/* ==========================================================================
   THOTA SAI VARDHAN - DEVELOPER ECOSYSTEM STYLES
   Theme: High-Performance Cyber Blue & Obsidian Black
   ========================================================================== */

:root {
  --bg-primary: #07090e;
  --bg-secondary: #0d121d;
  --bg-card: rgba(15, 23, 42, 0.65);
  --bg-card-hover: rgba(22, 33, 58, 0.85);
  
  --border-subtle: rgba(56, 189, 248, 0.12);
  --border-active: rgba(56, 189, 248, 0.35);
  --border-glow: rgba(56, 189, 248, 0.6);

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-cyan: #38bdf8;
  --accent-blue: #2563eb;
  --accent-teal: #14b8a6;
  --accent-indigo: #6366f1;
  --accent-green: #10b981;
  --accent-yellow: #f59e0b;
  --accent-red: #ef4444;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

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

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Background Glowing Orbs */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}
.orb-1 {
  width: 500px;
  height: 500px;
  top: -100px;
  left: -150px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.12) 0%, rgba(37, 99, 235, 0.05) 70%, transparent 100%);
}
.orb-2 {
  width: 600px;
  height: 600px;
  top: 40%;
  right: -200px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, rgba(56, 189, 248, 0.04) 70%, transparent 100%);
}
.orb-3 {
  width: 550px;
  height: 550px;
  bottom: 5%;
  left: 10%;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.08) 0%, transparent 70%);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* Glassmorphism Panel */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  transition: border-color var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-normal);
}
.glass-panel:hover {
  border-color: var(--border-active);
  box-shadow: 0 16px 40px -10px rgba(56, 189, 248, 0.08);
}

/* Typography Utilities */
.text-gradient {
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.text-highlight {
  color: var(--accent-cyan);
}
.text-cyan { color: var(--accent-cyan); }
.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 9, 14, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.85rem 0;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: -0.5px;
}
.logo-bracket {
  color: var(--accent-cyan);
}
.logo-dot {
  color: var(--accent-indigo);
}
.logo-ext {
  color: var(--accent-cyan);
  font-weight: 700;
}

.nav-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
}
.pulse-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulseGlow 2s infinite;
}
@keyframes pulseGlow {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}
.status-text {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-green);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}
.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}
.nav-link:hover {
  color: var(--accent-cyan);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.social-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  transition: all var(--transition-fast);
}
.social-icon-btn:hover {
  color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.1);
  border-color: var(--border-active);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.3);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1 0%, #1d4ed8 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
}
.btn-secondary {
  background: rgba(30, 41, 59, 0.8);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
}
.btn-secondary:hover {
  background: rgba(51, 65, 85, 0.8);
  border-color: var(--border-active);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--accent-cyan);
}
.btn-outline:hover {
  background: rgba(56, 189, 248, 0.08);
  border-color: var(--accent-cyan);
  color: #fff;
}

/* Hero Section */
.hero-section {
  padding: 5rem 0 3.5rem;
}
.hero-container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.8px;
  color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.5rem;
}
.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
}
.hero-title {
  font-size: clamp(2.3rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.2px;
  max-width: 900px;
  margin-bottom: 1.5rem;
}
.hero-lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 780px;
  line-height: 1.65;
  margin-bottom: 2.25rem;
}
.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

/* Telemetry Grid */
.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  width: 100%;
}
.telemetry-card {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  backdrop-filter: blur(8px);
}
.telemetry-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-cyan);
  line-height: 1;
  margin-bottom: 0.35rem;
}
.telemetry-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Section Shared */
.section {
  padding: 5rem 0;
}
.section-header {
  margin-bottom: 3rem;
  max-width: 700px;
}
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-cyan);
  letter-spacing: 1.2px;
  margin-bottom: 0.5rem;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.6px;
  margin-bottom: 0.75rem;
}
.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
}

/* About Grid */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.about-card {
  padding: 2rem;
}
.about-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}
.about-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.about-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Projects Stack (Ecosystem) */
.projects-stack {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.project-card {
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}
.tier-indicator {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.tier-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-full);
}
.tier-advanced {
  background: rgba(99, 102, 241, 0.15);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.35);
}
.tier-intermediate {
  background: rgba(20, 184, 166, 0.15);
  color: #5eead4;
  border: 1px solid rgba(20, 184, 166, 0.35);
}
.tier-foundational {
  background: rgba(56, 189, 248, 0.15);
  color: #7dd3fc;
  border: 1px solid rgba(56, 189, 248, 0.35);
}
.version-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.project-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.4px;
  margin-bottom: 0.35rem;
}
.project-tagline {
  color: var(--accent-cyan);
  font-weight: 500;
  font-size: 1.05rem;
  margin-bottom: 1rem;
}
.project-description {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  max-width: 900px;
}

.project-highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.75rem;
  background: rgba(10, 14, 23, 0.6);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.04);
}
.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-main);
}
.check-icon {
  color: var(--accent-green);
  font-weight: bold;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}
.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: #cbd5e1;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-sm);
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* Terminal Section */
.terminal-window {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
}
.terminal-titlebar {
  background: #090d16;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}
.terminal-dots {
  display: flex;
  gap: 0.45rem;
}
.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
}
.terminal-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-green);
  background: rgba(16, 185, 129, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
}

.terminal-body {
  background: #06080e;
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  min-height: 340px;
  max-height: 480px;
  overflow-y: auto;
  line-height: 1.55;
}
.terminal-line {
  margin-bottom: 0.4rem;
}
.term-cyan { color: var(--accent-cyan); }
.term-green { color: var(--accent-green); }
.term-yellow { color: var(--accent-yellow); }
.term-red { color: var(--accent-red); }

.terminal-output {
  margin: 0.75rem 0;
}
.term-block {
  margin-bottom: 0.75rem;
}

.terminal-input-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.5rem;
}
.prompt-user {
  color: var(--accent-green);
  font-weight: 600;
}
.prompt-sep {
  color: var(--text-dim);
}
.prompt-path {
  color: var(--accent-cyan);
}
.prompt-char {
  color: var(--accent-yellow);
}
#terminal-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  outline: none;
}

.terminal-quick-actions {
  background: #090d16;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.quick-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-right: 0.25rem;
}
.quick-cmd-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.quick-cmd-btn:hover {
  background: rgba(56, 189, 248, 0.1);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.skill-category {
  padding: 1.75rem;
}
.cat-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.75rem;
}
.cat-icon {
  font-size: 1.5rem;
}
.cat-header h3 {
  font-size: 1.15rem;
  font-weight: 600;
}
.skill-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.skill-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
}
.skill-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.08);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
}

/* Education & Certifications */
.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
@media (max-width: 860px) {
  .edu-grid { grid-template-columns: 1fr; }
}
.edu-card {
  padding: 2rem;
  display: flex;
  gap: 1.5rem;
}
.edu-icon {
  font-size: 2.25rem;
}
.edu-period {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-cyan);
  font-weight: 600;
  display: block;
  margin-bottom: 0.35rem;
}
.edu-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}
.edu-inst {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: 0.85rem;
}
.edu-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.cert-panel {
  padding: 2rem;
}
.cert-panel h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}
.cert-grid {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.cert-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: rgba(10, 14, 23, 0.5);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.04);
}
.cert-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
}
.cert-issuer {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Contact Section */
.contact-card {
  padding: 3.5rem 2.5rem;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.8) 0%, rgba(23, 37, 84, 0.4) 100%);
}
.contact-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.6px;
  margin-bottom: 1rem;
}
.contact-desc {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 700px;
  line-height: 1.6;
  margin-bottom: 2rem;
}
.contact-channels {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}
.channel-item {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background: rgba(10, 14, 23, 0.6);
  border: 1px solid var(--border-subtle);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}
.channel-item:hover {
  background: rgba(56, 189, 248, 0.1);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}
.contact-cta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.modal-overlay.active {
  display: flex;
}
.modal-card {
  max-width: 700px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 2rem;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.75rem;
}
.modal-close {
  background: none;
  border: none;
  font-size: 1.75rem;
  color: var(--text-dim);
  cursor: pointer;
  line-height: 1;
}
.modal-close:hover {
  color: #fff;
}
.arch-diagram {
  background: #080b12;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: #a5f3fc;
  overflow-x: auto;
  white-space: pre;
  margin-bottom: 1.25rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-subtle);
  background: #05070a;
  padding: 2rem 0;
  font-size: 0.85rem;
  color: var(--text-dim);
}
.footer-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-status { display: none; }
  .hero-section { padding: 3rem 0 2rem; }
  .project-card { padding: 1.5rem; }
  .contact-card { padding: 2rem 1.5rem; }
}

/* Journey / Timeline Section */
.timeline-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
}
.timeline-item {
  padding: 2rem;
  position: relative;
  transition: all var(--transition-normal);
}
.timeline-item:hover {
  transform: translateX(4px);
  border-color: var(--border-active);
}
.timeline-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  display: inline-block;
  margin-bottom: 0.85rem;
}
.badge-accent {
  color: #a5b4fc;
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.35);
}
.highlight-year {
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 10px 30px -10px rgba(99, 102, 241, 0.15);
}
.timeline-item h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.timeline-summary {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
  max-width: 900px;
}
.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}