/* -------------------------------------------------------------
   SYSTEM DESIGN SYSTEM & GLOBAL STYLES (Tharun R Portfolio)
   Inspired by premium hybrid glassmorphic dashboard aesthetics
   ------------------------------------------------------------- */

:root {
  /* Core Colors */
  --primary: #4452FE;         /* Royal indigo-blue */
  --primary-glow: rgba(68, 82, 254, 0.15);
  --primary-hover: #313fd5;
  --secondary: #06B6D4;       /* Neon cyan */
  --bg-app: #F3F6FD;          /* Soft slate blue-gray base */
  
  /* Palette & Gradients */
  --accent-purple: #8B5CF6;
  --accent-orange: #FF7A00;
  --accent-green: #10B981;
  --accent-pink: #EC4899;
  --text-main: #1E293B;       /* Deep slate */
  --text-muted: #64748B;      /* Cool gray */
  --text-light: #94A3B8;
  
  /* Surface & Glassmorphic variables */
  --surface-base: #FFFFFF;
  --surface-card: rgba(255, 255, 255, 0.85);
  --surface-sidebar: rgba(255, 255, 255, 0.9);
  --border-color: rgba(226, 232, 240, 0.8);
  --border-glow: rgba(68, 82, 254, 0.08);
  
  /* Shadow Systems */
  --shadow-sm: 0 2px 8px rgba(148, 163, 184, 0.05);
  --shadow-md: 0 8px 24px rgba(148, 163, 184, 0.12);
  --shadow-lg: 0 16px 40px rgba(148, 163, 184, 0.18);
  --shadow-glow: 0 8px 30px rgba(68, 82, 254, 0.2);
  
  /* Border Radius */
  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-app);
}

::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #94A3B8;
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

p {
  line-height: 1.6;
  color: var(--text-muted);
}

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

/* Sidebar Navigation */
.sidebar {
  position: fixed;
  left: 24px;
  top: 24px;
  bottom: 24px;
  width: 90px;
  background: var(--surface-sidebar);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0;
  box-shadow: var(--shadow-md);
  z-index: 100;
  transition: width var(--transition-normal), left var(--transition-normal);
}

.sidebar-logo {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #FFFFFF;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.sidebar-logo::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(35deg, transparent, rgba(255,255,255,0.3), transparent);
  transform: rotate(45deg);
  transition: 0.8s;
}

.sidebar:hover .sidebar-logo::after {
  left: 120%;
}

.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  align-items: center;
}

.nav-item {
  position: relative;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: pointer;
  background: transparent;
  transition: var(--transition-normal);
}

.nav-item svg {
  width: 22px;
  height: 22px;
  stroke-width: 2px;
  transition: transform var(--transition-fast);
}

.nav-item .nav-label {
  position: absolute;
  left: 100%;
  margin-left: 20px;
  background: #1E293B; /* Solid slate grey background in light mode */
  color: #FFFFFF;     /* Pure white text */
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-10px);
  transition: var(--transition-fast);
  white-space: nowrap;
  box-shadow: var(--shadow-md);
}

.nav-item .nav-label::before {
  content: '';
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: transparent #1E293B transparent transparent;
}

/* Hover state */
.nav-item:hover {
  color: var(--primary);
  background: var(--primary-glow);
}

.nav-item:hover svg {
  transform: scale(1.1);
}

.nav-item:hover .nav-label {
  opacity: 1;
  transform: translateX(0);
}

/* Active State matching dashboard image style */
.nav-item.active {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: var(--shadow-glow);
}

.sidebar-bottom {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--surface-base);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.social-icon svg {
  width: 18px;
  height: 18px;
}

.social-icon:hover {
  background: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* Main Layout Wrapper */
.main-content {
  margin-left: 138px; /* space for absolute sidebar */
  flex-grow: 1;
  padding: 24px 40px 40px 0;
  display: flex;
  flex-direction: column;
  gap: 32px;
  width: calc(100% - 138px);
}

/* Headers & Navigation Overlay for Mobile */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 70px;
  background: var(--surface-sidebar);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  padding: 0 24px;
  align-items: center;
  justify-content: space-between;
  z-index: 1000;
  box-shadow: none;
  transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.mobile-header.scrolled {
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.mobile-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--text-main);
}

.hamburger {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  z-index: 1002;
}

.hamburger span {
  width: 100%;
  height: 2px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: var(--transition-fast);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.hamburger.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(243, 246, 253, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-normal);
}

.mobile-nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 20px;
  text-align: center;
}

.mobile-nav a {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-muted);
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--primary);
  transform: scale(1.05);
}

/* Page Hero Template */
.page-hero {
  position: relative;
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 60px 48px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.page-hero-bg {
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(68, 82, 254, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.page-hero-content {
  position: relative;
  z-index: 2;
}

.page-tag {
  display: inline-flex;
  padding: 6px 14px;
  background: var(--primary-glow);
  color: var(--primary);
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.page-title {
  font-size: 2.8rem;
  color: var(--text-main);
  margin-bottom: 12px;
}

.page-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 600px;
}

/* Buttons System */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--primary);
  color: #FFFFFF;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-glow);
  transition: var(--transition-fast);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(68, 82, 254, 0.35);
}

.btn-primary svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.btn-primary:hover svg {
  transform: translateX(4px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  background: var(--surface-base);
  color: var(--text-main);
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--bg-app);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  background: transparent;
  color: var(--primary);
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid var(--primary);
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-outline:hover {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

/* Global Grid systems */
.section-inner {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

/* Animations */
.animate-fade-up {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.animate-fade-left {
  opacity: 0;
  transform: translateX(24px);
  animation: fadeLeft 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.animate-fade-right {
  opacity: 0;
  transform: translateX(-24px);
  animation: fadeRight 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeLeft {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeRight {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Common Projects Page & Grid Styles */
.filter-section {
  margin-bottom: 8px;
}

.filter-bar {
  display: flex;
  gap: 12px;
  background: var(--surface-card);
  padding: 8px;
  border-radius: 40px;
  border: 1px solid var(--border-color);
  width: max-content;
  box-shadow: var(--shadow-sm);
}

.filter-btn {
  border: none;
  background: transparent;
  padding: 10px 24px;
  border-radius: 30px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover {
  color: var(--primary);
}

.filter-btn.active {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: var(--shadow-glow);
}

.projects-grid-section {
  padding-bottom: 40px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 30px;
}

.project-card {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(68, 82, 254, 0.15);
}

.project-card-header {
  padding: 30px 30px 20px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  position: relative;
}

.project-card-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary);
}

.project-card-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  background: var(--primary);
}

.project-card-icon svg {
  width: 24px;
  height: 24px;
}

.project-card-badges {
  display: flex;
  gap: 8px;
}

.proj-badge {
  padding: 4px 10px;
  background: rgba(226, 232, 240, 0.6);
  color: var(--text-muted);
  border-radius: 30px;
  font-size: 0.75rem;
  font-weight: 600;
}

.project-card-body {
  padding: 0 30px;
  flex-grow: 1;
}

.project-card-body h3 {
  font-size: 1.4rem;
  color: var(--text-main);
  margin-bottom: 12px;
}

.project-card-body p {
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.project-tech span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  padding: 4px 10px;
  background: var(--bg-app);
  color: var(--primary);
  border-radius: 6px;
  font-weight: 500;
  border: 1px solid rgba(68, 82, 254, 0.05);
}

.project-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.project-bullets li {
  position: relative;
  padding-left: 20px;
}

.project-bullets li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

.project-card-footer {
  padding: 24px 30px 30px;
  border-top: 1px solid var(--border-color);
  background: rgba(248, 250, 252, 0.5);
}

.proj-link {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.proj-link:hover {
  color: var(--primary-hover);
  transform: translateX(4px);
}

/* Gradients for Card Headers */
.indigo-grad::before { background: linear-gradient(90deg, #4452FE, #8B5CF6) !important; }
.cyan-grad::before { background: linear-gradient(90deg, #06B6D4, #0ea5e9) !important; }
.pink-grad::before { background: linear-gradient(90deg, #EC4899, #8B5CF6) !important; }
.green-grad::before { background: linear-gradient(90deg, #10B981, #059669) !important; }
.orange-grad::before { background: linear-gradient(90deg, #FF7A00, #EF4444) !important; }
.purple-grad::before { background: linear-gradient(90deg, #8B5CF6, #EC4899) !important; }

/* Skills Page Specific Styles */
.skills-section {
  padding-bottom: 40px;
}

.skills-categories {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: 30px;
}

.skill-cat {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.skill-cat:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(68, 82, 254, 0.1);
  transform: translateY(-4px);
}

.skill-cat-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.skill-cat-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
}

.skill-cat-icon svg {
  width: 20px;
  height: 20px;
}

.skill-cat-header h2 {
  font-size: 1.35rem;
  color: var(--text-main);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.skill-tag {
  font-size: 0.85rem;
  font-weight: 500;
  padding: 6px 14px;
  background: var(--bg-app);
  color: var(--text-muted);
  border-radius: 30px;
  border: 1px solid var(--border-color);
}

.skill-tag.primary { background: var(--primary-glow); color: var(--primary); border-color: transparent; }
.skill-tag.cyan { background: rgba(6, 182, 212, 0.1); color: var(--secondary); border-color: transparent; }
.skill-tag.orange { background: rgba(255, 122, 0, 0.1); color: var(--accent-orange); border-color: transparent; }
.skill-tag.green { background: rgba(16, 185, 129, 0.1); color: var(--accent-green); border-color: transparent; }
.skill-tag.pink { background: rgba(236, 72, 153, 0.1); color: var(--accent-pink); border-color: transparent; }

.skill-bars {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.skill-bar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.skill-bar-row span {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  width: 140px;
}

.skill-bar {
  flex-grow: 1;
  height: 8px;
  background: var(--bg-app);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.skill-bar-fill {
  height: 100%;
  border-radius: 10px;
  transition: width 1.2s cubic-bezier(0.1, 1, 0.1, 1);
}

.skill-pct {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  text-align: right;
  width: 40px;
}

.soft-skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.soft-skill-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-app);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
  font-weight: 500;
}

.soft-skill-icon {
  font-size: 1.15rem;
}

/* Experience Timeline Common Classes */
.experience-section {
  padding-bottom: 40px;
}

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 31px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  padding-left: 80px;
  margin-bottom: 50px;
}

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

.timeline-dot {
  position: absolute;
  left: 20px;
  top: 24px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--surface-base);
  border: 4px solid var(--border-color);
  z-index: 2;
  box-shadow: var(--shadow-sm);
}

.timeline-connector {
  position: absolute;
  left: 31px;
  top: 48px;
  bottom: -50px;
  width: 2px;
  background: var(--border-color);
  z-index: 1;
}

.indigo-dot { border-color: var(--primary) !important; background: var(--primary-glow) !important; }
.cyan-dot { border-color: var(--secondary) !important; background: rgba(6, 182, 212, 0.1) !important; }
.orange-dot { border-color: var(--accent-orange) !important; background: rgba(255, 122, 0, 0.1) !important; }
.green-dot { border-color: var(--accent-green) !important; background: rgba(16, 185, 129, 0.1) !important; }

.timeline-card {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.timeline-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(68, 82, 254, 0.1);
  transform: translateX(4px);
}

.timeline-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}

.tl-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.company-logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: #FFFFFF;
}

.indigo-logo { background: linear-gradient(135deg, var(--primary), var(--accent-purple)); }
.cyan-logo { background: linear-gradient(135deg, var(--secondary), #0ea5e9); }
.orange-logo { background: linear-gradient(135deg, var(--accent-orange), #EF4444); }
.green-logo { background: linear-gradient(135deg, var(--accent-green), #059669); }

.tl-title-block h3 {
  font-size: 1.25rem;
  color: var(--text-main);
}

.company-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.tl-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
  gap: 6px;
}

.tl-date {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  background: var(--bg-app);
  padding: 4px 12px;
  border-radius: 30px;
  border: 1px solid var(--border-color);
}

.tl-type {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tl-type.remote { color: var(--primary); }
.tl-type.onsite { color: var(--accent-orange); }

.tl-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.tl-skills span {
  font-size: 0.8rem;
  padding: 4px 10px;
  background: var(--bg-app);
  color: var(--text-muted);
  border-radius: 6px;
  font-weight: 500;
}

.tl-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.tl-bullets li {
  position: relative;
  padding-left: 20px;
}

.tl-bullets li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 1.2rem;
  line-height: 1;
}

.edu-cards-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.edu-full-card {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.edu-full-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.edu-card-icon {
  font-size: 2rem;
  display: flex;
  align-items: center;
}

.edu-card-body h3 {
  font-size: 1.15rem;
  color: var(--text-main);
  margin-bottom: 6px;
}

.edu-school-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.edu-detail {
  font-size: 0.85rem;
  color: var(--text-light);
  font-weight: 500;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .sidebar {
    left: -100px; /* Hide sidebar offscreen on tablets/mobiles */
  }
  
  .main-content {
    margin-left: 0;
    padding: 94px 24px 24px;
    width: 100%;
  }
  
  .mobile-header {
    display: flex;
  }
}

@media (max-width: 768px) {
  .page-title {
    font-size: 2.2rem;
  }
  
  .page-hero {
    padding: 40px 24px;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-categories {
    grid-template-columns: 1fr;
  }
}

/* -------------------------------------------------------------
   CONTACT PAGE STYLING (Tharun R Portfolio)
   Form inputs, modern contact links, and green availability status
   ------------------------------------------------------------- */
.contact-section {
  padding-bottom: 40px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-info h2 {
  font-size: 2rem;
  color: var(--text-main);
  line-height: 1.2;
}

.contact-info p {
  font-size: 1.05rem;
  line-height: 1.6;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 10px;
}

.contact-link-card {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.contact-link-card:not(.location-card) {
  cursor: pointer;
}

.contact-link-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  flex-shrink: 0;
}

.contact-link-icon svg {
  width: 20px;
  height: 20px;
}

.contact-link-text {
  flex-grow: 1;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-link-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-link-value {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  word-break: break-all;
}

.ext-icon {
  width: 16px;
  height: 16px;
  color: var(--text-light);
  transition: transform var(--transition-fast);
}

.contact-link-card:hover:not(.location-card) {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(68, 82, 254, 0.1);
}

.contact-link-card:hover .ext-icon {
  transform: translateX(4px);
  color: var(--primary);
}

/* Contact Form wrap */
.contact-form-wrap {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-form-card {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.contact-form-card h3 {
  font-size: 1.5rem;
  color: var(--text-main);
  margin-bottom: 6px;
}

.form-note {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 24px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

.form-group input,
.form-group textarea {
  font-family: inherit;
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-app);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: #FFFFFF;
  box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Availability card */
.availability-card {
  background: rgba(16, 185, 129, 0.04);
  border: 1px solid rgba(16, 185, 129, 0.12);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.avail-dot-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.avail-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-green);
  border-radius: 50%;
  animation: pulseGreen 1.8s infinite;
}

.avail-text {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-green);
}

.availability-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ===================================================
   COMPREHENSIVE MOBILE RESPONSIVE SYSTEM
   =================================================== */

/* Skill Source Tags (replaces percentage bars) */
.skill-sources {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.skill-source-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
}

.skill-source-tag.project {
  background: rgba(68, 82, 254, 0.1);
  color: var(--primary);
  border-color: rgba(68, 82, 254, 0.2);
}

.skill-source-tag.internship {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent-green);
  border-color: rgba(16, 185, 129, 0.2);
}

.skill-source-tag.certification {
  background: rgba(255, 122, 0, 0.1);
  color: var(--accent-orange);
  border-color: rgba(255, 122, 0, 0.2);
}

.skill-source-tag.hackathon {
  background: rgba(236, 72, 153, 0.1);
  color: var(--accent-pink);
  border-color: rgba(236, 72, 153, 0.2);
}

.skill-source-tag.workshop {
  background: rgba(139, 92, 246, 0.1);
  color: var(--accent-purple);
  border-color: rgba(139, 92, 246, 0.2);
}

.skill-source-tag .tag-icon {
  font-size: 0.8rem;
}

.skill-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-color);
}

.skill-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.skill-item-left {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.skill-item-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
}

/* Large Screens */
@media (min-width: 1600px) {
  .skills-categories {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Tablet and below */
@media (max-width: 1024px) {
  .main-content {
    margin-left: 120px;
    width: calc(100% - 120px);
    padding: 20px 24px 40px 0;
  }

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

  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }
}

/* Mobile - 768px and below */
@media (max-width: 768px) {
  /* Show mobile header, hide desktop sidebar */
  .sidebar {
    display: none !important;
  }

  .mobile-header {
    display: flex !important;
  }

  /* Reset main content for mobile */
  .main-content {
    margin-left: 0 !important;
    width: 100% !important;
    padding: 88px 16px 40px 16px !important;
    gap: 20px;
  }

  /* Page hero padding */
  .page-hero {
    padding: 36px 24px;
  }

  .page-title {
    font-size: 2rem;
  }

  .page-subtitle {
    font-size: 1rem;
  }

  /* Section inner */
  .section-inner {
    padding: 0;
  }

  /* Skills grid - single column on mobile */
  .skills-categories {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .skill-cat {
    padding: 22px;
  }

  /* Projects - single column */
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* Filter bar - scrollable on mobile */
  .filter-bar {
    width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
    border-radius: 16px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .filter-bar::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    padding: 8px 18px;
    font-size: 0.85rem;
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* Timeline - reduce padding */
  .timeline-item {
    padding-left: 60px;
    margin-bottom: 36px;
  }

  .timeline::before {
    left: 23px;
  }

  .timeline-dot {
    left: 12px;
    width: 20px;
    height: 20px;
  }

  .timeline-connector {
    left: 22px;
  }

  .timeline-card {
    padding: 20px;
  }

  .timeline-card-header {
    flex-direction: column;
    gap: 12px;
  }

  .tl-meta {
    display: flex;
    gap: 8px;
  }

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

  /* Edu cards */
  .edu-cards-row {
    flex-direction: column;
    gap: 16px;
  }

  /* About grid */
  .about-grid {
    grid-template-columns: 1fr !important;
    gap: 24px;
  }

  /* Achievements grid */
  .achievements-grid {
    grid-template-columns: 1fr !important;
  }

  /* Certs grid */
  .certs-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 12px;
  }

  /* Soft skills grid */
  .soft-skills-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  /* Section headers */
  .section-title {
    font-size: 1.6rem;
  }

  /* Skill sources wrap properly */
  .skill-sources {
    gap: 6px;
  }

  .skill-source-tag {
    font-size: 0.7rem;
    padding: 4px 10px;
  }

  /* Project card adjustments */
  .project-card-header {
    padding: 20px 20px 14px;
  }

  .project-card-body {
    padding: 0 20px;
  }

  .project-card-footer {
    padding: 18px 20px 20px;
  }

  .project-card-badges {
    flex-wrap: wrap;
  }
}

/* Extra small phones */
@media (max-width: 480px) {
  .main-content {
    padding: 80px 12px 32px 12px !important;
  }

  .page-hero {
    padding: 28px 18px;
  }

  .page-title {
    font-size: 1.75rem;
  }

  .skill-cat {
    padding: 18px;
  }

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

  .cert-card {
    padding: 16px !important;
  }

  .project-card-icon {
    width: 40px;
    height: 40px;
  }

  .project-card-body h3 {
    font-size: 1.2rem;
  }
}

/* -------------------------------------------------------------
   DARK THEME SYSTEM & ACCENT OVERRIDES
   ------------------------------------------------------------- */
body.dark-mode {
  --bg-app: #080D1A;          /* Deep space slate base */
  
  --text-main: #F1F5F9;       /* Highly visible off-white */
  --text-muted: #94A3B8;      /* Soft grayish slate */
  --text-light: #475569;      /* Darker slate grey */
  
  --surface-base: #0F172A;    /* Slate 900 */
  --surface-card: rgba(15, 23, 42, 0.75); /* Dark semi-transparent card */
  --surface-sidebar: rgba(15, 23, 42, 0.85); /* Dark sidebar */
  --border-color: rgba(51, 65, 85, 0.5); /* Slate 700 border */
  --border-glow: rgba(68, 82, 254, 0.18);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55);
}

/* Tooltip dark mode override to prevent white-on-white text */
body.dark-mode .nav-item .nav-label {
  background: #FFFFFF; /* Pure white background in dark mode */
  color: #0F172A;     /* Deep slate slate text */
}
body.dark-mode .nav-item .nav-label::before {
  border-color: transparent #FFFFFF transparent transparent;
}

/* Scrollbar adjustment in dark mode */
body.dark-mode ::-webkit-scrollbar-track {
  background: var(--bg-app);
}
body.dark-mode ::-webkit-scrollbar-thumb {
  background: #334155;
}
body.dark-mode ::-webkit-scrollbar-thumb:hover {
  background: #475569;
}

/* Theme Toggle Button Styles */
.theme-toggle-btn {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
  margin: 10px auto 0;
  outline: none;
  box-shadow: var(--shadow-sm);
}

.theme-toggle-btn:hover {
  background: var(--primary-glow);
  color: var(--primary);
  border-color: rgba(68, 82, 254, 0.25);
  transform: translateY(-2px);
}

/* Toggle icon display based on theme */
body.dark-mode .theme-toggle-btn .sun-icon {
  display: block;
}
body.dark-mode .theme-toggle-btn .moon-icon {
  display: none;
}
body:not(.dark-mode) .theme-toggle-btn .sun-icon {
  display: none;
}
body:not(.dark-mode) .theme-toggle-btn .moon-icon {
  display: block;
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  stroke-width: 2.2px;
  stroke: currentColor;
}

/* Mobile top actions container */
.mobile-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-theme-toggle {
  margin: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.mobile-theme-toggle svg {
  width: 18px;
  height: 18px;
}

/* Projects Page Layout with Sidebar */
.projects-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 30px;
  align-items: start;
}

.projects-main {
  min-width: 0;
}

.projects-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-title {
  font-size: 1.4rem;
  color: var(--text-main);
  padding-bottom: 12px;
  margin-bottom: 8px;
  border-bottom: 2px solid var(--primary);
}

.deployed-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.deployed-item {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.deployed-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(68, 82, 254, 0.15);
}

.deployed-link {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.95rem;
  margin-bottom: 8px;
  word-break: break-all;
}

.deployed-link:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

.deployed-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 10px;
}

.deployed-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.deployed-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  padding: 2px 8px;
  background: var(--bg-app);
  color: var(--text-muted);
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

@media (max-width: 1024px) {
  .projects-layout {
    grid-template-columns: 1fr;
  }
  .projects-sidebar {
    position: static;
  }
}