/* ==========================================================================
       DESIGN SYSTEM & CUSTOM PROPERTIES
       ========================================================================== */
    :root {
      /* Dark Theme (Default) */
      --bg-primary: #0C0C0E;
      --bg-secondary: #121215;
      --bg-card: rgba(18, 18, 21, 0.65);
      --bg-card-hover: rgba(22, 22, 26, 0.85);
      --border-color: rgba(255, 255, 255, 0.07);
      --border-color-hover: rgba(138, 255, 59, 0.3);
      --text-primary: #FFFFFF;
      --text-secondary: #9496A1;
      --text-muted: #626575;
      --accent: #8AFF3B;
      --accent-rgb: 138, 255, 59;
      --accent-hover: #a3ff63;
      --glow-opacity: 0.15;
      --shadow-color: rgba(0, 0, 0, 0.5);
      --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
      --glass-bg: rgba(18, 18, 21, 0.4);
      --glass-border: rgba(255, 255, 255, 0.05);
      
      /* Typography */
      --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      
      /* Spacing & Transitions */
      --radius-lg: 28px;
      --radius-md: 16px;
      --radius-sm: 8px;
      --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
      --transition-bounce: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }

    [data-theme="light"] {
      /* Light Theme */
      --bg-primary: #F4F4F6;
      --bg-secondary: #FFFFFF;
      --bg-card: rgba(255, 255, 255, 0.75);
      --bg-card-hover: rgba(255, 255, 255, 0.95);
      --border-color: rgba(0, 0, 0, 0.06);
      --border-color-hover: rgba(138, 255, 59, 0.6);
      --text-primary: #121215;
      --text-secondary: #585A66;
      --text-muted: #8E91A1;
      --accent: #5EC220; /* Darker green for accessibility on light bg */
      --accent-rgb: 94, 194, 32;
      --accent-hover: #4fa819;
      --glow-opacity: 0.08;
      --shadow-color: rgba(0, 0, 0, 0.05);
      --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
      --glass-bg: rgba(255, 255, 255, 0.5);
      --glass-border: rgba(0, 0, 0, 0.04);
    }

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

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

    body {
      background-color: var(--bg-primary);
      color: var(--text-primary);
      font-family: var(--font-body);
      line-height: 1.6;
      overflow-x: hidden;
      transition: background-color 0.4s ease, color 0.4s ease;
      position: relative;
    }

    /* Tech grid background overlay */
    body::before {
      content: '';
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background-image: 
        linear-gradient(var(--border-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
      background-size: 50px 50px;
      mask-image: radial-gradient(circle at 50% 50%, black, transparent 80%);
      -webkit-mask-image: radial-gradient(circle at 50% 50%, black, transparent 80%);
      z-index: -2;
      pointer-events: none;
      opacity: 0.4;
      transition: background-image 0.4s ease;
    }

    /* Custom Selection */
    ::selection {
      background-color: var(--accent);
      color: #000000;
    }

    /* Custom Scrollbar */
    ::-webkit-scrollbar {
      width: 10px;
    }
    ::-webkit-scrollbar-track {
      background: var(--bg-primary);
    }
    ::-webkit-scrollbar-thumb {
      background: var(--border-color);
      border-radius: 5px;
      border: 2px solid var(--bg-primary);
    }
    ::-webkit-scrollbar-thumb:hover {
      background: var(--text-muted);
    }

    /* Typography */
    h1, h2, h3, h4, h5, h6 {
      font-family: var(--font-heading);
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.1;
    }

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

    /* ==========================================================================
       UTILITIES & REUSABLE LAYOUTS
       ========================================================================== */
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    .text-accent {
      color: var(--accent);
      transition: color 0.4s ease;
    }

    /* Premium Bento Card Styling */
    .bento-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      position: relative;
      overflow: hidden;
      box-shadow: var(--card-shadow);
      backdrop-filter: blur(12px) saturate(180%);
      -webkit-backdrop-filter: blur(12px) saturate(180%);
      transition: var(--transition-smooth);
      transform-style: preserve-3d;
      perspective: 1000px;
    }

    .bento-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(800px circle at var(--mouse-x, 0px) var(--mouse-y, 0px), rgba(var(--accent-rgb), var(--glow-opacity)), transparent 40%);
      z-index: 1;
      pointer-events: none;
      opacity: 0;
      transition: opacity 0.5s ease;
    }

    .bento-card:hover {
      border-color: var(--border-color-hover);
      box-shadow: 0 12px 40px rgba(var(--accent-rgb), 0.08), var(--card-shadow);
      transform: translateY(-4px);
    }

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

    .bento-card-content {
      position: relative;
      z-index: 2;
    }

    /* Standardized Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.75rem;
      padding: 1rem 2rem;
      border-radius: 99px;
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: var(--transition-smooth);
      position: relative;
      overflow: hidden;
    }

    .btn-primary {
      background: var(--accent);
      color: #0C0C0E;
      border: 1px solid var(--accent);
    }

    .btn-primary:hover {
      background: var(--accent-hover);
      border-color: var(--accent-hover);
      box-shadow: 0 0 20px rgba(var(--accent-rgb), 0.4);
      transform: scale(1.02);
    }

    .btn-secondary {
      background: var(--glass-bg);
      color: var(--text-primary);
      border: 1px solid var(--border-color);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
    }

    .btn-secondary:hover {
      background: var(--border-color);
      border-color: var(--text-secondary);
      transform: scale(1.02);
    }

    .btn-icon-round {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-primary);
      cursor: pointer;
      transition: var(--transition-smooth);
    }

    .btn-icon-round:hover {
      border-color: var(--accent);
      color: var(--accent);
      transform: scale(1.1) rotate(15deg);
      box-shadow: 0 0 15px rgba(var(--accent-rgb), 0.2);
    }

    /* Badges */
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.5rem 1.25rem;
      background: var(--bg-secondary);
      border: 1px solid var(--border-color);
      border-radius: 99px;
      font-size: 0.85rem;
      font-weight: 500;
      color: var(--text-secondary);
      transition: var(--transition-smooth);
    }

    .badge i {
      color: var(--accent);
    }

    .badge:hover {
      border-color: var(--accent);
      color: var(--text-primary);
    }

    /* Section Headers */
    .section-header {
      margin-bottom: 3rem;
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
    }

    .section-title {
      font-size: 3rem;
      text-transform: uppercase;
      font-weight: 900;
    }

    .section-subtitle {
      font-size: 0.85rem;
      color: var(--text-muted);
      letter-spacing: 0.15em;
      text-transform: uppercase;
      font-weight: 600;
      margin-bottom: 0.5rem;
    }

    /* ==========================================================================
       HEADER & NAVIGATION
       ========================================================================== */
    header {
      position: sticky;
      top: 0;
      z-index: 100;
      width: 100%;
      padding: 1.25rem 0;
      transition: var(--transition-smooth);
    }

    header.scrolled {
      background: var(--glass-bg);
      border-bottom: 1px solid var(--border-color);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      padding: 0.8rem 0;
    }

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

    .logo {
      font-family: var(--font-heading);
      font-size: 1.75rem;
      font-weight: 900;
      color: var(--text-primary);
      display: flex;
      align-items: center;
    }

    .logo span {
      color: var(--accent);
    }

    nav ul {
      display: flex;
      list-style: none;
      gap: 2rem;
      background: rgba(var(--accent-rgb), 0.03);
      border: 1px solid var(--border-color);
      padding: 0.4rem 1.5rem;
      border-radius: 99px;
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
    }

    nav a {
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-secondary);
      padding: 0.3rem 0;
      position: relative;
    }

    nav a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: var(--transition-smooth);
    }

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

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

    nav a.active {
      color: var(--text-primary);
    }

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

    /* Language Selector Styles */
    .lang-selector {
      position: relative;
    }

    .lang-btn {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.6rem 1rem;
      border-radius: 99px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      color: var(--text-primary);
      font-weight: 600;
      font-size: 0.85rem;
      cursor: pointer;
      transition: var(--transition-smooth);
      font-family: var(--font-body);
    }

    .lang-btn:hover {
      border-color: var(--accent);
      color: var(--accent);
    }

    .lang-btn i.lang-chevron {
      font-size: 0.75rem;
      transition: transform 0.3s ease;
      color: var(--text-secondary);
    }

    .lang-selector.open .lang-chevron {
      transform: rotate(180deg);
      color: var(--accent);
    }

    .lang-dropdown {
      position: absolute;
      top: calc(100% + 0.5rem);
      right: 0;
      background: var(--bg-secondary);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 0.5rem;
      width: 150px;
      box-shadow: 0 10px 25px rgba(0,0,0,0.3);
      display: flex;
      flex-direction: column;
      gap: 0.25rem;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-10px);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      z-index: 1000;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
    }

    .lang-dropdown.show {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .lang-option {
      padding: 0.5rem 0.75rem;
      border-radius: 8px;
      font-size: 0.85rem;
      font-weight: 500;
      color: var(--text-secondary);
      cursor: pointer;
      transition: var(--transition-smooth);
      text-align: left;
    }

    .lang-option:hover {
      background: var(--border-color);
      color: var(--text-primary);
    }

    .lang-option.active {
      background: rgba(var(--accent-rgb), 0.1);
      color: var(--accent);
      font-weight: 600;
    }

    /* Floating Theme Toggle */
    .theme-toggle {
      background: none;
      border: none;
      cursor: pointer;
      color: var(--text-primary);
      font-size: 1.15rem;
      transition: var(--transition-bounce);
      width: 44px;
      height: 44px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--border-color);
      background: var(--bg-card);
    }

    .theme-toggle:hover {
      color: var(--accent);
      border-color: var(--accent);
      transform: scale(1.1) rotate(20deg);
    }

    /* Mobile Nav Toggle */
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      color: var(--text-primary);
      font-size: 1.5rem;
      cursor: pointer;
    }

    /* ==========================================================================
       SECTION 1: HERO
       ========================================================================== */
    .hero-section {
      padding: 2rem 0 4rem 0;
    }

    .hero-card {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 3rem;
      align-items: center;
      min-height: 550px;
    }

    .hero-left {
      display: flex;
      flex-direction: column;
      gap: 1.75rem;
      position: relative;
      z-index: 10;
    }

    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 0.75rem;
    }

    .hero-title {
      font-size: 5.5rem;
      font-weight: 900;
      line-height: 0.9;
      text-transform: uppercase;
      word-break: break-word;
    }

    .hero-quote {
      font-size: 1.25rem;
      color: var(--text-secondary);
      font-weight: 400;
      border-left: 3px solid var(--accent);
      padding-left: 1rem;
      margin: 0.5rem 0;
    }

    .hero-cta {
      display: flex;
      gap: 1rem;
      margin-top: 0.5rem;
    }

    /* Hero Right & Portrait Overlay */
    .hero-right {
      position: relative;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100%;
      width: 100%;
    }

    /* Giant outline typography behind photo */
    .hero-bg-text {
      position: absolute;
      font-family: var(--font-heading);
      font-size: 10rem;
      font-weight: 900;
      color: transparent;
      -webkit-text-stroke: 1px rgba(255, 255, 255, 0.02);
      text-stroke: 1px rgba(255, 255, 255, 0.02);
      letter-spacing: -0.05em;
      text-transform: uppercase;
      user-select: none;
      z-index: 1;
      pointer-events: none;
      line-height: 1;
      transform: translate(-50%, -50%);
      left: 50%;
      top: 50%;
      white-space: nowrap;
    }

    [data-theme="light"] .hero-bg-text {
      -webkit-text-stroke: 1px rgba(0, 0, 0, 0.02);
      text-stroke: 1px rgba(0, 0, 0, 0.02);
    }

    /* Soft Accent Glow */
    .hero-glow {
      position: absolute;
      width: 250px;
      height: 250px;
      background: radial-gradient(circle, rgba(var(--accent-rgb), 0.25) 0%, transparent 70%);
      border-radius: 50%;
      filter: blur(40px);
      z-index: 2;
      pointer-events: none;
    }

    /* Decorative dots */
    .hero-dots {
      position: absolute;
      width: 120px;
      height: 120px;
      background-image: radial-gradient(var(--text-muted) 1.5px, transparent 1.5px);
      background-size: 15px 15px;
      opacity: 0.15;
      z-index: 2;
      top: 10%;
      right: 5%;
      pointer-events: none;
    }

    /* Floating UI Tag Cards */
    .floating-ui {
      position: absolute;
      background: var(--glass-bg);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 0.6rem 1rem;
      font-weight: 600;
      font-size: 0.8rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      box-shadow: 0 4px 15px var(--shadow-color);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      z-index: 5;
      pointer-events: none;
      transition: var(--transition-smooth);
      will-change: transform;
    }

    .floating-ui i {
      color: var(--accent);
    }

    .ui-tag-python { top: 25%; left: -5%; }
    .ui-tag-fastapi { bottom: 15%; left: 0%; }
    .ui-tag-docker { top: 15%; right: 0%; }

    /* The portrait image cutout */
    .portrait-container {
      position: relative;
      z-index: 4;
      width: 100%;
      max-width: 380px;
      height: 480px;
      display: flex;
      justify-content: center;
      align-items: flex-end;
      overflow: visible;
    }

    .portrait-image {
      width: 105%;
      height: 105%;
      object-fit: contain;
      position: absolute;
      bottom: -40px; /* Slight card overlap */
      filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.6));
      transition: transform 0.2s ease-out;
      transform-origin: bottom center;
      pointer-events: none;
      will-change: transform;
    }

    [data-theme="light"] .portrait-image {
      filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.15));
    }

    /* ==========================================================================
       SECTION 2: BENTO GRID
       ========================================================================== */
    .bento-section {
      padding: 4rem 0;
    }

    .bento-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    /* About card spans 2 columns */
    .card-about {
      grid-column: span 2;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .card-about-body {
      margin-top: 2rem;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    .card-about-line {
      font-size: 1.15rem;
      color: var(--text-secondary);
      font-weight: 400;
      line-height: 1.6;
    }

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

    /* Skills card spans 1 column */
    .card-skills {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .card-title-icon {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 2rem;
    }

    .card-title-icon h3 {
      font-size: 1.5rem;
      text-transform: uppercase;
      color: var(--text-primary);
    }

    .card-title-icon i {
      font-size: 1.25rem;
      color: var(--accent);
    }

    .skills-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 0.7rem;
    }

    /* Tech pill hover neon glow */
    .tech-pill {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.4rem 0.9rem;
      background: var(--bg-secondary);
      border: 1px solid var(--border-color);
      border-radius: 99px;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--text-secondary);
      transition: var(--transition-smooth);
      cursor: default;
    }

    .tech-pill:hover {
      color: var(--text-primary);
      border-color: var(--theme-color, var(--accent));
      box-shadow: 0 0 10px rgba(var(--theme-rgb, var(--accent-rgb)), 0.15);
      transform: translateY(-2px);
    }

    .tech-pill i {
      color: var(--theme-color, var(--accent));
    }

    /* Projects lead-in card spans 3 columns */
    .card-projects-link {
      grid-column: span 3;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 2rem 3rem;
      background: linear-gradient(135deg, var(--bg-card) 0%, rgba(var(--accent-rgb), 0.02) 100%);
      cursor: pointer;
    }

    .card-projects-link:hover {
      background: linear-gradient(135deg, var(--bg-card-hover) 0%, rgba(var(--accent-rgb), 0.05) 100%);
    }

    .card-projects-link h3 {
      font-size: 2rem;
      text-transform: uppercase;
      display: flex;
      align-items: center;
      gap: 1.5rem;
    }

    .card-projects-link p {
      color: var(--text-secondary);
      font-size: 1rem;
    }

    .arrow-btn {
      width: 60px;
      height: 60px;
      border-radius: 50%;
      background: var(--accent);
      color: #0C0C0E;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      transition: var(--transition-bounce);
    }

    .card-projects-link:hover .arrow-btn {
      transform: translateY(8px);
      box-shadow: 0 0 20px rgba(var(--accent-rgb), 0.4);
    }

    /* ==========================================================================
       SECTION 3: PROJECTS
       ========================================================================== */
    .projects-section {
      padding: 4rem 0;
    }

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

    .project-card {
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .project-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin-bottom: 1.5rem;
    }

    .project-icon {
      font-size: 1.75rem;
      color: var(--accent);
    }

    .project-title {
      font-size: 1.75rem;
      margin-bottom: 0.75rem;
      text-transform: uppercase;
    }

    .project-desc {
      color: var(--text-secondary);
      font-size: 0.95rem;
      line-height: 1.6;
      margin-bottom: 2rem;
    }

    .project-footer {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
      border-top: 1px solid var(--border-color);
      padding-top: 1.5rem;
      margin-top: auto;
    }

    .project-tech {
      font-size: 0.75rem;
      padding: 0.3rem 0.8rem;
      background: var(--bg-secondary);
      border-radius: 6px;
      color: var(--text-muted);
      border: 1px solid var(--border-color);
      font-weight: 500;
    }

    .project-card:hover .project-icon {
      transform: scale(1.1);
      transition: var(--transition-bounce);
    }

    /* ==========================================================================
       SECTION: PARTNERS
       ========================================================================== */
    .partners-section {
      padding: 4rem 0;
    }

    .partners-card {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 2.5rem;
      padding: 3rem;
      text-decoration: none;
      color: inherit;
    }

    .partners-content {
      display: flex;
      align-items: center;
      gap: 2.5rem;
      flex: 1;
    }

    .partner-logo-wrapper {
      display: flex;
      align-items: center;
      justify-content: center;
      height: 50px;
      flex-shrink: 0;
    }

    .partner-logo-img {
      height: 100%;
      max-height: 50px;
      width: auto;
      object-fit: contain;
      filter: grayscale(1) opacity(0.6);
      transition: var(--transition-smooth);
    }

    .partner-info {
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
      text-align: left;
    }

    .partner-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-primary);
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .partner-desc {
      font-size: 0.95rem;
      color: var(--text-secondary);
      line-height: 1.5;
      transition: var(--transition-smooth);
    }

    .partner-arrow {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--bg-secondary);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-secondary);
      font-size: 1.15rem;
      transition: var(--transition-bounce);
      flex-shrink: 0;
    }

    /* Hover interactions */
    .partners-card:hover .partner-logo-img {
      filter: grayscale(0) opacity(1);
    }

    .partners-card:hover .partner-desc {
      color: var(--text-primary);
    }

    .partners-card:hover .partner-arrow {
      background: var(--accent);
      color: #0C0C0E;
      border-color: var(--accent);
      transform: scale(1.1) rotate(15deg);
      box-shadow: 0 0 15px rgba(var(--accent-rgb), 0.3);
    }

    /* Theme override for dark mode */
    [data-theme="dark"] .partner-logo-img {
      filter: brightness(0) invert(1) opacity(0.6);
    }

    [data-theme="dark"] .partners-card:hover .partner-logo-img {
      filter: brightness(0) invert(1) opacity(1);
    }

    /* ==========================================================================
       SECTION 4: GITHUB ACTIVITY
       ========================================================================== */
    .github-section {
      padding: 4rem 0;
    }

    .github-card {
      width: 100%;
    }

    .github-dashboard {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
      gap: 3rem;
      margin-top: 2rem;
    }

    /* Github Profile Column */
    .github-profile {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
      min-width: 0;
    }

    .github-user-info {
      display: flex;
      align-items: center;
      gap: 1.25rem;
    }

    .github-avatar {
      width: 60px;
      height: 60px;
      border-radius: 50%;
      border: 2px solid var(--accent);
      background: var(--bg-secondary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.75rem;
      color: var(--accent);
      overflow: hidden;
    }
    
    .github-avatar img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .github-name h4 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-primary);
    }

    .github-name a {
      font-size: 0.85rem;
      color: var(--accent);
      font-weight: 500;
    }

    .github-name a:hover {
      text-decoration: underline;
    }

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

    .github-stat-box {
      background: var(--bg-secondary);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1rem;
      text-align: center;
    }

    .github-stat-num {
      font-size: 1.5rem;
      font-family: var(--font-heading);
      font-weight: 800;
      color: var(--accent);
    }

    .github-stat-label {
      font-size: 0.75rem;
      color: var(--text-muted);
      text-transform: uppercase;
      font-weight: 600;
    }

    /* Github Languages list */
    .github-languages {
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }

    .github-lang-title {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--text-muted);
      text-transform: uppercase;
    }

    .github-lang-bar {
      display: flex;
      height: 8px;
      border-radius: 4px;
      overflow: hidden;
      background: var(--bg-secondary);
    }

    .github-lang-progress {
      height: 100%;
    }

    .github-lang-legend {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.75rem;
      color: var(--text-secondary);
    }

    .github-lang-item {
      display: flex;
      align-items: center;
      gap: 0.4rem;
    }

    .github-lang-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
    }

    /* Contribution Map Column */
    .github-activity-panel {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      min-width: 0;
    }

    .github-contrib-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1rem;
    }

    .github-contrib-title {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-secondary);
    }

    /* Calendar Grid */
    .contrib-map-wrapper {
      width: 100%;
      overflow-x: auto;
      background: var(--bg-secondary);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      -webkit-overflow-scrolling: touch;
    }

    .contrib-map {
      display: grid;
      grid-auto-flow: column;
      grid-template-rows: repeat(7, 10px);
      gap: 4px;
      width: max-content;
    }

    .contrib-day {
      width: 10px;
      height: 10px;
      border-radius: 2px;
      background: rgba(255, 255, 255, 0.04);
      transition: background-color 0.2s ease;
      position: relative;
    }

    [data-theme="light"] .contrib-day {
      background: rgba(0, 0, 0, 0.04);
    }

    /* Map colors based on level */
    .contrib-day[data-level="1"] { background: rgba(var(--accent-rgb), 0.2); }
    .contrib-day[data-level="2"] { background: rgba(var(--accent-rgb), 0.45); }
    .contrib-day[data-level="3"] { background: rgba(var(--accent-rgb), 0.7); }
    .contrib-day[data-level="4"] { background: var(--accent); }

    /* Contribution map legend */
    .contrib-legend {
      display: flex;
      justify-content: flex-end;
      align-items: center;
      gap: 0.5rem;
      margin-top: 1rem;
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    .contrib-legend-boxes {
      display: flex;
      gap: 3px;
    }

    /* Tooltip */
    .contrib-tooltip {
      position: absolute;
      background: #000000;
      color: #FFFFFF;
      padding: 0.4rem 0.8rem;
      border-radius: 6px;
      font-size: 0.75rem;
      pointer-events: none;
      opacity: 0;
      z-index: 100;
      transition: opacity 0.2s ease;
      box-shadow: 0 4px 10px rgba(0,0,0,0.5);
      border: 1px solid var(--border-color);
      white-space: nowrap;
      transform: translate(-50%, -120%);
    }

    /* ==========================================================================
       SECTION 5: CONTACTS
       ========================================================================== */
    .contact-section {
      padding: 4rem 0;
    }

    .contact-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .contact-card {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      align-items: flex-start;
      min-height: 220px;
    }

    .contact-card-top {
      width: 100%;
    }

    .contact-icon-wrapper {
      width: 50px;
      height: 50px;
      border-radius: 12px;
      background: var(--bg-secondary);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      color: var(--accent);
      margin-bottom: 1.5rem;
      transition: var(--transition-bounce);
    }

    .contact-card:hover .contact-icon-wrapper {
      transform: scale(1.1) rotate(-10deg);
      border-color: var(--accent);
    }

    .contact-title {
      font-size: 1.25rem;
      margin-bottom: 0.5rem;
      text-transform: uppercase;
    }

    .contact-value {
      font-size: 0.95rem;
      color: var(--text-secondary);
      word-break: break-all;
    }

    .contact-btn {
      margin-top: 1.5rem;
      font-size: 0.85rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      color: var(--accent);
      font-weight: 600;
      cursor: pointer;
    }

    .contact-btn:hover {
      text-decoration: underline;
    }

    /* Notification for copying */
    .toast {
      position: fixed;
      bottom: 2rem;
      right: 2rem;
      background: #121215;
      border: 1px solid var(--accent);
      border-radius: var(--radius-md);
      padding: 1rem 1.5rem;
      display: flex;
      align-items: center;
      gap: 0.75rem;
      color: #FFFFFF;
      box-shadow: 0 10px 30px rgba(0,0,0,0.5);
      z-index: 1000;
      transform: translateY(150%);
      opacity: 0;
      transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }

    .toast.show {
      transform: translateY(0);
      opacity: 1;
    }

    .toast i {
      color: var(--accent);
    }

    /* ==========================================================================
       SECTION 6: FOOTER
       ========================================================================== */
    footer {
      border-top: 1px solid var(--border-color);
      padding: 3rem 0;
      margin-top: 4rem;
      background: var(--bg-secondary);
      font-size: 0.9rem;
      color: var(--text-secondary);
    }

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

    .footer-left {
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .footer-right {
      display: flex;
      gap: 1.5rem;
    }

    .footer-time {
      font-feature-settings: "tnum";
      font-variant-numeric: tabular-nums;
    }

    /* ==========================================================================
       SCROLL REVEAL & CORE INTERACTION STYLES
       ========================================================================== */
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .reveal.active {
      opacity: 1;
      transform: translateY(0);
    }

    /* ==========================================================================
       RESPONSIVE DESIGN (MEDIA QUERIES)
       ========================================================================== */
    @media (max-width: 1024px) {
      .hero-title {
        font-size: 4.5rem;
      }
      .bento-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .card-about {
        grid-column: span 2;
      }
      .card-skills {
        grid-column: span 2;
      }
      .card-projects-link {
        grid-column: span 2;
      }
      .github-dashboard {
        grid-template-columns: minmax(0, 1fr);
        gap: 2rem;
      }
    }

    @media (max-width: 768px) {
      .section-title {
        font-size: 2.25rem;
      }
      .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
      }
      .hero-card {
        grid-template-columns: 1fr;
        gap: 2rem;
        min-height: auto;
        padding-top: 1rem;
      }
      .hero-left {
        gap: 1.25rem;
      }
      .hero-title {
        order: 1;
      }
      .hero-badges {
        order: 2;
      }
      .hero-quote {
        order: 3;
      }
      .hero-cta {
        order: 4;
      }
      .hero-right {
        order: -1; /* portrait on top */
        height: 380px;
        margin-bottom: 1.5rem;
      }
      .portrait-container {
        height: 380px;
      }
      .portrait-image {
        bottom: -20px;
        height: 100%;
        width: 100%;
      }
      .floating-ui {
        padding: 0.4rem 0.8rem;
        font-size: 0.75rem;
      }
      .ui-tag-python { top: 15%; left: 5%; }
      .ui-tag-fastapi { bottom: 10%; left: 8%; }
      .ui-tag-docker { top: 8%; right: 8%; }
      
      nav {
        display: none; /* Mobile menu can be hidden or overlay, simple responsive flow hides menu or simplifies list */
      }
      .mobile-menu-btn {
        display: block;
      }
      .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .contact-card {
        min-height: auto;
      }
      .card-projects-link {
        padding: 1.5rem 2rem;
      }
      .card-projects-link h3 {
        font-size: 1.5rem;
      }
      .partners-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
        padding: 2rem;
      }
      .partners-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
      }
      .partner-logo-wrapper {
        height: 40px;
      }
      .partner-logo-img {
        max-height: 40px;
      }
      .partner-arrow {
        align-self: flex-end;
      }
    }

    @media (max-width: 480px) {
      .hero-title {
        font-size: 3.25rem;
      }
      .hero-cta {
        flex-direction: column;
        gap: 0.75rem;
      }
      .btn {
        width: 100%;
      }
      .bento-card {
        padding: 1.5rem;
      }
      .card-about {
        grid-column: span 2;
      }
      .card-skills {
        grid-column: span 2;
      }
      .card-projects-link {
        grid-column: span 2;
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
      }
      .footer-container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
      }
      /* GitHub responsive tweaks */
      .github-contrib-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
      }
      .contrib-map-wrapper {
        padding: 1rem;
      }
    }

    /* Project Details Overlay CSS */
    .project-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      z-index: 9999;
      visibility: hidden;
      opacity: 0;
      transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
      display: flex;
      justify-content: flex-end;
    }

    .project-overlay.active {
      visibility: visible;
      opacity: 1;
    }

    .project-overlay-backdrop {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(8, 8, 10, 0.75);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      transition: opacity 0.4s ease;
    }

    .project-overlay-panel {
      position: relative;
      width: 100%;
      max-width: 850px;
      height: 100%;
      background: var(--bg-secondary);
      border-left: 1px solid var(--border-color);
      box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
      z-index: 10;
      transform: translate3d(100%, 0, 0);
      transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
      overflow-y: auto;
      padding: 3.5rem 2.5rem;
      display: flex;
      flex-direction: column;
    }

    [data-theme="light"] .project-overlay-panel {
      box-shadow: -10px 0 40px rgba(0, 0, 0, 0.05);
    }

    .project-overlay.active .project-overlay-panel {
      transform: translate3d(0, 0, 0);
    }

    .project-overlay-close {
      position: absolute;
      top: 2rem;
      right: 2rem;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      color: var(--text-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 1.15rem;
      transition: var(--transition-bounce);
      z-index: 20;
    }

    .project-overlay-close:hover {
      border-color: var(--accent);
      color: var(--accent);
      transform: scale(1.1) rotate(90deg);
    }

    /* Overlay Content Layout */
    .proj-details-header {
      margin-top: 1rem;
      margin-bottom: 2.5rem;
      text-align: left;
    }

    .proj-details-cat {
      font-size: 0.8rem;
      color: var(--accent);
      font-weight: 600;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      margin-bottom: 0.5rem;
      display: block;
    }

    .proj-details-title {
      font-size: 3rem;
      font-weight: 900;
      text-transform: uppercase;
      margin-bottom: 1rem;
    }

    .proj-details-lead {
      font-size: 1.15rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* Abstract Visual Mockup */
    .proj-details-visual {
      width: 100%;
      height: 350px;
      background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.05) 0%, rgba(var(--accent-rgb), 0.2) 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 3rem;
      position: relative;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .proj-details-visual::before {
      content: '';
      position: absolute;
      width: 200%;
      height: 200%;
      background-image: 
        linear-gradient(rgba(255, 255, 255, 0.01) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.01) 1px, transparent 1px);
      background-size: 30px 30px;
      transform: rotate(15deg);
      pointer-events: none;
    }

    [data-theme="light"] .proj-details-visual::before {
      background-image: 
        linear-gradient(rgba(0, 0, 0, 0.01) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.01) 1px, transparent 1px);
    }

    .proj-visual-inner {
      position: relative;
      z-index: 2;
      text-align: center;
      color: var(--text-primary);
    }

    .proj-visual-inner i {
      font-size: 5rem;
      color: var(--accent);
      text-shadow: 0 0 30px rgba(var(--accent-rgb), 0.4);
      margin-bottom: 1rem;
      display: inline-block;
      animation: floatIcon 6s ease-in-out infinite;
    }

    @keyframes floatIcon {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-10px); }
    }

    .proj-details-grid {
      display: grid;
      grid-template-columns: 1.7fr 1.3fr;
      gap: 3rem;
      margin-bottom: 3rem;
      text-align: left;
    }

    .proj-details-section-title {
      font-size: 1.4rem;
      font-weight: 800;
      text-transform: uppercase;
      margin-bottom: 1.25rem;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 0.5rem;
      color: var(--text-primary);
    }

    .proj-details-body {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
    }

    .proj-details-body p {
      color: var(--text-secondary);
      font-size: 1rem;
      line-height: 1.6;
    }

    .proj-feature-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }

    .proj-feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 0.75rem;
      color: var(--text-secondary);
      font-size: 0.95rem;
    }

    .proj-feature-list li i {
      color: var(--accent);
      margin-top: 0.35rem;
    }

    .proj-tech-stack-group {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
    }

    .proj-tech-spec {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      text-align: left;
    }

    .proj-tech-spec-title {
      font-size: 0.85rem;
      text-transform: uppercase;
      color: var(--text-muted);
      margin-bottom: 0.75rem;
      font-weight: 700;
      letter-spacing: 0.05em;
    }

    .proj-action-buttons {
      display: flex;
      gap: 1rem;
      margin-top: 2rem;
    }

    /* Overlay Mobile tweaks */
    @media (max-width: 768px) {
      .proj-details-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .project-overlay-panel {
        padding: 3rem 1.5rem;
        width: 100%;
        max-width: 100%;
      }
      .proj-details-title {
        font-size: 2.25rem;
      }
    }