@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

@layer reset, base, theme, components, utilities;

@layer reset {
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  html {
    scroll-behavior: smooth;
    font-size: 16px;
  }
}

@layer base {
  :root {
    color-scheme: light dark;
    
    /* Brand Design Tokens */
    --blue-primary: #0088ff;
    --blue-primary-rgb: 0, 136, 255;
    --violet-primary: #8a2be2;
    --violet-primary-rgb: 138, 43, 226;
    
    /* Mode-Specific Color Themes */
    --bg-light: #f4f7f6;
    --bg-dark: #07090e;
    
    --text-light: #334155;
    --text-dark: #94a3b8;
    
    --heading-light: #0f172a;
    --heading-dark: #f8fafc;
    
    --glass-bg-light: rgba(255, 255, 255, 0.45);
    --glass-bg-dark: rgba(15, 23, 42, 0.45);
    
    --glass-border-light: rgba(255, 255, 255, 0.4);
    --glass-border-dark: rgba(255, 255, 255, 0.05);

    --mesh-light: radial-gradient(at 10% 10%, rgba(0, 136, 255, 0.07) 0px, transparent 50%),
                  radial-gradient(at 90% 90%, rgba(138, 43, 226, 0.07) 0px, transparent 50%);
    --mesh-dark: radial-gradient(at 10% 10%, rgba(0, 136, 255, 0.15) 0px, transparent 50%),
                 radial-gradient(at 90% 90%, rgba(138, 43, 226, 0.12) 0px, transparent 50%);
    
    /* Variable Assignments (Fallback for older browsers) */
    --color-bg: var(--bg-light);
    --color-text: var(--text-light);
    --color-heading: var(--heading-light);
    --glass-bg: var(--glass-bg-light);
    --glass-border: var(--glass-border-light);
    --bg-mesh: var(--mesh-light);
    --shadow-color: rgba(0, 0, 0, 0.06);
    --header-bg: rgba(255, 255, 255, 0.7);
    
    /* Accent configuration */
    --accent-color: var(--blue-primary);
    --accent-rgb: var(--blue-primary-rgb);
    
    /* Typography clamp scales */
    --fs-h1: clamp(2.2rem, 1.2rem + 4.5vw, 4rem);
    --fs-h2: clamp(1.8rem, 1.1rem + 2.5vw, 2.5rem);
    --fs-h3: clamp(1.3rem, 1rem + 1.2vw, 1.8rem);
    --fs-body: 1rem;
    --fs-small: 0.875rem;
    
    /* Spacers */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4.5rem;
    
    /* Transition defaults */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    @media (prefers-color-scheme: dark) {
      --color-bg: var(--bg-dark);
      --color-text: var(--text-dark);
      --color-heading: var(--heading-dark);
      --glass-bg: var(--glass-bg-dark);
      --glass-border: var(--glass-border-dark);
      --bg-mesh: var(--mesh-dark);
      --shadow-color: rgba(0, 0, 0, 0.4);
    }
  }

  /* Explicit HTML theme overrides (Guarantees JS Toggle works correctly) */
  html[data-user-color-scheme="light"] {
    color-scheme: light;
    --color-bg: var(--bg-light);
    --color-text: var(--text-light);
    --color-heading: var(--heading-light);
    --glass-bg: var(--glass-bg-light);
    --glass-border: var(--glass-border-light);
    --bg-mesh: var(--mesh-light);
    --shadow-color: rgba(0, 0, 0, 0.06);
    --header-bg: rgba(255, 255, 255, 0.7);
  }

  html[data-user-color-scheme="dark"] {
    color-scheme: dark;
    --color-bg: var(--bg-dark);
    --color-text: var(--text-dark);
    --color-heading: var(--heading-dark);
    --glass-bg: var(--glass-bg-dark);
    --glass-border: var(--glass-border-dark);
    --bg-mesh: var(--mesh-dark);
    --shadow-color: rgba(0, 0, 0, 0.4);
    --header-bg: rgba(7, 9, 14, 0.7);
  }

  /* Override with light-dark() where supported */
  @supports (color: light-dark(white, black)) {
    :root {
      --color-bg: light-dark(var(--bg-light), var(--bg-dark));
      --color-text: light-dark(var(--text-light), var(--text-dark));
      --color-heading: light-dark(var(--heading-light), var(--heading-dark));
      --glass-bg: light-dark(var(--glass-bg-light), var(--glass-bg-dark));
      --glass-border: light-dark(var(--glass-border-light), var(--glass-border-dark));
      --bg-mesh: light-dark(var(--mesh-light), var(--mesh-dark));
      --shadow-color: light-dark(rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0.4));
      --header-bg: light-dark(rgba(255, 255, 255, 0.7), rgba(7, 9, 14, 0.7));
    }
  }

  body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: var(--fs-body);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    background-image: var(--bg-mesh);
    background-attachment: fixed;
    background-size: cover;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
  }

  h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    color: var(--color-heading);
    font-weight: 700;
    line-height: 1.2;
    text-wrap: balance;
  }

  p, li {
    text-wrap: pretty;
  }
  
  a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
  }

  img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
  }

  /* Custom Scrollbar */
  html {
    scrollbar-color: var(--accent-color) transparent;
    scrollbar-width: thin;
  }
  
  @supports not (scrollbar-color: auto) {
    body::-webkit-scrollbar {
      width: 8px;
      height: 8px;
    }
    body::-webkit-scrollbar-thumb {
      background: var(--accent-color);
      border-radius: 4px;
    }
    body::-webkit-scrollbar-track {
      background: transparent;
    }
  }

  /* Accessible focus indicators */
  :focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 4px;
  }
}

@layer theme {
  /* Layout utilities */
  .container {
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: var(--space-md);
  }

  .section {
    padding-block: clamp(1.75rem, 5vh, 3rem);
  }

  .section-title {
    font-size: var(--fs-h2);
    margin-block-end: var(--space-lg);
    position: relative;
    display: inline-block;
  }

  .section-title::after {
    content: "";
    position: absolute;
    inset-block-start: 110%;
    inset-inline-start: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--blue-primary), var(--violet-primary));
    border-radius: 2px;
  }
}

@layer components {
  /* Glass Cards */
  .glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--space-md);
    box-shadow: 0 10px 30px var(--shadow-color);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  }

  .glass-card:hover {
    transform: translateY(-4px);
    border-color: rgba(var(--blue-primary-rgb), 0.25);
    box-shadow: 0 15px 35px rgba(var(--blue-primary-rgb), 0.08);
  }

  /* Sticky Navigation Header */
  .header {
    position: fixed;
    inset-block-start: 0;
    inset-inline: 0;
    z-index: 100;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-block-end: 1px solid var(--glass-border);
    transition: background-color var(--transition-normal);
  }

  .nav-container {
    display: flex;
    align-items: center;
    height: 70px;
  }

  .nav-container nav {
    margin-inline-start: auto;
  }

  .logo {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .logo-img {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--blue-primary);
    box-shadow: 0 0 10px rgba(var(--blue-primary-rgb), 0.2);
    transition: transform var(--transition-fast) ease, border-color var(--transition-fast) ease, box-shadow var(--transition-fast) ease;
  }

  .logo-img:hover {
    transform: scale(1.08);
    border-color: var(--violet-primary);
    box-shadow: 0 0 15px rgba(var(--violet-primary-rgb), 0.4);
  }

  .nav-links {
    display: flex;
    gap: var(--space-md);
    align-items: center;
    list-style: none;
  }

  .nav-link {
    font-size: var(--fs-small);
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    position: relative;
  }

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

  .nav-link::after {
    content: "";
    position: absolute;
    inset-block-start: 85%;
    inset-inline: 0.75rem;
    height: 2px;
    background: var(--blue-primary);
    transform: scaleX(0);
    transition: transform var(--transition-fast) ease;
  }

  .nav-link.active::after {
    transform: scaleX(1);
  }

  .nav-link.highlight-link {
    border: 1px solid var(--blue-primary);
    color: var(--blue-primary);
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
    transition: background-color var(--transition-fast) ease, color var(--transition-fast) ease, border-color var(--transition-fast) ease;
  }

  .nav-link.highlight-link:hover {
    background-color: var(--blue-primary);
    color: white !important;
    border-color: var(--blue-primary);
  }

  .nav-link.highlight-link::after {
    display: none;
  }

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

  .menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-heading);
    margin: 5px 0;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
  }

  /* Themes Switcher Widget */
  .theme-toggle-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    cursor: pointer;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
    margin-inline-start: var(--space-md);
  }

  .theme-toggle-btn:hover {
    border-color: var(--blue-primary);
    transform: scale(1.05);
  }

  .theme-toggle-btn svg {
    width: 18px;
    height: 18px;
    fill: var(--color-heading);
  }

  .sun-icon {
    display: block;
  }
  .moon-icon {
    display: none;
  }

  /* Dark mode specific style overrides managed via JS setting class on html */
  html[data-user-color-scheme="dark"] .sun-icon {
    display: none;
  }
  html[data-user-color-scheme="dark"] .moon-icon {
    display: block;
  }

  /* Hero Section */
  .hero-section {
    min-block-size: 100vh;
    display: flex;
    align-items: center;
    padding-block-start: 100px;
  }

  .hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-lg);
    align-items: center;
  }

  .hero-text h1 {
    font-size: var(--fs-h1);
    margin-block-end: 0.2rem;
  }

  .hero-gradient-text {
    background: linear-gradient(135deg, var(--blue-primary), var(--violet-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .hero-subtitle {
    font-family: 'Outfit', sans-serif;
    font-size: var(--fs-h3);
    font-weight: 500;
    color: var(--blue-primary);
    margin-block-end: var(--space-sm);
  }

  .hero-desc {
    max-width: 600px;
    margin-block-end: var(--space-md);
  }

  .hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-block-end: var(--space-md);
    font-size: var(--fs-small);
  }

  .meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
  }

  .meta-item svg {
    width: 14px;
    height: 14px;
    fill: var(--accent-color);
  }

  .hero-stats {
    display: flex;
    gap: var(--space-md);
    margin-block-end: var(--space-md);
    flex-wrap: wrap;
  }

  .stat-card {
    flex: 1 1 140px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: var(--space-sm) var(--space-md);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px var(--shadow-color);
    transition: transform var(--transition-fast) ease, border-color var(--transition-fast) ease;
  }

  .stat-card:hover {
    transform: translateY(-3px);
    border-color: rgba(var(--blue-primary-rgb), 0.3);
  }

  .stat-number {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--blue-primary), var(--violet-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
  }

  .stat-label {
    font-size: var(--fs-small);
    font-weight: 500;
    color: var(--color-text);
    text-align: center;
    margin-top: 0.25rem;
    opacity: 0.9;
  }

  .hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  /* Button Design */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.6rem;
    font-weight: 600;
    border-radius: 12px;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
    font-size: var(--fs-small);
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--blue-primary), var(--violet-primary));
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(var(--blue-primary-rgb), 0.3);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--blue-primary-rgb), 0.4);
    filter: brightness(1.1);
  }

  .btn-secondary {
    background: var(--glass-bg);
    color: var(--color-heading);
    border: 1px solid var(--glass-border);
  }

  .btn-secondary:hover {
    transform: translateY(-2px);
    border-color: var(--blue-primary);
    background: rgba(var(--blue-primary-rgb), 0.05);
  }

  /* Avatar Card */
  .hero-image-container {
    display: flex;
    justify-content: center;
    position: relative;
  }

  .avatar-card {
    position: relative;
    width: 320px;
    aspect-ratio: 1;
    border-radius: 30px;
    overflow: hidden;
    box-shadow: 0 20px 40px var(--shadow-color);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
  }

  .profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }

  .avatar-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(var(--blue-primary-rgb), 0.1), rgba(var(--violet-primary-rgb), 0.1));
    color: var(--color-heading);
  }

  .avatar-placeholder svg {
    width: 80px;
    height: 80px;
    fill: var(--blue-primary);
    margin-block-end: var(--space-xs);
    opacity: 0.8;
  }

  .avatar-placeholder span {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 1.2rem;
  }

  /* Achievement Cards Grid */
  .achievements-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-block-end: var(--space-md);
  }

  .achievement-card {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-md);
  }

  .achievement-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(var(--blue-primary-rgb), 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .achievement-icon svg {
    width: 24px;
    height: 24px;
    fill: var(--blue-primary);
  }

  .achievement-content h3 {
    font-size: 1.1rem;
    margin-block-end: 0.25rem;
  }

  .achievement-content p {
    font-size: var(--fs-small);
  }

  /* Skills Component */
  .skills-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
  }

  .skills-category h3 {
    font-size: 1.2rem;
    margin-block-end: var(--space-sm);
    color: var(--blue-primary);
    border-block-end: 1px solid var(--glass-border);
    padding-block-end: 0.5rem;
  }

  .skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    list-style: none;
  }

  .skill-badge {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 0.5rem 1rem;
    border-radius: 12px;
    font-size: var(--fs-small);
    font-weight: 500;
    transition: transform var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
    cursor: default;
  }

  .skill-badge:hover {
    transform: scale(1.05);
    border-color: var(--blue-primary);
    background: rgba(var(--blue-primary-rgb), 0.05);
  }

  /* Experience Timeline */
  .timeline {
    position: relative;
    max-width: 900px;
    margin-inline: auto;
    padding-inline-start: 2rem;
  }

  .timeline::before {
    content: "";
    position: absolute;
    inset-block: 0;
    inset-inline-start: 7px;
    width: 2px;
    background: linear-gradient(180deg, var(--blue-primary), var(--violet-primary));
  }

  .timeline-item {
    position: relative;
    margin-block-end: var(--space-lg);
  }

  .timeline-dot {
    position: absolute;
    inset-inline-start: calc(-2rem - 6px + 7px);
    inset-block-start: 8px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--blue-primary);
    border: 3px solid var(--color-bg);
    box-shadow: 0 0 0 3px rgba(var(--blue-primary-rgb), 0.2);
    z-index: 2;
  }

  .timeline-item:nth-child(even) .timeline-dot {
    background: var(--violet-primary);
    box-shadow: 0 0 0 3px rgba(var(--violet-primary-rgb), 0.2);
  }

  .timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-block-end: 0.5rem;
  }

  .timeline-role {
    font-size: 1.25rem;
    font-weight: 700;
  }

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

  .timeline-meta {
    font-size: var(--fs-small);
    color: var(--color-text);
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
  }

  .timeline-desc {
    margin-block: 0.75rem;
    font-size: var(--fs-small);
    font-style: italic;
  }

  .timeline-bullets {
    list-style-type: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
  }

  .timeline-bullets li {
    position: relative;
    padding-inline-start: 1.25rem;
    font-size: var(--fs-small);
  }

  .timeline-bullets li::before {
    content: "•";
    position: absolute;
    inset-inline-start: 0;
    color: var(--blue-primary);
    font-size: 1.2rem;
    line-height: 1;
  }

  /* Projects Component styling */
  .projects-controls {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-block-end: var(--space-lg);
  }

  .project-filter-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--color-heading);
    padding: 0.6rem 1.2rem;
    border-radius: 12px;
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
    font-size: var(--fs-small);
    transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  }

  .project-filter-btn.active, .project-filter-btn:hover {
    background: var(--blue-primary);
    border-color: var(--blue-primary);
    color: white;
    transform: translateY(-1px);
  }

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

  .project-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
  }

  .project-img-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 12px;
    overflow: hidden;
    margin-block-end: var(--space-sm);
    background: linear-gradient(135deg, rgba(var(--blue-primary-rgb), 0.05), rgba(var(--violet-primary-rgb), 0.05));
    border: 1px solid var(--glass-border);
  }

  .project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
  }

  .project-placeholder svg {
    width: 64px;
    height: 64px;
    fill: var(--blue-primary);
    opacity: 0.8;
    transition: transform var(--transition-normal) ease, fill var(--transition-normal) ease, opacity var(--transition-normal) ease;
  }

  .project-card:hover .project-placeholder svg {
    transform: scale(1.1);
    fill: var(--violet-primary);
    opacity: 1;
  }

  .project-card-content {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
  }

  .project-card-title {
    font-size: 1.25rem;
    margin-block-end: 0.5rem;
  }

  .project-card-date {
    font-size: 0.8rem;
    color: var(--color-text);
    margin-block-end: 0.5rem;
    opacity: 0.8;
  }

  .project-card-desc {
    font-size: var(--fs-small);
    margin-block-end: var(--space-sm);
    flex-grow: 1;
  }

  .project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    list-style: none;
    margin-block-end: var(--space-sm);
  }

  .project-tag {
    background: rgba(var(--blue-primary-rgb), 0.08);
    color: var(--blue-primary);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
  }

  .project-links {
    display: flex;
    gap: var(--space-sm);
  }

  .project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: var(--fs-small);
    font-weight: 600;
    color: var(--blue-primary);
  }

  .project-link:hover {
    color: var(--violet-primary);
  }

  .project-link svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
  }

  /* Contact Form styling */
  .contact-wrapper {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: var(--space-lg);
    align-items: flex-start;
  }

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

  .contact-info-desc {
    margin-block-end: var(--space-xs);
  }

  .contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
  }

  .contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
  }

  .contact-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: rgba(var(--blue-primary-rgb), 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .contact-icon svg {
    width: 18px;
    height: 18px;
    fill: var(--blue-primary);
  }

  .contact-method-text h4 {
    font-size: var(--fs-small);
    font-weight: 600;
    opacity: 0.8;
  }

  .contact-method-text p {
    font-size: var(--fs-small);
    font-weight: 500;
  }

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

  .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
  }

  .form-group label {
    font-size: var(--fs-small);
    font-weight: 600;
    color: var(--color-heading);
  }

  .form-control {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--color-heading);
    padding: 0.8rem var(--space-sm);
    border-radius: 10px;
    font-family: inherit;
    font-size: var(--fs-small);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  }

  .form-control:focus {
    outline: none;
    border-color: var(--blue-primary);
    box-shadow: 0 0 0 3px rgba(var(--blue-primary-rgb), 0.15);
  }

  /* Style elements on invalid after user interacts */
  .form-control:user-invalid {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
  }

  textarea.form-control {
    resize: vertical;
    min-block-size: 120px;
  }

  /* Footer */
  .footer {
    border-block-start: 1px solid var(--glass-border);
    padding-block: var(--space-md);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    text-align: center;
    font-size: var(--fs-small);
  }

  .footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
  }
}

@layer utilities {
  /* Scroll margin-top for target offset */
  section[id] {
    scroll-margin-block-start: 80px;
  }

  /* Fade-in scroll animations using Scroll-Driven Animations where supported */
  @supports (animation-range: entry 10% cover 30%) {
    .scroll-fade {
      animation: reveal linear both;
      animation-timeline: view();
      animation-range: entry 10% cover 30%;
    }

    @keyframes reveal {
      from {
        opacity: 0;
        transform: translateY(30px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
  }

  /* Grid helper utilities */
  .grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-md);
  }

  .grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
  }
}

/* Responsive Breakpoints & Mobile Adjustments */
@media (max-width: 992px) {
  :root {
    --fs-h1: 2.8rem;
    --fs-h2: 2.2rem;
    --fs-h3: 1.5rem;
  }

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

  .hero-text {
    order: 2;
  }

  .hero-image-container {
    order: 1;
  }

  .hero-desc {
    margin-inline: auto;
  }

  .hero-meta {
    justify-content: center;
  }

  .hero-ctas {
    justify-content: center;
  }

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

@media (max-width: 768px) {
  /* Navigation Link styles for overlay menu */
  .menu-toggle {
    display: block;
    z-index: 110;
    margin-inline-start: var(--space-sm);
  }

  .nav-links {
    position: fixed;
    inset-block-start: 0;
    inset-inline-end: 0;
    height: 100vh;
    width: 280px;
    background: var(--color-bg);
    border-inline-start: 1px solid var(--glass-border);
    flex-direction: column;
    padding: var(--space-xl) var(--space-md) var(--space-md);
    gap: var(--space-sm);
    z-index: 105;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
  }

  .nav-links.open {
    transform: translateX(0);
    box-shadow: -10px 0 30px var(--shadow-color);
  }

  .theme-toggle-btn {
    margin-inline-start: auto;
    z-index: 110;
  }

  .hamburger-active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

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

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

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