/* Reset and basic styles */

:root {
    /* Dark theme (default) */
    --bg-primary: #0a0a0f;
    --bg-secondary: #1a1a2e;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --accent-primary: #7c4dff;
    --accent-secondary: #b388ff;
    --card-bg: rgba(26, 26, 46, 0.8);
    --shadow-color: rgba(124, 77, 255, 0.2);
    --input-bg: rgba(255, 255, 255, 0.08);
    --input-shadow: rgba(124, 77, 255, 0.2);
    --button-bg: #7c4dff;
    --button-text: #ffffff;
    
    /* New variables for better maintainability */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-xxl: 2rem;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

.light-mode {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a4a;
    --accent-primary: #6200ea;
    --accent-secondary: #7c4dff;
    --card-bg: rgba(245, 245, 247, 0.8);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --input-bg: rgba(0, 0, 0, 0.05);
    --input-shadow: rgba(0, 0, 0, 0.1);
    --button-bg: #6200ea;
    --button-text: #ffffff;
}

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

body {
    font-family: 'Segoe UI', sans-serif;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    position: relative;
    z-index: 1;
    transition: background-color 0.3s ease, color 0.3s ease;
}

@keyframes backgroundAnim {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Header */
header {
    text-align: center;
    padding: clamp(1rem, 5vw, 3rem) clamp(0.5rem, 2vw, 1rem);
}
header h1 {
    font-size: clamp(1.8rem, 5vw, 3rem);
    font-weight: bold;
    color: var(--accent-primary);
    text-shadow: 0 0 10px var(--accent-secondary);
}
header p {
    margin-top: 0.5rem;
    font-size: 1.2rem;
    color: var(--text-secondary);
}
nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: clamp(1rem, 3vw, 2rem);
    padding: 1rem 0;
    flex-wrap: wrap;
}
nav a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s;
}
nav a:hover {
    text-shadow: 0 0 8px var(--accent-secondary);
}

/* Card Sections */
.card {
    max-width: 90%;
    margin: 2rem auto;
    padding: clamp(1rem, 3vw, 2rem);
    border-radius: clamp(10px, 2vw, 20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

/* Glass Card Effect */
.glass-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

/* Neon Card Effect */
.neon-card {
    background: var(--card-bg);
    border: 2px solid transparent;
    box-shadow: 0 0 15px rgba(124, 77, 255, 0.3);
}

.neon-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 0 20px var(--accent-primary),
                0 0 40px var(--accent-secondary);
    animation: neonPulse 1.5s infinite;
}

@keyframes neonPulse {
    0% { box-shadow: 0 0 20px var(--accent-primary), 0 0 40px var(--accent-secondary); }
    50% { box-shadow: 0 0 30px var(--accent-primary), 0 0 60px var(--accent-secondary); }
    100% { box-shadow: 0 0 20px var(--accent-primary), 0 0 40px var(--accent-secondary); }
}

/* Gradient Card Effect */
.gradient-card {
    background: linear-gradient(135deg, var(--card-bg), var(--bg-secondary));
    border: 1px solid transparent;
    background-clip: padding-box;
}

.gradient-card:hover {
    background: linear-gradient(135deg, var(--bg-secondary), var(--card-bg));
    transform: scale(1.02);
}

/* Shine Card Effect */
.shine-card {
    background: var(--card-bg);
    position: relative;
    overflow: hidden;
}

.shine-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
      45deg,
      transparent,
      rgba(255, 255, 255, 0.1),
      transparent
    );
    transform: rotate(45deg);
    transition: 0.6s;
    opacity: 0;
}

.shine-card:hover::before {
    opacity: 1;
    transform: rotate(45deg) translate(50%, 50%);
}

/* Glow Card Effect */
.glow-card {
    background: var(--card-bg);
    border: 1px solid var(--accent-primary);
}

.glow-card:hover {
    box-shadow: 0 0 30px var(--accent-primary);
    transform: translateY(-5px);
}

/* Mirror Card Effect */
.mirror-card {
    background: var(--card-bg);
    position: relative;
}

.mirror-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
      45deg,
      transparent 0%,
      rgba(255, 255, 255, 0.1) 50%,
      transparent 100%
    );
    opacity: 0;
    transition: 0.5s;
}

.mirror-card:hover::after {
    opacity: 1;
    transform: scale(1.1);
}

/* Pulse Card Effect */
.pulse-card {
    background: var(--card-bg);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(124, 77, 255, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(124, 77, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(124, 77, 255, 0); }
}

.pulse-card:hover {
    animation: none;
    transform: scale(1.02);
    box-shadow: 0 0 20px var(--accent-primary);
}

/* Common Card Hover Effects */
.card h2 {
    position: relative;
    display: inline-block;
    transition: color 0.3s ease;
}

.card:hover h2 {
    color: var(--accent-primary);
}

.card h2::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: width 0.3s ease;
}

.card:hover h2::after {
    width: 100%;
}

/* Interactive Elements Inside Cards */
.card a,
.card button {
    transition: all 0.3s ease;
}

.card a:hover,
.card button:hover {
    transform: scale(1.05);
    color: var(--accent-primary);
}

/* Social Icons */
.social-icons {
    display: flex;
    justify-content: center;
    gap: clamp(1rem, 2vw, 1.5rem);
}
.social-icons img {
    width: clamp(28px, 4vw, 40px);
}
.social-icons img:hover {
    transform: none;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-secondary);
}

/* Certificate Section */
#certifications ul {
    margin-top: 1rem;
    padding-left: 1rem;
}
#certifications li {
    margin: 1rem 0;
}
#certifications a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
}
#certifications a:hover {
    text-shadow: 0 0 8px var(--accent-secondary);
}
/* Feedback Form */
.feedback-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.submit-btn {
    background-color: #007bff;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background-color: #0056b3;
}

#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    z-index: -2;
}
/* === Responsive Design === */

@media (max-width: 1200px) {
    html {
        font-size: 15px;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    nav ul {
        flex-direction: column;
        align-items: center;
    }

    .card {
        margin: 1rem auto;
    }

    .social-icons img {
        width: 32px;
    }

    .feedback-form input,
    .feedback-form textarea {
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 13px;
    }
    header {
        padding: 2rem 1rem;
    }

    header h1 {
        font-size: 1.8rem;
    }

    header p {
        font-size: 1rem;
    }
    .card {
        width: 90%;
        max-width: 800px;
        margin: 2rem auto;
    }
    
    .feedback-form button {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .social-icons {
        gap: 1rem;
    }

    .social-icons img {
        width: 28px;
    }
}

/* Touch device optimizations */
@media (hover: none) {
    .card:hover,
    .feedback-form input:hover,
    .feedback-form textarea:hover,
    .feedback-form button:hover {
        transform: none;
    }
    
    nav a:hover {
        text-shadow: none;
    }
}

/* Landscape mode optimizations */
@media (max-height: 500px) and (orientation: landscape) {
    header {
        padding: 1rem;
    }
    
    .card {
        margin: 1rem auto;
    }
}
header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(1.8rem, 5vw, 3rem);
    font-weight: bold;
    color: var(--primary-color);
    text-shadow: 0 0 10px var(--primary-color);
}

.toggle-theme {
    position: fixed;
    top: 1rem;
    right: 1rem;
    background: var(--card-bg);
    border: none;
    padding: 0.75rem;
    border-radius: 50%;
    color: var(--text-primary);
    cursor: pointer;
    box-shadow: 0 4px 12px var(--shadow-color);
    transition: all var(--transition-normal);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
}

.toggle-theme:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px var(--shadow-color);
}

.toggle-theme:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-primary);
}

.toggle-theme svg {
    position: absolute;
    transition: all var(--transition-normal);
}

.sun-icon {
    opacity: 1;
    transform: scale(1);
}

.moon-icon {
    opacity: 0;
    transform: scale(0);
}

/* Light mode styles */
.light-mode .sun-icon {
    opacity: 0;
    transform: scale(0);
}

.light-mode .moon-icon {
    opacity: 1;
    transform: scale(1);
}

/* Animation for icon transition */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.toggle-theme:hover .sun-icon {
    animation: rotate 1s linear infinite;
}

.toggle-theme:hover .moon-icon {
    animation: rotate 1s linear infinite;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .toggle-theme:hover .sun-icon,
    .toggle-theme:hover .moon-icon {
        animation: none;
    }
    
    .toggle-theme:hover {
        transform: none;
    }
}

/* Gallery Styles */
.gallery-grid {
    display: flex;
    overflow-x: auto;
    gap: 2rem;
    padding: 1.5rem 0;
    height: 320px;
    margin: 0 -1rem;
    padding: 0 1rem;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-primary) transparent;
    scroll-snap-type: x mandatory;
}

/* Custom Scrollbar Styling */
.gallery-grid::-webkit-scrollbar {
    height: 8px;
    background: transparent;
}

.gallery-grid::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    margin: 0 10px;
}

.gallery-grid::-webkit-scrollbar-thumb {
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.gallery-grid::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary));
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 16px;
    min-width: 300px;
    height: 220px;
    flex-shrink: 0;
    box-shadow: 0 8px 24px var(--shadow-color);
    background: var(--card-bg);
    scroll-snap-align: start;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 32px var(--shadow-color);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    color: white;
    backdrop-filter: blur(8px);
    z-index: 2;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-caption {
    transform: translateY(0);
}

.gallery-caption h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--accent-primary);
}

.gallery-caption p {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Gallery Container and Navigation */
.gallery-container {
    position: relative;
    padding: 0 40px;
    margin: 0 -1rem;
}

.scroll-button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--card-bg);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--accent-primary);
    font-size: 24px;
    z-index: 2;
    box-shadow: 0 4px 16px var(--shadow-color);
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
}

.scroll-button:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-50%) scale(1.1);
}

.scroll-left {
    left: 10px;
}

.scroll-right {
    right: 10px;
}

/* Lightbox Styles */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 1000;
    cursor: pointer;
    backdrop-filter: blur(12px);
}

.lightbox img {
    max-width: 90%;
    max-height: 90vh;
    margin: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 16px;
    box-shadow: 0 0 40px var(--shadow-color);
    transition: transform 0.3s ease;
}

.lightbox img:hover {
    transform: translate(-50%, -50%) scale(1.02);
}

.close-lightbox {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 36px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
}

.close-lightbox:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    color: white;
    padding: 20px 16px;
    border: none;
    cursor: pointer;
    font-size: 28px;
    border-radius: 12px;
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-nav.prev {
    left: 20px;
}

.lightbox-nav.next {
    right: 20px;
}

/* Touch device optimizations */
@media (hover: none) {
    .gallery-caption {
        background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    }
}

/* Accessibility Improvements */
:focus {
    outline: 3px solid var(--accent-primary);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

:focus-visible {
    outline: 3px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .card {
        break-inside: avoid;
        page-break-inside: avoid;
        border: 1px solid #ddd;
        box-shadow: none;
    }
    
    .social-icons,
    .gallery-container,
    .toggle-theme,
    #particles-js {
        display: none;
    }
    
    a {
        text-decoration: none;
        color: black;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
    }
}

/* Performance Optimizations */
.card {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

.gallery-item {
    will-change: transform;
    transform: translateZ(0);
}

/* Modern Grid Layout for Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

/* Responsive Typography */
html {
    font-size: 16px;
}

@media (max-width: 1200px) {
    html {
        font-size: 15px;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 13px;
    }
}

/* High Contrast Mode Support */
@media (forced-colors: active) {
    .card {
        border: 2px solid CanvasText;
    }
    
    .social-icons img {
        forced-color-adjust: none;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .card:hover {
        transform: none;
    }
    
    .gallery-item:hover {
        transform: none;
    }
}

/* === HERO SECTION === */
.hero {
  width: 100%;
  min-height: 60vh;
  background: linear-gradient(120deg, var(--accent-primary) 0%, var(--bg-secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1rem 2rem 1rem;
  box-shadow: 0 8px 32px var(--shadow-color);
  position: relative;
  z-index: 2;
}
.hero-content {
  text-align: center;
  color: var(--text-primary);
  max-width: 700px;
  margin: 0 auto;
}
.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 800;
  color: #fff;
  text-shadow: 0 2px 24px var(--accent-secondary);
  margin-bottom: 0.5rem;
}
.hero-title {
  font-size: 1.5rem;
  color: var(--accent-secondary);
  margin-bottom: 1rem;
}
.hero-intro {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}
.resume-btn {
  display: inline-block;
  background: var(--button-bg);
  color: var(--button-text);
  padding: 0.8rem 2.2rem;
  border-radius: var(--border-radius-md);
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 4px 16px var(--shadow-color);
  transition: background 0.3s, transform 0.2s;
  border: none;
  cursor: pointer;
}
.resume-btn:hover {
  background: var(--accent-secondary);
  color: #fff;
  transform: translateY(-2px) scale(1.04);
}

/* Sticky Navigation */
.sticky-nav {
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  z-index: 10;
  box-shadow: 0 2px 12px var(--shadow-color);
}

@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2rem;
  }
  .hero-title {
    font-size: 1.1rem;
  }
  .hero-intro {
    font-size: 1rem;
  }
  .resume-btn {
    font-size: 1rem;
    padding: 0.7rem 1.5rem;
  }
  .hero {
    min-height: 40vh;
    padding: 2rem 0.5rem 1rem 0.5rem;
  }
}

/* === Extra Large Screens (TV, 4K, Ultra-wide) === */
@media (min-width: 1800px) {
  html {
    font-size: 20px;
  }
  .hero-content h1 {
    font-size: 4rem;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-intro {
    font-size: 1.5rem;
  }
  .card {
    max-width: 1200px;
    font-size: 1.3rem;
  }
  .gallery-grid {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
  }
  .gallery-item {
    min-width: 400px;
    height: 300px;
  }
}

/* Fine-tune for small mobile devices */
@media (max-width: 375px) {
  .hero-content h1 {
    font-size: 1.3rem;
  }
  .hero-title {
    font-size: 0.9rem;
  }
  .hero-intro {
    font-size: 0.8rem;
  }
  .resume-btn {
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
  }
  .card {
    padding: 0.7rem;
  }
  .gallery-item {
    min-width: 180px;
    height: 120px;
  }
}

/* Ensure gallery images scale smoothly */
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100vw;
  max-height: 100vh;
}

/* Transparent Header Styles */
.main-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
  transition: background 0.3s, transform 0.4s cubic-bezier(0.4,0,0.2,1), opacity 0.4s;
}
.hide-header {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}
.header-container {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.5rem 2rem;
  background: transparent;
}
.logo a {
  font-size: 1.7rem;
  font-weight: bold;
  color: #fff;
  letter-spacing: 2px;
  text-decoration: none;
  font-family: 'Montserrat', Arial, sans-serif;
  transition: color 0.2s;
}
.logo a:hover {
  color: #00e6e6;
}
.main-nav {
  display: flex;
  align-items: center;
}
.nav-list {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-list li a {
  color: #fff;
  font-size: 1.1rem;
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 1px;
  padding: 0.5rem 0.8rem;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}
.nav-list li a:hover, .nav-list li a:focus {
  background: rgba(0,230,230,0.12);
  color: #00e6e6;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: 1rem;
}
.nav-toggle .bar {
  width: 26px;
  height: 3px;
  background: #fff;
  margin: 4px 0;
  border-radius: 2px;
  transition: 0.3s;
}
@media (max-width: 800px) {
  .header-container {
    padding: 0.5rem 1rem;
  }
  .nav-list {
    position: absolute;
    top: 64px;
    right: 0;
    background: rgba(30,30,30,0.95);
    flex-direction: column;
    width: 200px;
    gap: 0;
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    border-radius: 0 0 12px 12px;
    overflow: hidden;
    transform: translateY(-200%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s;
  }
  .nav-list.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-list li {
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .nav-list li:last-child {
    border-bottom: none;
  }
  .nav-toggle {
    display: flex;
  }
}

/* Navbar Modern Enhancements */
.main-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 24px rgba(0,0,0,0.12);
  transition: background 0.3s, transform 0.4s cubic-bezier(0.4,0,0.2,1), opacity 0.4s;
  border-radius: 0 0 1.5rem 1.5rem;
}
.nav-list {
  display: flex;
  gap: 2.2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-list li {
  display: flex;
  align-items: center;
}
.nav-list li a {
  display: flex;
  align-items: center;
  gap: 0.5em;
  color: #fff;
  font-size: 1.18rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 1px;
  padding: 0.5rem 1.3rem;
  border-radius: 2rem;
  position: relative;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  background: transparent;
}
.nav-list li a::after {
  content: '';
  position: absolute;
  left: 1.2rem;
  right: 1.2rem;
  bottom: 0.4rem;
  height: 3px;
  background: linear-gradient(90deg, #00e6e6 0%, #00bfff 100%);
  border-radius: 2px;
  opacity: 0;
  transform: scaleX(0);
  transition: opacity 0.2s, transform 0.2s;
}
.nav-list li a:hover,
.nav-list li a:focus {
  background: rgba(0,230,230,0.13);
  color: #00e6e6;
  box-shadow: 0 2px 12px rgba(0,230,230,0.08);
}
.nav-list li a:hover::after,
.nav-list li a:focus::after,
.nav-list li a.active::after {
  opacity: 1;
  transform: scaleX(1);
}
.nav-list li a.active {
  color: #00e6e6;
  background: rgba(0,230,230,0.18);
  box-shadow: 0 2px 12px rgba(0,230,230,0.10);
}
/* Emoji icons for nav items */
.nav-list li.about-link a::before { content: '👤'; margin-right: 0.4em; }
.nav-list li.skills-link a::before { content: '💡'; margin-right: 0.4em; }
.nav-list li.projects-link a::before { content: '🛠️'; margin-right: 0.4em; }
.nav-list li.certifications-link a::before { content: '📜'; margin-right: 0.4em; }
.nav-list li.contact-link a::before { content: '✉️'; margin-right: 0.4em; }

@media (max-width: 800px) {
  .nav-list {
    position: fixed;
    top: 0;
    right: 0;
    background: rgba(30,30,30,0.98);
    flex-direction: column;
    width: 220px;
    height: 100vh;
    gap: 0.5rem;
    box-shadow: -2px 0 32px rgba(0,0,0,0.18);
    border-radius: 0 0 0 2rem;
    overflow: hidden;
    transform: translateX(100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s cubic-bezier(0.4,0,0.2,1), opacity 0.3s;
    padding-top: 4rem;
  }
  .nav-list.open {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-list li {
    border-bottom: 1px solid rgba(255,255,255,0.08);
    justify-content: flex-start;
  }
  .nav-list li:last-child {
    border-bottom: none;
  }
  .nav-toggle {
    display: flex;
  }
}

.hero-avatar {
  display: block;
  margin: 0 auto 1.2rem auto;
  width: 140px;
  height: 140px;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid #00e6e6;
  box-shadow: 0 4px 32px rgba(0,230,230,0.18), 0 1.5px 8px rgba(0,0,0,0.10);
  background: #fff;
  transition: box-shadow 0.3s, border-color 0.3s;
}
.hero-avatar:hover, .hero-avatar:focus {
  box-shadow: 0 8px 48px rgba(0,230,230,0.28), 0 2px 12px rgba(0,0,0,0.13);
  border-color: #00bfff;
}
@media (max-width: 600px) {
  .hero-avatar {
    width: 90px;
    height: 90px;
  }
}

.card.pulse-card.project-card {
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1), box-shadow 0.35s, opacity 0.25s;
  box-shadow: 0 2px 16px rgba(0,0,0,0.10);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.card.pulse-card.project-card:hover, .card.pulse-card.project-card:focus {
  transform: translateY(-12px) scale(1.035);
  box-shadow: 0 8px 32px rgba(0,230,230,0.18), 0 4px 24px rgba(0,0,0,0.18);
  z-index: 2;
}
.card.pulse-card.project-card .project-extra {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
}
.card.pulse-card.project-card:hover .project-extra, .card.pulse-card.project-card:focus .project-extra {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.light-mode body {
  background: #f7f8fa;
  color: #1a1a2e;
}
.light-mode .main-header {
  background: rgba(255,255,255,0.85);
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  border-radius: 0 0 1.5rem 1.5rem;
}
.light-mode .nav-list li a {
  color: #6200ea;
  background: transparent;
}
.light-mode .nav-list li a.active,
.light-mode .nav-list li a:hover,
.light-mode .nav-list li a:focus {
  color: #fff;
  background: linear-gradient(90deg, #7c4dff 0%, #6200ea 100%);
  box-shadow: 0 2px 12px rgba(124,77,255,0.10);
}
.light-mode .nav-list li a::after {
  background: linear-gradient(90deg, #7c4dff 0%, #6200ea 100%);
}
.light-mode .hero {
  background: linear-gradient(120deg, #e3e6ff 0%, #fff 100%);
  box-shadow: 0 8px 32px rgba(124,77,255,0.08);
}
.light-mode .card, .light-mode .pulse-card, .light-mode .project-card {
  background: rgba(255,255,255,0.95) !important;
  color: #1a1a2e;
  box-shadow: 0 2px 16px rgba(124,77,255,0.08);
  border: 1px solid #ececff;
}
.light-mode .hero-content h1 {
  color: #6200ea;
  text-shadow: 0 2px 24px #b388ff;
}
.light-mode .hero-title {
  color: #7c4dff;
}
.light-mode .hero-intro {
  color: #4a4a4a;
}
.light-mode .resume-btn {
  background: #7c4dff;
  color: #fff;
}
.light-mode .resume-btn:hover {
  background: #6200ea;
}
.light-mode .gallery-item {
  background: #f5f5f7;
  box-shadow: 0 8px 24px rgba(124,77,255,0.08);
}
.light-mode .gallery-caption {
  background: linear-gradient(transparent, rgba(255,255,255,0.95));
  color: #1a1a2e;
}
.light-mode .footer, .light-mode footer {
  color: #4a4a4a;
}
.light-mode .hero-avatar {
  border: 4px solid #7c4dff;
  background: #fff;
}