/* ============================================
   SHRUTI NARMETI – Portfolio Stylesheet
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --primary: #1a3a5c;
  --accent: #2e80ce;
  --accent-light: #5aa8e6;
  --bg: #f7f9fc;
  --white: #ffffff;
  --text: #2d3748;
  --text-muted: #718096;
  --border: #e2e8f0;
  --card-bg: #ffffff;
  --section-alt: #eef4fb;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --transition: 0.3s ease;
  --max-width: 1100px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-light); }

ul { list-style: none; }

img { max-width: 100%; }

/* ---------- Layout helpers ---------- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

section { padding: 80px 0; }
section:nth-child(even) { background: var(--section-alt); }

.section-title {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  position: relative;
  display: inline-block;
}
.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  margin-top: 6px;
}
.section-header { margin-bottom: 48px; }
.section-subtitle { color: var(--text-muted); margin-top: 8px; }

/* ---------- Navigation ---------- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
nav.scrolled { box-shadow: 0 2px 16px rgba(0,0,0,0.08); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 28px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  position: relative;
  padding-bottom: 2px;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }

/* Hamburger */
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--primary);
  transition: all var(--transition);
  border-radius: 2px;
}

/* ---------- Hero ---------- */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary) 0%, #1e5291 60%, #2e80ce 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
  padding: 100px 0 80px;
}
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
}

.hero-content { position: relative; z-index: 1; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 24px;
  color: rgba(255,255,255,0.9);
}
.hero-badge .dot {
  width: 8px; height: 8px;
  background: #4ade80;
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

.hero-name {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 12px;
  letter-spacing: -1px;
}

.hero-title {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  font-weight: 400;
  opacity: 0.88;
  margin-bottom: 20px;
}

.hero-summary {
  max-width: 640px;
  font-size: 1rem;
  opacity: 0.8;
  line-height: 1.8;
  margin-bottom: 40px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--white);
  color: var(--primary);
}
.btn-primary:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  color: var(--primary);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
  color: var(--white);
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 56px;
  flex-wrap: wrap;
}
.stat { text-align: left; }
.stat-value {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}
.stat-label {
  font-size: 0.8rem;
  opacity: 0.7;
  margin-top: 4px;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.about-text p { color: var(--text-muted); margin-bottom: 16px; }

.about-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 28px;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.93rem;
  color: var(--text);
}
.contact-item svg { color: var(--accent); flex-shrink: 0; }

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.highlight-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.highlight-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}
.highlight-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
}
.highlight-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 24px;
}
.skill-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.skill-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.skill-card-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}
.skill-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  background: var(--section-alt);
  color: var(--accent);
  border: 1px solid #c3ddf5;
  font-size: 0.78rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 50px;
}

/* ---------- Experience ---------- */
.timeline { position: relative; padding-left: 36px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 10px; top: 0; bottom: 0;
  width: 2px;
  background: var(--border);
}
.timeline-item { position: relative; margin-bottom: 48px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -31px; top: 6px;
  width: 16px; height: 16px;
  background: var(--accent);
  border: 3px solid var(--white);
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--accent);
}
.exp-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  transition: box-shadow var(--transition);
}
.exp-card:hover { box-shadow: var(--shadow); }

.exp-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 6px;
}
.exp-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
}
.exp-badge {
  background: var(--section-alt);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  border: 1px solid #c3ddf5;
}
.exp-company {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.exp-company strong { color: var(--text); }
.exp-bullets { padding-left: 0; }
.exp-bullets li {
  position: relative;
  padding-left: 18px;
  color: var(--text-muted);
  font-size: 0.93rem;
  margin-bottom: 8px;
}
.exp-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.8rem;
  top: 2px;
}

/* ---------- Education ---------- */
.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.edu-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.edu-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.edu-icon { font-size: 2.5rem; margin-bottom: 16px; }
.edu-degree {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}
.edu-school { font-size: 0.95rem; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.edu-meta { font-size: 0.83rem; color: var(--text-muted); }

/* ---------- Certifications & Development ---------- */
.certs-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }

.cert-list { display: flex; flex-direction: column; gap: 14px; }
.cert-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.cert-item:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.cert-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.cert-name { font-size: 0.93rem; font-weight: 600; color: var(--primary); }
.cert-org { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }

.dev-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  height: fit-content;
}
.dev-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.dev-card-header .dev-icon { font-size: 1.8rem; }
.dev-card-title { font-size: 1rem; font-weight: 700; color: var(--primary); }
.dev-card-subtitle { font-size: 0.82rem; color: var(--text-muted); }
.dev-bullets { padding-left: 0; }
.dev-bullets li {
  position: relative;
  padding-left: 18px;
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 8px;
}
.dev-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.8rem;
  top: 2px;
}

/* ---------- Contact ---------- */
#contact { background: linear-gradient(135deg, var(--primary) 0%, #1e5291 100%); color: var(--white); }
#contact .section-title { color: var(--white); }
#contact .section-title::after { background: var(--accent-light); }
#contact .section-subtitle { color: rgba(255,255,255,0.7); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.contact-info p { color: rgba(255,255,255,0.75); margin-bottom: 32px; }
.contact-links { display: flex; flex-direction: column; gap: 16px; }
.contact-link {
  display: flex;
  align-items: center;
  gap: 14px;
  color: rgba(255,255,255,0.85);
  font-size: 0.93rem;
  transition: color var(--transition);
}
.contact-link:hover { color: var(--white); }
.contact-link-icon {
  width: 44px; height: 44px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}

.contact-cta {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
}
.contact-cta h3 { font-size: 1.3rem; margin-bottom: 10px; }
.contact-cta p { color: rgba(255,255,255,0.7); margin-bottom: 28px; font-size: 0.93rem; }
.btn-white {
  background: var(--white);
  color: var(--primary);
  padding: 13px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
}
.btn-white:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  color: var(--primary);
}

/* ---------- Footer ---------- */
footer {
  background: #0f2540;
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 28px 24px;
  font-size: 0.82rem;
}

/* ---------- Scroll-reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .about-grid, .contact-grid, .certs-wrapper { grid-template-columns: 1fr; gap: 32px; }
  .about-highlights { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  section { padding: 60px 0; }
  .nav-links { display: none; position: fixed; top: 64px; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 24px; gap: 20px; border-bottom: 1px solid var(--border); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .hero-stats { gap: 24px; }
  .about-highlights { grid-template-columns: 1fr 1fr; }
  .timeline { padding-left: 28px; }
  .exp-card { padding: 20px; }
}