/* ==========================================================================
   Design System & Master Variables
   ========================================================================== */
:root {
  --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --font-code: 'Fira Code', monospace;

  /* Color Palette - Dark Cyber / Slate / Cyan / Violet */
  --bg-dark: #090D16;
  --bg-dark-alt: #0F1626;
  --bg-card: rgba(18, 24, 38, 0.75);
  --bg-card-hover: rgba(26, 35, 55, 0.85);

  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-hover: rgba(99, 102, 241, 0.35);

  --accent-primary: #6366F1;
  --accent-cyan: #06B6D4;
  --accent-purple: #A855F7;
  --accent-emerald: #10B981;
  --accent-gold: #F59E0B;

  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  --gradient-main: linear-gradient(135deg, #6366F1 0%, #06B6D4 50%, #A855F7 100%);
  --gradient-glow: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(6, 182, 212, 0.2));
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);

  --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.25);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Background Canvas & Ambient Glows */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  pointer-events: none;
}

.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.35;
}

.glow-1 {
  top: -10%;
  left: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, var(--accent-primary) 0%, transparent 70%);
}

.glow-2 {
  top: 40%;
  right: -10%;
  width: 45vw;
  height: 45vw;
  background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
}

.glow-3 {
  bottom: -10%;
  left: 20%;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, var(--accent-purple) 0%, transparent 70%);
}

/* Typography & Global Utilities */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.25;
}

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

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

.gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-highlight {
  color: #38BDF8;
}

.text-gold { color: var(--accent-gold); }
.text-emerald { color: var(--accent-emerald); }

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
  position: relative;
}

.section.bg-alt {
  background-color: rgba(15, 22, 38, 0.4);
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-subtitle {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 2px;
  font-weight: 700;
  color: var(--accent-cyan);
  display: block;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-line {
  width: 70px;
  height: 4px;
  background: var(--gradient-main);
  margin: 0 auto;
  border-radius: var(--radius-full);
}

/* Glassmorphism Cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-lg);
}

.glass-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 1.6rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  outline: none;
  text-decoration: none;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--gradient-main);
  color: #FFF;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.6);
  color: #FFF;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--accent-cyan);
  color: #FFF;
}

.btn-outline {
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
}

.btn-outline:hover {
  background: var(--accent-cyan);
  color: #000;
}

.btn-glass {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  color: #FFF;
}

/* Copy Icon Button */
.copy-btn, .btn-icon-copy {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  margin-left: 0.4rem;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.copy-btn:hover, .btn-icon-copy:hover {
  color: var(--accent-cyan);
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.2rem 0;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  padding: 0.8rem 0;
}

.nav-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.brand-accent {
  color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-main);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  min-height: 100vh;
  padding-top: 8rem;
  padding-bottom: 4rem;
  display: flex;
  align-items: center;
}

.hero-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(6, 182, 212, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(6, 182, 212, 0); }
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 1.2rem;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 1.8rem;
  max-width: 650px;
}

.hero-academic-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 2rem;
}

.chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-main);
}

.chip i {
  color: var(--accent-cyan);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.social-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.social-icon:hover {
  background: var(--accent-primary);
  color: #FFF;
  border-color: var(--accent-primary);
  transform: translateY(-3px);
}

/* Hero Visual / Code Card */
.hero-visual {
  position: relative;
}

.hero-card-stack {
  position: relative;
}

.main-hero-card {
  padding: 1.5rem;
  background: #0B111E;
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

.card-header-dots {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.red { background: #EF4444; }
.dot.yellow { background: #F59E0B; }
.dot.green { background: #10B981; }

.code-title {
  font-family: var(--font-code);
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-left: auto;
}

.code-snippet {
  font-family: var(--font-code);
  font-size: 0.85rem;
  line-height: 1.6;
  color: #E2E8F0;
  overflow-x: auto;
}

.code-keyword { color: #F472B6; }
.code-class { color: #38BDF8; }
.code-func { color: #A78BFA; }
.code-str { color: #34D399; }
.code-num { color: #FBBF24; }

.floating-badge {
  position: absolute;
  background: rgba(18, 24, 38, 0.9);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass-hover);
  padding: 0.8rem 1.2rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.8rem;
  box-shadow: var(--shadow-lg);
  animation: float 4s ease-in-out infinite;
}

.badge-top-right {
  top: -20px;
  right: -20px;
}

.badge-bottom-left {
  bottom: -20px;
  left: -20px;
  animation-delay: 2s;
}

.badge-label {
  display: block;
  font-weight: 700;
  font-size: 0.85rem;

}

.badge-sub {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ==========================================================================
   Metrics Section
   ========================================================================== */
.metrics-section {
  padding: 3rem 0;
  background: rgba(15, 22, 38, 0.6);
  border-y: 1px solid var(--border-glass);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.metric-card {
  text-align: center;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.metric-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-cyan);
}

.metric-icon {
  font-size: 1.8rem;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
}

.metric-value {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 2rem;
}

.about-text h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--accent-cyan);
}

.about-text p {
  margin-bottom: 1.2rem;
  color: var(--text-muted);
  font-size: 1rem;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  margin-top: 2rem;
}

.about-highlight-item {
  display: flex;
  gap: 1rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
}

.about-highlight-item i {
  font-size: 1.5rem;
  color: var(--accent-primary);
  margin-top: 0.2rem;
}

.about-highlight-item h4 {
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
}

.about-highlight-item p {
  font-size: 0.8rem;
  margin: 0;
  color: var(--text-dim);
}

.info-list {
  list-style: none;
  margin: 1.5rem 0;
}

.info-list li {
  display: flex;
  justify-content: space-between;
  padding: 0.7rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.9rem;
}

.info-label {
  color: var(--text-muted);
  font-weight: 500;
}

.info-val {
  color: var(--text-main);
  font-weight: 600;
  text-align: right;
}

.card-action-box {
  margin-top: 1.5rem;
}

/* ==========================================================================
   Education Timeline Section
   ========================================================================== */
.timeline {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 0;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent-primary), var(--accent-cyan));
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
  width: 50%;
}

.timeline-item.left {
  left: 0;
  padding-right: 3rem;
}

.timeline-item.right {
  left: 50%;
  padding-left: 3rem;
}

.timeline-dot {
  position: absolute;
  top: 0;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 2px solid var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1.2rem;
  z-index: 10;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.5);
}

.timeline-item.left .timeline-dot {
  right: -23px;
}

.timeline-item.right .timeline-dot {
  left: -23px;
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.timeline-period {
  font-size: 0.8rem;
  color: var(--accent-cyan);
  font-weight: 600;
  text-transform: uppercase;
}

.timeline-title {
  font-size: 1.3rem;
  margin-top: 0.2rem;
}

.timeline-degree {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 0.2rem;
}

.badge-gpa {
  background: var(--gradient-glow);
  border: 1px solid var(--accent-primary);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  text-align: right;
}

.gpa-main {
  display: block;
  font-weight: 800;
  color: #FFF;
  font-size: 0.9rem;
}

.gpa-sub {
  display: block;
  font-size: 0.75rem;
  color: var(--accent-emerald);
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Skills Section
   ========================================================================== */
.skills-filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 2.5rem;
}

.skill-filter-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.skill-filter-btn:hover, .skill-filter-btn.active {
  background: var(--accent-primary);
  color: #FFF;
  border-color: var(--accent-primary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.skill-card {
  text-align: left;
}

.skill-icon {
  font-size: 2rem;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
}

.skill-card h3 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-pill {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.skill-pill.highlight {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--accent-primary);
  color: #FFF;
}

.skill-pill:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* ==========================================================================
   Projects Section
   ========================================================================== */
.project-controls {
  margin-bottom: 2.5rem;
}

.search-box {
  position: relative;
  max-width: 600px;
  margin: 0 auto 1.5rem auto;
}

.search-box i {
  position: absolute;
  left: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
}

.search-box input {
  width: 100%;
  padding: 0.9rem 1rem 0.9rem 3rem;
  background: rgba(18, 24, 38, 0.8);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition-fast);
}

.search-box input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
}

.clear-btn {
  position: absolute;
  right: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
}

.project-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.project-tab {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.project-tab:hover, .project-tab.active {
  background: var(--accent-cyan);
  color: #000;
  border-color: var(--accent-cyan);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.8rem;
}

.project-card {
  display: flex;
  flex-direction: column;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.8rem;
}

.project-date {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.project-category-badge {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-cyan);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);

}

.project-title {
  font-size: 1.35rem;
  margin-bottom: 0.4rem;

}

.project-tech-stack {
  font-size: 0.82rem;
  color: var(--accent-purple);
  font-family: var(--font-code);
  margin-bottom: 0.8rem;
}

.project-snippet {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.project-bullets {
  list-style-type: none;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.project-bullets li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.4rem;
}

.project-bullets li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
}

.project-footer {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.project-tech-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-tech-pills span {
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  color: var(--text-dim);
}

/* ==========================================================================
   Awards Section
   ========================================================================== */
.awards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.award-card {
  position: relative;
  overflow: hidden;
}

.award-badge {
  font-size: 2.2rem;
  color: var(--accent-cyan);
  margin-bottom: 0.8rem;
}

.award-year {
  font-size: 0.8rem;
  font-family: var(--font-code);
  color: var(--accent-purple);
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.award-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.4rem;
}

.award-org {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
}

.award-card p {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.highlight-card {
  border-color: rgba(245, 158, 11, 0.4);
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.08) 0%, rgba(18, 24, 38, 0.8) 100%);
}

/* ==========================================================================
   Leadership Section
   ========================================================================== */
.leadership-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.leadership-card .card-icon {
  font-size: 2rem;
  color: var(--accent-cyan);
  margin-bottom: 0.8rem;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  margin-bottom: 0.4rem;
}

.card-meta .role {
  font-weight: 700;
  color: var(--accent-primary);
}

.card-meta .timeline-span {
  color: var(--text-dim);
}

.leadership-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.8rem;
}

.activity-bullets {
  list-style: none;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.activity-bullets li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.4rem;
}

.activity-bullets li::before {
  content: "•";
  position: absolute;
  left: 0.3rem;
  color: var(--accent-cyan);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2rem;
}

.contact-info h3 {
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
  color: var(--accent-cyan);
}

.contact-info p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.contact-details-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
}

.detail-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.detail-title {
  display: block;
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.detail-val {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-main);
}

.resume-download-box {
  background: rgba(99, 102, 241, 0.1);
  border: 1px dashed var(--accent-primary);
  padding: 1.2rem;
  border-radius: var(--radius-md);
  text-align: center;
}

.resume-download-box h4 {
  font-size: 1.05rem;
  margin-bottom: 0.3rem;
}

.resume-download-box p {
  font-size: 0.8rem;
  margin-bottom: 0.8rem;
}

/* Contact Form */
.form-group {
  margin-bottom: 1.2rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-muted);
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  background: rgba(9, 13, 22, 0.7);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus {
  border-color: var(--accent-cyan);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  padding: 3rem 0;
  background: #060911;
  border-top: 1px solid var(--border-glass);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.footer-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-weight: 400;
  margin-top: 0.3rem;
}

.footer-socials {
  display: flex;
  gap: 1rem;
}

.footer-socials a {
  color: var(--text-muted);
  font-size: 1.2rem;
}

.footer-socials a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* ==========================================================================
   Modal Overlay
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  padding: 1.5rem;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  position: relative;
  width: 100%;
  max-width: 700px;
  max-height: 85vh;
  overflow-y: auto;
  background: #0F1626;
  border-color: var(--accent-cyan);
}

.modal-close {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

.modal-close:hover { color: #FFF; }

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: rgba(16, 185, 129, 0.9);
  color: #FFF;
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  z-index: 3000;
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   Certifications Section (Horizontal Carousel & Single Preview)
   ========================================================================== */
.cert-filter-controls {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.cert-filter-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cert-filter-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  border-color: var(--accent-cyan);
}

.cert-filter-btn.active {
  background: var(--gradient-main);
  color: #FFF;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.cert-carousel-wrapper {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  margin-top: 1rem;
}

.cert-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(15, 22, 38, 0.92);
  border: 1.5px solid var(--accent-cyan);
  color: var(--text-main);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  backdrop-filter: blur(16px);
  transition: all var(--transition-fast);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7), 0 0 20px rgba(6, 182, 212, 0.35);
}

.cert-nav-btn:hover {
  background: var(--gradient-main);
  color: #FFF;
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 0 25px rgba(6, 182, 212, 0.8);
}

.cert-nav-prev {
  left: 20px;
}

.cert-nav-next {
  right: 20px;
}

.certifications-track {
  display: flex;
  gap: 1.8rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 1.2rem 4rem 2.2rem 4rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--accent-cyan) rgba(255, 255, 255, 0.05);
  width: 100%;
}

.certifications-track::-webkit-scrollbar {
  height: 8px;
}

.certifications-track::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-full);
}

.certifications-track::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-cyan));
  border-radius: var(--radius-full);
}

.cert-card {
  flex: 0 0 380px;
  max-width: 380px;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-normal);
  position: relative;
  cursor: pointer;
}

.cert-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-cyan);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6), 0 0 25px rgba(6, 182, 212, 0.25);
}

.cert-thumb-box {
  position: relative;
  width: 100%;
  height: 195px;
  background: #060911;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-glass);
}

.cert-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.4s ease;
}

.cert-card:hover .cert-thumb-img {
  transform: scale(1.05);
}

.cert-badge-floating {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  backdrop-filter: blur(8px);
  z-index: 2;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.badge-iit {
  background: rgba(99, 102, 241, 0.85);
  color: #FFF;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.badge-udemy {
  background: rgba(168, 85, 247, 0.85);
  color: #FFF;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.badge-simplilearn {
  background: rgba(6, 182, 212, 0.85);
  color: #FFF;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.badge-hackerrank {
  background: rgba(16, 185, 129, 0.85);
  color: #FFF;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.cert-body {
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.cert-issuer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.cert-issuer {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cert-date {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-family: var(--font-code);
}

.cert-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 1.2rem;
  color: var(--text-main);
  min-height: 2.7rem;
}

.cert-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
}

.cert-btn-preview {
  width: 100%;
  background: var(--gradient-main);
  color: #FFF;
  padding: 0.7rem 1.2rem;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
}

.cert-btn-preview:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(6, 182, 212, 0.55);
  color: #FFF;
}

/* Certificate Lightbox Modal Specifics */
.cert-lightbox-card {
  max-width: 900px;
  width: 95%;
  height: 88vh;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.cert-lightbox-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
  padding-right: 2rem;
}

.cert-lightbox-title {
  font-size: 1.3rem;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.cert-lightbox-meta {
  font-size: 0.85rem;
  color: var(--accent-cyan);
}

.cert-lightbox-iframe-wrap {
  flex-grow: 1;
  width: 100%;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #000;
  border: 1px solid var(--border-glass);
  position: relative;
}

.cert-lightbox-iframe-wrap iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.cert-lightbox-footer {
  margin-top: 1rem;
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

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

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

  .hero-academic-chips, .hero-cta-group, .hero-socials {
    justify-content: center;
  }

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

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

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

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(9, 13, 22, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transform: translateY(-150%);
    transition: transform var(--transition-normal);
  }

  .nav-links.active {
    transform: translateY(0);
  }

  .mobile-toggle {
    display: block;
  }

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

  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    width: 100%;
    padding-left: 3.5rem !important;
    padding-right: 0 !important;
  }

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

  .timeline-dot {
    left: 0 !important;
  }

  .projects-grid, .skills-grid, .awards-grid, .leadership-grid {
    grid-template-columns: 1fr;
  }

  .cert-nav-btn {
    width: 40px;
    height: 40px;
    font-size: 0.95rem;
  }

  .cert-nav-prev {
    left: 8px;
  }

  .cert-nav-next {
    right: 8px;
  }

  .certifications-track {
    padding: 1rem 1rem 1.8rem 1rem;
    gap: 1.2rem;
  }

  .cert-card {
    flex: 0 0 300px;
    max-width: 300px;
  }
}