/* ============================================================
   Author & Student Portal — Brand Design System
   Palette: Navy Blue · Yellow Gold · Crisp White · Deep Gray
   Luxe-editorial aesthetic — Playfair Display + Inter
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,600;0,700;0,800;1,600&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --navy:        #0B2545;
  --navy-700:    #13315C;
  --navy-100:    #E8EDF4;
  --navy-900:    #08182f;
  --gold:        #C9A227;
  --gold-600:    #B08E1E;
  --gold-2:      #e3bd45;
  --gold-3:      #f0d784;
  --gold-soft:   #F5ECCB;
  --white:       #FFFFFF;
  --paper:       #FBFBF9;
  --ink:         #2B2B2B;   /* deep gray text */
  --ink-soft:    #5A6472;
  --border:      #E4E7EC;
  --ok:          #1B7F4B;
  --bad:         #B3261E;
  --shadow:      0 1px 2px rgba(11,37,69,.06), 0 10px 30px rgba(11,37,69,.08);
  --shadow-lg:   0 24px 60px rgba(11,37,69,.16);
  --radius:      14px;
  --maxw:        1120px;
  --ease:        cubic-bezier(.22,.61,.36,1);
  --serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* read-only / no-select defaults (reinforced by security.js) */
body, .lock { -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; }
input, textarea { -webkit-user-select: text; user-select: text; }  /* allow typing in tools */

a { color: var(--navy-700); text-decoration: none; }
h1,h2,h3 { font-family: var(--serif); color: var(--navy); line-height: 1.2; margin: 0 0 .4em; font-weight: 700; }
h1 { font-size: 2.3rem; letter-spacing: -.015em; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.12rem; }
p { margin: 0 0 1em; }
small { color: var(--ink-soft); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(8,24,47,0.82);
  backdrop-filter: blur(14px) saturate(140%);
  color: var(--white);
  border-bottom: 1px solid rgba(201,162,39,.28);
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .mark {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(145deg, var(--gold-2), var(--gold)); color: var(--navy);
  display: grid; place-items: center; font-weight: 800; font-size: 1rem;
  font-family: var(--serif);
  box-shadow: 0 4px 14px rgba(201,162,39,.3);
}
.brand .name { color: var(--white); font-weight: 600; font-size: .98rem; letter-spacing: .01em; }
.brand .sub  { color: #9FB2CC; font-size: .72rem; display: block; }
.topbar nav a { position: relative; color:#D9E3F0; margin-left: 22px; font-size: .85rem; font-weight: 500; transition: color .25s; }
.topbar nav a::after { content:''; position:absolute; left:0; bottom:-6px; height:1.5px; width:0; background:var(--gold); transition:width .3s var(--ease); }
.topbar nav a:hover { color: var(--gold-3); }
.topbar nav a:hover::after { width:100%; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(900px 500px at 75% -20%, #123564 0%, transparent 55%),
    linear-gradient(180deg, var(--navy) 0%, var(--navy-900) 100%);
  color: var(--white); padding: 72px 0;
}
.hero h1 { color: var(--white); max-width: 820px; font-size: clamp(2.1rem, 4vw, 3.1rem); }
.hero p  { color: #D2DCEA; max-width: 680px; font-size: 1.05rem; }
.eyebrow { color: var(--gold-3); font-size: .74rem; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; margin-bottom: 12px; }

/* ---------- Cards / sections ---------- */
.section { padding: 40px 0; }
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.card + .card { margin-top: 22px; }
.grid { display: grid; gap: 18px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 820px){ .grid.cols-2,.grid.cols-3,.grid.cols-4 { grid-template-columns: 1fr; } }

.section-label {
  display:inline-block; font-size:.72rem; font-weight:700; letter-spacing:.12em;
  text-transform:uppercase; color:#7A6212; background:var(--gold-soft);
  border:1px solid #EAD89A; padding:4px 10px; border-radius:999px; margin-bottom:14px;
}

/* ---------- Chapter cards ---------- */
.chip-grid { display:grid; grid-template-columns: repeat(3,1fr); gap:14px; }
@media (max-width: 820px){ .chip-grid { grid-template-columns: 1fr; } }
.chapter-card {
  display:block; background:var(--white); border:1px solid var(--border);
  border-left:4px solid var(--gold); border-radius:10px; padding:16px 18px;
  transition: transform .12s ease, box-shadow .12s ease;
}
.chapter-card { transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s; }
.chapter-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-left-color: var(--navy); }
.chapter-card .n { font-size:.72rem; color:var(--ink-soft); font-weight:700; letter-spacing:.1em; }
.chapter-card .t { font-family:var(--serif); color:var(--navy); font-weight:700; font-size:1.05rem; margin-top:4px; }
.chapter-card.locked { opacity:.55; border-left-color:#CBD2DC; cursor:not-allowed; }

/* ---------- Buttons ---------- */
.btn {
  display:inline-flex; align-items:center; gap:8px; cursor:pointer;
  background: linear-gradient(145deg, var(--gold-2), var(--gold)); color: var(--navy); font-weight: 700;
  border: 0; border-radius: 50px; padding: 12px 24px; font-size: .92rem; font-family: var(--font);
  box-shadow: 0 6px 18px rgba(201,162,39,.28);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s;
}
.btn:hover { background: linear-gradient(145deg, var(--gold-3), var(--gold-2)); color: var(--navy); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(201,162,39,.4); }
.btn.secondary { background: var(--navy); color: var(--white); box-shadow: 0 6px 18px rgba(11,37,69,.25); }
.btn.secondary:hover { background: var(--navy-700); }
.btn.ghost { background: transparent; color: var(--navy); border:1px solid var(--border); box-shadow:none; }
.btn.ghost:hover { background: var(--paper); border-color: var(--gold); }
.btn:disabled { opacity:.5; cursor:not-allowed; transform:none; box-shadow:none; }

/* ---------- Forms ---------- */
label.fld { display:block; font-size:.82rem; font-weight:600; color:var(--ink); margin:0 0 6px; }
input[type=text], input[type=password], input[type=number], select {
  width:100%; padding:11px 12px; border:1px solid var(--border); border-radius:9px;
  font-size:.95rem; color:var(--ink); background:var(--white); font-family:inherit;
}
input:focus, select:focus { outline:none; border-color:var(--gold); box-shadow:0 0 0 3px rgba(201,162,39,.18); }

/* ---------- Tables / ledger ---------- */
table.ledger { width:100%; border-collapse:collapse; font-size:.92rem; }
table.ledger th, table.ledger td { padding:9px 10px; border-bottom:1px solid var(--border); text-align:left; }
table.ledger th { background:var(--navy-100); color:var(--navy); font-size:.78rem; text-transform:uppercase; letter-spacing:.05em; }
table.ledger td.num input { text-align:right; }
table.ledger tfoot td { font-weight:700; background:var(--paper); border-top:2px solid var(--navy); }
.amt { text-align:right; font-variant-numeric: tabular-nums; }

/* ---------- Status pills / feedback ---------- */
.pill { display:inline-block; padding:3px 10px; border-radius:999px; font-size:.78rem; font-weight:700; }
.pill.ok  { background:#E6F4EC; color:var(--ok); }
.pill.bad { background:#FBEAE9; color:var(--bad); }
.note { background:var(--navy-100); border-left:4px solid var(--navy); padding:12px 14px; border-radius:8px; font-size:.9rem; }
.warn { background:#FFF8E6; border-left:4px solid var(--gold); padding:12px 14px; border-radius:8px; font-size:.88rem; color:#6b5a16; }

/* ---------- Decision tree / illustration ---------- */
.tree { display:flex; flex-direction:column; gap:0; }
.tree .node {
  border:1px solid var(--border); border-radius:10px; padding:14px 16px; background:var(--white);
  position:relative;
}
.tree .q { font-weight:700; color:var(--navy); }
.tree .branch { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:12px; }
@media(max-width:640px){ .tree .branch{ grid-template-columns:1fr; } }
.tree .leaf { border-left:4px solid var(--gold); background:var(--gold-soft); border-radius:8px; padding:10px 12px; font-size:.9rem; }

/* matrix / map */
.matrix { display:grid; gap:10px; }
.matrix .row { display:grid; grid-template-columns: 200px 1fr; gap:12px; align-items:start; }
@media(max-width:640px){ .matrix .row{ grid-template-columns:1fr; } }
.matrix .key { font-weight:700; color:var(--navy); background:var(--navy-100); padding:10px 12px; border-radius:8px; }
.matrix .val { padding:10px 12px; border:1px solid var(--border); border-radius:8px; background:var(--white); }

/* ---------- Quiz ---------- */
.q-item { border:1px solid var(--border); border-radius:10px; padding:18px; margin-bottom:14px; background:var(--white); }
.q-item .stem { font-weight:600; color:var(--ink); margin-bottom:12px; }
.opt { display:flex; align-items:flex-start; gap:10px; padding:9px 12px; border:1px solid var(--border); border-radius:8px; margin-bottom:8px; cursor:pointer; }
.opt:hover { border-color:var(--gold); background:var(--paper); }
.opt input { margin-top:3px; }
.opt.correct { border-color:var(--ok); background:#EFF8F2; }
.opt.wrong   { border-color:var(--bad); background:#FCEFEE; }
.rationale { display:none; margin-top:10px; font-size:.9rem; color:var(--ink-soft); border-top:1px dashed var(--border); padding-top:10px; }
.rationale.show { display:block; }
.score-card { text-align:center; padding:24px; border:2px solid var(--gold); border-radius:12px; background:var(--gold-soft); }
.score-card .big { font-size:2.4rem; font-weight:800; color:var(--navy); }

/* ---------- Manuscript vault ---------- */
.vault { border:1px solid var(--border); border-radius:12px; overflow:hidden; background:var(--navy); }
.vault .bar { display:flex; align-items:center; justify-content:space-between; padding:12px 16px; color:var(--white); }
.vault .lockmsg { color:#9FB2CC; font-size:.8rem; }
.vault .frame { height:520px; background:#1b2b3f; display:grid; place-items:center; color:#9FB2CC; }

/* ---------- Footer ---------- */
.foot { border-top:1px solid var(--border); margin-top:40px; padding:26px 0; color:var(--ink-soft); font-size:.82rem; }

/* ---------- Modal / gate ---------- */
.gate { position:fixed; inset:0; background:rgba(8,24,47,.94); backdrop-filter: blur(8px); display:grid; place-items:center; z-index:999; }
.gate .panel { background:var(--white); border-radius:18px; padding:34px; width:min(430px,92vw); box-shadow:var(--shadow-lg); border-top:4px solid var(--gold); }
.hidden { display:none !important; }

/* Fail-closed gating: on gated pages, content is hidden by pure CSS until
   JS confirms access and adds .unlocked to <body>. Disabling JS therefore
   leaves the gate up and the content hidden. */
body.gated main, body.gated .reader { display:none; }
body.gated.unlocked main, body.gated.unlocked .reader { display:block; }

/* ---------- Tagalog Explainer Modal ---------- */
.tl-modal {
  border: none;
  border-radius: 8px;
  padding: 0;
  max-width: 600px;
  width: 90vw;
  box-shadow: 0 8px 32px rgba(11, 37, 69, 0.2);
  font-family: var(--font);
}

.tl-modal::backdrop {
  background: rgba(11, 37, 69, 0.4);
  backdrop-filter: blur(4px);
}

.tl-modal-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tl-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--gold);
  padding-bottom: 12px;
}

.tl-modal-header h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 20px;
  color: var(--navy);
}

.tl-modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--navy);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tl-modal-close:hover {
  color: var(--gold);
}

.tl-modal-body {
  padding: 8px 0;
}

.tl-modal-footer {
  border-top: 1px solid var(--border);
  padding-top: 12px;
  text-align: right;
}

.tl-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  color: var(--navy);
  transition: all 0.2s;
  vertical-align: middle;
  font-family: var(--font);
}

.tl-btn:hover {
  background: var(--gold);
  color: white;
  border-color: var(--gold);
}

/* Mobile responsive */
@media (max-width: 600px) {
  .tl-modal {
    width: 95vw;
    max-width: 100%;
  }
  .tl-modal-content {
    padding: 16px;
  }
}

/* ---------- Print kill ---------- */
@media print { html, body { display:none !important; } }

/* ---------- Quiz V2 (dual-mode, mobile-first) ----------
   Namespaced .qv2-* so it never collides with the legacy .q-item/.opt
   styles still used by Chapters 2-15. Built by Portal.renderQuizV2. */
.qv2 { display:block; }
.qv2-empty { border:1px dashed var(--border); border-radius:10px; padding:18px; color:var(--ink-soft); background:var(--paper); }

/* Segmented Practice | Test toggle */
.qv2-modes { display:inline-flex; gap:4px; padding:4px; background:var(--navy-100); border-radius:999px; margin-bottom:16px; }
.qv2-mode-btn {
  cursor:pointer; border:0; background:transparent; color:var(--navy);
  font-weight:700; font-size:.86rem; font-family:inherit;
  padding:9px 20px; min-height:40px; border-radius:999px; transition:background .15s, color .15s;
}
.qv2-mode-btn:hover { color:var(--navy-700); }
.qv2-mode-btn.active { background:var(--navy); color:var(--white); }

/* Shared buttons inside the widget */
.qv2-btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px; cursor:pointer;
  background:var(--gold); color:var(--navy); font-weight:700; font-family:inherit;
  border:0; border-radius:10px; padding:12px 20px; font-size:.92rem; min-height:44px;
}
.qv2-btn:hover { background:var(--gold-600); }
.qv2-btn.ghost { background:transparent; color:var(--navy); border:1px solid var(--border); }
.qv2-btn:disabled { opacity:.5; cursor:not-allowed; }

/* Practice progress bar */
.qv2-pbar { margin-bottom:16px; }
.qv2-pbar-track { height:8px; background:var(--navy-100); border-radius:999px; overflow:hidden; }
.qv2-pbar-fill { height:100%; background:var(--gold); width:0; transition:width .25s ease; }
.qv2-pbar-label { margin-top:6px; font-size:.82rem; font-weight:600; color:var(--navy); }

/* Question card + options (shared by practice, test, review) */
.qv2-q { border:1px solid var(--border); border-radius:10px; padding:18px; margin-bottom:14px; background:var(--white); }
.qv2-card { border:1px solid var(--border); border-radius:10px; padding:18px; background:var(--white); }
.qv2-stem { font-weight:600; color:var(--ink); margin-bottom:14px; }
/* Data-heavy stems may carry a small table instead of a run-on sentence.
   Reset the stem's bold inside it, right-align figures, and let it scroll
   horizontally rather than overflow on a narrow phone. */
.qv2-stem .qv2-tblwrap { overflow-x:auto; margin:10px 0 2px; }
.qv2-stem table.ledger { font-weight:400; font-size:.88rem; }
.qv2-stem table.ledger td.num, .qv2-stem table.ledger th.num { text-align:right; white-space:nowrap; }
.qv2-opts { display:flex; flex-direction:column; gap:8px; }
.qv2-opt {
  display:block; width:100%; text-align:left; cursor:pointer; font-family:inherit; font-size:.95rem;
  color:var(--ink); background:var(--white); border:1px solid var(--border); border-radius:8px;
  padding:12px 14px; min-height:44px; transition:border-color .12s, background .12s;
}
.qv2-opt:hover:not(:disabled) { border-color:var(--gold); background:var(--paper); }
.qv2-opt.selected { border-color:var(--navy); background:var(--navy-100); font-weight:600; }
.qv2-opt.correct { border-color:var(--ok); background:#EFF8F2; }
.qv2-opt.wrong   { border-color:var(--bad); background:#FCEFEE; }
.qv2-opt.locked  { cursor:default; }
.qv2-opt:disabled { opacity:1; } /* keep answered options fully legible */
.qv2-rat { display:none; margin-top:12px; font-size:.9rem; color:var(--ink-soft); border-top:1px dashed var(--border); padding-top:10px; }
.qv2-rat.show { display:block; }
.qv2-ok  { color:var(--ok); }
.qv2-bad { color:var(--bad); }

.qv2-actions { display:flex; gap:10px; margin-top:16px; }

/* Test-mode wizard head: counter + progress dots */
.qv2-testhead { display:flex; align-items:center; gap:14px; margin-bottom:14px; flex-wrap:wrap; }
.qv2-counter { font-weight:700; color:var(--navy); font-size:.9rem; white-space:nowrap; }
.qv2-dots { display:flex; flex-wrap:wrap; gap:7px; }
.qv2-dot {
  width:13px; height:13px; padding:0; border-radius:50%; cursor:pointer;
  border:1px solid var(--border); background:var(--white); transition:transform .1s;
}
.qv2-dot:hover { transform:scale(1.2); }
.qv2-dot.done   { background:var(--gold); border-color:var(--gold-600); }
.qv2-dot.active { border-color:var(--navy); box-shadow:0 0 0 2px var(--navy); }

/* Test-mode nav */
.qv2-nav { display:flex; justify-content:space-between; gap:10px; margin-top:16px; }
.qv2-nav .qv2-btn { flex:1; }

/* Test-mode results screen */
.qv2-score { text-align:center; padding:24px; border:2px solid var(--gold); border-radius:12px; background:var(--gold-soft); margin-bottom:18px; }
.qv2-score-big { font-size:2.4rem; font-weight:800; color:var(--navy); line-height:1.1; }
.qv2-score-pct { font-weight:700; color:var(--navy); margin:4px 0; }
.qv2-score-band { color:var(--ink); }
.qv2-review { display:block; }

/* Mobile: full-bleed tap targets, dots collapse to the counter, nav pins to bottom */
@media (max-width:640px){
  .qv2-modes { display:flex; width:100%; }
  .qv2-mode-btn { flex:1; }
  .qv2-dots { display:none; }               /* collapse to "7 / 20" counter */
  .qv2-testhead { justify-content:center; }
  .qv2-counter { font-size:1rem; }
  .qv2-nav {
    position:sticky; bottom:0; z-index:2;
    background:var(--white); padding:12px 0; margin-top:14px;
    border-top:1px solid var(--border);
  }
  .qv2-opt { padding:14px; font-size:1rem; }
}

/* ---------- Study progress badges (progress.js) ----------
   Injected client-side on the hub; absent when a chapter is untouched. */
.chapter-card { position: relative; }
.prog-badge {
  display: inline-flex; align-items: center; gap: 5px;
  margin-top: 10px; padding: 3px 10px; border-radius: 999px;
  font-size: .72rem; font-weight: 700; letter-spacing: .01em;
  background: var(--gold-soft, #FBF4DE); color: var(--navy);
  border: 1px solid rgba(201,162,39,.45);
}
.prog-badge.visited { background: #EEF2F7; border-color: var(--border); color: #4A5A70; }
.prog-resume {
  display: inline-block; margin-left: 10px; padding: 4px 12px;
  border-radius: 999px; font-size: .78rem; font-weight: 700;
  background: var(--gold); color: var(--navy); text-decoration: none;
}
.prog-resume:hover { filter: brightness(1.07); }
.prog-reset {
  background: none; border: 0; color: var(--ink-soft, #6B7A90);
  font: inherit; font-size: .74rem; text-decoration: underline;
  cursor: pointer; padding: 0; margin-left: 8px;
}

/* ---------- CPALE-Level Questions (open-ended reveal cards) ----------
   Reusable across chapter workspaces: a <details> disclosure per item,
   revealing the final answer + full worked solution. */
.cpale-src { font-size: .82rem; color: var(--ink-soft); background: var(--gold-soft, #FBF4DE);
  border: 1px solid rgba(201,162,39,.35); border-radius: 8px; padding: 8px 12px; margin-top: 10px; }
.cpale-open { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }
.cpale-item { border: 1px solid var(--border); border-left: 3px solid var(--gold);
  border-radius: 10px; background: var(--white); overflow: hidden; }
.cpale-item[open] { box-shadow: var(--shadow); }
.cpale-item > summary { list-style: none; cursor: pointer; padding: 14px 16px;
  display: flex; gap: 12px; align-items: flex-start; font-size: .95rem; color: var(--ink);
  transition: background .15s; }
.cpale-item > summary::-webkit-details-marker { display: none; }
.cpale-item > summary:hover { background: var(--gold-soft, #FBF4DE); }
.cpale-num { flex: 0 0 auto; font-weight: 800; color: var(--gold); font-variant-numeric: tabular-nums;
  min-width: 1.6em; }
.cpale-q { flex: 1; line-height: 1.5; }
.cpale-item > summary::after { content: "Show ▾"; flex: 0 0 auto; font-size: .72rem; font-weight: 700;
  color: var(--ink-soft); letter-spacing: .03em; white-space: nowrap; margin-top: 2px; }
.cpale-item[open] > summary::after { content: "Hide ▴"; }
.cpale-sol { padding: 0 16px 16px 44px; }
.cpale-final { display: inline-block; font-weight: 800; color: var(--navy);
  background: var(--gold-soft, #FBF4DE); border: 1px solid rgba(201,162,39,.4);
  border-radius: 8px; padding: 5px 12px; margin: 4px 0 10px; }
.cpale-work { font-size: .9rem; color: var(--ink-soft); line-height: 1.65; white-space: normal; }
@media (max-width: 640px) {
  .cpale-sol { padding-left: 16px; }
  .cpale-item > summary { font-size: .9rem; }
}

/* ── Sitewide compliance strip ────────────────────────────────────────────────
   Appears in the footer of every public page. The PayMongo merchant notice
   ("operated and owned by Kalixen Online Store") and the three policy links are
   a payment-gateway requirement, not decoration — do not remove them. */
.legal-line { margin-top:12px; line-height:1.9; font-size:.78rem; opacity:.8; }
.legal-line a { color:inherit; text-decoration:underline; text-underline-offset:2px; }
.legal-line a:hover { color:var(--gold, #C9A227); }
.legal-line .op { display:block; margin-top:4px; opacity:.85; }

/* ---------------------------------------------------------------------------
   IN-PAGE CHAPTER READER  (chapter-01.html, "Read the chapter — free")
   Chapter 1 is free in full, so its manuscript pages are rendered inline
   instead of sending the reader off to preview.html. Everything is scoped
   under .ch-reader so it cannot collide with vault.html, which carries its
   own inline .reader / .page-wrap rules.

   The watermark and the transparent shield are the same DETERRENT used in the
   vault — they stop casual drag-to-save and long-press-to-copy. They do not
   stop screenshots, and nothing in the UI should claim otherwise.
   --------------------------------------------------------------------------- */
.ch-reader-bar {
  display:flex; align-items:center; gap:10px; flex-wrap:wrap;
  margin:14px 0 6px; padding:10px 12px;
  background:var(--navy-100); border-radius:10px;
}
.ch-reader-bar label { font-size:.82rem; font-weight:600; color:var(--navy); }
.ch-reader-bar input {
  width:96px; padding:7px 10px; font:inherit; font-size:.86rem;
  border:1px solid var(--border); border-radius:8px; background:#fff;
}
.ch-reader-count { font-size:.78rem; color:var(--ink-soft); margin-left:auto; }

/* Cap the height so 24 pages don't bury the rest of the workspace; the reader
   scrolls inside itself and the page below stays reachable. */
.ch-reader {
  max-height:78vh; overflow-y:auto; overscroll-behavior:contain;
  padding:14px; margin-top:6px;
  background:var(--navy-100); border:1px solid var(--border); border-radius:12px;
}
.ch-reader .page-wrap { position:relative; margin:0 auto 14px; max-width:760px; }
.ch-reader .page-wrap img {
  width:100%; display:block; aspect-ratio:210 / 297;   /* reserve space before lazy-load,
                                                          so "jump to page" cannot drift */
  border:1px solid var(--border); border-radius:4px;
  box-shadow:var(--shadow); background:#fff;
  -webkit-user-drag:none; user-drag:none; pointer-events:none;
}
.ch-reader .wm {
  position:absolute; inset:0; z-index:1; pointer-events:none;
  background-image:repeating-linear-gradient(-30deg,
    rgba(11,37,69,0) 0 120px, rgba(11,37,69,.02) 120px 240px);
}
.ch-reader .shield { position:absolute; inset:0; z-index:2; background:transparent; }
.ch-reader .pageno {
  text-align:center; font-size:.72rem; color:var(--ink-soft);
  margin:-6px 0 14px;
}
@media (max-width:520px) {
  .ch-reader { max-height:70vh; padding:8px; }
  .ch-reader-count { margin-left:0; width:100%; }
}
@media print { .ch-reader { display:none; } }