@import url('layout.css');
@layer reset, base, theme, components, utilities;

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

  html {
    text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
  }

  body {
    min-block-size: 100vh;
    line-height: 1.6;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    max-width: 100vw;
  }

  img, svg, canvas {
    display: block;
    max-inline-size: 100%;
    block-size: auto;
  }

  input, button, textarea, select {
    font: inherit;
  }

  a {
    color: inherit;
    text-decoration: none;
  }
}

@layer theme {
  :root {
    /* Color Tokens (Khadi, Sandstone, Indigo, Copper, Charcoal Ink) */
    --color-paper: #FAF8F5;          /* Warm Khadi cotton paper */
    --color-ink: #111111;            /* Dark carbon ink */
    --color-indigo: #3C4F76;         /* Organic indigo vegetable dye */
    --color-copper: #B85D43;         /* Muted copper / terracotta dye */
    --color-sandstone: #70655B;      /* Darker sandstone gray */
    --color-sandstone-light: #EBE5DD;/* Very soft sandstone border */
    --color-thread: #E4DACF;         /* Raw unbleached cotton thread */
    
    /* Typography Tokens */
    --font-display: "Amatic SC", "Cormorant Garamond", serif;
    --font-body: "Playpen Sans Deva", "Lora", serif;
    --font-code: "JetBrains Mono", "Fira Code", Courier, monospace;
    
    /* Layout Tokens */
    --max-width: 760px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3.5rem;
    --spacing-xl: 6rem;
  }
}

@layer base {
  body {
    background-color: var(--color-paper);
    color: var(--color-ink);
    font-family: var(--font-body);
    font-size: 1.125rem;
    padding-inline: var(--spacing-md);
    padding-block: var(--spacing-xl);
    
    /* Subtle CSS Loom Weave Background - Grid of threads */
    background-image: 
      linear-gradient(90deg, rgba(228, 218, 207, 0.22) 1px, transparent 1px),
      linear-gradient(rgba(228, 218, 207, 0.22) 1px, transparent 1px);
    background-size: 10px 16px;
    background-attachment: fixed;
  }

  /* Language Toggle Display Classes */
  .lang-sa {
    display: none;
    font-family: 'Playpen Sans Deva', var(--font-body);
  }
  body.sanskrit-mode .lang-en {
    display: none;
  }
  body.sanskrit-mode .lang-sa {
    display: inline;
  }
  body.sanskrit-mode {
    font-family: 'Playpen Sans Deva', var(--font-body);
  }

  /* Structural Containers */
  .site-container {
    max-inline-size: var(--max-width);
    margin-inline: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    position: relative;
    z-index: 1;
  }

  /* Typography Hierarchies */
  h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 500;
    line-height: 1.25;
    color: var(--color-ink);
    text-wrap: balance;
  }

  h1 {
    font-size: 2.5rem;
    margin-block-end: var(--spacing-sm);
  }

  h2 {
    font-size: 1.85rem;
    margin-block-start: var(--spacing-lg);
    margin-block-end: var(--spacing-sm);
    border-block-end: 1px solid var(--color-sandstone-light);
    padding-block-end: var(--spacing-xs);
    position: relative;
  }

  h3 {
    font-size: 1.35rem;
    margin-block-start: var(--spacing-md);
    margin-block-end: var(--spacing-xs);
  }

  p {
    margin-block-end: var(--spacing-sm);
    text-wrap: pretty;
  }

  p + p {
    text-indent: 1.5rem;
    margin-block-start: calc(-1 * var(--spacing-xs));
  }

  code, pre {
    font-family: var(--font-code);
    font-size: 0.9em;
    background-color: rgba(142, 130, 120, 0.07);
  }

  code {
    padding-inline: 0.25em;
    padding-block: 0.1em;
    border-radius: 2px;
  }

  pre {
    display: block;
    padding: var(--spacing-sm);
    overflow-x: auto;
    border-left: 3px solid var(--color-copper);
    margin-block: var(--spacing-md);
    white-space: pre-wrap;
    word-break: break-all;
  }

  ul, ol {
    margin-block-end: var(--spacing-sm);
    padding-inline-start: var(--spacing-md);
  }

  li {
    margin-block-end: var(--spacing-xs);
  }

  blockquote {
    font-style: italic;
    border-left: 2px solid var(--color-indigo);
    padding-inline-start: var(--spacing-sm);
    margin-inline: 0;
    margin-block: var(--spacing-md);
    color: var(--color-sandstone);
  }

  /* Semantic Details and Ledger Layouts */
  hr {
    border: 0;
    border-block-end: 1px solid var(--color-sandstone-light);
    margin-block: var(--spacing-lg);
  }

  small {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--color-sandstone);
    letter-spacing: 0.05em;
  }
}

@layer components {
  /* Navigation Bar */
  .site-header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    border-block-end: 2px solid var(--color-ink);
    padding-block-end: var(--spacing-sm);
  }

  .site-title {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: -0.01em;
    font-weight: 500;
  }

  .site-nav {
    display: flex;
    flex-wrap: wrap;
    column-gap: var(--spacing-sm);
    row-gap: var(--spacing-xs);
    font-family: var(--font-code);
    font-size: 0.85rem;
    text-transform: lowercase;
  }

  .nav-link {
    color: var(--color-sandstone);
    position: relative;
    padding-block: var(--spacing-xs);
    transition: color 0.3s ease;
  }

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

  .nav-link::after {
    content: "";
    position: absolute;
    inline-size: 100%;
    block-size: 1px;
    background-color: var(--color-copper);
    inset-block-end: 0;
    inset-inline-start: 0;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .nav-link:hover::after, .nav-link.active::after {
    transform: scaleX(1);
    transform-origin: left;
  }

  /* Link Animations */
  .text-link {
    color: var(--color-indigo);
    border-block-end: 1px solid rgba(60, 79, 118, 0.2);
    transition: border-color 0.3s, color 0.3s;
  }

  .text-link:hover {
    color: var(--color-copper);
    border-block-end-color: var(--color-copper);
  }

  /* Visual Generator Canvas Overlays */
  .paper-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.45;
  }

  /* Archival Page layout headers */
  .archival-header {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    align-items: baseline;
    gap: var(--spacing-sm);
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--color-sandstone);
    margin-block-end: var(--spacing-md);
    border-block-end: 1px dashed var(--color-sandstone-light);
    padding-block-end: var(--spacing-xs);
  }

  .archival-header > div:nth-child(1) { text-align: left; }
  .archival-header > div:nth-child(2) { text-align: center; }
  .archival-header > div:nth-child(3) { text-align: right; }


  /* Timeline Ledger */
  .timeline-ledger {
    position: relative;
    padding-inline-start: var(--spacing-md);
    border-inline-start: 1px solid var(--color-sandstone-light);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-block: var(--spacing-md);
  }

  .timeline-node {
    position: relative;
  }

  .timeline-node::before {
    content: "";
    position: absolute;
    inline-size: 9px;
    block-size: 9px;
    background-color: var(--color-paper);
    border: 1px solid var(--color-copper);
    border-radius: 50%;
    inset-inline-start: calc(-1 * var(--spacing-md) - 5px);
    inset-block-start: 6px;
  }

  .timeline-date {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--color-copper);
  }

  .timeline-content {
    margin-block-start: var(--spacing-xs);
  }

  /* Archive dossier record */
  .dossier-record {
    border: 1px solid var(--color-sandstone-light);
    padding: var(--spacing-md);
    margin-block-end: var(--spacing-md);
    position: relative;
  }

  .dossier-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-sm);
    font-family: var(--font-code);
    font-size: 0.75rem;
    border-block-end: 1px solid var(--color-sandstone-light);
    padding-block-end: var(--spacing-xs);
    margin-block-end: var(--spacing-sm);
    color: var(--color-sandstone);
  }

  /* Grid Card Layouts & Interactive Garden Filter Components */
  .card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    margin-block: var(--spacing-md);
  }
  
  @media (min-width: 600px) {
    .card-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  .project-card {
    border: 1px solid var(--color-sandstone-light);
    background-color: transparent;
    padding: var(--spacing-sm) var(--spacing-md);
    transition: transform 0.2s ease, border-color 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: var(--spacing-xs);
  }

  .project-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(142, 130, 120, 0.12);
    border-color: var(--color-indigo);
  }

  .tag-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-block: var(--spacing-xs);
  }

  .tag {
    font-family: var(--font-code);
    font-size: 0.68rem;
    padding-inline: 0.5em;
    padding-block: 0.15em;
    background-color: rgba(142, 130, 120, 0.08);
    color: var(--color-sandstone);
    text-transform: lowercase;
    border: 1px solid transparent;
  }

  .tag-active {
    background-color: var(--color-indigo) !important;
    color: var(--color-paper) !important;
  }

  .filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-block-end: var(--spacing-md);
  }

  /* Interactive Lab Interface */
  .lab-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  @media (min-width: 600px) {
    .lab-layout {
      grid-template-columns: 2fr 1fr;
    }
  }

  .lab-viewport {
    border: 1px solid var(--color-ink);
    background-color: #FFFFFF;
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
  }

  .lab-controls {
    border: 1px solid var(--color-sandstone-light);
    padding: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
  }

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

  .control-group label {
    font-family: var(--font-code);
    font-size: 0.75rem;
    text-transform: lowercase;
  }

  .btn {
    font-family: var(--font-code);
    font-size: 0.8rem;
    background-color: var(--color-paper);
    color: var(--color-ink);
    border: 1px solid var(--color-ink);
    padding-block: var(--spacing-xs);
    padding-inline: var(--spacing-sm);
    cursor: pointer;
    text-transform: lowercase;
    transition: all 0.3s ease;
  }

  .btn:hover {
    background-color: var(--color-ink);
    color: var(--color-paper);
  }

  .btn-primary {
    background-color: var(--color-indigo);
    color: var(--color-paper);
    border-color: var(--color-indigo);
  }

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

  /* Library Book Shelf */
  .library-shelf {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-block: var(--spacing-md);
  }

  .book-spine-link {
    display: block;
  }

  .book-spine {
    border-inline-start: 12px solid var(--color-indigo);
    border-block: 1px solid var(--color-sandstone-light);
    border-inline-end: 1px solid var(--color-sandstone-light);
    padding: var(--spacing-sm);
    background-color: #FFFFFF;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }

  .book-spine:hover {
    transform: translateX(4px);
    box-shadow: -2px 2px 8px rgba(142, 130, 120, 0.15);
  }

  .book-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 500;
  }

  .book-author {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--color-sandstone);
  }

  /* Living Book Reader */
  .book-container {
    border: 1px solid var(--color-ink);
    background-color: #FFFFFF;
    padding: var(--spacing-lg) var(--spacing-md);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    position: relative;
  }

  .book-navigation {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-code);
    font-size: 0.8rem;
    border-block-start: 1px solid var(--color-sandstone-light);
    padding-block-start: var(--spacing-sm);
    margin-block-start: var(--spacing-lg);
  }

  .marginal-note {
    font-size: 0.85rem;
    color: var(--color-sandstone);
    border-inline-start: 1px solid var(--color-copper);
    padding-inline-start: var(--spacing-sm);
    margin-block: var(--spacing-sm);
    font-style: italic;
  }

  /* Footer */
  .site-footer {
    border-block-start: 1px solid var(--color-ink);
    padding-block-start: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-code);
    font-size: 0.75rem;
    color: var(--color-sandstone);
    margin-block-start: var(--spacing-xl);
  }
}

@layer utilities {
  .text-center { text-align: center; }
  .text-right { text-align: right; }
  .text-indigo { color: var(--color-indigo); }
  .text-copper { color: var(--color-copper); }
  .text-sandstone { color: var(--color-sandstone); }
  .font-mono { font-family: var(--font-code); }
  .font-display { font-family: var(--font-display); }
  
  .mt-sm { margin-block-start: var(--spacing-sm); }
  .mt-md { margin-block-start: var(--spacing-md); }
  .mt-lg { margin-block-start: var(--spacing-lg); }
  
  .mb-sm { margin-block-end: var(--spacing-sm); }
  .mb-md { margin-block-end: var(--spacing-md); }
  .mb-lg { margin-block-end: var(--spacing-lg); }

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

@media (max-width: 768px) {
  /* Global word wrapping for long compound words (especially Sanskrit) */
  * {
    overflow-wrap: anywhere;
  }
  .lang-sa {
    word-break: break-word;
    white-space: normal;
  }
  code {
    word-break: break-word;
    white-space: pre-wrap;
  }
  mjx-container {
    max-width: 100% !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
  }
  p, h1, h2, h3, h4, h5, h6, span, a, div {
    word-break: break-word;
    overflow-wrap: anywhere;
  }
}