/* ============================================================
   VISHU ADAPA PORTFOLIO — style.css
   ============================================================ */

/* === Reset & Variables === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:       #0f172a;
  --slate:      #1e293b;
  --blue:       #2563eb;
  --blue-light: #3b82f6;
  --blue-pale:  #eff6ff;
  --white:      #ffffff;
  --gray-50:    #f8fafc;
  --gray-100:   #f1f5f9;
  --gray-200:   #e2e8f0;
  --gray-400:   #94a3b8;
  --gray-500:   #64748b;
  --gray-700:   #334155;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);
  --shadow-lg: 0 10px 24px rgba(0,0,0,.12);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* === NAVBAR === */
.navbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  transition: background .3s, box-shadow .3s;
}
.navbar.scrolled {
  background: rgba(15, 23, 42, .96);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255,255,255,.08);
}
.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-size: 1rem;
  font-weight: 800;
  color: var(--white);
  text-decoration: none;
  background: var(--blue);
  width: 38px; height: 38px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  letter-spacing: -0.5px;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  color: rgba(255,255,255,.75);
  text-decoration: none;
  font-size: .875rem;
  font-weight: 500;
  transition: color .2s;
}
.nav-links a:hover { color: var(--white); }
.nav-cta {
  background: var(--blue) !important;
  color: var(--white) !important;
  padding: 7px 16px !important;
  border-radius: 6px;
}
.nav-cta:hover { background: var(--blue-light) !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: .3s;
}

/* === HERO === */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #0f172a 0%, #0f2744 55%, #0a1628 100%);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 100px 0 80px;
}
/* Particle canvas sits behind everything */
.hero-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    radial-gradient(circle at 20% 55%, rgba(37,99,235,.18) 0%, transparent 50%),
    radial-gradient(circle at 75% 20%, rgba(59,130,246,.12) 0%, transparent 40%),
    radial-gradient(circle at 60% 80%, rgba(37,99,235,.08) 0%, transparent 35%);
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
}

/* CISSP Shield */
.cissp-shield {
  display: inline-block;
  margin-bottom: 20px;
  animation: shieldFloat 4s ease-in-out infinite;
  filter: drop-shadow(0 0 12px rgba(59,130,246,.5));
  cursor: default;
}
@keyframes shieldFloat {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

/* Hero staggered entrance */
.hero-animate {
  opacity: 0;
  transform: translateY(24px);
  animation: heroFadeUp .7s ease forwards;
  animation-delay: var(--delay, 0s);
}
@keyframes heroFadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* Typewriter cursor */
.tw-cursor {
  display: inline-block;
  color: #93c5fd;
  font-weight: 300;
  animation: blink .75s step-end infinite;
  margin-left: 2px;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}
.hero-name {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1.05;
  margin-bottom: 18px;
  background: linear-gradient(135deg, #ffffff 0%, #93c5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 500;
  color: rgba(255,255,255,.88);
  margin-bottom: 12px;
}
.hero-subtitle {
  font-size: .9rem;
  color: rgba(255,255,255,.45);
  letter-spacing: .5px;
  margin-bottom: 18px;
}
.hero-location {
  font-size: .875rem;
  color: rgba(255,255,255,.5);
  margin-bottom: 40px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  padding: 13px 26px;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all .2s;
  display: inline-block;
  cursor: pointer;
}
.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover {
  background: var(--blue-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,99,235,.4);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,.28);
}
.btn-outline:hover {
  border-color: rgba(255,255,255,.65);
  background: rgba(255,255,255,.05);
}

.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.35);
  font-size: .7rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px; height: 36px;
  background: linear-gradient(to bottom, rgba(255,255,255,.35), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: .4; }
  50%       { opacity: 1; }
}

/* === SECTIONS === */
.section { padding: 96px 0; }
.section-alt { background: var(--gray-50); }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -.5px;
  line-height: 1.2;
}

/* === ABOUT === */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.about-text p {
  color: var(--gray-500);
  margin-bottom: 18px;
  line-height: 1.8;
  font-size: 1rem;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--gray-100);
}
.stat { text-align: center; }
.stat-number {
  display: block;
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: .7rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: .5px;
}
.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.highlight-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow .2s, transform .2s;
}
.highlight-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.highlight-icon { font-size: 1.6rem; margin-bottom: 12px; }
.highlight-card h3 { font-size: .9rem; font-weight: 600; color: var(--navy); margin-bottom: 8px; }
.highlight-card p  { font-size: .82rem; color: var(--gray-500); line-height: 1.6; }

/* === SKILLS === */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.skill-category {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 22px;
}
.skill-category h3 {
  font-size: .875rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--gray-100);
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-tags span {
  background: var(--blue-pale);
  color: var(--blue);
  font-size: .76rem;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 100px;
  white-space: nowrap;
}

/* === TIMELINE === */
.timeline { position: relative; max-width: 820px; margin: 0 auto; }
.timeline::before {
  content: '';
  position: absolute;
  left: 15px; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--gray-200);
}
.timeline-item {
  position: relative;
  padding-left: 54px;
  margin-bottom: 28px;
}
.timeline-dot {
  position: absolute;
  left: 7px; top: 22px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--gray-200);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--gray-200);
}
.timeline-dot.current {
  background: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-light);
  animation: dotPulse 2.5s ease-in-out infinite;
}
@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 3px var(--blue-light); }
  50%       { box-shadow: 0 0 0 6px rgba(59,130,246,.2); }
}
.timeline-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 22px;
  transition: box-shadow .2s;
}
.timeline-card:hover { box-shadow: var(--shadow-md); }
.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 6px;
}
.timeline-header h3 { font-size: 1rem; font-weight: 600; color: var(--navy); margin-bottom: 3px; }
.company { font-size: .875rem; font-weight: 500; color: var(--blue); }
.timeline-meta { text-align: right; flex-shrink: 0; }
.timeline-date { display: block; font-size: .78rem; color: var(--gray-500); white-space: nowrap; }
.timeline-duration { display: block; font-size: .72rem; color: var(--gray-400); margin-top: 2px; }
.timeline-badge {
  display: inline-block;
  font-size: .68rem; font-weight: 600;
  padding: 2px 10px; border-radius: 100px;
  margin-top: 4px;
}
.current-badge { background: rgba(37,99,235,.1); color: var(--blue); }
.timeline-location { font-size: .78rem; color: var(--gray-400); margin-bottom: 10px; }
.timeline-bullets { list-style: none; margin-top: 10px; }
.timeline-bullets li {
  font-size: .875rem;
  color: var(--gray-500);
  padding-left: 16px;
  position: relative;
  margin-bottom: 6px;
  line-height: 1.65;
}
.timeline-bullets li::before { content: '→'; position: absolute; left: 0; color: var(--blue); font-size: .78rem; top: 2px; }

/* Earlier roles card */
.earlier-card { background: var(--gray-50); }
.earlier-title {
  font-size: .72rem; font-weight: 700;
  color: var(--gray-400);
  text-transform: uppercase; letter-spacing: .8px;
  margin-bottom: 16px;
}
.earlier-roles { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.earlier-role { display: flex; flex-direction: column; gap: 2px; }
.earlier-company { font-size: .85rem; font-weight: 600; color: var(--navy); }
.earlier-position { font-size: .8rem; color: var(--gray-500); }
.earlier-dates { font-size: .72rem; color: var(--gray-400); }

/* === CERTIFICATIONS === */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 18px;
}
.cert-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 22px;
  text-align: center;
  transition: box-shadow .2s, transform .2s;
}
.cert-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.cert-card.featured {
  border-color: #93c5fd;
  background: linear-gradient(145deg, var(--blue-pale), var(--white));
}
.cert-icon { font-size: 1.75rem; margin-bottom: 10px; }
.cert-card h3 { font-size: .875rem; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
.cert-card p  { font-size: .78rem; color: var(--gray-500); line-height: 1.5; margin-bottom: 12px; }
.cert-issuer {
  display: inline-block;
  font-size: .7rem; font-weight: 600;
  color: var(--blue);
  background: var(--blue-pale);
  padding: 3px 10px; border-radius: 100px;
}

/* === CONTACT === */
.contact-section {
  background: linear-gradient(135deg, #0f172a 0%, #0f2744 100%);
}
.section-header.light h2 { color: var(--white); }
.section-tag-light {
  display: inline-block;
  font-size: .72rem; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: #93c5fd; margin-bottom: 12px;
}
.contact-intro {
  color: rgba(255,255,255,.55);
  font-size: .95rem;
  margin-top: 10px;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 680px;
  margin: 0 auto;
}
.contact-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  text-decoration: none;
  color: var(--white);
  transition: all .2s;
  display: block;
}
.contact-card:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.22);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0,0,0,.3);
}
.contact-icon { font-size: 1.75rem; margin-bottom: 10px; }
.contact-card h3 { font-size: .875rem; font-weight: 600; color: rgba(255,255,255,.88); margin-bottom: 5px; }
.contact-card p  { font-size: .78rem; color: rgba(255,255,255,.45); }

/* === FOOTER === */
.footer { background: #070c18; padding: 22px 0; text-align: center; }
.footer p { font-size: .8rem; color: rgba(255,255,255,.28); }
.footer a { color: rgba(255,255,255,.45); text-decoration: none; }
.footer a:hover { color: rgba(255,255,255,.75); }

/* === SCROLL FADE-IN ANIMATION === */
.fade-in {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-highlights { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: rgba(15,23,42,.98);
    flex-direction: column;
    padding: 20px 24px;
    gap: 14px;
    border-bottom: 1px solid rgba(255,255,255,.08);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }

  .about-stats  { grid-template-columns: repeat(2, 1fr); }
  .earlier-roles { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; max-width: 320px; }
  .timeline-header { flex-direction: column; gap: 6px; }
  .timeline-meta { text-align: left; }
  .section { padding: 64px 0; }
  .section-header { margin-bottom: 40px; }
}
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 260px; text-align: center; }
  .about-highlights { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 360px) {
  .certs-grid { grid-template-columns: 1fr; }
  .about-stats  { grid-template-columns: repeat(2, 1fr); }
}