/* ============================================
   Bharath G — Portfolio Stylesheet
   Design: Clean white, single blue accent
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-text-lighter: #94a3b8;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-primary-glow: rgba(37, 99, 235, 0.12);
  --color-border: #e2e8f0;
  --color-card-bg: #ffffff;
  --color-overlay: rgba(15, 23, 42, 0.7);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1140px;
  --nav-height: 64px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.08);
  --transition-fast: 200ms ease;
  --transition-base: 300ms ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}

img {
  max-width: 100%;
  display: block;
}

ul, ol {
  list-style: none;
}

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: -0.025em;
}

.section-header p {
  color: var(--color-text-light);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

.section-header .accent-line {
  width: 48px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  margin: 16px auto 0;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: 0.925rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

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

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.03em;
}

.nav-logo span {
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--color-text-light);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: width var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-resume {
  margin-left: 8px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 680px;
}

.hero-image {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image-wrapper {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--color-primary-light);
  box-shadow: 0 0 0 8px var(--color-primary-glow), var(--shadow-lg);
  transition: all var(--transition-base);
}

.hero-image-wrapper:hover {
  border-color: var(--color-primary);
  transform: scale(1.03);
}

.hero-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-greeting {
  display: inline-block;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  color: var(--color-text);
  margin-bottom: 16px;
}

.hero h1 .highlight {
  color: var(--color-primary);
}

.hero-tagline {
  font-size: 1.2rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
  font-weight: 400;
}

.hero-intro {
  font-size: 1.05rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
  max-width: 540px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

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

.hero-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  color: var(--color-text-light);
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.hero-social a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
  transform: translateY(-2px);
}

/* ---------- About Section ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text p {
  color: var(--color-text-light);
  margin-bottom: 20px;
  font-size: 1.02rem;
  line-height: 1.8;
}

.about-interests h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--color-text);
}

.interest-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 16px;
  transition: all var(--transition-fast);
}

.interest-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.interest-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.interest-card h4 i {
  color: var(--color-primary);
  font-size: 1rem;
}

.interest-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ---------- Skills Section ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.skill-category {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: all var(--transition-fast);
}

.skill-category:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.skill-category h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.skill-category h3 i {
  color: var(--color-primary);
  font-size: 1.1rem;
}

.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.skill-pill:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.skill-pill.proficient {
  background: var(--color-primary-light);
  border-color: rgba(37, 99, 235, 0.3);
  color: var(--color-primary);
}

.skill-pill.proficient::after {
  content: '★';
  font-size: 0.7rem;
}

/* ---------- Experience Timeline ---------- */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-left: 40px;
  margin-bottom: 48px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -5px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.timeline-date {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 3px 12px;
  border-radius: 100px;
  margin-bottom: 12px;
}

.timeline-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition-fast);
}

.timeline-card:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.timeline-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.timeline-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.timeline-tech span {
  font-size: 0.78rem;
  font-weight: 500;
  padding: 2px 10px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  color: var(--color-text-light);
}

.timeline-card ul {
  list-style: none;
}

.timeline-card ul li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.timeline-card ul li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1.5;
}

/* ---------- Internship Section ---------- */
.internship-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
  align-items: start;
  transition: all var(--transition-fast);
}

.internship-card:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.internship-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.internship-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.2rem;
}

.internship-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 2px;
}

.internship-company {
  font-size: 0.92rem;
  color: var(--color-text-light);
  font-weight: 500;
}

.internship-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}

.internship-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-text-lighter);
  font-weight: 500;
}

.internship-meta span i {
  color: var(--color-primary);
  font-size: 0.85rem;
}

.internship-desc {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.internship-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.internship-cert .cert-card {
  width: 100%;
}

/* ---------- Projects Section ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.project-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
  transform: translateY(-4px);
}

.project-card-header {
  padding: 28px 28px 0;
}

.project-card-header .project-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.project-card-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.3;
}

.project-card-body {
  padding: 0 28px;
  flex: 1;
}

.project-card-body p {
  font-size: 0.92rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.7;
}

.project-features {
  margin-bottom: 16px;
}

.project-features h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-features ul li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 6px;
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.project-features ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.85rem;
}

.project-in-progress {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 16px;
  background: #fffbeb;
  border: 1px solid #fef3c7;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 0.85rem;
  color: #92400e;
  line-height: 1.5;
}

.project-in-progress i {
  margin-top: 2px;
  flex-shrink: 0;
}

.project-card-footer {
  padding: 20px 28px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

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

.project-tech span {
  font-size: 0.78rem;
  font-weight: 500;
  padding: 3px 10px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  color: var(--color-text-light);
}

/* ---------- Education Section ---------- */
.edu-timeline {
  max-width: 800px;
  margin: 0 auto;
}

.edu-item {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  padding: 24px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  transition: all var(--transition-fast);
}

.edu-item:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.edu-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.2rem;
}

.edu-details h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.edu-details .edu-institution {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 6px;
}

.edu-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.edu-meta span {
  font-size: 0.82rem;
  color: var(--color-text-lighter);
  display: flex;
  align-items: center;
  gap: 4px;
}

.edu-meta span i {
  font-size: 0.8rem;
}

.edu-score {
  font-weight: 600;
  color: var(--color-primary) !important;
}

/* ---------- Certifications & Achievements ---------- */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cert-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cert-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  transform: translateY(-3px);
}

.cert-card-img {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.cert-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cert-card-img .cert-overlay {
  position: absolute;
  inset: 0;
  background: rgba(37, 99, 235, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.cert-card:hover .cert-overlay {
  opacity: 1;
}

.cert-overlay i {
  font-size: 1.5rem;
  color: var(--color-primary);
  background: #fff;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.cert-card-body {
  padding: 16px;
}

.cert-card-body .cert-type {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.cert-card-body h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  padding: 32px;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  max-width: 860px;
  width: 100%;
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transform: scale(0.92);
  transition: transform var(--transition-base);
  box-shadow: 0 25px 60px rgba(0,0,0,0.2);
}

.lightbox.active .lightbox-content {
  transform: scale(1);
}

.lightbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border);
}

.lightbox-header h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

.lightbox-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--color-bg-alt);
  color: var(--color-text-light);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.lightbox-close:hover {
  background: #fee2e2;
  color: #dc2626;
}

.lightbox-body {
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  max-height: 75vh;
  overflow: auto;
}

.lightbox-body img {
  max-width: 100%;
  max-height: 65vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

/* ---------- Co-curricular ---------- */
.cocurricular-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.cocurricular-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 24px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.cocurricular-card:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.cocurricular-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.1rem;
}

.cocurricular-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.cocurricular-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ---------- Footer ---------- */
.footer {
  background: #0f172a;
  color: #e2e8f0;
  padding: 64px 0 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: start;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-info h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.footer-info p {
  font-size: 0.95rem;
  color: #94a3b8;
  max-width: 420px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-contact-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #94a3b8;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-contact-list a:hover {
  color: var(--color-primary);
}

.footer-contact-list a i {
  width: 20px;
  text-align: center;
  font-size: 0.95rem;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.06);
  color: #94a3b8;
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  font-size: 0.82rem;
  color: #64748b;
}

/* ---------- Scroll to Top ---------- */
.scroll-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-base);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
  z-index: 500;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}

/* ---------- Animation Classes ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }
.reveal-delay-7 { transition-delay: 0.7s; }
.reveal-delay-8 { transition-delay: 0.8s; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-image {
    order: -1;
  }

  .hero-image-wrapper {
    width: 220px;
    height: 220px;
  }

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

  .hero-intro {
    margin-left: auto;
    margin-right: auto;
  }

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

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

  .hero h1 {
    font-size: 2.8rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

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

  .certs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .section-header h2 {
    font-size: 1.65rem;
  }

  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 80px 32px 32px;
    gap: 0;
    box-shadow: -10px 0 30px rgba(0,0,0,0.1);
    transition: right var(--transition-base);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    padding: 12px 0;
    font-size: 1rem;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-resume {
    margin-left: 0;
    margin-top: 12px;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-height) + 48px);
    padding-bottom: 48px;
  }

  .hero-image-wrapper {
    width: 180px;
    height: 180px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-tagline {
    font-size: 1.05rem;
  }

  .internship-card {
    grid-template-columns: 1fr;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .certs-grid {
    grid-template-columns: 1fr;
  }

  .cocurricular-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .edu-item {
    flex-direction: column;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero h1 {
    font-size: 1.85rem;
  }

  .hero-image-wrapper {
    width: 150px;
    height: 150px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-social {
    flex-wrap: wrap;
  }

  .timeline::before {
    display: none;
  }

  .timeline-item {
    padding-left: 0;
  }

  .timeline-dot {
    display: none;
  }
}

/* Mobile menu overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}