:root {
  --bg: #fff8d9;
  --paper: #ffffff;
  --paper-2: #fff3a6;
  --text: #202020;
  --muted: #5d5d5d;
  --line: #222222;
  --blue: #1687d9;
  --blue-dark: #075f9c;
  --pink: #ff4fa3;
  --orange: #ff9d00;
  --green: #2dbd57;
  --danger: #d62828;
  --shadow: 5px 5px 0 rgba(0,0,0,.18);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Verdana, Geneva, Tahoma, Arial, sans-serif;
  background:
    linear-gradient(90deg, rgba(255,255,255,.45) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.45) 1px, transparent 1px),
    linear-gradient(135deg, #fff8d9 0%, #d9f3ff 55%, #ffe0ef 100%);
  background-size: 24px 24px, 24px 24px, auto;
  color: var(--text);
}

a { color: inherit; text-decoration: none; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 18px;
  background: linear-gradient(#22a7ff, #1377c5);
  border-bottom: 4px solid var(--line);
  box-shadow: 0 3px 0 rgba(0,0,0,.2);
}
.brand {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.65rem;
  font-weight: 900;
  color: #fff;
  text-shadow: 2px 2px 0 #004c83;
  letter-spacing: .02em;
}
.brand::before { content: "★ "; color: #ffeb3b; }
nav { display: flex; gap: 8px; align-items: center; }
nav a {
  color: #102033;
  background: #ffef61;
  border: 2px solid #111;
  padding: 7px 12px;
  font-weight: 900;
  box-shadow: 3px 3px 0 rgba(0,0,0,.25);
}
nav a:hover { background: #ff7ab8; color: #fff; }

.page { max-width: 1120px; margin: 0 auto; padding: 26px 16px 60px; }
.narrow { max-width: 760px; }
.hero, .panel {
  background: var(--paper);
  border: 3px solid var(--line);
  border-radius: 2px;
  padding: 24px;
  box-shadow: var(--shadow);
}
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: linear-gradient(135deg, #ffffff 0%, #fff3a6 60%, #ffcfef 100%);
  position: relative;
}
.hero::after {
  content: "NEW!";
  position: absolute;
  right: 18px;
  top: -14px;
  background: #ff4fa3;
  color: #fff;
  border: 3px solid #111;
  padding: 5px 10px;
  font-weight: 900;
  transform: rotate(7deg);
}
h1 {
  margin: 0 0 10px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 5vw, 3.7rem);
  line-height: 1;
  color: #111;
  text-shadow: 2px 2px 0 #ffe26b;
}
h2 { margin-top: 0; }
p { color: var(--muted); line-height: 1.55; }
.eyebrow {
  display: inline-block;
  color: #fff;
  background: var(--pink);
  border: 2px solid #111;
  text-transform: uppercase;
  font-size: .76rem;
  font-weight: 900;
  letter-spacing: .12em;
  padding: 4px 8px;
  margin: 0 0 10px;
}
.muted, .hint { color: var(--muted); }
.hint { font-size: .9rem; background: #e8f7ff; border-left: 5px solid var(--blue); padding: 8px; }

.button, button {
  border: 3px solid #111;
  border-radius: 2px;
  padding: 10px 16px;
  background: #f4f4f4;
  color: var(--text);
  font-weight: 900;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 3px 3px 0 rgba(0,0,0,.25);
  text-transform: uppercase;
  font-size: .88rem;
}
.button:hover, button:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 rgba(0,0,0,.25); }
.button.primary { background: #ffcf33; color: #111; }
.button.primary:hover { background: #ff9d00; }
.button.ghost { background: #e5f7ff; }
.button.danger { background: var(--danger); color: #fff; }
.button:disabled, button:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.mini { padding: 8px 10px; border-radius: 2px; }

.toolbar {
  display: flex;
  gap: 12px;
  margin: 24px 0;
  background: #ffffff;
  border: 3px solid #111;
  padding: 12px;
  box-shadow: var(--shadow);
}
input, select {
  width: 100%;
  background: #fffdf3;
  border: 3px solid var(--line);
  color: var(--text);
  border-radius: 0;
  padding: 12px 14px;
  outline: none;
  font-family: Verdana, Geneva, Tahoma, Arial, sans-serif;
  font-weight: 700;
}
input:focus, select:focus { background: #e8f7ff; border-color: var(--blue); }
select { width: auto; min-width: 190px; }
label { display: block; margin: 20px 0 8px; font-weight: 900; color: #111; }
.actions { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.status { margin-top: 18px; color: var(--green); font-weight: 900; background: #fffdf3; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 20px;
}
.card {
  background: #fff;
  border: 3px solid var(--line);
  border-radius: 0;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .12s ease, background .12s ease;
}
.card:nth-child(4n+1) { background: #fff7bc; }
.card:nth-child(4n+2) { background: #dff6ff; }
.card:nth-child(4n+3) { background: #ffe1f1; }
.card:nth-child(4n+4) { background: #e5ffd9; }
.card:hover { transform: rotate(-1deg) translateY(-3px); background: #fff; }
.cover {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background:
    repeating-linear-gradient(45deg, #fff, #fff 10px, #e9e9e9 10px, #e9e9e9 20px);
  border-bottom: 3px solid #111;
}
.card-content { padding: 13px; }
.card h3 {
  margin: 0 0 8px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.25rem;
}
.card p { margin: 0 0 12px; font-size: .9rem; color: #333; font-weight: 700; }
.empty {
  text-align: center;
  padding: 50px 20px;
  background: #fff;
  border: 3px dashed #111;
  box-shadow: var(--shadow);
}
.hidden { display: none !important; }
.danger-zone { margin-top: 22px; background: #ffe9e9; }

.reader-body {
  background:
    linear-gradient(90deg, rgba(255,255,255,.55) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.55) 1px, transparent 1px),
    #f8fbff;
  background-size: 24px 24px;
}
.readerbar nav { flex-wrap: wrap; justify-content: flex-end; }
.reader-page { max-width: 1080px; margin: 0 auto; padding: 18px; }
.reader-title {
  text-align: center;
  margin: 22px 0;
  background: #fff;
  border: 3px solid #111;
  box-shadow: var(--shadow);
  padding: 16px;
}
.reader-title h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
.pages { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.pages img {
  display: block;
  background: #fff;
  border: 3px solid #111;
  border-radius: 0;
  box-shadow: 5px 5px 0 rgba(0,0,0,.2);
}
.pages.fit-width img { width: min(100%, 980px); height: auto; }
.pages.original img { max-width: none; }
.reader-controls-bottom {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin: 34px 0 60px;
  flex-wrap: wrap;
}

@media (max-width: 720px) {
  .hero { align-items: flex-start; flex-direction: column; }
  .hero::after { right: 10px; }
  .toolbar { flex-direction: column; }
  select { width: 100%; }
  .topbar { align-items: flex-start; gap: 12px; flex-direction: column; }
  .readerbar nav { width: 100%; }
}

.notice {
  margin: 16px 0;
  padding: 10px 14px;
  background: #fff3a6;
  border: 3px solid #111;
  box-shadow: 3px 3px 0 rgba(0,0,0,.18);
  font-weight: 900;
}
.card { position: relative; overflow: hidden; }
.source-tag {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
  border: 2px solid #111;
  padding: 4px 7px;
  font-size: .68rem;
  font-weight: 900;
  box-shadow: 2px 2px 0 rgba(0,0,0,.25);
}
.source-tag.online { background: #2dbd57; color: #fff; }
.source-tag.local { background: #ff9d00; color: #111; }
.tiny-desc {
  font-size: .8rem;
  line-height: 1.35;
  color: #444;
}
pre {
  overflow: auto;
  background: #202020;
  color: #fff3a6;
  border: 3px solid #111;
  padding: 14px;
  box-shadow: inset 3px 3px 0 rgba(255,255,255,.12);
}
code { font-family: Consolas, Monaco, monospace; }
.step-box { margin-top: 18px; }
.checklist li { margin: 8px 0; font-weight: 700; }

/* --- Reader modes + 2015-style theme switcher --- */
.theme-toggle {
  background: #111;
  color: #ffef61;
  min-width: 122px;
}
.theme-toggle:hover { background: #ff4fa3; color: #fff; }
.mini.accent { background: #b7ff57; }

.book-pages {
  min-height: 72vh;
  justify-content: center;
}
.book-shell {
  width: min(100%, 1120px);
  background: #fff3a6;
  border: 3px solid #111;
  box-shadow: 6px 6px 0 rgba(0,0,0,.22);
  padding: 12px;
}
.spread-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  background: #fff;
  border: 3px solid #111;
  padding: 8px;
  color: #111;
}
.spread {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(0,0,0,.12) 0 2px, transparent 2px 50%, rgba(0,0,0,.12) 50% calc(50% + 2px), transparent calc(50% + 2px)),
    #ececec;
  border: 3px solid #111;
  padding: 12px;
}
.page-slot {
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fdfdfd;
  border: 2px solid #111;
}
.book-pages .page-slot img {
  width: 100%;
  max-height: 78vh;
  object-fit: contain;
  border: 0;
  box-shadow: none;
}
.book-pages.original .page-slot img {
  width: auto;
  max-width: 100%;
}

[data-theme="dark"] {
  --bg: #151923;
  --paper: #242b39;
  --paper-2: #31394b;
  --text: #f4f6ff;
  --muted: #c1c7d7;
  --line: #05070c;
  --blue: #5eb7ff;
  --blue-dark: #0e426b;
  --pink: #ff6eb6;
  --orange: #ffb13d;
  --green: #75df83;
  --danger: #ff6060;
  --shadow: 5px 5px 0 rgba(0,0,0,.45);
}

[data-theme="dark"] body {
  background:
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(135deg, #111620 0%, #17304a 55%, #351b31 100%);
  background-size: 24px 24px, 24px 24px, auto;
  color: var(--text);
}
[data-theme="dark"] .reader-body {
  background:
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    #131926;
  background-size: 24px 24px;
}
[data-theme="dark"] .topbar {
  background: linear-gradient(#165786, #102c4a);
  border-bottom-color: #000;
}
[data-theme="dark"] .brand { color: #fff7a8; text-shadow: 2px 2px 0 #000; }
[data-theme="dark"] nav a,
[data-theme="dark"] .button,
[data-theme="dark"] button {
  border-color: #05070c;
  color: #f4f6ff;
  background: #30384a;
  box-shadow: 3px 3px 0 rgba(0,0,0,.5);
}
[data-theme="dark"] nav a { background: #fff06a; color: #111; }
[data-theme="dark"] nav a:hover { background: #ff6eb6; color: #fff; }
[data-theme="dark"] .button.primary { background: #ffb13d; color: #101010; }
[data-theme="dark"] .button.ghost { background: #203d58; color: #e7f6ff; }
[data-theme="dark"] .mini.accent { background: #41682a; color: #f2ffe9; }
[data-theme="dark"] .theme-toggle { background: #fff06a; color: #111; }
[data-theme="dark"] .hero,
[data-theme="dark"] .panel,
[data-theme="dark"] .toolbar,
[data-theme="dark"] .reader-title,
[data-theme="dark"] .empty {
  background: #242b39;
  border-color: #05070c;
  color: var(--text);
}
[data-theme="dark"] .hero {
  background: linear-gradient(135deg, #242b39 0%, #314660 60%, #4c2945 100%);
}
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] label,
[data-theme="dark"] .card h3 { color: #fff7a8; text-shadow: 2px 2px 0 #000; }
[data-theme="dark"] p,
[data-theme="dark"] .muted,
[data-theme="dark"] .hint { color: var(--muted); }
[data-theme="dark"] .hint { background: #18283b; border-left-color: #5eb7ff; }
[data-theme="dark"] input,
[data-theme="dark"] select {
  background: #151923;
  color: #f4f6ff;
  border-color: #05070c;
}
[data-theme="dark"] input:focus,
[data-theme="dark"] select:focus { background: #1f3045; border-color: #5eb7ff; }
[data-theme="dark"] .card,
[data-theme="dark"] .card:nth-child(4n+1),
[data-theme="dark"] .card:nth-child(4n+2),
[data-theme="dark"] .card:nth-child(4n+3),
[data-theme="dark"] .card:nth-child(4n+4) { background: #242b39; color: var(--text); }
[data-theme="dark"] .card p { color: #d7dced; }
[data-theme="dark"] .cover,
[data-theme="dark"] .pages img { background: #151923; border-color: #05070c; }
[data-theme="dark"] .notice,
[data-theme="dark"] .status { background: #31394b; color: #fff7a8; border-color: #05070c; }
[data-theme="dark"] .danger-zone { background: #3a1d24; }
[data-theme="dark"] .book-shell { background: #31394b; border-color: #05070c; }
[data-theme="dark"] .spread-toolbar { background: #151923; color: #f4f6ff; border-color: #05070c; }
[data-theme="dark"] .spread {
  background:
    linear-gradient(90deg, rgba(255,255,255,.12) 0 2px, transparent 2px 50%, rgba(255,255,255,.12) 50% calc(50% + 2px), transparent calc(50% + 2px)),
    #111620;
  border-color: #05070c;
}
[data-theme="dark"] .page-slot { background: #202635; border-color: #05070c; }

@media (max-width: 820px) {
  .spread { grid-template-columns: 1fr; }
  .book-pages .page-slot img { max-height: none; }
}