/* Import modern fonts from Google Fonts */
@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');

/* --- CASCADE LAYERS SETUP --- */
@layer reset, base, theme, layout, components, utilities;

@layer reset {
  /* Box sizing and margin resets */
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  /* Accessible media elements */
  img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
    aspect-ratio: attr(width) / attr(height);
  }

  /* Form and button defaults */
  input, button, textarea, select {
    font: inherit;
    color: inherit;
    background: transparent;
    border: none;
  }

  /* List resets */
  ul, ol {
    list-style: none;
  }

  /* Link resets */
  a {
    text-decoration: none;
    color: inherit;
  }
}

@layer base {
  :root {
    color-scheme: dark light;
    
    /* Font Families */
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Transition defaults */
    --transition-speed-fast: 0.2s;
    --transition-speed-normal: 0.3s;
    --transition-speed-slow: 0.5s;
    --transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* Layout Tokens */
    --max-width-content: 1200px;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    
    /* Setup interpolation spaces */
    --in-oklab: ;
    --in-oklch: ;
  }

  @supports (linear-gradient(in oklab, white, black)) {
    :root {
      --in-oklab: in oklab;
      --in-oklch: in oklch;
    }
  }

  html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
  }

  body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    background-color: var(--color-bg);
    color: var(--color-text);
    overflow-x: hidden;
    position: relative;
    transition: background-color var(--transition-speed-normal) var(--transition-easing),
                color var(--transition-speed-normal) var(--transition-easing);
  }

  /* Typography scale */
  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-heading);
    text-wrap: balance;
  }

  h1 {
    font-size: clamp(2.5rem, 1.5rem + 5vw, 4.5rem);
  }

  h2 {
    font-size: clamp(1.8rem, 1.2rem + 3vw, 2.8rem);
    margin-bottom: 1.5rem;
  }

  h3 {
    font-size: clamp(1.4rem, 1.1rem + 1.5vw, 2rem);
  }

  p {
    text-wrap: pretty;
    margin-bottom: 1.25rem;
    color: var(--color-text-muted);
  }

  /* Focus rings customization */
  a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
  }

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

@layer theme {
  /* Default Dark Mode (Premium slate/indigo/violet palette) */
  :root, [data-theme="dark"] {
    color-scheme: dark;
    --color-bg: #090d16;
    --color-bg-subtle: #0f172a;
    --color-bg-glass: rgba(15, 23, 42, 0.75);
    
    --color-text: #e2e8f0;
    --color-text-muted: #94a3b8;
    --color-heading: #f8fafc;
    
    --color-primary: #6366f1; /* Indigo */
    --color-primary-rgb: 99, 102, 241;
    --color-accent: #a855f7;  /* Purple */
    --color-accent-rgb: 168, 85, 247;
    
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    
    --shadow-soft: 0 4px 30px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.2);
    
    --glass-blur: blur(12px);
    --glass-border: 1px solid rgba(255, 255, 255, 0.08);
    --gradient-hero: linear-gradient(135deg var(--in-oklab), #090d16 30%, #1e1b4b 70%, #311042 100%);
    --gradient-accent: linear-gradient(135deg var(--in-oklch), var(--color-primary) 0%, var(--color-accent) 100%);
  }

  /* Light Mode (Premium clean/soft modern palette) */
  [data-theme="light"] {
    color-scheme: light;
    --color-bg: #f8fafc;
    --color-bg-subtle: #f1f5f9;
    --color-bg-glass: rgba(248, 250, 252, 0.85);
    
    --color-text: #334155;
    --color-text-muted: #64748b;
    --color-heading: #0f172a;
    
    --color-primary: #4f46e5;
    --color-primary-rgb: 79, 70, 229;
    --color-accent: #9333ea;
    --color-accent-rgb: 147, 51, 234;
    
    --color-border: rgba(15, 23, 42, 0.08);
    --color-border-hover: rgba(15, 23, 42, 0.15);
    
    --shadow-soft: 0 4px 30px rgba(15, 23, 42, 0.05);
    --shadow-glow: 0 0 20px rgba(79, 70, 229, 0.1);
    
    --glass-blur: blur(12px);
    --glass-border: 1px solid rgba(15, 23, 42, 0.06);
    --gradient-hero: linear-gradient(135deg var(--in-oklab), #f8fafc 40%, #e0e7ff 80%, #fae8ff 100%);
    --gradient-accent: linear-gradient(135deg var(--in-oklch), var(--color-primary) 0%, var(--color-accent) 100%);
  }

  /* Respect system settings by default, override using JS toggle */
  @media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
      --color-bg: #f8fafc;
      --color-bg-subtle: #f1f5f9;
      --color-bg-glass: rgba(248, 250, 252, 0.85);
      
      --color-text: #334155;
      --color-text-muted: #64748b;
      --color-heading: #0f172a;
      
      --color-primary: #4f46e5;
      --color-primary-rgb: 79, 70, 229;
      --color-accent: #9333ea;
      --color-accent-rgb: 147, 51, 234;
      
      --color-border: rgba(15, 23, 42, 0.08);
      --color-border-hover: rgba(15, 23, 42, 0.15);
      
      --shadow-soft: 0 4px 30px rgba(15, 23, 42, 0.05);
      --shadow-glow: 0 0 20px rgba(79, 70, 229, 0.1);
      
      --glass-blur: blur(12px);
      --glass-border: 1px solid rgba(15, 23, 42, 0.06);
      --gradient-hero: linear-gradient(135deg var(--in-oklab), #f8fafc 40%, #e0e7ff 80%, #fae8ff 100%);
      --gradient-accent: linear-gradient(135deg var(--in-oklch), var(--color-primary) 0%, var(--color-accent) 100%);
    }
  }
}

@layer layout {
  /* Custom Background Canvas */
  #bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
  }

  /* Grid wrapper for structural sections */
  .section {
    padding-block: clamp(4rem, 2rem + 6vh, 8rem);
    position: relative;
  }

  .container {
    max-width: var(--max-width-content);
    margin-inline: auto;
    padding-inline: 1.5rem;
  }

  .header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding-block: 1.25rem;
    background-color: transparent;
    transition: padding-block var(--transition-speed-fast) var(--transition-easing),
                background-color var(--transition-speed-fast) var(--transition-easing),
                backdrop-filter var(--transition-speed-fast) var(--transition-easing),
                border-bottom var(--transition-speed-fast) var(--transition-easing);
  }

  .header--scrolled {
    padding-block: 0.85rem;
    background-color: var(--color-bg-glass);
    backdrop-filter: var(--glass-blur);
    border-bottom: var(--glass-border);
  }

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

  .nav__logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
  }

  .nav__menu {
    display: flex;
    align-items: center;
    gap: 2rem;
  }

  .nav__link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    transition: color var(--transition-speed-fast) var(--transition-easing);
    position: relative;
  }

  .nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: width var(--transition-speed-fast) var(--transition-easing);
  }

  .nav__link:hover {
    color: var(--color-primary);
  }

  .nav__link:hover::after,
  .nav__link--active::after {
    width: 100%;
  }

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

  /* Footer */
  .footer {
    padding-block: 3rem;
    background-color: var(--color-bg-subtle);
    border-top: var(--glass-border);
    text-align: center;
  }

  .footer__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
  }

  .footer__socials {
    display: flex;
    gap: 1.5rem;
  }

  @media (max-width: 768px) {
    .btn-menu-toggle {
      display: flex;
    }
    .header {
      position: fixed;
      padding-block: 1rem;
      background-color: var(--color-bg-glass);
      backdrop-filter: var(--glass-blur);
      border-bottom: var(--glass-border);
    }
    .header--scrolled {
      padding-block: 1rem;
    }
    .nav {
      display: flex;
      flex-direction: row;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .nav__menu {
      position: fixed;
      top: 0;
      right: -100%;
      width: min(300px, 80vw);
      height: 100vh;
      background: var(--color-bg-glass);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-left: var(--glass-border);
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 2.5rem;
      z-index: 105;
      transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
      padding: 2rem;
      box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
    }
    .nav__menu--open {
      right: 0;
    }
    .nav__link {
      font-size: 1.2rem;
      font-weight: 600;
    }
    .nav__controls {
      margin-inline-start: auto;
      margin-inline-end: 1.25rem;
      gap: 0.75rem;
    }
    #nav-btn-contact {
      display: none;
    }
    main {
      padding-top: 5rem !important;
    }
    .hero-section {
      padding-top: 5rem;
    }
  }
}

@layer components {
  /* Hamburger Menu Toggle Button (desktop hidden) */
  .btn-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 26px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 110;
    padding: 0;
  }

  .btn-menu-toggle__line {
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 1px;
    transition: transform var(--transition-speed-fast) var(--transition-easing),
                opacity var(--transition-speed-fast) var(--transition-easing),
                background-color var(--transition-speed-fast) var(--transition-easing);
  }
  
  /* Active states turning hamburger into X */
  .btn-menu-toggle[aria-expanded="true"] .btn-menu-toggle__line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .btn-menu-toggle[aria-expanded="true"] .btn-menu-toggle__line:nth-child(2) {
    opacity: 0;
  }

  .btn-menu-toggle[aria-expanded="true"] .btn-menu-toggle__line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  /* Social navbar links */
  .nav__social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: color var(--transition-speed-fast) var(--transition-easing),
                transform var(--transition-speed-fast) var(--transition-bounce);
  }

  .nav__social-link:hover {
    color: var(--color-primary);
    transform: translateY(-2px) scale(1.1);
  }

  .nav__social-link svg {
    width: 20px;
    height: 20px;
  }

  /* Toggle buttons */
  .btn-theme {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-border);
    border: var(--glass-border);
    cursor: pointer;
    transition: transform var(--transition-speed-fast) var(--transition-bounce),
                background-color var(--transition-speed-fast) var(--transition-easing);
  }

  .btn-theme:hover {
    transform: scale(1.1);
    background-color: var(--color-border-hover);
  }

  .btn-theme svg {
    width: 20px;
    height: 20px;
    fill: var(--color-text);
  }

  .btn-theme__icon-sun {
    display: var(--sun-display, none);
  }
  
  .btn-theme__icon-moon {
    display: var(--moon-display, block);
  }

  [data-theme="light"] {
    --sun-display: block;
    --moon-display: none;
  }

  @media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
      --sun-display: block;
      --moon-display: none;
    }
  }

  /* Main Button styles */
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: transform var(--transition-speed-fast) var(--transition-bounce),
                box-shadow var(--transition-speed-fast) var(--transition-easing),
                background var(--transition-speed-fast) var(--transition-easing),
                color var(--transition-speed-fast) var(--transition-easing);
    box-shadow: var(--shadow-soft);
  }

  .btn:hover {
    transform: translateY(-2px);
  }

  .btn:active {
    transform: translateY(1px);
  }

  .btn--primary {
    background: var(--gradient-accent);
    color: #ffffff;
  }

  .btn--primary:hover {
    box-shadow: var(--shadow-glow), var(--shadow-soft);
  }

  .btn--secondary {
    background-color: var(--color-bg-glass);
    border: var(--glass-border);
    color: var(--color-text);
  }

  .btn--secondary:hover {
    background-color: var(--color-border-hover);
    border-color: var(--color-primary);
  }

  /* Hero Component */
  .hero-section {
    min-block-size: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    position: relative;
    padding-top: 6rem;
  }

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

  @media (max-width: 900px) {
    .hero-grid {
      grid-template-columns: 1fr;
      text-align: center;
      gap: 2rem;
    }
  }

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

  @media (max-width: 900px) {
    .hero__content {
      align-items: center;
    }
  }

  .hero__badge {
    padding: 0.35rem 1rem;
    background-color: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--color-primary);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    display: inline-block;
    letter-spacing: 0.5px;
    text-transform: uppercase;
  }

  .hero__title {
    margin-bottom: 1rem;
    line-height: 1.1;
  }

  .hero__title span {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .hero__subtitle {
    font-size: clamp(1.1rem, 1rem + 1vw, 1.6rem);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 1.5rem;
  }

  .hero__description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 600px;
  }

  .hero__buttons {
    display: flex;
    gap: 1.25rem;
  }

  @media (max-width: 600px) {
    .hero__buttons {
      flex-direction: column;
      align-items: center;
      width: 100%;
      gap: 0.75rem;
    }
    .hero__buttons .btn {
      width: 100%;
      justify-content: center;
    }
  }

  .hero__image-container {
    display: flex;
    justify-content: center;
    position: relative;
  }

  .hero__image-wrapper {
    position: relative;
    width: min(350px, 80vw);
    aspect-ratio: 1;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    background: var(--gradient-accent);
    overflow: hidden;
    animation: blob-animate 8s ease-in-out infinite alternate;
    box-shadow: var(--shadow-glow), var(--shadow-soft);
  }

  .hero__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  @keyframes blob-animate {
    0% {
      border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    }
    50% {
      border-radius: 50% 50% 30% 70% / 50% 60% 40% 60%;
    }
    100% {
      border-radius: 60% 40% 60% 40% / 40% 50% 50% 60%;
    }
  }

  /* Glassmorphic cards */
  .card {
    background: var(--color-bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    transition: transform var(--transition-speed-normal) var(--transition-bounce),
                border-color var(--transition-speed-normal) var(--transition-easing),
                box-shadow var(--transition-speed-normal) var(--transition-easing);
  }

  .card:hover {
    transform: translateY(-6px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-glow), var(--shadow-soft);
  }

  /* Research Interests Component */
  .interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
    gap: 1.5rem;
  }

  @media (min-width: 900px) {
    .interests-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  .interest-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--color-bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-soft);
    transition: transform var(--transition-speed-normal) var(--transition-bounce),
                border-color var(--transition-speed-normal) var(--transition-easing),
                box-shadow var(--transition-speed-normal) var(--transition-easing),
                opacity var(--transition-speed-normal) var(--transition-easing);
    opacity: 0; /* Animated in via IntersectionObserver */
    transform: translateY(15px);
  }

  .interest-card--visible {
    opacity: 1;
    transform: translateY(0);
  }

  .interest-card:hover {
    transform: translateY(-5px);
    border-color: var(--interest-color);
    box-shadow: var(--shadow-glow), var(--shadow-soft);
  }

  .interest-card__icon-wrapper {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-sm);
    background-color: var(--interest-bg);
    color: var(--interest-color);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform var(--transition-speed-normal) var(--transition-bounce);
  }

  .interest-card__icon-wrapper svg {
    width: 20px;
    height: 20px;
  }

  .interest-card:hover .interest-card__icon-wrapper {
    transform: scale(1.1) rotate(5deg);
  }

  .interest-card__title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-heading);
    line-height: 1.3;
  }

  /* Project Grid & Filtering */
  .filter-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
  }

  .btn-filter {
    padding: 0.5rem 1.25rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    border: var(--glass-border);
    background-color: var(--color-bg-glass);
    cursor: pointer;
    transition: all var(--transition-speed-fast) var(--transition-easing);
  }

  .btn-filter:hover,
  .btn-filter--active {
    background: var(--gradient-accent);
    color: #ffffff;
    border-color: transparent;
    box-shadow: var(--shadow-glow);
  }

  .projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
    gap: 2rem;
  }

  .project-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    padding: 0;
  }

  .project-card__img-container {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    border-bottom: var(--glass-border);
  }

  .project-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-speed-normal) var(--transition-easing);
  }

  .project-card:hover .project-card__img {
    transform: scale(1.05);
  }

  .project-card__body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
  }

  .project-card__tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
  }

  .project-card__tag {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
  }

  .project-card__title {
    margin-bottom: 0.75rem;
  }

  .project-card__desc {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
  }

  .project-card__link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-weight: 600;
    color: var(--color-primary);
    font-size: 0.9rem;
    transition: gap var(--transition-speed-fast) var(--transition-easing);
  }

  .project-card__link:hover {
    gap: 0.55rem;
  }

  /* Blog Sections */
  .blog-highlight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
    gap: 2rem;
  }

  .blog-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    overflow: hidden;
    padding-top: 2.5rem; /* Balance layout with top gradient bar */
  }

  /* Sleek top highlight bar gradient */
  .blog-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-accent);
    opacity: 0.7;
    transition: height var(--transition-speed-normal) var(--transition-easing),
                opacity var(--transition-speed-normal) var(--transition-easing);
  }

  .blog-card:hover::before {
    height: 6px;
    opacity: 1;
  }

  .blog-card__meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.825rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 0.85rem;
  }

  .blog-card__meta time {
    font-family: var(--font-heading);
    letter-spacing: 0.2px;
  }

  .blog-card__meta span:nth-child(2) {
    color: var(--color-primary);
    opacity: 0.6;
    font-size: 1.25rem;
    line-height: 1;
  }

  .blog-card__title {
    margin-bottom: 0.85rem;
    font-size: clamp(1.2rem, 1.1rem + 0.8vw, 1.5rem);
    line-height: 1.35;
    font-weight: 700;
  }

  .blog-card__title a {
    color: var(--color-heading);
    transition: color var(--transition-speed-fast) var(--transition-easing);
  }

  .blog-card__title a:hover {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .blog-card__excerpt {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-muted);
    margin-bottom: 1.75rem;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    line-clamp: 3;
    overflow: hidden;
  }

  .blog-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: var(--glass-border);
    padding-top: 1.25rem;
    margin-top: auto;
  }

  .blog-card__tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
  }

  .blog-card__tag {
    font-size: 0.725rem;
    font-weight: 600;
    padding: 0.25rem 0.65rem;
    border-radius: 6px;
    background-color: rgba(var(--color-primary-rgb), 0.08);
    border: 1px solid rgba(var(--color-primary-rgb), 0.15);
    color: var(--color-primary);
    transition: all var(--transition-speed-fast) var(--transition-easing);
  }

  [data-theme="light"] .blog-card__tag {
    background-color: rgba(var(--color-primary-rgb), 0.05);
    border: 1px solid rgba(var(--color-primary-rgb), 0.1);
  }

  .blog-card__tag:hover {
    background-color: var(--color-primary);
    color: #ffffff;
    border-color: transparent;
    transform: translateY(-1.5px);
    box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.25);
  }

  /* Contact Form styling */
  .contact-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 3rem;
  }

  @media (max-width: 900px) {
    .contact-grid {
      grid-template-columns: 1fr;
      gap: 2.5rem;
    }
  }

  .contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
  }

  .contact-method {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
  }

  .contact-method__icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: rgba(99, 102, 241, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    flex-shrink: 0;
  }

  .contact-method__title {
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--color-heading);
    margin-bottom: 0.25rem;
  }

  .contact-method__val {
    font-size: 0.95rem;
  }

  .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
  }

  .form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-heading);
  }

  .form-control {
    background-color: rgba(255, 255, 255, 0.03);
    border: var(--glass-border);
    border-radius: var(--border-radius-sm);
    padding: 0.85rem 1rem;
    color: var(--color-text);
    transition: all var(--transition-speed-fast) var(--transition-easing);
  }

  [data-theme="light"] .form-control {
    background-color: rgba(0, 0, 0, 0.02);
  }

  .form-control:focus {
    background-color: transparent;
    border-color: var(--color-primary);
    outline: none;
    box-shadow: var(--shadow-glow);
  }

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

  /* Blog Details View & Content Styles */
  .blog-header {
    text-align: center;
    max-width: 800px;
    margin: 5rem auto 3rem;
  }

  .blog-header__meta {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
  }

  .blog-header__title {
    margin-bottom: 1.5rem;
    font-size: clamp(2rem, 1.5rem + 3vw, 3.5rem);
  }

  .blog-content {
    max-width: 800px;
    margin-inline: auto;
    background: var(--color-bg-glass);
    backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: 3rem;
    box-shadow: var(--shadow-soft);
  }

  @media (max-width: 600px) {
    .blog-content {
      padding: 1.5rem;
    }
  }

  /* Styling rendered Markdown inside blog post */
  .blog-body h2 {
    font-size: 1.8rem;
    margin: 2rem 0 1rem;
    border-bottom: var(--glass-border);
    padding-bottom: 0.5rem;
  }

  .blog-body h3 {
    font-size: 1.4rem;
    margin: 1.5rem 0 0.75rem;
  }

  .blog-body p {
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
  }

  .blog-body ul, .blog-body ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
  }

  .blog-body ul {
    list-style-type: disc;
  }

  .blog-body ol {
    list-style-type: decimal;
  }

  .blog-body li {
    margin-bottom: 0.5rem;
    color: var(--color-text-muted);
  }

  .blog-body blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: 1.25rem;
    font-style: italic;
    color: var(--color-text-muted);
    margin: 1.5rem 0;
  }

  .blog-body pre {
    background-color: #0b0f19;
    border-radius: var(--border-radius-sm);
    padding: 1.25rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    border: var(--glass-border);
    position: relative;
  }

  .blog-body code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
    padding: 0.15em 0.35em;
    border-radius: 4px;
  }

  .blog-body pre code {
    background-color: transparent;
    color: #f8fafc;
    padding: 0;
    display: block;
    line-height: 1.5;
  }

  /* Copy Code Button */
  .code-copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #94a3b8;
    cursor: pointer;
    transition: all var(--transition-speed-fast) var(--transition-easing);
  }

  .code-copy-btn:hover {
    background-color: var(--color-primary);
    color: white;
  }

  .code-copy-btn--copied {
    background-color: #22c55e;
    color: white;
  }

  .blog-reader-view {
    display: none;
  }

  .blog-reader-view--active {
    display: block;
  }

  .blog-video-embed {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    margin-bottom: 2.5rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    border: var(--glass-border);
  }

  .blog-video-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
  }

  .blog-list-view {
    display: block;
  }

  .blog-list-view--hidden {
    display: none;
  }

  /* Blog catalog search box */
  .blog-search-container {
    max-width: 600px;
    margin: 0 auto 3rem;
  }

  .search-wrapper {
    display: flex;
    position: relative;
  }

  .search-input {
    width: 100%;
    padding: 0.85rem 3rem 0.85rem 1.25rem;
    border-radius: 30px;
    border: var(--glass-border);
    background-color: var(--color-bg-glass);
    box-shadow: var(--shadow-soft);
    color: var(--color-text);
  }

  .search-input:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: var(--shadow-glow), var(--shadow-soft);
  }

  .search-icon-btn {
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--color-text-muted);
  }
}

@layer utilities {
  .text-gradient {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

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

  .grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
    gap: 2rem;
  }

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

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .blog-post-svg-wrapper {
    margin: 2.5rem 0;
    text-align: center;
    background: var(--color-bg-glass);
    border: var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
  }

  .blog-post-svg-wrapper svg {
    margin-inline: auto;
    max-width: 100%;
    height: auto;
    display: block;
  }

  .blog-post-svg-caption {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 1rem;
    font-style: italic;
  }
}