/* ============================================
   SARTHAK PATEL - PORTFOLIO STYLES
   Modern, Professional, Animated Design
   ============================================ */

/* CSS Variables for easy theming */
:root {
  /* Colors */
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary: #0ea5e9;
  --accent: #10b981;
  --dark: #0f172a;
  --dark-light: #1e293b;
  --gray: #64748b;
  --gray-light: #94a3b8;
  --light: #f8fafc;
  --white: #ffffff;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
  --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);

  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-mono: 'Fira Code', 'Consolas', monospace;

  /* Spacing */
  --section-padding: 5rem 2rem;
  --container-max: 1200px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
}

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

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

body {
  font-family: var(--font-main);
  background: var(--light);
  color: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 5px;
}

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

/* ============================================
   LOADING ANIMATION
   ============================================ */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--dark);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

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

.loader-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--dark-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
}

header.scrolled {
  padding: 0.75rem 2rem;
  box-shadow: var(--shadow-lg);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--white);
}

.logo img {
  height: 45px;
  width: auto;
  border-radius: 8px;
  transition: transform var(--transition-normal);
}

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

.logo-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

nav a {
  color: var(--gray-light);
  text-decoration: none;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 8px;
  transition: all var(--transition-normal);
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: all var(--transition-normal);
  transform: translateX(-50%);
}

nav a:hover,
nav a.active {
  color: var(--white);
  background: rgba(99, 102, 241, 0.1);
}

nav a:hover::after,
nav a.active::after {
  width: 60%;
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-btn span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--white);
  margin: 6px 0;
  transition: all var(--transition-normal);
  border-radius: 2px;
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */
main {
  min-height: 100vh;
  padding-top: 80px;
}

#mainContent {
  animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   HOME / HERO SECTION
   ============================================ */
.hero {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(14, 165, 233, 0.1) 0%, transparent 40%);
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* Animated Background Particles */
.particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(99, 102, 241, 0.5);
  border-radius: 50%;
  animation: float linear infinite;
}

@keyframes float {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-100px) rotate(720deg);
    opacity: 0;
  }
}

.hero-content {
  text-align: center;
  z-index: 1;
  padding: 2rem;
  max-width: 900px;
}

.hero-image {
  width: 230px;
  height: 230px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-glow);
  margin-bottom: 2rem;
  animation: scaleIn 0.6s ease, glow 3s ease-in-out infinite;
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.3), 0 0 60px rgba(99, 102, 241, 0.1);
  }
  50% {
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.5), 0 0 80px rgba(99, 102, 241, 0.2);
  }
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.5rem;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-title {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--gray-light);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-title span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
}

.hero-description {
  color: var(--gray-light);
  font-size: 1.1rem;
  line-height: 1.8;
  max-width: 700px;
  margin: 0 auto 2rem;
  animation: fadeInUp 0.6s ease 0.4s both;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 3rem;
  animation: fadeInUp 0.6s ease 0.5s both;
}

.stat {
  text-align: center;
}

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

.stat-label {
  font-size: 0.9rem;
  color: var(--gray-light);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 2.5rem;
  animation: fadeInUp 0.6s ease 0.6s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 50px;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-indicator span {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator span::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  width: 4px;
  height: 8px;
  background: var(--white);
  border-radius: 2px;
  transform: translateX(-50%);
  animation: scroll 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes scroll {
  0% { opacity: 1; top: 6px; }
  100% { opacity: 0; top: 20px; }
}

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

.section-container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--gray);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text p {
  color: var(--gray);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.about-text p:first-child::first-letter {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  float: left;
  line-height: 1;
  margin-right: 0.5rem;
  margin-top: 0.1rem;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.skill-card {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.skill-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.skill-name {
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.skill-desc {
  font-size: 0.9rem;
  color: var(--gray);
}

/* ============================================
   EXPERIENCE SECTION
   ============================================ */
.experience-section {
  padding: var(--section-padding);
  background: var(--gradient-hero);
  position: relative;
}

.experience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.experience-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 2rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.experience-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.experience-card:hover {
  transform: translateY(-10px);
  border-color: rgba(99, 102, 241, 0.5);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.experience-card:hover::before {
  opacity: 0.05;
}

.experience-card > * {
  position: relative;
  z-index: 1;
}

.experience-logo {
  width: 80px;
  height: 80px;
  object-fit: contain;
  background: var(--white);
  border-radius: 16px;
  padding: 0.75rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-md);
}

.experience-company {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.experience-role {
  font-size: 1rem;
  color: var(--primary-light);
  margin-bottom: 0.75rem;
}

.experience-duration {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--gray-light);
  padding: 0.375rem 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50px;
  margin-bottom: 1rem;
}

.experience-type {
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

/* ============================================
   YOUTUBE SECTION
   ============================================ */
.youtube-section {
  padding: var(--section-padding);
  background: var(--light);
}

.youtube-intro {
  text-align: center;
  margin-bottom: 3rem;
}

.youtube-intro p {
  color: var(--gray);
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto;
}

.playlist-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding: 0.875rem 2rem;
  background: #FF0000;
  color: var(--white);
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px rgba(255, 0, 0, 0.3);
}

.playlist-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 0, 0, 0.4);
}

.youtube-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.video-card {
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.video-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.video-thumbnail {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.video-card:hover .video-thumbnail img {
  transform: scale(1.1);
}

.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.video-card:hover .video-play-btn {
  opacity: 1;
}

.video-play-btn span {
  width: 60px;
  height: 60px;
  background: rgba(255, 0, 0, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.5rem;
  transform: scale(0.8);
  transition: transform var(--transition-normal);
}

.video-card:hover .video-play-btn span {
  transform: scale(1);
}

.video-info {
  padding: 1.25rem;
}

.video-session {
  font-size: 0.75rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.video-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.4;
}

/* ============================================
   RESUME SECTION
   ============================================ */
.resume-section {
  padding: 3rem 1rem 5rem;
  background: var(--gradient-hero);
  text-align: center;
  min-height: 100vh;
}

.resume-container {
  max-width: 100%;
  margin: 0 auto;
  padding: 0 1rem;
}

.resume-embed {
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  margin-top: 2rem;
  width: 100%;
}

.resume-embed iframe {
  width: 100%;
  height: 90vh;
  min-height: 800px;
  border: none;
  display: block;
}

.resume-actions {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .resume-embed iframe {
    height: 70vh;
    min-height: 500px;
  }
}

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

.contact-container {
  max-width: 600px;
  margin: 0 auto;
}

.contact-form {
  background: var(--white);
  padding: 3rem;
  border-radius: 24px;
  box-shadow: var(--shadow-xl);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem 1.25rem;
  border: 2px solid rgba(0, 0, 0, 0.1);
  border-radius: 12px;
  font-size: 1rem;
  font-family: inherit;
  transition: all var(--transition-normal);
  background: var(--light);
}

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

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

.form-submit {
  width: 100%;
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

/* Social Links */
.social-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.social-link {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dark);
  color: var(--white);
  border-radius: 50%;
  text-decoration: none;
  font-size: 1.25rem;
  transition: all var(--transition-normal);
}

.social-link:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  background: var(--dark);
  color: var(--white);
  padding: 4rem 2rem 2rem;
}

.footer-container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-logo img {
  height: 40px;
  border-radius: 8px;
}

.footer-logo span {
  font-family: var(--font-display);
  font-size: 1.25rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-nav {
  display: flex;
  gap: 2rem;
}

.footer-nav a {
  color: var(--gray-light);
  text-decoration: none;
  transition: color var(--transition-normal);
}

.footer-nav a:hover {
  color: var(--white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  font-size: 0.9rem;
  color: var(--gray);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children animations */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.3s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.4s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.5s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.6s; }

.stagger-children.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

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

@media (max-width: 768px) {
  header {
    padding: 0.75rem 1rem;
  }

  .header-container {
    flex-wrap: wrap;
  }

  nav {
    display: none;
    width: 100%;
    padding-top: 1rem;
  }

  nav.active {
    display: flex;
    flex-direction: column;
  }

  nav a {
    width: 100%;
    text-align: center;
    padding: 0.75rem;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 2rem;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

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

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

  .footer-content {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }

  .footer-nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  :root {
    --section-padding: 3rem 1rem;
  }

  .hero-image {
    width: 175px;
    height: 175px;
  }

  .contact-form {
    padding: 2rem 1.5rem;
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-center { text-align: center; }
.text-white { color: var(--white); }
.text-muted { color: var(--gray); }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }