/* ========================================
   MODERN PORTFOLIO - HARSHA P
   Premium Design with Dark/Light Mode
======================================== */

/* ========== CSS VARIABLES ========== */
:root {
  /* Primary Colors */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --accent-color: #f59e0b;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #fccb90 0%, #d57eeb 100%);
  --gradient-success: linear-gradient(135deg, #84fab0 0%, #8fd3f4 100%);
  
  /* Light Mode Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;
  --border-color: #e5e7eb;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Glass Effect */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.18);
  
  /* Typography */
  --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Spacing */
  --section-padding: 100px 0;
  --container-padding: 0 20px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Z-Index */
  --z-cursor: 10000;
  --z-loader: 9999;
  --z-navbar: 1000;
  --z-back-to-top: 999;
  --z-modal: 998;
}

/* Dark Mode Colors */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-tertiary: #94a3b8;
  --border-color: #334155;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
}

/* ========== RESET & BASE STYLES ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

::selection {
  background-color: var(--primary-color);
  color: #ffffff;
}

::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* ========== LOADING ANIMATION ========== */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-loader);
  transition: opacity 0.5s, visibility 0.5s;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-spinner {
  text-align: center;
}

.spinner {
  width: 60px;
  height: 60px;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

.loader-text {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========== CUSTOM CURSOR ========== */
.cursor-dot,
.cursor-outline {
  pointer-events: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  z-index: var(--z-cursor);
}

.cursor-dot {
  width: 8px;
  height: 8px;
  background-color: var(--primary-color);
}

.cursor-outline {
  width: 40px;
  height: 40px;
  border: 2px solid var(--primary-color);
  transition: all 0.15s ease-out;
}

@media (hover: hover) and (pointer: fine) {
  .cursor-dot,
  .cursor-outline {
    opacity: 1;
  }
}

/* ========== SCROLL PROGRESS BAR ========== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: var(--gradient-primary);
  z-index: calc(var(--z-navbar) + 1);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 0.1s linear;
}

/* ========== NAVIGATION ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 20px 0;
  background: transparent;
  z-index: var(--z-navbar);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  padding: 15px 0;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  border-bottom: 1px solid var(--glass-border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-primary);
  transition: transform var(--transition-base);
}

.logo:hover {
  transform: scale(1.05);
}

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

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

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  transition: color var(--transition-base);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

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

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

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

.theme-toggle {
  width: 45px;
  height: 45px;
  border-radius: var(--radius-full);
  border: 2px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  font-size: 1.1rem;
}

.theme-toggle:hover {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
  transform: rotate(180deg);
}

.btn-download {
  padding: 10px 20px;
  background: var(--gradient-primary);
  color: #ffffff;
  text-decoration: none;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* ========== UTILITY CLASSES ========== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--container-padding);
}

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

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  padding: 8px 20px;
  background: var(--bg-secondary);
  color: var(--primary-color);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 15px;
  border: 2px solid var(--primary-color);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 15px;
}

.section-divider {
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  margin: 0 auto;
  border-radius: var(--radius-full);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #ffffff;
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* ========== HERO SECTION ========== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 120px 20px 80px;
  overflow: hidden;
}

#particles-js {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-greeting {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 15px;
}

.hero-subtitle {
  font-size: 2rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  min-height: 60px;
}

.typing-text {
  color: var(--primary-color);
  font-weight: 600;
}

.cursor-blink {
  animation: blink 0.7s infinite;
  color: var(--primary-color);
  font-weight: 300;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 35px;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  gap: 20px;
  margin-bottom: 40px;
}

.hero-social {
  display: flex;
  gap: 15px;
}

.social-link {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  transition: all var(--transition-base);
  border: 2px solid var(--border-color);
}

.social-link:hover {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.hero-image {
  position: relative;
}

.hero-avatar-wrapper {
  position: relative;
  width: 100%;
  max-width: 450px;
  margin: 0 auto;
}

.hero-avatar-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120%;
  height: 120%;
  background: var(--gradient-primary);
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.3;
  animation: pulse 3s ease-in-out infinite;
}

.hero-avatar {
  position: relative;
  width: 100%;
  height: auto;
  border-radius: 50%;
  border: 5px solid var(--bg-primary);
  box-shadow: var(--shadow-2xl);
  z-index: 2;
}

.hero-avatar-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 105%;
  height: 105%;
  border: 3px solid var(--primary-color);
  border-radius: 50%;
  border-top-color: transparent;
  border-right-color: transparent;
  animation: rotate 4s linear infinite;
}

@keyframes pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.1); }
}

@keyframes rotate {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.mouse {
  width: 25px;
  height: 40px;
  border: 2px solid var(--text-secondary);
  border-radius: 20px;
  position: relative;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--primary-color);
  border-radius: 2px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll 1.5s infinite;
}

@keyframes scroll {
  0% { opacity: 1; top: 8px; }
  100% { opacity: 0; top: 20px; }
}

/* ========== ABOUT SECTION ========== */
.about {
  padding: var(--section-padding);
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-top: 40px;
}

.about-img-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about-img-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}

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

.about-img-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
  mix-blend-mode: multiply;
}

.about-img-wrapper:hover .about-img-overlay {
  opacity: 0.3;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 30px;
}

.stat-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 25px 20px;
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 5px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.about-heading {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 25px;
  line-height: 1.3;
}

.about-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-highlights {
  margin: 30px 0;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 15px;
  font-size: 1rem;
  color: var(--text-secondary);
}

.highlight-item i {
  color: var(--primary-color);
  font-size: 1.2rem;
}

.about-cta {
  margin-top: 30px;
}

/* ========== SKILLS SECTION ========== */
.skills {
  padding: var(--section-padding);
}

.skills-container {
  margin-top: 40px;
  display: grid;
  gap: 40px;
}

.skill-category {
  background: var(--bg-secondary);
  padding: 40px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.skill-category:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.category-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 30px;
}

.category-header i {
  font-size: 2rem;
  color: var(--primary-color);
}

.category-header h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
}

.skill-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.skill-card:hover {
  transform: translateX(10px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-color);
}

.skill-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  min-width: 50px;
  text-align: center;
}

.skill-info {
  flex: 1;
}

.skill-info h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.skill-bar {
  height: 8px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.skill-progress {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  width: 0;
  animation: fillBar 1.5s ease-out forwards;
  animation-delay: 0.3s;
}

@keyframes fillBar {
  to { width: var(--progress); }
}

/* ========== PROJECTS SECTION ========== */
.projects {
  padding: var(--section-padding);
  background: var(--bg-secondary);
}

.projects-filter {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 12px 28px;
  background: var(--bg-primary);
  color: var(--text-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 35px;
}

.project-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.project-card.hide {
  display: none;
}

.project-image {
  position: relative;
  overflow: hidden;
  height: 250px;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(99, 102, 241, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.project-links {
  display: flex;
  gap: 20px;
}

.project-link {
  width: 50px;
  height: 50px;
  background: #ffffff;
  color: var(--primary-color);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  transition: all var(--transition-base);
  text-decoration: none;
}

.project-link:hover {
  transform: scale(1.2) rotate(360deg);
}

.project-content {
  padding: 30px;
}

.project-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--text-primary);
}

.project-description {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tech-tag {
  padding: 6px 14px;
  background: var(--bg-secondary);
  color: var(--primary-color);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--primary-color);
}

.projects-cta {
  text-align: center;
  margin-top: 50px;
}

/* ========== EXPERIENCE SECTION ========== */
.experience {
  padding: var(--section-padding);
}

.timeline {
  position: relative;
  max-width: 900px;
  margin: 50px auto 0;
  padding-left: 50px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-primary);
}

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

.timeline-marker {
  position: absolute;
  left: -38px;
  top: 0;
  width: 20px;
  height: 20px;
  background: var(--primary-color);
  border: 4px solid var(--bg-primary);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  z-index: 1;
}

.timeline-content {
  background: var(--bg-secondary);
  padding: 30px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
  position: relative;
}

.timeline-content::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 20px;
  width: 0;
  height: 0;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-right: 10px solid var(--border-color);
}

.timeline-item:hover .timeline-content {
  transform: translateX(10px);
  box-shadow: var(--shadow-lg);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 15px;
  flex-wrap: wrap;
  gap: 15px;
}

.timeline-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 5px;
}

.timeline-company {
  font-size: 1.1rem;
  color: var(--primary-color);
  font-weight: 600;
}

.timeline-date {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-primary);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  white-space: nowrap;
}

.timeline-description {
  list-style: none;
  margin-bottom: 20px;
}

.timeline-description li {
  position: relative;
  padding-left: 25px;
  margin-bottom: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.timeline-description li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-size: 1.2rem;
}

.timeline-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tech-badge {
  padding: 6px 12px;
  background: var(--bg-primary);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
}

/* ========== EDUCATION SECTION ========== */
.education {
  padding: var(--section-padding);
  background: var(--bg-secondary);
}

.education-content {
  max-width: 800px;
  margin: 40px auto 0;
}

.education-card {
  background: var(--bg-primary);
  padding: 50px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--border-color);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.education-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: var(--gradient-primary);
}

.education-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-2xl);
}

.education-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 70px;
  height: 70px;
  background: var(--gradient-primary);
  color: #ffffff;
  border-radius: var(--radius-full);
  font-size: 2rem;
  margin-bottom: 25px;
  box-shadow: var(--shadow-md);
}

.education-degree {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 15px;
}

.education-institution,
.education-duration,
.education-grade {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.education-institution i,
.education-duration i,
.education-grade i {
  color: var(--primary-color);
}

.education-coursework {
  margin-top: 30px;
  padding-top: 30px;
  border-top: 2px solid var(--border-color);
}

.education-coursework h4 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 15px;
}

.education-coursework ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  list-style: none;
}

.education-coursework li {
  position: relative;
  padding-left: 25px;
  color: var(--text-secondary);
  font-size: 1rem;
}

.education-coursework li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: 700;
}

/* ========== ACHIEVEMENTS SECTION ========== */
.achievements {
  padding: var(--section-padding);
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 40px;
  margin-top: 40px;
}

.achievement-category {
  background: var(--bg-secondary);
  padding: 40px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.achievement-category:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.category-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  color: #ffffff;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
  box-shadow: var(--shadow-md);
}

.category-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 25px;
}

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

.achievement-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 20px;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.achievement-item:hover {
  transform: translateX(10px);
  box-shadow: var(--shadow-md);
}

.achievement-badge {
  width: 45px;
  height: 45px;
  background: var(--bg-secondary);
  color: var(--primary-color);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  border: 2px solid var(--primary-color);
}

.achievement-badge.trophy {
  background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
  color: #fff;
  border-color: #ffd700;
}

.achievement-badge.silver {
  background: linear-gradient(135deg, #c0c0c0 0%, #e8e8e8 100%);
  color: #fff;
  border-color: #c0c0c0;
}

.achievement-badge.star {
  background: var(--gradient-primary);
  color: #fff;
  border-color: var(--primary-color);
}

.achievement-content h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 5px;
}

.achievement-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ========== TESTIMONIALS SECTION ========== */
.testimonials {
  padding: var(--section-padding);
  background: var(--bg-secondary);
}

.testimonials-slider {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 35px;
  margin-top: 40px;
}

.testimonial-card {
  background: var(--bg-primary);
  padding: 35px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  position: relative;
  transition: all var(--transition-base);
}

.testimonial-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
}

.testimonial-avatar {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  border: 3px solid var(--primary-color);
  object-fit: cover;
}

.testimonial-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 3px;
}

.testimonial-position {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.testimonial-rating {
  display: flex;
  gap: 5px;
  margin-bottom: 20px;
}

.testimonial-rating i {
  color: #fbbf24;
  font-size: 1.1rem;
}

.testimonial-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  font-style: italic;
}

.quote-icon {
  position: absolute;
  top: 25px;
  right: 25px;
  font-size: 3rem;
  color: var(--primary-color);
  opacity: 0.1;
}

/* ========== CONTACT SECTION ========== */
.contact {
  padding: var(--section-padding);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  margin-top: 40px;
}

.contact-heading {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.contact-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 35px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 25px;
  margin-bottom: 35px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 20px;
}

.contact-icon {
  width: 55px;
  height: 55px;
  background: var(--gradient-primary);
  color: #ffffff;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-md);
}

.contact-text h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 5px;
}

.contact-text a,
.contact-text p {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

.contact-social {
  display: flex;
  gap: 15px;
}

.social-icon {
  width: 50px;
  height: 50px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  transition: all var(--transition-base);
  border: 2px solid var(--border-color);
  text-decoration: none;
}

.social-icon:hover {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.contact-form {
  background: var(--bg-secondary);
  padding: 40px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.form-group label i {
  color: var(--primary-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 15px 20px;
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-primary);
  transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.btn-submit {
  width: 100%;
  justify-content: center;
  margin-top: 10px;
}

.form-status {
  margin-top: 20px;
  padding: 15px;
  border-radius: var(--radius-lg);
  text-align: center;
  font-weight: 500;
  display: none;
}

.form-status.success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #10b981;
  display: block;
}

.form-status.error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #ef4444;
  display: block;
}

/* ========== FOOTER ========== */
.footer {
  background: var(--bg-secondary);
  padding: 60px 0 30px;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.footer-tagline {
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-column h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer-column ul {
  list-style: none;
}

.footer-column ul li {
  margin-bottom: 12px;
}

.footer-column ul li a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.footer-column ul li a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 20px;
}

.footer-copyright {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.footer-copyright i {
  color: #ef4444;
}

.footer-social {
  display: flex;
  gap: 15px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: var(--bg-primary);
  color: var(--text-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition-base);
  text-decoration: none;
  border: 1px solid var(--border-color);
}

.footer-social a:hover {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
  transform: translateY(-3px);
}

/* ========== BACK TO TOP BUTTON ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-full);
  font-size: 1.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-back-to-top);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-2xl);
}

/* ========== RESPONSIVE DESIGN ========== */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-text {
    text-align: center;
  }

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

  .hero-avatar-wrapper {
    max-width: 350px;
  }

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

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

@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.5rem;
  }

  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    flex-direction: column;
    padding: 30px 20px;
    gap: 1rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-xl);
  }

  .nav-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .hamburger {
    display: flex;
  }

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

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

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

  .timeline {
    padding-left: 30px;
  }

  .timeline::before {
    left: 10px;
  }

  .timeline-marker {
    left: -28px;
  }

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

  .testimonials-slider {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

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

  .education-coursework ul {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta .btn {
    width: 100%;
    justify-content: center;
  }

  .btn-download {
    display: none;
  }

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

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

  .project-card {
    min-width: 280px;
  }

  .contact-form {
    padding: 25px;
  }
}

/* ========== ANIMATIONS ========== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* Print Styles */
@media print {
  .navbar,
  .scroll-progress,
  .back-to-top,
  .loader,
  .cursor-dot,
  .cursor-outline {
    display: none;
  }
}