/* =====================
         Color themes via CSS variables
         Light (default), Dark, Night
         ===================== */
      :root {
        --bg: #f7f7f8;
        --text: #111827;
        --muted: #6b7280;
        --card: #ffffff;
        --border: #e5e7eb;
        --accent: #2563eb;
        --accent-contrast: #ffffff;
        --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
      }
      :root.theme-dark {
        --bg: #0b1220;
        --text: #e5e7eb;
        --muted: #9ca3af;
        --card: #111827;
        --border: #1f2937;
        --accent: #60a5fa;
        --accent-contrast: #0b1220;
        --shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
      }
      :root.theme-night {
        --bg: #06080f;
        --text: #d6d3d1;
        --muted: #a8a29e;
        --card: #0b0f1a;
        --border: #111827;
        --accent: #f59e0b;
        --accent-contrast: #0b0f1a;
        --shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
      }

      /* =====================
         Base + Containers
         ===================== */
      * { box-sizing: border-box; }
      body {
        margin: 0;
        font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
        background: var(--bg);
        color: var(--text);
        line-height: 1.5;
        min-height: 100dvh;
        display: flex;
        flex-direction: column;
      }
      .container { 
        width: 100%; 
        max-width: 100%; 
        margin: 0 auto; 
        padding: 0 16px;
      }
      
      main.container { 
        padding-top: 55px;
        flex: 1 0 auto;
        
      }

      /* Sticky header with controls (search/filter, sorting, theme) */
      .toolbar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        padding: 8px;
        z-index: 50;
        border-radius:10px;
        margin-bottom:0px;
        margin-top:0px;
        background: var(--card);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        
      }
      .controls {
        display: grid;
        grid-template-columns: 1fr auto auto; /* search, mode, theme */
        gap: 12px;
        align-items: center;
      }
      @media (max-width: 900px) {
        .controls { grid-template-columns: 1fr 1fr; }
        .controls .buttons { grid-column: 1 / -1; }
      }

      /* Search + Filter UI */
      .search-group { 
        display: flex;
        gap: 8px;
        background-color: transparent;
       }
      .search-group input {
        flex: 1;
        padding: 10px 12px;
        border: 1px solid var(--border);
        border-radius: 10px; /* radius 10px as requested */
        background: var(--card);
        color: var(--text);
      }
      /* Input wrapper to host the inline clear (X) button */
      .input-wrap { position: relative; display: flex; flex: 1; }
      .input-wrap input { width: 100%; padding-right: 34px; }
      .clear-icon {
        position: absolute;
        right: 8px;
        top: 50%;
        transform: translateY(-50%);
        width: 28px;
        height: 28px;
        display: none; /* toggled via JS when input has value */
        align-items: center;
        justify-content: center;
        border-radius: 999px;
        border: 1px solid var(--border);
        background: transparent;
        color: var(--muted);
        cursor: pointer;
        line-height: 1;
      }
      .clear-icon:hover { background: color-mix(in oklab, var(--accent) 10%, var(--card)); color: var(--text); }
      .clear-icon:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
      .search-group button {
        padding: 10px 14px;
        border-radius: 10px;
        border: 1px solid var(--border);
        background: var(--accent);
        color: var(--accent-contrast);
        cursor: pointer;
      }
      /*top header home button*/
      /*------------------------------------------------------------------------------------------*/
      /* Home tile: separate class for easier edits */
      .home-tile {
        width: 42px;
        height: 42px;
        padding: 0;
        border-radius: 50px;
        background: var(--card);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        box-shadow: var(--shadow);
        font-size: 22px;
        line-height: 1;
        color: var(--text);
        text-decoration: none;
      }
      /*------------------------------------------------------------------------------------------*/
      .search-group button.secondary {
        background: transparent;
        color: var(--text);
      }
      /* Make sure the inline clear icon keeps its transparent look */
      .search-group .clear-icon {
        background: transparent;
        color: var(--muted);
        border-color: var(--border);
      }
      .search-group button:hover { filter: brightness(1.05); }

      .buttons { display: flex; gap: 8px; justify-content: flex-end; }
      select, .theme-toggle {
        padding: 10px 12px;
        border-radius: 10px;
        border: 1px solid var(--border);
        background: var(--card);
        color: var(--text);
        cursor: pointer;
      }

      /* =====================
         Grid: 6 cards per row on large screens
         Responsive breakpoints reduce columns
         ===================== */
      .grid {
        display: grid;
        gap: 12px; /* tighter gap to fit 8 per row */
        grid-template-columns: repeat(8, minmax(0, 1fr));
        padding: 16px 0; /* align with index sections */
      }
      @media (max-width: 1200px) { .grid { grid-template-columns: repeat(6, 1fr); } }
      @media (max-width: 1024px) { .grid { grid-template-columns: repeat(5, 1fr); } }
      @media (max-width: 900px)  { .grid { grid-template-columns: repeat(4, 1fr); } }
      @media (max-width: 760px)  { .grid { grid-template-columns: repeat(3, 1fr); } }
      @media (max-width: 640px)  { .grid { grid-template-columns: repeat(2, 1fr); } }
      @media (max-width: 420px)  { .grid { grid-template-columns: 1fr; } }

      /* =====================
         Card styles
         ===================== */
      .card {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: 5px; /* radius 10px */
        box-shadow: var(--shadow);
        overflow: hidden;
        display: flex;
        flex-direction: column;
        transition: transform 0.15s ease, box-shadow 0.15s ease;
        cursor: pointer; /* entire card is clickable */
        text-decoration: none; /* if anchor */
        color: inherit; /* inherit text color */
      }
      .card:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 24px rgba(0, 0, 0, 0.14);
        background-color: #a4adb7;
      }
      .cover {
        aspect-ratio: 5 / 6; /* ~20% shorter than 2/3 */
        width: 100%;
        object-fit: cover;
        background: #e5e7eb;
      }
      .meta { padding: 4px; display: grid; gap: 4px; }
      .title { font-size: 0.8rem; font-weight: 600; min-height: 2em; }
      .author { font-size: 0.7rem; color: var(--muted); }
      .id-badge {
        display: none;
        font-size: 0.62rem;
        padding: 1px 6px;
        border-radius: 999px;
        border: 1px solid var(--border);
        background: color-mix(in oklab, var(--accent) 10%, var(--card));
        color: var(--muted);
        justify-self: start;
      }
      .tags { display: flex; gap: 6px; flex-wrap: wrap; }
      .tag {
        font-size: 0.6rem; /* smaller tags */
        padding: 1px 4px;
        border-radius: 999px;
        background: color-mix(in oklab, var(--accent) 18%, var(--card));
        color: var(--text);
        border: 1px solid var(--border);
      }

      /* =====================
         Footer + counters
         ===================== */
      .footer {
        padding: 12px 16px 24px;
        color: var(--muted);
        display: flex;
        justify-content: space-between;
        gap: 12px;
        align-items: center;
      }
      .count { 
        font-weight: 600;
     }
      .theme-select { 
        min-width: 50px;
        font-size:28px;
        padding:0px;
        margin:0px;
     }

      /* =====================
         No results + utilities
         ===================== */
      #noResults { display: none; text-align: center; padding: 24px; color: var(--muted); }
      .hidden { display: none !important; }
      .home-btn {
        cursor: pointer;
        width: 100%;
        height: 100%;
        text-decoration: none; 
        font-size: 20px;
        line-height: 1;
      }
    blink{
      animation: blink .6s infinite;
    }
    @keyframes blink {
      0% { opacity: 1; }
      50% { opacity: 0; }
      100% { opacity: 1; }
    }