/*---------------------------
      Design Tokens
    ----------------------------*/
    :root {
      --bg: #0b0e13;
      --surface: #111622;
      --elev-1: #0f1420;
      --elev-2: #0b101b;
      --text: #e9edf4;
      --text-muted: #a7b0c0;
      --brand: #6ea8ff;
      --brand-2: #b3d4ff;
      --accent: #7ee7ff;
      --ring: 0 0 0 2px color-mix(in srgb, var(--brand) 30%, transparent);
      --radius: 14px;
      --radius-sm: 10px;
      --radius-xs: 8px;
      --shadow-1: 0 10px 30px rgba(0,0,0,.35), 0 2px 10px rgba(0,0,0,.3);
      --shadow-2: 0 24px 60px rgba(0,0,0,.45), 0 8px 20px rgba(0,0,0,.25);
      --verse-highlight: color-mix(in srgb, var(--brand) 10%, transparent);
      --selection: color-mix(in srgb, var(--brand) 25%, transparent);
      --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
      --serif: "Iowan Old Style", "Georgia", "Times New Roman", Times, serif;
      --display: "Canela", "Libre Baskerville", "Cormorant Garamond", "Spectral", "Georgia", serif;
      --ease: cubic-bezier(.2, .7, .2, 1);
      --error: #ff4d4f;
      --success: #52c41a;
      --info: #2f62ff;

      --glow-1: rgba(110,168,255,.35);
      --glow-2: rgba(23,180,229,.25);
      --panel-glass: linear-gradient(180deg, color-mix(in srgb, var(--surface) 88%, transparent), color-mix(in srgb, var(--elev-1) 88%, transparent));
      --border-strong: 1px solid color-mix(in srgb, var(--brand) 32%, transparent);
      --border-soft: 1px solid color-mix(in srgb, var(--brand) 18%, transparent);
    }

    [data-theme="light"] {
      --bg: #f6f7fb;
      --surface: #ffffff;
      --elev-1: #ffffff;
      --elev-2: #f2f4f9;
      --text: #1b2333;
      --text-muted: #5b6477;
      --brand: #2f62ff;
      --brand-2: #5a86ff;
      --accent: #16b1e5;
      --verse-highlight: color-mix(in srgb, var(--brand) 12%, transparent);
      --shadow-1: 0 10px 30px rgba(15, 35, 95, .08), 0 6px 16px rgba(15, 35, 95, .06);
      --shadow-2: 0 24px 60px rgba(15, 35, 95, .12), 0 8px 20px rgba(15, 35, 95, .08);
      --error: #f5222d;
      --success: #389e0d;
      --info: #2f62ff;

      --glow-1: rgba(47,98,255,.25);
      --glow-2: rgba(22,177,229,.18);
      --panel-glass: linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--elev-2) 96%, transparent));
      --border-strong: 1px solid color-mix(in srgb, var(--brand) 30%, transparent);
      --border-soft: 1px solid color-mix(in srgb, var(--brand) 16%, transparent);
    }

    *, *::before, *::after { box-sizing: border-box; }
    html, body { height: 100%; }
    ::selection { background: var(--selection); color: var(--text); }

    body {
      margin: 0;
      font-family: var(--serif);
      color: var(--text);
      background:
        radial-gradient(1200px 700px at 10% -5%, color-mix(in srgb, var(--brand) 8%, transparent), transparent 60%),
        radial-gradient(900px 600px at 110% 10%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 55%),
        linear-gradient(180deg, var(--bg) 0%, color-mix(in srgb, var(--bg) 90%, #000) 100%);
      background-attachment: fixed;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      transition: background-color .4s var(--ease), color .4s var(--ease);
    }

    /* Subtle noise texture */
    .noise {
      pointer-events: none;
      position: fixed;
      inset: 0;
      opacity: .06;
      mix-blend-mode: soft-light;
      background-image:
        radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,.6), transparent 60%),
        radial-gradient(1px 1px at 60% 70%, rgba(255,255,255,.5), transparent 60%),
        radial-gradient(1px 1px at 80% 20%, rgba(255,255,255,.4), transparent 60%),
        radial-gradient(1px 1px at 30% 80%, rgba(255,255,255,.45), transparent 60%);
      z-index: 1;
    }

    a { color: var(--brand); text-decoration: none; }
    a:hover { text-decoration: underline; }

    .wrap { max-width: 960px; margin: 0 auto; padding: clamp(18px, 3.5vw, 28px); position: relative; z-index: 2; }

    /*---------------------------
      Top Bar Selector
    ----------------------------*/
    .topbar {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      align-items: center;
      gap: 10px;
      padding: 10px 12px;
      background: color-mix(in srgb, var(--surface) 90%, transparent);
      border: 1px solid color-mix(in srgb, var(--brand) 18%, transparent);
      border-radius: var(--radius);
      box-shadow: var(--shadow-1);
      position: sticky;
      top: 12px;
      z-index: 50;
      backdrop-filter: blur(6px) saturate(120%);
    }

    .topbar-left { justify-self: start; display: flex; gap: 8px; align-items: center; }
    .topbar-right { justify-self: end; display: flex; gap: 8px; }

    .brand-pill {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      background: linear-gradient(180deg, color-mix(in srgb, var(--elev-2) 85%, transparent), color-mix(in srgb, var(--surface) 85%, transparent));
      border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
      cursor: pointer;
      user-select: none;
      box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--brand) 8%, transparent);
      transition: box-shadow .2s var(--ease), transform .08s var(--ease), filter .2s var(--ease);
    }
    .brand-pill:hover { filter: brightness(1.04); }
    .brand-pill:active { transform: translateY(1px); }

    .brand-title {
      font-family: var(--display);
      font-weight: 600;
      letter-spacing: .2px;
      margin: 0;
      font-size: clamp(18px, 3.4vw, 22px);
      background: linear-gradient(180deg, var(--text) 0%, color-mix(in srgb, var(--text) 70%, transparent) 100%);
      -webkit-background-clip: text; background-clip: text; color: transparent;
      white-space: nowrap;
    }

    .chevron { color: var(--text-muted); transition: transform .2s var(--ease), color .2s var(--ease); font-size: 16px; }
    .brand-pill[aria-expanded="true"] .chevron { transform: rotate(180deg); color: var(--brand); }

    .theme-btn, .small-btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      padding: 9px 12px; border-radius: var(--radius-sm);
      background: linear-gradient(180deg, color-mix(in srgb, var(--elev-2) 85%, transparent), color-mix(in srgb, var(--surface) 85%, transparent));
      border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
      cursor: pointer; transition: transform .08s var(--ease), filter .2s var(--ease), box-shadow .2s var(--ease);
      white-space: nowrap; color: var(--text);
    }
    .theme-btn:hover, .small-btn:hover { filter: brightness(1.06); box-shadow: var(--shadow-2); }
    .theme-btn:active, .small-btn:active { transform: translateY(1px); }

    .topbar-center { justify-self: center; }
    .location-chip {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 8px 12px; border-radius: 999px;
      background: color-mix(in srgb, var(--brand) 10%, transparent);
      border: 1px solid color-mix(in srgb, var(--brand) 25%, transparent);
      color: var(--text-muted); font-size: 14px; white-space: nowrap;
    }

    /* Dropdown Panel (Books) */
    .book-panel {
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      top: calc(100% + 8px);
      width: min(900px, 96vw);
      background: var(--surface);
      border: 1px solid color-mix(in srgb, var(--brand) 28%, transparent);
      border-radius: var(--radius);
      box-shadow: var(--shadow-2);
      padding: 14px;
      display: none;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }
    .book-panel.open { display: grid; animation: panel-in .22s var(--ease); }
    @keyframes panel-in { from { opacity:0; transform: translate(-50%, -6px);} to { opacity:1; transform: translate(-50%, 0);} }

    .canon-col {
      background: linear-gradient(180deg, color-mix(in srgb, var(--elev-1) 92%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
      border: var(--border-soft);
      border-radius: var(--radius-sm);
      box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--brand) 8%, transparent);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      min-height: 280px;
      max-height: min(60vh, 420px);
    }

    .canon-head {
      padding: 10px 12px;
      font-weight: 700;
      color: var(--brand);
      border-bottom: var(--border-soft);
      background: color-mix(in srgb, var(--brand) 6%, transparent);
    }

    .book-list {
      overflow: auto;
      padding: 6px;
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
      gap: 6px;
      scrollbar-width: thin;
      scrollbar-color: var(--brand) var(--elev-2);
    }
    .book-list::-webkit-scrollbar { width: 6px; }
    .book-list::-webkit-scrollbar-thumb { background-color: color-mix(in srgb, var(--brand) 30%, transparent); border-radius: 20px; }

    .book-tile {
      padding: 10px 12px;
      border-radius: 10px;
      background: color-mix(in srgb, var(--elev-2) 86%, transparent);
      border: var(--border-soft);
      cursor: pointer;
      display: flex; align-items: center; justify-content: space-between; gap: 8px;
      transition: background .15s var(--ease), transform .08s var(--ease), box-shadow .2s var(--ease);
    }
    .book-tile:hover { background: color-mix(in srgb, var(--brand) 12%, transparent); box-shadow: var(--shadow-1); }
    .book-tile:active { transform: translateY(1px); }
    .book-tile.active { outline: none; box-shadow: 0 0 0 2px var(--brand); background: color-mix(in srgb, var(--brand) 18%, transparent); }
    .book-name { font-weight: 600; }
    .chapter-pill { font-size: 12px; color: var(--text-muted); background: color-mix(in srgb, var(--brand) 10%, transparent); padding: 2px 6px; border-radius: 10px; }

    @media (max-width: 700px) {
      .book-panel { grid-template-columns: 1fr; max-height: none; }
      .topbar { top: 0; border-radius: 0; }
    }

    /* Chapter Rail */
    .chapter-rail {
      margin-top: 14px;
      display: none;
      gap: 8px;
      align-items: center;
      flex-wrap: wrap;
      background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 92%, transparent), color-mix(in srgb, var(--elev-1) 92%, transparent));
      border: var(--border-soft);
      border-radius: var(--radius);
      padding: 10px;
      box-shadow: var(--shadow-1);
    }
    .chapter-rail.visible { display: flex; }

    .chapter-btn {
      padding: 6px 10px;
      border-radius: 10px;
      border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
      background: color-mix(in srgb, var(--elev-2) 88%, transparent);
      color: var(--text);
      cursor: pointer;
      font-size: 14px;
      transition: background .15s var(--ease), transform .08s var(--ease), box-shadow .2s var(--ease);
    }
    .chapter-btn:hover { background: color-mix(in srgb, var(--brand) 12%, transparent); box-shadow: var(--shadow-1); }
    .chapter-btn:active { transform: translateY(1px); }
    .chapter-btn.active { background: color-mix(in srgb, var(--brand) 26%, transparent); color: var(--text); font-weight: 700; }

    /* Reader */
    header.app-header { display: grid; gap: 18px; margin-bottom: 22px; }
    .brand { display: grid; justify-items: center; gap: 10px; position: relative; }
    .emblem {
      width: 56px; height: 56px;
      border-radius: 16px;
      background:
        conic-gradient(from 220deg at 60% 40%, color-mix(in srgb, var(--brand) 40%, transparent), transparent 40%),
        conic-gradient(from 30deg at 40% 60%, color-mix(in srgb, var(--accent) 40%, transparent), transparent 40%),
        radial-gradient(60% 60% at 50% 50%, color-mix(in srgb, var(--brand) 30%, #1b2a44), transparent 70%);
      box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--brand) 35%, transparent), var(--shadow-1), 0 0 30px var(--glow-1);
    }
    h1.title {
      font-family: var(--display); font-weight: 600; letter-spacing: .2px; margin: 0;
      font-size: clamp(28px, 4.8vw, 40px); line-height: 1.15; text-align: center; text-wrap: balance;
      background: linear-gradient(180deg, var(--text) 0%, color-mix(in srgb, var(--text) 70%, transparent) 100%);
      -webkit-background-clip: text; background-clip: text; color: transparent;
    }
    p.subtitle { margin: 0; text-align: center; color: var(--text-muted); font-size: clamp(14px, 2.6vw, 16px); }

    main.reader {
      margin-top: 18px;
      background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 92%, transparent), color-mix(in srgb, var(--elev-1) 92%, transparent));
      border: var(--border-soft);
      border-radius: var(--radius);
      box-shadow: var(--shadow-1);
      overflow: clip;
    }
    .reader-header {
      display: grid; grid-template-columns: auto 1fr auto;
      align-items: center;
      padding: clamp(12px, 2.5vw, 16px) clamp(14px, 3vw, 20px);
      border-bottom: 1px solid color-mix(in srgb, var(--brand) 12%, transparent);
      background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 85%, transparent), color-mix(in srgb, var(--elev-2) 85%, transparent));
    }
    .reader-title { font-family: var(--display); font-size: clamp(18px, 2.8vw, 22px); letter-spacing: .2px; text-align: center; margin: 0; }
    .nav-controls { display: flex; gap: 8px; justify-content: flex-start; align-items: center; }

    .reader-header > .nav-controls:last-of-type { justify-content: flex-end; }
    .reader-body {
      padding: clamp(16px, 3.5vw, 26px);
      column-width: 36ch;
      column-gap: clamp(28px, 5vw, 48px);
      orphans: 3; widows: 3;
    }
    @media (max-width: 700px) { .reader-body { column-width: auto; } }

    .verse { break-inside: avoid; padding: 6px 10px; margin: 2px -8px; border-radius: 10px; transition: background-color .2s var(--ease); }
    .verse:hover { background: var(--verse-highlight); }
    .verse.selected { background: var(--verse-highlight); }
    .verse-num { font-family: var(--mono); font-size: 12px; color: var(--brand-2); margin-right: 8px; vertical-align: super; }
    .verse-text { font-size: clamp(17px, 2.6vw, 20px); line-height: 1.75; letter-spacing: .2px; }

    footer.app-footer { margin-top: 18px; display: grid; gap: 12px; justify-items: center; }
    .chapter-nav {
      display: grid; grid-template-columns: auto 1fr auto;
      gap: 10px; align-items: center; width: 100%;
      background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 92%, transparent), color-mix(in srgb, var(--elev-1) 92%, transparent));
      border: var(--border-soft);
      border-radius: var(--radius);
      padding: 10px; box-shadow: var(--shadow-1);
    }
    .location { justify-self: center; color: var(--text-muted); font-weight: 600; letter-spacing: .3px; }

    /* Utilities */
    .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; white-space: nowrap; }
    :focus-visible { outline: none; box-shadow: var(--ring); border-radius: 10px; }
    .theme-fade { transition: background .5s var(--ease), color .5s var(--ease), border-color .5s var(--ease), box-shadow .5s var(--ease); }

    /* Toasts */
    .toast-container { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 1000; display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
    .toast { padding: 12px 16px; border-radius: var(--radius-sm); box-shadow: var(--shadow-2); color: white; font-size: 14px; max-width: min(400px, 90vw); opacity: 0; transform: translateY(20px); animation: toast-appear 0.3s forwards, toast-disappear 0.3s forwards 3.7s; display: flex; align-items: center; gap: 10px; }
    .toast.success { background: var(--success); }
    .toast.error { background: var(--error); }
    .toast.info { background: var(--info); }
    @keyframes toast-appear { to { opacity: 1; transform: translateY(0); } }
    @keyframes toast-disappear { to { opacity: 0; transform: translateY(-20px); } }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
      
        padding: 10px 16px;
        border-radius: 6px;
      
        background: #1e90ff;       /* primary blue */
        border: none;
        color: #fff;
        font-weight: 500;
      
        cursor: pointer;
        white-space: nowrap;
      
        transition: background 0.2s ease, transform 0.1s ease;
      }
      
      .btn:hover {
        background: #1c86ee;       /* slightly darker blue */
        transform: translateY(-1px);
      }
      
      .btn:active {
        background: #187bcd;       /* deeper blue */
        transform: translateY(0);
      }
      
    .btn.secondary { background: linear-gradient(180deg, color-mix(in srgb, var(--elev-2) 85%, transparent), color-mix(in srgb, var(--surface) 85%, transparent)); border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent); color: var(--text); }
    .btn.ghost { background: transparent; border: 1px dashed color-mix(in srgb, var(--brand) 30%, transparent); color: var(--text-muted); }

    /* Compact icon button */
    .icon-btn {
      display: inline-flex; align-items: center; justify-content: center;
      width: 36px; height: 36px; border-radius: 10px;
      background: linear-gradient(180deg, color-mix(in srgb, var(--elev-2) 85%, transparent), color-mix(in srgb, var(--surface) 85%, transparent));
      border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
      color: var(--text); cursor: pointer;
      transition: transform .08s var(--ease), filter .2s var(--ease), box-shadow .2s var(--ease);
    }
    .icon-btn:hover { filter: brightness(1.06); box-shadow: var(--shadow-2); }
    .icon-btn:active { transform: translateY(1px); }

    /* ============= Extraordinary AI Assistant ============= */
    .ai-assistant-btn{
      position:fixed;bottom:24px;right:24px;width:64px;height:64px;border-radius:50%;
      background: radial-gradient(120% 120% at 30% 30%, var(--brand) 0%, color-mix(in srgb, var(--accent) 40%, var(--brand)) 60%, var(--brand) 100%);
      color:#fff;border:1px solid color-mix(in srgb, #fff 22%, transparent);
      display:flex;align-items:center;justify-content:center;font-size:26px;
      box-shadow:0 10px 30px var(--glow-1), inset 0 0 20px rgba(255,255,255,.15), var(--shadow-2);
      cursor:pointer;transition:transform .2s var(--ease),filter .2s var(--ease), box-shadow .2s var(--ease);
      z-index:102;
    }
    .ai-assistant-btn:hover{transform:translateY(-2px) scale(1.03); filter:brightness(1.05); box-shadow:0 20px 40px var(--glow-1), inset 0 0 24px rgba(255,255,255,.18), var(--shadow-2);}

    .ai-assistant-panel{
      position:fixed;bottom:24px;right:24px;width:min(760px,96vw);height:min(78vh,840px);
      background: var(--panel-glass); border: var(--border-strong); border-radius:24px;
      box-shadow: 0 0 0 1px color-mix(in srgb, var(--brand) 25%, transparent), 0 30px 120px var(--glow-1), var(--shadow-2);
      display:flex;flex-direction:column;z-index:101;opacity:0;transform:translateY(20px) scale(.96);
      pointer-events:none;transition:opacity .35s var(--ease),transform .35s var(--ease);
      overflow:hidden; backdrop-filter: blur(14px) saturate(140%);
    }
    .ai-assistant-panel.open{opacity:1;transform:translateY(0) scale(1);pointer-events:auto;}

    .ai-assistant-panel::before, .ai-assistant-panel::after{
      content:""; position:absolute; inset:-20%;
      background:
        radial-gradient(40% 30% at 20% 20%, color-mix(in srgb, var(--brand) 18%, transparent), transparent 60%),
        radial-gradient(35% 25% at 80% 70%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 60%);
      filter: blur(28px) saturate(120%); opacity:.55; pointer-events:none; z-index:0;
      animation: float-blobs 16s var(--ease) infinite alternate;
    }
    .ai-assistant-panel::after{
      inset:-25%;
      background:
        radial-gradient(30% 30% at 70% 30%, color-mix(in srgb, var(--brand) 12%, transparent), transparent 60%),
        radial-gradient(30% 30% at 30% 80%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 60%);
      animation-duration: 22s;
      opacity:.35;
    }
    @keyframes float-blobs{
      0% { transform: translate(0,0) scale(1); }
      100% { transform: translate(-2%, -1%) scale(1.03); }
    }

    .ai-panel-header{
      position:relative; display:flex; align-items:center; justify-content:space-between; gap:10px;
      padding:16px 18px; border-bottom: var(--border-soft);
      background:
        linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
      z-index:2;
    }
    .ai-panel-title{
      font-weight:700; display:flex; align-items:center; gap:10px; color:var(--brand);
      text-shadow: 0 2px 18px var(--glow-1);
    }
    .ai-panel-actions{display:flex; gap:8px; align-items:center;}
    .ai-header-chip{
      display:inline-flex; align-items:center; gap:6px; padding:6px 10px; border-radius:999px;
      background: color-mix(in srgb, var(--brand) 10%, transparent); border: var(--border-soft);
      font-size:12px; color: var(--text-muted);
    }
    .ai-panel-close{background:transparent;border:none;color:var(--text-muted);cursor:pointer;padding:6px;font-size:16px;border-radius:10px;transition:color .2s var(--ease),background .2s var(--ease),transform .1s var(--ease);}
    .ai-panel-close:hover{color:var(--text);background:color-mix(in srgb, var(--brand) 10%, transparent); transform: translateY(-1px);}

    .ai-suggestions{
      display:flex; gap:8px; flex-wrap:wrap; padding:10px 16px; border-bottom: var(--border-soft); background: color-mix(in srgb, var(--surface) 92%, transparent);
    }
    .suggest-btn{
      padding:6px 10px; border-radius:12px; border: var(--border-soft); cursor:pointer;
      background: linear-gradient(180deg, color-mix(in srgb, var(--elev-2) 90%, transparent), color-mix(in srgb, var(--surface) 90%, transparent));
      color: var(--text); font-size:13px; transition: transform .08s var(--ease), filter .2s var(--ease), box-shadow .2s var(--ease);
    }
    .suggest-btn:hover{filter:brightness(1.06); box-shadow: var(--shadow-1);}
    .suggest-btn:active{transform: translateY(1px);}

    .ai-panel-body{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:14px;scrollbar-width:thin;scrollbar-color:var(--brand) var(--elev-2); z-index:1;}
    .ai-panel-body::-webkit-scrollbar { width: 8px; }
    .ai-panel-body::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--brand) 35%, transparent); border-radius: 10px; }

    .ai-message{
      position: relative;
      padding:14px 16px; border-radius:18px; max-width:85%; width:fit-content; line-height:1.6;
      animation:message-appear .3s var(--ease) forwards; opacity:0; transform:translateY(10px);
      box-shadow: 0 10px 28px rgba(0,0,0,.24), inset 0 0 0 1px color-mix(in srgb, var(--brand) 12%, transparent);
      backdrop-filter: blur(6px);
    }
    @keyframes message-appear{to{opacity:1;transform:translateY(0);}}
    .ai-message.assistant{
      background: linear-gradient(180deg, color-mix(in srgb, var(--brand) 16%, transparent), color-mix(in srgb, var(--brand) 8%, transparent));
      border: 1px solid color-mix(in srgb, var(--brand) 30%, transparent); align-self:flex-start; border-bottom-left-radius:6px;
    }
    .ai-message.user{
      background: linear-gradient(180deg, color-mix(in srgb, var(--text) 11%, transparent), color-mix(in srgb, var(--text) 7%, transparent));
      border: 1px solid color-mix(in srgb, var(--text) 25%, transparent); align-self:flex-end; border-bottom-right-radius:6px;
    }
    .ai-message .bubble-meta{
      position:absolute; top:-10px; left:12px; font-size:11px; color:var(--text-muted);
    }
    .ai-message.user .bubble-meta{left:auto; right:12px;}
    .ai-message-content{margin:0;font-size:15px;white-space:pre-wrap;}
    .bubble-actions{
      position:absolute; right:10px; bottom:-12px; display:flex; gap:6px;
    }
    .bubble-actions .copy-btn{
      background: color-mix(in srgb, var(--surface) 92%, transparent);
      border: var(--border-soft); color: var(--text-muted);
      font-size:12px; padding:4px 8px; border-radius:999px; cursor:pointer;
      transition: filter .2s var(--ease), transform .08s var(--ease);
    }
    .bubble-actions .copy-btn:hover{ filter: brightness(1.06); transform: translateY(-1px); }

    .typing{
      align-self:flex-start; background: color-mix(in srgb, var(--brand) 10%, transparent);
      border: var(--border-soft);
    }
    .typing .dots{display:inline-flex; gap:4px; align-items:center;}
    .typing .dot{width:6px; height:6px; border-radius:50%; background: var(--brand); opacity:.8; animation: bounce 1s infinite;}
    .typing .dot:nth-child(2){animation-delay:.15s;}
    .typing .dot:nth-child(3){animation-delay:.3s;}
    @keyframes bounce{
      0%, 80%, 100% { transform: translateY(0); opacity:.5; }
      40% { transform: translateY(-4px); opacity:1; }
    }

    .ai-panel-input-container{
      padding:12px; border-top: var(--border-soft);
      background: linear-gradient(180deg, color-mix(in srgb, var(--elev-2) 95%, transparent), color-mix(in srgb, var(--surface) 95%, transparent));
    }
    .ai-panel-input-wrapper{
      position: relative;
      display:flex; align-items:flex-end; gap:10px;
      background: color-mix(in srgb, var(--surface) 96%, transparent);
      border: var(--border-strong);
      border-radius:18px; padding:10px 14px; transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
      box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--brand) 10%, transparent);
    }
    .ai-panel-input-wrapper:focus-within{border-color:var(--brand); box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 10%, transparent);}
    .ai-panel-textarea{flex:1;border:none;background:transparent;resize:none;padding:6px 0;max-height:160px;color:var(--text);font-family:inherit;font-size:15px;outline:none;}
    .ai-input-tools{display:flex; gap:6px; align-items:center;}
    .ai-panel-send{
      background: radial-gradient(120% 120% at 20% 20%, var(--brand), color-mix(in srgb, var(--accent) 30%, var(--brand)));
      color:#fff;width:36px;height:36px;border-radius:50%;border:1px solid color-mix(in srgb, #fff 20%, transparent);
      display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .2s var(--ease),transform .1s var(--ease), filter .2s var(--ease); box-shadow: 0 12px 24px var(--glow-1);
    }
    .ai-panel-send:hover{filter:brightness(1.05); transform: translateY(-1px);}
    .ai-panel-send:disabled{background:color-mix(in srgb, var(--brand) 50%, var(--elev-2)); cursor:not-allowed; box-shadow:none;}

    /* ============= Full-screen Settings Modal ============= */
    .settings-modal-backdrop{
      position: fixed; inset: 0; z-index: 200;
      display: grid; place-items: center;
      background: color-mix(in srgb, #000 60%, transparent);
      backdrop-filter: blur(8px) saturate(120%);
      opacity: 0; pointer-events: none; transition: opacity .35s var(--ease);
    }
    .settings-modal-backdrop.visible{ opacity:1; pointer-events: auto; }
    .settings-modal{
      width: min(1100px, 94vw); height: min(86vh, 900px); border-radius: 22px; overflow: hidden;
      background: var(--panel-glass); border: var(--border-strong);
      box-shadow: 0 40px 160px var(--glow-1), var(--shadow-2);
      transform: translateY(16px) scale(.96); opacity: .98;
      transition: transform .35s var(--ease), opacity .35s var(--ease);
      display: grid; grid-template-columns: 280px 1fr; position: relative;
      backdrop-filter: blur(18px) saturate(160%);
    }
    .settings-modal-backdrop.visible .settings-modal { transform: translateY(0) scale(1); opacity: 1; }

    .settings-rail{
      position: relative; z-index: 2;
      background:
        linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
      border-right: var(--border-soft);
      padding: 18px 14px;
      display: grid; grid-auto-rows: min-content; gap: 12px;
    }
    .settings-rail .rail-title{margin:0 6px 6px 6px; font-weight:700; color: var(--brand); font-size: 16px;}
    .rail-btn{
      width: 100%; text-align: left; padding: 10px 12px; border-radius: 12px; cursor: pointer;
      background: linear-gradient(180deg, color-mix(in srgb, var(--elev-2) 92%, transparent), color-mix(in srgb, var(--surface) 92%, transparent));
      border: var(--border-soft); color: var(--text);
      transition: filter .2s var(--ease), transform .08s var(--ease), box-shadow .2s var(--ease);
    }
    .rail-btn:hover{ filter: brightness(1.06); box-shadow: var(--shadow-1); }
    .rail-btn.active{ outline: none; box-shadow: 0 0 0 2px var(--brand); background: color-mix(in srgb, var(--brand) 14%, transparent); }

    .settings-content{
      position: relative; z-index: 1; display: grid; grid-template-rows: auto 1fr auto; min-height: 0;
    }
    .settings-head{
      display:flex; align-items:center; justify-content:space-between; gap:10px;
      padding: 16px 18px; border-bottom: var(--border-soft);
      background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
    }
    .settings-title{ margin:0; font-weight:700; color:var(--brand); font-size:18px; }
    .settings-close{ background:transparent; border:none; color:var(--text-muted); font-size:22px; cursor:pointer; line-height:1; border-radius:10px; padding:6px; }
    .settings-close:hover{ color: var(--text); background: color-mix(in srgb, var(--brand) 10%, transparent); }

    .settings-scroll{
      overflow:auto; padding: 18px; display:grid; grid-template-columns: 1fr 1fr; gap: 16px;
    }

    /* Alternative mobile settings navigation */
@media (max-width: 900px) {
  .settings-scroll::before {
    content: '';
    position: sticky;
    top: 0;
    display: flex;
    gap: 8px;
    padding: 12px 0;
    background: linear-gradient(to bottom, var(--surface), transparent);
    z-index: 2;
    margin-bottom: 12px;
  }
  
  .settings-scroll::after {
    content: '';
    display: block;
    height: 40px;
  }
  
  /* Optional: Add a mobile tab bar */
  .mobile-settings-tabs {
    display: flex;
    overflow-x: auto;
    padding: 8px 12px;
    gap: 8px;
    position: sticky;
    top: 0;
    background: var(--surface);
    z-index: 3;
  }
  
  .mobile-tab {
    padding: 8px 12px;
    white-space: nowrap;
    border-radius: 8px;
    background: var(--elev-2);
  }
  
  .mobile-tab.active {
    background: var(--brand);
    color: white;
  }
}
/* Settings modal mobile adjustments */
@media (max-width: 900px) {
  .settings-modal {
    grid-template-columns: 1fr;
    height: 90vh;
    width: 98vw;
    border-radius: 16px;
  }
  
  .settings-rail {
    display: none; /* Hide rail on mobile */
  }
  
  .settings-scroll {
    grid-template-columns: 1fr;
    padding: 12px;
  }
  
  .settings-section {
    padding: 12px;
  }
  
  /* Make form elements larger for touch */
  .input, .select, .range {
    padding: 12px;
    font-size: 16px;
  }
  
  .btn {
    padding: 12px 16px;
  }
  
  /* Stack footer buttons on small screens */
  .settings-footer {
    flex-direction: column-reverse;
    gap: 8px;
  }
  
  .settings-footer .btn {
    width: 100%;
  }
}
    .settings-section{
      background: linear-gradient(180deg, color-mix(in srgb, var(--elev-1) 94%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
      border: var(--border-soft);
      border-radius: 16px;
      padding: 14px;
      box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--brand) 10%, transparent);
    }
    .settings-title-sub{ margin: 0 0 8px 0; font-weight: 700; color: var(--brand); font-size: 14px; }
    .field { display: grid; gap: 6px; margin-bottom: 10px; }
    .label { font-size: 13px; color: var(--text-muted); }
    .input, .select, .range {
      width: 100%;
      padding: 10px 12px;
      background: var(--elev-2);
      border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
      border-radius: var(--radius-sm);
      color: var(--text);
      font-size: 14px;
    }
    .range { padding: 6px; }
    .switch { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; }
    .switch input { appearance: none; width: 40px; height: 22px; background: color-mix(in srgb, var(--text) 10%, transparent); border-radius: 999px; position: relative; outline: none; transition: background .2s var(--ease); }
    .switch input:checked { background: color-mix(in srgb, var(--brand) 60%, transparent); }
    .switch input::after { content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%; background: white; transition: transform .2s var(--ease); }
    .switch input:checked::after { transform: translateX(18px); }

    .settings-footer{
      display:flex; justify-content:flex-end; gap:12px; padding: 12px 18px; border-top: var(--border-soft);
      background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
    }

    /* Mini TTS Controller */
    .tts-mini {
      position: fixed; bottom: 24px; left: 24px; display: flex; align-items: center; gap: 8px;
      background: color-mix(in srgb, var(--surface) 96%, transparent); border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
      border-radius: 999px; padding: 6px 8px; box-shadow: var(--shadow-2); z-index: 99; opacity: 0.95;
    }
    .tts-mini .pill {
      padding: 6px 10px; border-radius: 999px; font-size: 13px; color: var(--text-muted);
      background: color-mix(in srgb, var(--brand) 8%, transparent); border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
    }
    .tts-mini .icon-btn { width: 32px; height: 32px; }
    @media (max-width: 640px) { .tts-mini { left: 12px; bottom: 12px; } }

    /* Add to existing media query or create new one */
@media (max-width: 640px) {
  .topbar {
    grid-template-columns: auto 1fr auto;
    padding: 8px 10px;
    gap: 6px;
  }
  
  .brand-pill {
    padding: 8px 10px;
    gap: 6px;
  }
  
  .brand-title {
    font-size: 16px;
  }
  
  .theme-btn, .small-btn {
    padding: 7px 10px;
    font-size: 14px;
  }
  
  .location-chip {
    display: none; /* Hide on small screens */
  }
  
  /* Stack buttons vertically when very small */
  @media (max-width: 400px) {
    .topbar-right {
      flex-direction: column;
      gap: 4px;
    }
  }
}

/* Add these to your existing CSS */
@media (pointer: coarse) {
  /* Larger touch targets */
  .book-tile, .chapter-btn, .btn, .icon-btn, .rail-btn {
    min-height: 44px;
  }
  
  /* Prevent zoom on input */
  input, select, textarea {
    font-size: 16px;
  }
  
  /* Remove hover effects on touch devices */
  .book-tile:hover, .chapter-btn:hover, .btn:hover {
    transform: none !important;
    filter: none !important;
  }
  
  /* Active state instead */
  .book-tile:active, .chapter-btn:active, .btn:active {
    transform: translateY(1px) !important;
    filter: brightness(0.95) !important;
  }
}

.hidden {
    display: none;
}


    /* Modal (Legacy API Keys notice) */
    .modal-backdrop{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.6);backdrop-filter:blur(4px);z-index:1000;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .3s var(--ease);}
    .modal-backdrop.visible{opacity:1;pointer-events:all;}
    .modal{background:var(--surface);border-radius:var(--radius);border:1px solid color-mix(in srgb, var(--brand) 30%, transparent);width:min(520px,92vw);box-shadow:var(--shadow-2);transform:translateY(-20px) scale(.95);opacity:0;transition:transform .3s var(--ease),opacity .3s var(--ease);}
    .modal-backdrop.visible .modal{transform:translateY(0) scale(1);opacity:1;}
    .modal-header{padding:16px 20px;border-bottom:1px solid color-mix(in srgb, var(--brand) 20%, transparent);display:flex;align-items:center;justify-content:space-between;}
    .modal-title{font-weight:600;font-size:18px;margin:0;color:var(--brand);}
    .modal-close{background:transparent;border:none;color:var(--text-muted);font-size:22px;cursor:pointer;line-height:1;}
    .modal-body{padding:20px;display:grid;gap:14px;}
    .modal-footer{padding:12px 20px 20px;display:flex;justify-content:flex-end;gap:12px;}
    .api-key-field{display:flex;flex-direction:column;gap:8px;margin-bottom:6px;}
    .api-key-label{font-weight:600;color:var(--text);font-size:15px;}
    .api-key-input{width:100%;padding:12px 14px;background:var(--elev-2);border:1px solid color-mix(in srgb, var(--brand) 25%, transparent);border-radius:var(--radius-sm);color:var(--text);font-family:var(--mono);font-size:14px;transition:border-color .2s var(--ease);}
    .api-key-input:focus{outline:none;border-color:var(--brand);}
    .api-key-helper{font-size:13px;color:var(--text-muted);margin-top:4px;}

    /* ============ New Settings Modal ============ */
.x-settings-backdrop{
  position: fixed; inset: 0; z-index: 200;
  display: grid; place-items: center;
  background: color-mix(in srgb, #000 60%, transparent);
  backdrop-filter: blur(8px) saturate(120%);
  opacity: 0; pointer-events: none; transition: opacity .35s var(--ease);
}
.x-settings-backdrop.visible{ opacity:1; pointer-events: auto; }

.x-settings-modal{
  width: min(1100px, 96vw); height: min(90vh, 940px);
  display: grid; grid-template-columns: 300px 1fr; gap: 0;
  background: var(--panel-glass); border: var(--border-strong);
  border-radius: 22px; overflow: hidden;
  box-shadow: 0 40px 160px var(--glow-1), var(--shadow-2);
  transform: translateY(16px) scale(.98); opacity:.98;
  transition: transform .35s var(--ease), opacity .35s var(--ease);
  position: relative;
  backdrop-filter: blur(18px) saturate(160%);
}
.x-settings-backdrop.visible .x-settings-modal{ transform: translateY(0) scale(1); opacity: 1; }

/* Mobile sticky tabs */
.x-settings-tabs{
  display: none;
}

/* Sidebar (desktop) */
.x-settings-rail{
  background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
  border-right: var(--border-soft);
  display: grid; grid-template-rows: auto 1fr auto;
  padding: 16px;
  min-height: 0;
}
.x-rail-head{display:flex; align-items:center; gap:12px; padding:6px 8px; border-radius:12px; background: color-mix(in srgb, var(--brand) 8%, transparent); border: var(--border-soft);}
.x-rail-emblem{width:36px;height:36px;display:grid;place-items:center;border-radius:10px;background: color-mix(in srgb, var(--brand) 12%, transparent); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--brand) 24%, transparent);}
.x-rail-meta .x-rail-title{margin:0; font-weight:800; color: var(--brand); font-size: 16px; letter-spacing:.2px;}
.x-rail-meta .x-rail-sub{margin:0; font-size:12px; color: var(--text-muted);}

.x-rail-group{display:grid; gap:8px; margin-top:12px;}
.x-rail-btn{
  width:100%; text-align:left; padding:10px 12px; border-radius:12px; cursor:pointer;
  background: linear-gradient(180deg, color-mix(in srgb, var(--elev-2) 92%, transparent), color-mix(in srgb, var(--surface) 92%, transparent));
  border: var(--border-soft); color: var(--text);
  transition: filter .2s var(--ease), transform .08s var(--ease), box-shadow .2s var(--ease);
}
.x-rail-btn:hover{ filter: brightness(1.06); box-shadow: var(--shadow-1); }
.x-rail-btn.active{ outline: none; box-shadow: 0 0 0 2px var(--brand); background: color-mix(in srgb, var(--brand) 14%, transparent); }

.x-rail-foot{display:flex; justify-content:flex-end; margin-top:12px;}
.x-rail-close{
  padding:8px 12px; border-radius:10px; cursor:pointer; border: var(--border-soft); background: transparent; color: var(--text-muted);
}
.x-rail-close:hover{ background: color-mix(in srgb, var(--brand) 10%, transparent); color: var(--text);}

/* Content area */
.x-settings-content{display:grid; grid-template-rows: auto 1fr auto; min-width:0; min-height:0;}

.x-settings-header{
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  padding:16px 18px; border-bottom: var(--border-soft);
  background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
}
.x-title-wrap{display:grid; gap:4px;}
.x-settings-title{margin:0; font-weight:800; color:var(--brand); font-size:18px; letter-spacing:.2px;}
.x-settings-sub{margin:0; color:var(--text-muted); font-size:13px;}
.x-header-close{
  background:transparent; border:none; color:var(--text-muted); font-size:22px; cursor:pointer; line-height:1; border-radius:10px; padding:6px;
}
.x-header-close:hover{ color: var(--text); background: color-mix(in srgb, var(--brand) 10%, transparent); }

.x-panels{
  overflow:auto; padding:18px; display:block; scrollbar-width:thin; scrollbar-color: var(--brand) var(--elev-2);
}
.x-panels::-webkit-scrollbar{ width:8px; }
.x-panels::-webkit-scrollbar-thumb{ background: color-mix(in srgb, var(--brand) 35%, transparent); border-radius: 10px; }

.x-panel{ animation: fade-in .2s var(--ease); }
@keyframes fade-in{ from {opacity:0; transform: translateY(4px);} to {opacity:1; transform:none;} }

.x-section{
  background: linear-gradient(180deg, color-mix(in srgb, var(--elev-1) 94%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
  border: var(--border-soft);
  border-radius: 16px;
  padding: 16px;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--brand) 10%, transparent);
}
.x-section + .x-section{ margin-top: 14px; }

.x-section-title{margin:0 0 10px 0; font-weight:800; color:var(--brand); font-size:15px; letter-spacing:.2px;}

.x-grid{display:grid; grid-template-columns: 1fr 1fr; gap:12px; margin-top:10px;}
@media (max-width: 900px){ .x-grid{grid-template-columns: 1fr;} }

.x-field{display:grid; gap:6px;}
.x-field.inline{ align-items:center; grid-template-columns: 1fr; }

.x-label{ font-size: 13px; color: var(--text-muted); }
.x-input, .x-select, .x-range{
  width: 100%;
  padding: 10px 12px;
  background: var(--elev-2);
  border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
  border-radius: var(--radius-sm);
  color: var(--text); font-size:14px;
}
.x-range{ padding: 6px; }
.x-val{ color: var(--brand); font-weight:700; }

.x-help{ font-size:12px; color: var(--text-muted); }

.x-switch{
  display:inline-flex; align-items:center; gap:12px; cursor:pointer; user-select:none;
}
.x-switch input{ appearance:none; width:44px; height:24px; background: color-mix(in srgb, var(--text) 10%, transparent); border-radius:999px; position: relative; outline:none; transition: background .2s var(--ease); }
.x-switch input:checked{ background: color-mix(in srgb, var(--brand) 60%, transparent); }
.x-switch input::after{ content:""; position:absolute; top:3px; left:3px; width:18px; height:18px; border-radius:50%; background:white; transition: transform .2s var(--ease); box-shadow: 0 1px 3px rgba(0,0,0,.25); }
.x-switch input:checked::after{ transform: translateX(20px); }
.x-switch-track{ display:none; }
.x-switch-label{ color: var(--text); font-size:14px; }

.x-choice-row{display:flex; gap:8px; flex-wrap:wrap;}

.x-btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding: 10px 16px; border-radius: 10px; font-weight:600;
  border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
  background: linear-gradient(180deg, color-mix(in srgb, var(--elev-2) 85%, transparent), color-mix(in srgb, var(--surface) 85%, transparent));
  color: var(--text); cursor: pointer; white-space: nowrap;
  transition: transform .08s var(--ease), filter .2s var(--ease), box-shadow .2s var(--ease);
}
.x-btn:hover{ filter: brightness(1.06); box-shadow: var(--shadow-2); }
.x-btn:active{ transform: translateY(1px); }

.x-btn.primary{
  background: #1e90ff; color: #fff; border-color: transparent;
}
.x-btn.primary:hover{ filter: brightness(1.05); }
.x-btn.secondary{}
.x-btn.ghost{ background: transparent; border-style: dashed; color: var(--text-muted); }

.x-actions{ display:flex; gap:8px; flex-wrap: wrap; margin-top: 12px; }

.x-settings-footer{
  display:flex; justify-content:flex-end; gap:10px;
  padding: 12px 18px; border-top: var(--border-soft);
  background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
}

/* Mobile layout */
@media (max-width: 900px){
  .x-settings-modal{
    grid-template-columns: 1fr;
    height: 92 vh; width: 98vw; border-radius: 16px;
  }
  .x-settings-rail{ display:none; }

  .x-settings-tabs{
    position: sticky; top: 0; z-index: 3;
    display: grid; grid-auto-flow: column; align-items: center;
    gap: 8px; padding: 10px 10px;
    background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--surface) 60%, transparent));
    border-bottom: var(--border-soft);
    -webkit-backdrop-filter: blur(10px) saturate(140%); backdrop-filter: blur(10px) saturate(140%);
  }
  .x-tab{
    padding: 10px 12px; border-radius: 999px; border: var(--border-soft);
    background: color-mix(in srgb, var(--elev-2) 92%, transparent); color: var(--text);
    font-weight: 600; white-space: nowrap;
  }
  .x-tab.active{ background: var(--brand); color: white; border-color: color-mix(in srgb, #fff 25%, transparent); }
  .x-tab-close{
    margin-left: auto; padding: 10px 12px; border-radius: 10px; border: var(--border-soft);
    background: transparent; color: var(--text-muted);
  }
  .x-tab-close:hover{ background: color-mix(in srgb, var(--brand) 10%, transparent); color: var(--text); }

  .x-settings-header{ position: sticky; top: 8px; z-index: 2; }
}

/* Accessibility */
.x-tab:focus-visible, .x-rail-btn:focus-visible, .x-btn:focus-visible, .x-header-close:focus-visible, .x-rail-close:focus-visible{
  outline: none; box-shadow: var(--ring);
}

/* Hide legacy modal styles (optional safety) */
.settings-modal-backdrop, .settings-modal { display: none !important; }

/* ---------------- API Key Help Modal ---------------- */
#apiKeyHelpModal .x-settings-modal {
  width: min(680px, 96vw) !important;
  height: auto !important;
  max-height: 90vh;
  border-radius: 22px;
  display: flex;
  flex-direction: column;
}

#apiKeyHelpModal .x-settings-content {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
}



#apiKeyHelpModal .x-panels {
  flex: 1;
  display: flex;
  flex-direction: column;
}

#apiKeyHelpModal .x-section {
  flex: 1;
  display: flex;
  flex-direction: column;
}

#apiKeyHelpModal .x-actions {
  margin-top: auto;
  padding-top: 20px;
}



/* ===== Mobile Full-screen Book Picker ===== */
.bookpicker-backdrop {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, #000 55%, transparent);
  display: grid;
  place-items: end center;
  z-index: 120; /* above topbar, below AI panel (which is 101-102) */
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s var(--ease);
}

.bookpicker {
  width: 100%;
  max-width: 700px;
  height: 88vh;
  border-top-left-radius: 16px;
  border-top-right-radius: 16px;
  background: var(--panel-glass);
  border: var(--border-strong);
  box-shadow: 0 -20px 120px var(--glow-1), var(--shadow-2);
  transform: translateY(20px);
  opacity: 0.98;
  transition: transform .25s var(--ease), opacity .25s var(--ease);
  display: grid;
  grid-template-rows: auto auto auto 1fr auto;
  overflow: hidden;
  backdrop-filter: blur(14px) saturate(140%);
}

.bookpicker-backdrop.visible {
  opacity: 1;
  pointer-events: auto;
}
.bookpicker-backdrop.visible .bookpicker {
  transform: translateY(0);
  opacity: 1;
}

.bookpicker-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: var(--border-soft);
  background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
}
.bookpicker-title {
  margin: 0;
  font-weight: 800;
  color: var(--brand);
  font-size: 18px;
  letter-spacing: .2px;
}
.bookpicker-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
  border-radius: 10px;
  padding: 6px;
}
.bookpicker-close:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--brand) 10%, transparent);
}

.bookpicker-tabs {
  display: grid;
  grid-auto-flow: column;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: var(--border-soft);
  background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--surface) 60%, transparent));
}
.bookpicker-tab {
  padding: 10px 12px;
  border-radius: 999px;
  border: var(--border-soft);
  background: color-mix(in srgb, var(--elev-2) 92%, transparent);
  color: var(--text);
  font-weight: 700;
}
.bookpicker-tab.active {
  background: var(--brand);
  color: #fff;
  border-color: color-mix(in srgb, #fff 25%, transparent);
}

.bookpicker-search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: var(--border-soft);
  background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
}
.bookpicker-search i { color: var(--text-muted); }
.bookpicker-search input {
  flex: 1;
  padding: 10px 12px;
  background: var(--elev-2);
  border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
  border-radius: 12px;
  color: var(--text);
  font-size: 16px; /* mobile-friendly */
}

.bookpicker-scroller {
  overflow: auto;
  padding: 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--brand) var(--elev-2);
}
.bookpicker-scroller::-webkit-scrollbar { width: 8px; }
.bookpicker-scroller::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--brand) 35%, transparent); border-radius: 10px; }

.bookpicker-panel { min-height: 0; }
.bookpicker-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}
@media (min-width: 520px) {
  .bookpicker-list { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 680px) {
  .bookpicker-list { grid-template-columns: repeat(4, 1fr); }
}

.bookpicker-item {
  padding: 12px 12px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--elev-2) 88%, transparent);
  border: var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  cursor: pointer;
  transition: filter .2s var(--ease), transform .08s var(--ease), box-shadow .2s var(--ease);
  min-height: 48px; /* touch target */
}
.bookpicker-item:hover { filter: brightness(1.06); box-shadow: var(--shadow-1); }
.bookpicker-item:active { transform: translateY(1px); }

.bookpicker-name { font-weight: 700; }
.bookpicker-chaps {
  font-size: 12px;
  color: var(--text-muted);
  background: color-mix(in srgb, var(--brand) 10%, transparent);
  padding: 2px 8px;
  border-radius: 999px;
}

.bookpicker-foot {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px;
  border-top: var(--border-soft);
  background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--elev-2) 92%, transparent));
}

/* Only show modal picker on small screens; keep existing dropdown on larger */
@media (max-width: 700px) {
  #bookPanel { display: none !important; }
}

/* Backdrop click area also closes on mobile */
.bookpicker-backdrop.closeable { cursor: pointer; }
.bookpicker { cursor: default; }

#versionModalBackdrop .x-settings-modal {
  width: min(520px, 96vw) !important;
  height: auto !important;
  max-height: 90vh;
  border-radius: 22px;
  display: flex;
  flex-direction: column;
}

#versionModalBackdrop .x-settings-content {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
}

#versionModalBackdrop .x-panels {
  flex: 1;
  display: flex;
  flex-direction: column;
}

#versionModalBackdrop .x-section {
  flex: 1;
  display: flex;
  flex-direction: column;
}

#versionModalBackdrop .x-field {
  flex: 1;
  display: grid;
  gap: 16px;
}

#versionModalBackdrop .version-btn {
  padding: 16px;
  text-align: left;
}

/* Center both modals vertically and horizontally */
.x-settings-backdrop {
  place-items: center !important;
  padding: 20px;
}

/* Make sure the modals don't get too tall on small screens */
@media (max-height: 700px) {
  #apiKeyHelpModal .x-settings-modal,
  #versionModalBackdrop .x-settings-modal {
    max-height: 85vh;
  }
}

/* Improve scrolling for content */
#apiKeyHelpModal .x-panels,
#versionModalBackdrop .x-panels {
  overflow-y: auto;
  padding: 20px;
}

/* Version cards as premium tiles, using existing .x-rail-btn.version-btn */
.version-btn {
  display: grid;
  align-items: start;
  gap: 4px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--brand) 26%, transparent);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--elev-2) 88%, transparent), color-mix(in srgb, var(--surface) 88%, transparent));
  box-shadow:
    0 10px 24px rgba(0,0,0,.18),
    inset 0 0 0 1px color-mix(in srgb, var(--brand) 10%, transparent);
  position: relative;
  transition: transform .08s var(--ease), filter .2s var(--ease), box-shadow .25s var(--ease);
}
.version-btn::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 14px;
  background: radial-gradient(120% 60% at 0% 0%, color-mix(in srgb, var(--brand) 10%, transparent), transparent 60%);
  opacity: .35;
  pointer-events: none;
}
.version-btn:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
  box-shadow:
    0 16px 38px rgba(0,0,0,.24),
    0 0 0 1px color-mix(in srgb, var(--brand) 28%, transparent),
    inset 0 0 0 1px color-mix(in srgb, var(--brand) 14%, transparent);
}
.version-btn strong {
  font-weight: 800;
  letter-spacing: .2px;
  background: linear-gradient(180deg, var(--text), color-mix(in srgb, var(--text) 70%, transparent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.version-btn small {
  color: var(--text-muted);
}

/* Make the two options feel like a tidy stack */
#versionModalBackdrop .x-field {
  display: grid;
  gap: 10px;
}

/* Close button hover */
#versionModalBackdrop .x-header-close:hover {
  background: color-mix(in srgb, var(--brand) 12%, transparent);
}

    /* Zen Mode Toggle Button */
    /* Remove the fixed positioning for the zen toggle */
#zenToggle {
  position: static;
  width: auto;
  height: auto;
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, color-mix(in srgb, var(--elev-2) 85%, transparent), color-mix(in srgb, var(--surface) 85%, transparent));
  border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
  box-shadow: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 12px;
  transition: transform .08s var(--ease), filter .2s var(--ease), box-shadow .2s var(--ease);
  cursor: pointer;
  white-space: nowrap;
  color: var(--text);
}

#zenToggle:hover {
  filter: brightness(1.06);
  box-shadow: var(--shadow-2);
  transform: none;
}

#zenToggle:active {
  transform: translateY(1px);
}


    
    /* Zen Mode Styles */
    body.zen-mode .topbar,
    body.zen-mode .chapter-rail,
    body.zen-mode .app-footer,
    body.zen-mode #ai-assistant-btn,
    body.zen-mode #ttsMini,
    body.zen-mode #zenToggle,
    body.zen-mode .app-header {
      display: none !important;
    }
    
    body.zen-mode .reader {
      margin: 0;
      border: none;
      border-radius: 0;
      box-shadow: none;
      background: transparent;
      height: 100vh;
      display: inline;
    }
    
    body.zen-mode .reader-header {
      opacity: 0;
      transition: opacity 0.3s ease;
      height: 60px;
      flex-shrink: 0;
    }
    
    body.zen-mode .reader-header:hover {
      opacity: 1;
    }
    
    body.zen-mode .reader-body {
      flex: 1;
      padding: 40px;
      columns: 1;
      column-width: 40ch;
      font-size: 22px;
      line-height: 1.8;
      overflow: hidden;
    }
    
    body.zen-mode .verse {
      break-inside: avoid;
      margin-bottom: 1.2em;
    }
    
    body.zen-mode .verse-num {
      font-size: 14px;
      opacity: 0.7;
    }
    
    /* Exit Zen Mode Button */
    #exitZen {
      position: fixed;
      top: 20px;
      right: 20px;
      padding: 10px 16px;
      background: color-mix(in srgb, var(--surface) 90%, transparent);
      border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
      border-radius: 20px;
      color: var(--text);
      cursor: pointer;
      z-index: 101;
      backdrop-filter: blur(10px);
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    
    body.zen-mode #exitZen {
      opacity: 1;
    }
    
    #exitZen:hover {
      background: color-mix(in srgb, var(--brand) 15%, transparent);
    }

    /* Add to styles.css */
.zen-next-chapter {
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: 12px 20px;
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
  border-radius: 20px;
  color: var(--text);
  cursor: pointer;
  z-index: 101;
  backdrop-filter: blur(10px);
  opacity: 0;
  transition: opacity 0.3s ease;
  font-weight: 500;
  box-shadow: var(--shadow-1);
}

body.zen-mode .zen-next-chapter {
  opacity: 1;
}

.zen-next-chapter:hover {
  background: color-mix(in srgb, var(--brand) 15%, transparent);
}