/* ==========================================================================
   CSS Cascade Layers & Layout Order
   ========================================================================== */
@layer base, layout, components, animations;

@layer base {
  :root {
    /* Fonts */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;

    /* Theme Colors (Gemini Dark Mode Aesthetic) */
    --color-bg-deep: #020306;
    --color-bg-sapphire: #080d21;
    --color-text-primary: #ffffff;
    --color-text-secondary: #c4c7c5; /* Google Material design muted text */
    --color-text-muted: #8e918f;

    /* Accent Colors */
    --color-accent-cyan: #8bf6ff;     /* Soft pastel cyan */
    --color-accent-violet: #c5a3ff;   /* Soft pastel violet */
    --color-accent-blue: #8ab4f8;     /* Muted google blue */
    
    /* Semantic Colors */
    --color-border: rgba(138, 180, 248, 0.08); /* Clean micro-border */
    --color-border-hover: rgba(139, 246, 255, 0.2);
    --color-card-bg: rgba(255, 255, 255, 0.015);
    --color-card-hover-bg: rgba(255, 255, 255, 0.035);
    
    /* Layout Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;

    /* Interaction Values */
    --transition-smooth: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --border-radius-full: 9999px;
  }

  /* HTML Reset & Settings */
  html {
    scroll-behavior: smooth;
    box-sizing: border-box;
    font-size: 16px;
    background-color: var(--color-bg-deep);
  }

  *, *:before, *:after {
    box-sizing: inherit;
    margin: 0;
    padding: 0;
  }

  body {
    font-family: var(--font-sans);
    color: var(--color-text-primary);
    /* Vibrant deep blue/black gradient filling the whole screen */
    background: radial-gradient(circle at 50% 0%, #0d173b 0%, #050811 45%, #020306 90%) no-repeat fixed;
    background-color: var(--color-bg-deep);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
  }

  /* Accessibility & Focus Outlines */
  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible {
    outline: 2px solid var(--color-accent-cyan);
    outline-offset: 4px;
  }

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

  ul[role="list"] {
    list-style: none;
  }

  button, input, textarea {
    font-family: inherit;
  }

  /* Global SVG/Lucide Icon Fix */
  svg, [data-lucide] {
    width: 20px;
    height: 20px;
    stroke-width: 2px;
    display: inline-block;
    vertical-align: middle;
    stroke: currentColor;
    fill: none;
    transition: var(--transition-smooth);
  }
}

/* ==========================================================================
   Global Layout & Structural Components
   ========================================================================== */
@layer layout {
  .container {
    width: 100%;
    max-width: 1100px;
    margin-inline: auto;
    padding-inline: var(--spacing-md);
  }

  .main-content {
    position: relative;
    z-index: 1;
  }

  /* Base Section Structures */
  section {
    padding-block: var(--spacing-xl);
    position: relative;
    z-index: 10;
  }

  .section-title {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 600;
    letter-spacing: -0.025em;
    margin-bottom: var(--spacing-xs);
    position: relative;
    text-wrap: balance;
  }

  .section-title::after {
    content: "";
    display: block;
    width: 32px;
    height: 2px;
    background-color: var(--color-accent-cyan);
    margin-top: var(--spacing-xs);
  }

  .section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 650px;
    text-wrap: pretty;
  }

  /* Glowing Orbs background elements */
  .glow-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
  }

  /* Interactive Particle Constellation Canvas */
  #particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 1;
    opacity: 0.75;
  }

  .glow-orb {
    position: absolute;
    border-radius: var(--border-radius-full);
    filter: blur(150px);
    opacity: 0.07; /* Keep it subtle and extremely premium */
    mix-blend-mode: screen;
  }

  .glow-orb-1 {
    top: -10%;
    right: 5%;
    width: 650px;
    height: 650px;
    background: radial-gradient(circle, var(--color-accent-violet) 0%, transparent 80%);
    animation: orb-float-1 25s infinite alternate ease-in-out;
  }

  .glow-orb-2 {
    bottom: 5%;
    left: -10%;
    width: 750px;
    height: 750px;
    background: radial-gradient(circle, var(--color-accent-cyan) 0%, transparent 80%);
    animation: orb-float-2 30s infinite alternate ease-in-out;
  }
}

/* ==========================================================================
   Header & Sticky Navigation Bar
   ========================================================================== */
@layer components {
  .navbar-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    background-color: rgba(2, 3, 6, 0.75);
    transition: var(--transition-smooth);
  }

  .navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
    max-width: 1100px;
    margin-inline: auto;
    padding-inline: var(--spacing-md);
  }

  .nav-logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
  }

  .logo-text {
    background: linear-gradient(135deg, #ffffff 30%, var(--color-accent-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .nav-links-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
  }

  .nav-links {
    display: flex;
    gap: var(--spacing-md);
  }

  .nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
  }

  .nav-link:hover,
  .nav-link.active {
    color: var(--color-text-primary);
    background-color: rgba(255, 255, 255, 0.04);
  }

  /* General Button Styles */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.65rem 1.35rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
  }

  .btn-primary {
    background-color: #ffffff;
    color: #000000;
  }

  .btn-primary:hover {
    background-color: var(--color-accent-cyan);
    box-shadow: 0 0 20px rgba(139, 246, 255, 0.35);
  }

  .btn-secondary {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--color-text-primary);
    border-color: var(--color-border);
  }

  .btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--color-border-hover);
  }

  .btn-outline {
    background-color: transparent;
    color: var(--color-text-primary);
    border-color: var(--color-border);
  }

  .btn-outline:hover {
    color: var(--color-accent-cyan);
    border-color: var(--color-accent-cyan);
    box-shadow: 0 0 15px rgba(139, 246, 255, 0.15);
  }

  .icon-sm, .btn-outline svg {
    width: 16px;
    height: 16px;
  }

  /* Mobile menu components */
  .mobile-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: 110;
  }

  .mobile-menu-toggle svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-text-primary);
    display: block;
    transition: var(--transition-smooth);
  }

  .mobile-menu-toggle:hover svg {
    stroke: var(--color-accent-cyan);
  }

  .mobile-drawer {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    height: calc(100vh - 72px);
    background-color: rgba(2, 3, 6, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 99;
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
  }

  .mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .mobile-nav-link {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    display: block;
    padding-block: var(--spacing-xs);
  }

  .mobile-nav-link:hover {
    color: var(--color-text-primary);
    padding-left: var(--spacing-xs);
  }

  .mobile-cta-li {
    margin-top: var(--spacing-md);
  }
}

/* ==========================================================================
   Hero Section Styles
   ========================================================================== */
@layer components {
  .hero-section {
    min-height: 95vh;
    display: flex;
    align-items: center;
    padding-top: 120px;
    padding-bottom: var(--spacing-xl);
  }

  .hero-container {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: var(--spacing-xl);
    align-items: center;
    width: 100%;
  }

  .hero-text-column {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-image-column {
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .hero-image-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  /* Ambient glowing backdrop specific to the image */
  .hero-image-wrapper::before {
    content: "";
    position: absolute;
    width: 115%;
    height: 115%;
    background: radial-gradient(circle, rgba(139, 246, 255, 0.15) 0%, rgba(197, 163, 255, 0.08) 50%, transparent 70%);
    filter: blur(24px);
    z-index: 0;
    pointer-events: none;
    border-radius: var(--border-radius-full);
  }

  .hero-image {
    position: relative;
    z-index: 1;
    width: 290px;
    height: 290px;
    object-fit: cover;
    border-radius: var(--border-radius-full);
    border: 2px solid var(--color-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 
                0 0 40px rgba(139, 246, 255, 0.06);
    transition: var(--transition-smooth);
    background-color: rgba(255, 255, 255, 0.02);
  }

  .hero-image:hover {
    border-color: var(--color-accent-cyan);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 
                0 0 35px rgba(139, 246, 255, 0.25);
    transform: scale(1.02) translateY(-2px);
  }

  .hero-tag {
    margin-bottom: var(--spacing-md);
  }

  .hero-tag-pill {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-accent-cyan);
    background-color: rgba(139, 246, 255, 0.06);
    border: 1px solid rgba(139, 246, 255, 0.15);
    padding: 0.35rem 0.85rem;
    border-radius: var(--border-radius-full);
  }

  .hero-title {
    font-size: clamp(2.25rem, 6vw, 3.5rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-md);
    max-width: 950px;
    text-wrap: balance;
  }

  .gradient-text {
    background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-violet) 50%, var(--color-accent-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline;
  }

  .hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    line-height: 1.6;
    color: var(--color-text-secondary);
    max-width: 800px;
    margin-bottom: var(--spacing-lg);
    text-wrap: pretty;
  }

  .hero-subtitle strong {
    color: var(--color-text-primary);
  }

  .hero-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
  }

  .hero-socials {
    display: flex;
    gap: var(--spacing-sm);
  }

  .social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius-full);
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
  }

  .social-icon:hover {
    color: var(--color-accent-cyan);
    border-color: var(--color-accent-cyan);
    background-color: rgba(139, 246, 255, 0.05);
    transform: translateY(-2px);
  }

  /* Specific fix for inner Lucide SVG dimensions */
  .social-icon svg {
    width: 20px;
    height: 20px;
  }
}

/* ==========================================================================
   Profile / About Section
   ========================================================================== */
@layer components {
  .section-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--spacing-xl);
    align-items: start;
    margin-top: var(--spacing-md);
  }

  .about-text-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .about-lead {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-text-primary);
    text-wrap: pretty;
  }

  .about-body {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    text-wrap: pretty;
  }

  .about-highlights-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .highlight-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    transition: var(--transition-smooth);
  }

  .highlight-card:hover {
    border-color: var(--color-border-hover);
    background-color: var(--color-card-hover-bg);
    transform: translateX(4px);
  }

  .highlight-num {
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

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

/* ==========================================================================
   Experience Section (Timeline)
   ========================================================================== */
@layer components {
  .timeline {
    position: relative;
    max-width: 900px;
    margin-inline: auto;
    margin-top: var(--spacing-lg);
  }

  /* Vertical timeline line */
  .timeline::before {
    content: "";
    position: absolute;
    top: 8px;
    left: 20px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(to bottom, 
      var(--color-accent-cyan) 0%, 
      var(--color-accent-violet) 50%, 
      var(--color-border) 100%
    );
  }

  .timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: var(--spacing-xl);
  }

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

  /* Node circle on the line */
  .timeline-item::before {
    content: "";
    position: absolute;
    left: 14px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: var(--border-radius-full);
    background-color: var(--color-bg-deep);
    border: 2px solid var(--color-accent-cyan);
    z-index: 2;
    transition: var(--transition-smooth);
  }

  .timeline-item:nth-child(even)::before {
    border-color: var(--color-accent-violet);
  }

  .timeline-item:hover::before {
    transform: scale(1.4);
    background-color: var(--color-accent-cyan);
    box-shadow: 0 0 10px var(--color-accent-cyan);
  }

  .timeline-item:nth-child(even):hover::before {
    background-color: var(--color-accent-violet);
    box-shadow: 0 0 10px var(--color-accent-violet);
  }

  .timeline-meta {
    margin-bottom: var(--spacing-xs);
  }

  .timeline-date {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-accent-cyan);
  }

  .timeline-item:nth-child(even) .timeline-date {
    color: var(--color-accent-violet);
  }

  .timeline-location {
    font-size: 0.85rem;
    color: var(--color-text-muted);
  }

  .role-title {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 2px;
    color: var(--color-text-primary);
  }

  .company-name {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
  }

  .timeline-bullets {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    color: var(--color-text-secondary);
    padding-left: var(--spacing-sm);
  }

  .timeline-bullets li {
    list-style-type: circle;
    font-size: 1rem;
    line-height: 1.5;
    text-wrap: pretty;
  }
}

/* ==========================================================================
   Projects Grid & Tab Filters
   ========================================================================== */
@layer components {
  /* Projects Tabs Filter Controls */
  .projects-filter-controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
  }

  .filter-btn {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
  }

  .filter-btn:hover {
    color: var(--color-text-primary);
    background-color: rgba(255, 255, 255, 0.03);
  }

  .filter-btn.active {
    color: var(--color-accent-cyan);
    background-color: rgba(139, 246, 255, 0.06);
    border: 1px solid rgba(139, 246, 255, 0.15);
  }

  .projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
  }

  .project-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
                border-color 0.35s ease, 
                background-color 0.35s ease, 
                opacity 0.4s ease;
    position: relative;
    overflow: hidden;
  }

  .project-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-blue));
    opacity: 0;
    transition: var(--transition-smooth);
  }

  .project-card:hover {
    border-color: var(--color-border-hover);
    background-color: var(--color-card-hover-bg);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
  }

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

  /* When card is hidden via filter */
  .project-card.filter-hide {
    display: none !important;
  }

  .project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
  }

  .project-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    color: var(--color-accent-violet);
    letter-spacing: 0.05em;
  }

  .project-client {
    font-size: 0.85rem;
    color: var(--color-text-muted);
  }

  .project-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
  }

  .project-desc {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
    text-wrap: pretty;
  }

  /* Structured Project Bullets */
  .project-bullets-list {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .project-bullets-list li {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    list-style-type: square;
    line-height: 1.4;
  }

  .project-tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: auto;
  }

  .tech-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: 0.2rem 0.55rem;
    border-radius: var(--border-radius-sm);
  }

  .project-card:hover .tech-tag {
    color: var(--color-text-primary);
    border-color: rgba(255, 255, 255, 0.15);
  }
}

/* ==========================================================================
   Skills Grid Section
   ========================================================================= */
@layer components {
  .skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
  }

  .skills-category-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    transition: var(--transition-smooth);
  }

  .skills-category-card:hover {
    border-color: var(--color-border-hover);
    background-color: var(--color-card-hover-bg);
  }

  .skills-category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-xs);
  }

  .category-icon {
    width: 24px;
    height: 24px;
  }

  .category-icon.text-cyan { color: var(--color-accent-cyan); }
  .category-icon.text-violet { color: var(--color-accent-violet); }
  .category-icon.text-blue { color: var(--color-accent-blue); }
  .category-icon.text-white { color: var(--color-text-primary); }

  .skills-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    font-size: 0.95rem;
    color: var(--color-text-secondary);
  }

  .skills-list li {
    position: relative;
    padding-left: var(--spacing-sm);
  }

  .skills-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-text-muted);
  }

  .skills-meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-style: italic;
  }

  /* Extra details grid */
  .skills-extra-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
  }

  .skills-extra-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    transition: var(--transition-smooth);
  }

  .skills-extra-card:hover {
    border-color: var(--color-border-hover);
  }

  .extra-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
  }

  .extra-title i {
    width: 20px;
    height: 20px;
  }

  .certs-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .cert-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(138, 180, 248, 0.04);
  }

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

  .cert-icon {
    width: 16px;
    height: 16px;
    color: var(--color-accent-cyan);
    margin-top: 4px;
    flex-shrink: 0;
  }

  .cert-content {
    display: flex;
    flex-direction: column;
  }

  .cert-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-primary);
  }

  .cert-org {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
  }

  .cert-meta {
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--color-text-muted);
  }

  .education-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .edu-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(138, 180, 248, 0.04);
  }

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

  .edu-degree {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text-primary);
  }

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

  .edu-date {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-accent-violet);
    margin-top: 2px;
  }

  .edu-meta {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-top: 4px;
    font-style: italic;
  }
}

/* ==========================================================================
   Contact Section & Interactive Form
   ========================================================================== */
@layer components {
  .contact-grid {
    display: grid;
    grid-template-columns: 0.80fr 1.20fr;
    gap: var(--spacing-xl);
    align-items: start;
    margin-top: var(--spacing-lg);
  }

  /* Left Panel: Details */
  .contact-info-panel {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
  }

  .contact-panel-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
  }

  .contact-panel-desc {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
  }

  .contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
  }

  .contact-detail-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
  }

  .contact-detail-icon {
    width: 22px;
    height: 22px;
    color: var(--color-accent-cyan);
    flex-shrink: 0;
  }

  .contact-detail-content {
    display: flex;
    flex-direction: column;
  }

  .detail-label {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
  }

  .detail-value {
    font-size: 1rem;
    color: var(--color-text-primary);
    font-weight: 500;
  }

  .contact-detail-content a.detail-value:hover {
    color: var(--color-accent-cyan);
    text-decoration: underline;
  }

  .contact-social-links {
    display: flex;
    gap: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
  }

  .contact-social-links svg {
    width: 20px;
    height: 20px;
  }

  /* Right Panel: Form */
  .contact-form-panel {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
  }

  .contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
  }

  .form-group input,
  .form-group textarea {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    color: #ffffff;
    padding: 0.75rem var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    transition: var(--transition-smooth);
    width: 100%;
  }

  .form-group textarea {
    min-height: 120px;
    resize: vertical;
  }

  .form-group input::placeholder,
  .form-group textarea::placeholder {
    color: var(--color-text-muted);
    opacity: 0.6;
  }

  .form-group input:hover,
  .form-group textarea:hover {
    border-color: var(--color-border-hover);
  }

  .form-group input:focus,
  .form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent-cyan);
    background-color: rgba(139, 246, 255, 0.01);
    box-shadow: 0 0 15px rgba(139, 246, 255, 0.1);
  }

  .btn-submit {
    align-self: flex-start;
  }

  /* Form Feedback styling */
  .form-feedback {
    font-size: 0.9rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    margin-top: var(--spacing-sm);
  }

  .form-feedback.success {
    background-color: rgba(46, 125, 50, 0.15);
    border: 1px solid rgba(46, 125, 50, 0.3);
    color: #a5d6a7;
  }

  .form-feedback.error {
    background-color: rgba(198, 40, 40, 0.15);
    border: 1px solid rgba(198, 40, 40, 0.3);
    color: #ef9a9a;
  }
}

/* ==========================================================================
   Leadership & Community Component
   ========================================================================== */
@layer components {
  .leadership-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
  }

  .leadership-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
  }

  .leadership-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-violet));
    opacity: 0;
    transition: var(--transition-smooth);
  }

  .leadership-card:hover {
    border-color: var(--color-border-hover);
    background-color: var(--color-card-hover-bg);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
  }

  .leadership-card:hover::before {
    opacity: 1;
  }

  .leadership-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
  }

  .leadership-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
  }

  .leadership-card-icon {
    width: 24px;
    height: 24px;
    color: var(--color-accent-cyan);
  }

  .leadership-card-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    height: 100%;
  }

  .leadership-stat-wrapper {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
  }

  .leadership-stat {
    font-size: 2.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
  }

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

  .leadership-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding-left: var(--spacing-xs);
  }

  .leadership-item {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
  }

  .leadership-item-bullet {
    width: 6px;
    height: 6px;
    border-radius: var(--border-radius-full);
    background-color: var(--color-accent-cyan);
    margin-top: 8px;
    flex-shrink: 0;
  }

  .leadership-card:nth-child(even) .leadership-item-bullet {
    background-color: var(--color-accent-violet);
  }

  .leadership-item-text {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--color-text-secondary);
  }

  .leadership-item-text strong {
    color: var(--color-text-primary);
  }

  .leadership-badge-container {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }

  .leadership-badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background-color: rgba(197, 163, 255, 0.06);
    border: 1px solid rgba(197, 163, 255, 0.15);
    color: var(--color-accent-violet);
    padding: 0.2rem 0.55rem;
    border-radius: var(--border-radius-sm);
  }

  .leadership-card:nth-child(even) .leadership-badge {
    background-color: rgba(139, 246, 255, 0.06);
    border: 1px solid rgba(139, 246, 255, 0.15);
    color: var(--color-accent-cyan);
  }

  .leadership-action {
    margin-top: auto;
  }
}

/* ==========================================================================
   Footer Component
   ========================================================================== */
@layer components {
  .footer {
    border-top: 1px solid var(--color-border);
    background-color: rgba(2, 3, 6, 0.6);
    padding-block: var(--spacing-lg);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    position: relative;
    z-index: 10;
  }

  .footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .footer-left {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .footer-tagline {
    font-size: 0.8rem;
    color: var(--color-text-muted);
  }

  .back-to-top-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    background-color: transparent;
    border: 1px solid var(--color-border);
  }

  .back-to-top-btn:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-hover);
    background-color: rgba(255, 255, 255, 0.02);
  }
}

/* ==========================================================================
   Keyframes & Micro-Animations
   ========================================================================== */
@layer animations {
  /* Orbs Sway Keyframes */
  @keyframes orb-float-1 {
    0% {
      transform: translate(0, 0) scale(1);
    }
    50% {
      transform: translate(-5%, 10%) scale(1.15);
    }
    100% {
      transform: translate(8%, -5%) scale(0.9);
    }
  }

  @keyframes orb-float-2 {
    0% {
      transform: translate(0, 0) scale(1.1);
    }
    50% {
      transform: translate(10%, -5%) scale(0.85);
    }
    100% {
      transform: translate(-8%, 8%) scale(1.05);
    }
  }

  /* Fade-in animation class applied by JavaScript */
  .fade-in-reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  }

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

  /* Standard utility utility classes */
  .hidden {
    display: none !important;
  }
}

/* ==========================================================================
   Responsive Media Queries (Mobile First)
   ========================================================================== */
@media (max-width: 900px) {
  @layer layout {
    section {
      padding-block: var(--spacing-lg);
    }
  }

  @layer components {
    .navbar {
      height: 64px;
    }

    .mobile-drawer {
      top: 64px;
      height: calc(100vh - 64px);
    }

    .nav-links-wrapper {
      display: none; /* Hide desktop nav menu */
    }

    .mobile-menu-toggle {
      display: block; /* Show menu toggle button */
    }

    .hero-section {
      padding-top: 100px;
      min-height: auto;
    }

    .hero-container {
      grid-template-columns: 1fr;
      text-align: center;
      gap: var(--spacing-lg);
    }

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

    .hero-image-column {
      order: -1;
      margin-bottom: var(--spacing-sm);
    }

    .hero-image {
      width: 220px;
      height: 220px;
    }

    .hero-title {
      font-size: 2.25rem;
      margin-bottom: var(--spacing-sm);
    }

    .hero-subtitle {
      font-size: 1.1rem;
      margin-bottom: var(--spacing-md);
    }

    .hero-actions {
      flex-direction: column;
      width: 100%;
      gap: var(--spacing-xs);
    }

    .hero-actions .btn {
      width: 100%;
    }

    .section-grid {
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
    }

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

    .timeline-item {
      padding-left: 35px;
    }

    .timeline-item::before {
      left: 4px;
    }

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

    .leadership-grid {
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
    }

    .contact-grid {
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
    }

    .footer-container {
      flex-direction: column;
      gap: var(--spacing-md);
      text-align: center;
    }

    .footer-left {
      align-items: center;
    }

    .projects-filter-controls {
      justify-content: center;
    }
  }
}

@media (min-width: 901px) {
  /* Prevent mobile drawer display on large monitors */
  .mobile-drawer.active {
    display: none !important;
  }
}