blue) !important; box-shadow: var(--shadow-hover) !important; transform: translateY(-6px); }
.proj-num { font-family: 'Fira Code', monospace; font-size: 2.2rem; font-weight: 800; color: var(--border-color); line-height: 1; }
.proj-icon { width: 44px; height: 44px; background: var(--pale-blue); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--primary-blue); font-size: 1.2rem; }
.proj-title { font-size: 1.3rem; font-weight: 700; color: var(--dark-text); margin-bottom: 0.2rem; }
.proj-subtitle { font-size: 0.88rem; font-style: italic; }
.proj-desc-list { list-style: none; padding: 0; }
.proj-desc-list li { position: relative; padding-left: 1.2rem; color: var(--muted-text); font-size: 0.9rem; margin-bottom: 0.4rem; line-height: 1.6; }
.proj-desc-list li::before { content: '▸'; position: absolute; left: 0; color: var(--light-blue); font-weight: 700; }
.proj-links { border-top: 1px solid var(--border-color); padding-top: 0.8rem; }
.proj-link { color: var(--primary-blue); font-weight: 600; font-size: 0.88rem; text-decoration: none; transition: var(--transition); }
.proj-link:hover { color: var(--light-blue); text-decoration: none; }

/* ── CERTIFICATIONS ── */
.cert-card { border-radius: 14px !important; background: var(--white); box-shadow: var(--shadow-card) !important; transition: var(--transition); border-top: 3px solid transparent !important; }
.cert-card:hover { border-top-color: var(--primary-blue) !important; box-shadow: var(--shadow-hover) !important; transform: translateY(-5px); }
.cert-icon { width: 52px; height: 52px; background: var(--pale-blue); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; color: var(--primary-blue); }
.cert-title { font-size: 1.05rem; font-weight: 700; color: var(--dark-text); margin-bottom: 0.2rem; }
.cert-issuer { font-size: 0.9rem; font-weight: 600; color: var(--primary-blue); }
.cert-meta { font-size: 0.8rem; }

/* ── EDUCATION ── */
.edu-card { border-radius: 16px !important; background: var(--white); box-shadow: var(--shadow-card) !important; transition: var(--transition); border-bottom: 3px solid transparent !important; }
.edu-card:hover { border-bottom-color: var(--primary-blue) !important; box-shadow: var(--shadow-hover) !important; transform: translateY(-5px); }
.edu-icon { width: 70px; height: 70px; background: var(--gradient-primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.8rem; color: var(--white); margin: 0 auto; box-shadow: 0 6px 20px rgba(26,115,232,0.3); }
.edu-degree { font-size: 1.1rem; font-weight: 700; color: var(--dark-text); margin-bottom: 0.2rem; }
.edu-degree-short { font-family: 'Fira Code', monospace; font-size: 0.95rem; font-weight: 600; }
.edu-college { font-size: 0.9rem; color: var(--primary-blue); font-weight: 600; margin-bottom: 0.2rem; }
.edu-univ { font-size: 0.82rem; }

/* ── CONTACT ── */
.contact-section { background: var(--gradient-hero); position: relative; overflow: hidden; }
.contact-section .section-title { color: var(--white); }
.contact-info-card { background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2); border-radius: 16px; padding: 2.5rem; backdrop-filter: blur(10px); }
.contact-detail-item { display: flex; align-items: flex-start; gap: 1rem; }
.contact-det-icon { width: 42px; height: 42px; background: rgba(255,255,255,0.2); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--white); font-size: 1rem; flex-shrink: 0; }
.contact-social-btn { width: 42px; height: 42px; background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3); border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; color: var(--white); font-size: 1rem; text-decoration: none; transition: var(--transition); }
.contact-social-btn:hover { background: var(--white); color: var(--primary-blue); transform: translateY(-3px); }

/* ── FOOTER ── */
.footer { background: #0d1b2a; color: rgba(255,255,255,0.7); }
.brand-bracket-dark { color: var(--light-blue); font-weight: 700; }
.footer-text { font-size: 0.88rem; color: rgba(255,255,255,0.55); }
.footer-copy { font-size: 0.82rem; color: rgba(255,255,255,0.4); }

/* ── SCROLL ANIMATIONS ── */
.animate-on-scroll { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ── */
@media (max-width: 991px) {
  .section-pad { padding: 70px 0; }
  .timeline::before { left: 16px; }
  .timeline-dot { left: -10px; width: 38px; height: 38px; font-size: 0.9rem; }
  .timeline-item { padding-left: 2.5rem; }
}
@media (max-width: 767px) {
  .hero-name { font-size: 2.5rem; }
  .section-title { font-size: 1.8rem; }
  .avatar-ring { width: 180px; height: 180px; }
  .avatar-initials { font-size: 3rem; }
}
@media (max-width: 575px) {
  .section-pad { padding: 55px 0; }
  .hero-section { padding-top: 90px; }
}