/* 
  =========================================
  Devanshu Khurma Portfolio - Design System
  =========================================
*/

/* Fonts & Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --bg-primary: #f8fafc;        /* Slate 50 */
  --bg-secondary: #ffffff;      /* Pure white */
  --text-primary: #0f172a;      /* Slate 900 */
  --text-secondary: #475569;    /* Slate 600 */
  --text-muted: #64748b;        /* Slate 500 */
  
  /* Blue Accents */
  --accent-primary: #2563eb;    /* Royal Blue 600 */
  --accent-hover: #1d4ed8;      /* Sapphire Blue 700 */
  --accent-light: #eff6ff;      /* Light Sky Blue 50 */
  --accent-glow: rgba(37, 99, 235, 0.15);
  --accent-teal: #0ea5e9;       /* Sky Blue 500 */
  
  /* Design Tokens */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: 'Plus Jakarta Sans', var(--font-sans);
  
  --border-color: rgba(226, 232, 240, 0.8); /* Slate 200 light border */
  --border-focus: rgba(37, 99, 235, 0.4);
  
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px 0 rgba(15, 23, 42, 0.04);
  --card-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.06);
  --card-shadow-hover: 0 20px 40px -15px rgba(15, 23, 42, 0.12);
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  
  --sidebar-width: 280px;
  --header-height: 70px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 2rem;
  font-size: 105%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

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

button {
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

ul {
  list-style: none;
}

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

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 5px;
  border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Selection Highlight */
::selection {
  background-color: rgba(37, 99, 235, 0.15);
  color: var(--accent-primary);
}

/* Layout Wrapper */
.app-container {
  display: flex;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 0 4rem;
  max-width: 1200px;
  width: calc(100% - var(--sidebar-width));
}

/* Section Common Styles */
section {
  padding: 6.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

section:last-of-type {
  border-bottom: none;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 3rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.section-title::after {
  content: '';
  display: block;
  height: 1px;
  flex-grow: 1;
  background: var(--border-color);
  max-width: 250px;
}

/* Glassmorphism Styles */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 1rem;
}

/* Elegant Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 0.5rem;
  transition: var(--transition-smooth);
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: var(--bg-secondary);
  box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
}

.btn-secondary:hover {
  background-color: var(--bg-primary);
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

/* =========================================
   Fixed Side Navigation (Desktop)
   ========================================= */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 3rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  z-index: 99;
}

.logo-area {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.logo-name {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
}

.logo-sub {
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--accent-primary);
  letter-spacing: 0.01em;
}

.nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 4rem 0;
}

.nav-item {
  display: flex;
  align-items: center;
}

.nav-link {
  display: flex;
  align-items: center;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.6rem 0;
  position: relative;
  width: 100%;
}

.nav-link::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 50%;
  transform: translateY(-50%) scaleX(0);
  transform-origin: left;
  width: 12px;
  height: 2px;
  background-color: var(--accent-primary);
  transition: var(--transition-spring);
}

.nav-link:hover, 
.nav-link.active {
  color: var(--accent-primary);
  font-weight: 600;
  padding-left: 0.5rem;
}

.nav-link.active::before {
  transform: translateY(-50%) scaleX(1);
}

.sidebar-footer {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* =========================================
   Fixed Social Sidebar
   ========================================= */
.social-sidebar {
  position: fixed;
  bottom: 3rem;
  right: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  z-index: 100;
}

.social-icon-link {
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  color: var(--text-secondary);
  transition: var(--transition-spring);
}

.social-icon-link:hover {
  transform: translateY(-4px);
  color: var(--bg-secondary);
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25);
}

.social-icon-link svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: currentColor;
}

/* =========================================
   Hero Section
   ========================================= */
.hero-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: 4rem 0;
}

/* Mesh Gradient Backdrop effect */
.hero-wrapper::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -5%;
  width: 50vw;
  height: 50vw;
  max-width: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, rgba(248, 250, 252, 0) 70%);
  z-index: -1;
  pointer-events: none;
}

.hero-tag {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  line-height: 1.4;
}

.hero-tag-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-primary);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.85); box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(37, 99, 235, 0); }
  100% { transform: scale(0.85); box-shadow: 0 0 0 0 rgba(37, 99, 235, 0); }
}

.hero-name {
  font-size: 4.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: 1.05;
}

/* Sliding Roles */
.role-container {
  height: 3rem;
  overflow: hidden;
  margin-bottom: 2rem;
}

.role-slider {
  display: flex;
  flex-direction: column;
  animation: slide-roles 12s cubic-bezier(0.76, 0, 0.24, 1) infinite;
}

.role-text {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-secondary);
  height: 3rem;
  line-height: 3rem;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, var(--accent-primary) 0%, var(--accent-teal) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

@keyframes slide-roles {
  0%, 20% { transform: translateY(0); }
  25%, 45% { transform: translateY(-3rem); }
  50%, 70% { transform: translateY(-6rem); }
  75%, 95% { transform: translateY(-9rem); }
  100% { transform: translateY(0); }
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin-bottom: 3rem;
}

.hero-description strong {
  color: var(--text-primary);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 1rem;
}

/* =========================================
   About & Skills Section
   ========================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 4rem;
  margin-bottom: 5rem;
  align-items: center;
}

.about-text p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.about-text p strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Profile Image Styling */
.profile-image-container {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
}

.profile-card {
  width: 100%;
  height: 100%;
  border-radius: 1.5rem;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  transition: var(--transition-spring);
  position: relative;
  z-index: 2;
  overflow: hidden;
}

.profile-image-wrapper {
  width: 100%;
  height: 100%;
  border-radius: 1rem;
  overflow: hidden;
}

.profile-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

/* Glass offset frame */
.profile-card-back {
  position: absolute;
  top: 15px;
  left: 15px;
  right: -15px;
  bottom: -15px;
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-teal) 100%);
  opacity: 0.15;
  border-radius: 1.5rem;
  z-index: 1;
  transition: var(--transition-spring);
}

.profile-image-container:hover .profile-card {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--card-shadow-hover);
}

.profile-image-container:hover .profile-card img {
  transform: scale(1.05);
}

.profile-image-container:hover .profile-card-back {
  transform: translate(8px, 8px);
}

/* Skills Layout */
.skills-title {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  color: var(--text-primary);
}

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

.skills-category {
  padding: 1.75rem;
  border-radius: 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.skills-category:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.2);
  box-shadow: var(--card-shadow);
}

.skills-category-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.skills-category-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.5rem;
  background-color: var(--accent-light);
  color: var(--accent-primary);
}

.skills-category-icon svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: currentColor;
}

.skills-category-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.skills-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-chip {
  padding: 0.4rem 0.8rem;
  font-size: 0.825rem;
  font-weight: 500;
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 2rem;
  transition: var(--transition-smooth);
}

.skills-category:hover .skill-chip {
  background-color: var(--bg-secondary);
  border-color: #cbd5e1;
}

.skill-chip:hover {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  background-color: var(--accent-light) !important;
}

/* =========================================
   Experience Section (Tabbed Layout)
   ========================================= */
.experience-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 4rem;
}

.experience-tabs {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-left: 2px solid var(--border-color);
  padding-left: 0;
  height: fit-content;
}

.tab-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1rem 1.5rem;
  border-left: 2px solid transparent;
  margin-left: -2px;
  text-align: left;
  transition: var(--transition-smooth);
  width: 100%;
}

.tab-company {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
}

.tab-duration {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.tab-btn:hover {
  background-color: var(--accent-light);
  color: var(--accent-primary);
}

.tab-btn:hover .tab-company {
  color: var(--accent-primary);
}

.tab-btn.active {
  border-left-color: var(--accent-primary);
  background-color: var(--accent-light);
  color: var(--accent-primary);
}

.tab-btn.active .tab-company {
  color: var(--accent-primary);
  font-weight: 800;
}

/* Experience Content Pane */
.experience-content {
  position: relative;
  min-height: 400px;
}

.experience-pane {
  display: none;
  animation: fade-slide-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.experience-pane.active {
  display: block;
}

@keyframes fade-slide-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.exp-role-title {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.exp-role-title span {
  color: var(--accent-primary);
}

.exp-duration {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 2rem;
}

.exp-impact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.impact-card {
  padding: 1.25rem;
  border-radius: 0.75rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  text-align: center;
}

.impact-value {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-primary);
  line-height: 1.2;
}

.impact-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.35rem;
  font-weight: 500;
}

.exp-bullets {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.exp-bullet {
  position: relative;
  padding-left: 1.75rem;
  color: var(--text-secondary);
  font-size: 0.975rem;
}

.exp-bullet::before {
  content: '';
  position: absolute;
  left: 0.25rem;
  top: 0.6rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-primary);
}

.exp-bullet strong {
  color: var(--text-primary);
}

.exp-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.exp-tech-label {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-right: 0.5rem;
}

.exp-tech-tag {
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  background-color: var(--bg-secondary);
  color: var(--accent-primary);
  border: 1px solid rgba(37, 99, 235, 0.15);
  border-radius: 4px;
}

/* =========================================
   Projects Section
   ========================================= */
.projects-featured {
  display: flex;
  flex-direction: column;
  gap: 5rem;
  margin-bottom: 6rem;
}

/* Alternating Featured Projects */
.project-card-featured {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.project-card-featured:nth-child(even) {
  grid-template-columns: 1fr 1.1fr;
}

.project-card-featured:nth-child(even) .project-featured-image {
  order: 2;
}

.project-card-featured:nth-child(even) .project-featured-info {
  order: 1;
}

.project-featured-image {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  border-radius: 1.25rem;
  background: linear-gradient(135deg, var(--accent-glow) 0%, rgba(14, 165, 233, 0.05) 100%);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mock UI Graphics inside Image Box */
.project-graphic-mock {
  width: 85%;
  height: 80%;
  background-color: var(--bg-secondary);
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.08);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-spring);
}

.project-card-featured:hover .project-graphic-mock {
  transform: translateY(-8px) scale(1.02);
}

.mock-window-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.mock-window-dots {
  display: flex;
  gap: 6px;
}

.mock-window-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #cbd5e1;
}

.mock-window-dot:nth-child(1) { background-color: #fca5a5; }
.mock-window-dot:nth-child(2) { background-color: #fef08a; }
.mock-window-dot:nth-child(3) { background-color: #bbf7d0; }

.mock-window-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-weight: 500;
}

.mock-window-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem 0;
}

.mock-line {
  height: 8px;
  background-color: #f1f5f9;
  border-radius: 4px;
  width: 100%;
}

.mock-line.short {
  width: 60%;
}

.mock-chart {
  height: 50px;
  background: linear-gradient(90deg, rgba(37,99,235,0.05) 0%, rgba(14,165,233,0.08) 100%);
  border-left: 2px solid var(--accent-primary);
  border-radius: 4px;
  display: flex;
  align-items: flex-end;
  padding: 4px;
  gap: 4px;
}

.mock-chart-bar {
  flex-grow: 1;
  background-color: rgba(37, 99, 235, 0.4);
  border-radius: 2px 2px 0 0;
  transition: var(--transition-spring);
}

.project-card-featured:hover .mock-chart-bar {
  background-color: var(--accent-primary);
}

.mock-chart-bar:nth-child(1) { height: 30%; }
.mock-chart-bar:nth-child(2) { height: 45%; }
.mock-chart-bar:nth-child(3) { height: 35%; }
.mock-chart-bar:nth-child(4) { height: 75%; }
.mock-chart-bar:nth-child(5) { height: 55%; }
.mock-chart-bar:nth-child(6) { height: 90%; }

.project-featured-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.project-featured-label {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.project-featured-title {
  font-size: 1.75rem;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.project-featured-desc {
  font-size: 0.975rem;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
  line-height: 1.6;
}

.project-featured-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.project-tag {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 500;
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
}

/* Secondary Grid of Placeholder Projects */
.projects-grid-title {
  font-size: 1.5rem;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--text-primary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.project-card-grid {
  padding: 2.25rem 2rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 320px;
  transition: var(--transition-spring);
}

.project-card-grid:hover {
  transform: translateY(-8px);
  border-color: rgba(37, 99, 235, 0.2);
  box-shadow: var(--card-shadow-hover);
}

.project-grid-top {
  margin-bottom: 2rem;
}

.project-grid-icon-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--accent-primary);
  margin-bottom: 1.5rem;
}

.project-grid-folder-icon svg {
  width: 2.25rem;
  height: 2.25rem;
  fill: currentColor;
  opacity: 0.8;
}

.project-grid-link svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: currentColor;
  color: var(--text-muted);
  transition: var(--transition-smooth);
}

.project-card-grid:hover .project-grid-link svg {
  color: var(--accent-primary);
  transform: translateY(-2px) translateX(2px);
}

.project-grid-title-text {
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.project-grid-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

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

.project-grid-tag {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}

.project-grid-tag::after {
  content: '•';
  margin-left: 0.4rem;
}

.project-grid-tag:last-child::after {
  content: '';
}

/* =========================================
   Contact Section
   ========================================= */
.contact-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  padding: 4rem 3rem;
  border-radius: 1.5rem;
}

.contact-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.contact-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  line-height: 1.6;
}

/* Styled Copy Email Bar */
.copy-email-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.5rem 0.5rem 1.5rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 50rem;
  width: 100%;
  max-width: 460px;
  box-shadow: var(--card-shadow);
  margin-bottom: 4rem;
  transition: var(--transition-smooth);
}

.copy-email-bar:hover {
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: var(--card-shadow-hover);
}

.email-address-text {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  user-select: all;
}

.copy-btn {
  background-color: var(--accent-primary);
  color: var(--bg-secondary);
  padding: 0.65rem 1.5rem;
  border-radius: 50rem;
  font-size: 0.875rem;
  font-weight: 600;
  transition: var(--transition-spring);
}

.copy-btn:hover {
  background-color: var(--accent-hover);
  transform: scale(1.02);
}

.copy-btn.copied {
  background-color: #10b981; /* Emerald Green */
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
}

/* Inline Footer */
.footer-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 2rem;
}

/* =========================================
   Mobile Navigation Menu (Mobile Header)
   ========================================= */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 1.5rem;
  align-items: center;
  justify-content: space-between;
  z-index: 100;
}

.mobile-logo {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.hamburger-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2rem;
  height: 2rem;
  color: var(--text-primary);
}

.hamburger-line {
  display: block;
  width: 1.5rem;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  transition: var(--transition-smooth);
}

.hamburger-btn.active .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.hamburger-btn.active .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(248, 250, 252, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 98;
  padding: 3rem 2rem;
  flex-direction: column;
  justify-content: space-between;
  animation: slide-overlay 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.mobile-menu-overlay.active {
  display: flex;
}

@keyframes slide-overlay {
  from {
    transform: translateY(-10px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mobile-nav-link {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.mobile-nav-link.active {
  color: var(--accent-primary);
}

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

/* =========================================
   Media Queries & Responsive Styling
   ========================================= */

/* Large Tablets & Desktop Boundaries */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 0px;
  }
  
  .sidebar {
    display: none; /* Hide sidebar nav */
  }
  
  .mobile-header {
    display: flex; /* Show mobile header bar */
  }
  
  .main-content {
    margin-left: 0;
    width: 100%;
    padding: 0 2rem;
  }
  
  .hero-wrapper {
    padding-top: calc(var(--header-height) + 2rem);
  }
  
  .social-sidebar {
    display: none; /* Hide floating social links */
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .profile-image-container {
    max-width: 320px;
    margin: 0 auto;
  }
  
  .experience-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .experience-tabs {
    flex-direction: row;
    overflow-x: auto;
    border-left: none;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0px;
    margin-bottom: 0px;
    -webkit-overflow-scrolling: touch;
  }
  
  .tab-btn {
    border-left: none;
    border-bottom: 2px solid transparent;
    margin-left: 0;
    margin-bottom: -2px;
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    white-space: nowrap;
    width: auto;
  }
  
  .tab-btn.active {
    border-bottom-color: var(--accent-primary);
  }
  
  .tab-duration {
    margin-top: 0;
    font-size: 0.7rem;
  }
  
  .tab-duration::before {
    content: '(';
  }
  
  .tab-duration::after {
    content: ')';
  }
  
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Tablets & Small Screens */
@media (max-width: 768px) {
  .hero-name {
    font-size: 3.25rem;
  }
  
  .role-text {
    font-size: 1.75rem;
  }
  
  .section-title {
    font-size: 1.85rem;
  }
  
  .skills-wrapper {
    grid-template-columns: 1fr;
  }
  
  .exp-impact-cards {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .project-card-featured {
    grid-template-columns: 1fr !important;
    gap: 2rem;
  }
  
  .project-card-featured:nth-child(even) .project-featured-image {
    order: 1;
  }
  
  .project-card-featured:nth-child(even) .project-featured-info {
    order: 2;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-container {
    padding: 2.5rem 1.5rem;
  }
  
  .copy-email-bar {
    flex-direction: column;
    gap: 1.25rem;
    border-radius: 1rem;
    padding: 1.5rem;
  }
  
  .copy-btn {
    width: 100%;
    border-radius: 0.5rem;
  }
}

/* Tiny Screens */
@media (max-width: 480px) {
  .hero-name {
    font-size: 2.5rem;
  }
  
  .role-text {
    font-size: 1.35rem; /* Prevents overflow of Forward Deployed Data Scientist on tiny viewports */
  }
  
  .hero-actions {
    flex-direction: column;
    gap: 0.75rem;
  }
  
  .btn {
    width: 100%;
  }
}

/* =========================================
   Tab Logo & Education Card Layouts
   ========================================= */
.tab-btn-content {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
}

.tab-btn-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.tab-logo {
  width: 2rem;
  height: 2rem;
  border-radius: 6px;
  object-fit: contain;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 2px;
  transition: var(--transition-smooth);
  flex-shrink: 0;
}

.tab-btn:hover .tab-logo,
.tab-btn.active .tab-logo {
  border-color: var(--accent-primary);
}

.education-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.education-card {
  padding: 2.25rem 2rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-spring);
}

.education-card:hover {
  transform: translateY(-6px);
  border-color: rgba(37, 99, 235, 0.2);
  box-shadow: var(--card-shadow-hover);
}

.edu-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.edu-logo {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 8px;
  object-fit: contain;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 4px;
}

.edu-school {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}

.edu-degree {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 0.25rem;
}

.edu-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.edu-details {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

@media (max-width: 1024px) {
  .education-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .education-grid {
    grid-template-columns: 1fr;
  }
}

.project-img-local {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 5;
  transition: var(--transition-spring);
}

.project-card-featured:hover .project-img-local {
  transform: scale(1.04);
}

/* =========================================
   Interests & Pursuits Section
   ========================================= */
.interests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.interest-card {
  padding: 2.25rem 2rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 1.25rem;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-spring);
  min-height: 420px;
}

.interest-card:hover {
  transform: translateY(-8px);
  border-color: rgba(37, 99, 235, 0.2);
  box-shadow: var(--card-shadow-hover);
}

.interest-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.interest-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background-color: var(--accent-light);
  color: var(--accent-primary);
  flex-shrink: 0;
  transition: var(--transition-spring);
}

.interest-card:hover .interest-icon {
  transform: scale(1.1) rotate(5deg);
  background-color: var(--accent-primary);
  color: var(--bg-secondary);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.2);
}

.interest-icon svg {
  width: 1.35rem;
  height: 1.35rem;
  fill: currentColor;
}

.interest-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

.interest-blurb {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.interest-image-wrapper {
  position: relative;
  width: 100%;
  height: 180px;
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  margin-top: auto;
  cursor: zoom-in;
}

.interest-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 2;
  transition: var(--transition-spring);
}

.interest-image-wrapper:hover img {
  transform: scale(1.05);
}

.interest-image-wrapper img.rotated-landscape {
  transform: rotate(90deg) scale(1.4);
}

.interest-image-wrapper:hover img.rotated-landscape {
  transform: rotate(90deg) scale(1.47);
}

.interest-image-fallback {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.03) 0%, rgba(14, 165, 233, 0.06) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  opacity: 0.8;
  z-index: 1;
}

.interest-image-fallback svg {
  width: 1.75rem;
  height: 1.75rem;
  fill: currentColor;
  opacity: 0.45;
  transition: var(--transition-smooth);
}

.interest-image-wrapper:hover .interest-image-fallback svg {
  opacity: 0.8;
  transform: scale(1.2);
}