/* READER module — chapter reader: bar + chapter picker, paragraph menu, pins drawer, read-aloud player, author notes.
 * Views: protected/views/chapter/ready_read.php (+ ready_read_tools.php), script: /js/modules/reader.js.
 * Loaded BEFORE nb.css, so rules that touch nb.css classes use a higher specificity (.nb-reader …).
 * Reading themes (paper, sepia, grey, night, ink) set --reader-bg/-fg/-muted on .nb-reader (nb.css); here the site tokens are
 * remapped onto them inside a themed reader and inside the tools layer (moved to <body> by reader.js, which copies the
 * reader colours onto it and sets data-rd-theme), so every component follows the reading theme. */

/* ------------------------------------------------------------------ tokens */

.nb-reader, .nb-rd-layer {
	--mk-none: color-mix(in oklab, var(--foreground) 50%, transparent);
	--mk-alpha: color-mix(in oklab, var(--muted-foreground) 90%, transparent);
	--mk-beta: var(--success);
	--mk-gamma: var(--warning);
	--mk-delta: var(--destructive);
	--rd-hover: color-mix(in oklab, var(--foreground) 6%, transparent);
	--rd-sel: color-mix(in oklab, var(--foreground) 8%, transparent);
}
.nb-reader.theme-paper, .nb-reader.theme-sepia,
.nb-rd-layer[data-rd-theme="paper"], .nb-rd-layer[data-rd-theme="sepia"] {
	color-scheme: light;
	--destructive: oklch(0.55 0.2 25);
	--success: oklch(0.5 0.13 152);
	--warning: oklch(0.6 0.14 70);
	--elev-3: 0 24px 56px -20px oklch(0 0 0 / 0.22), 0 8px 18px -10px oklch(0 0 0 / 0.14), 0 0 0 1px oklch(0 0 0 / 0.06);
}
.nb-reader.theme-grey, .nb-reader.theme-night, .nb-reader.theme-ink,
.nb-rd-layer[data-rd-theme="grey"], .nb-rd-layer[data-rd-theme="night"], .nb-rd-layer[data-rd-theme="ink"] {
	color-scheme: dark;
	--destructive: oklch(0.7 0.18 25);
	--success: oklch(0.76 0.14 152);
	--warning: oklch(0.8 0.13 78);
	--elev-3: 0 28px 64px -20px oklch(0 0 0 / 0.75), 0 0 0 1px oklch(1 0 0 / 0.08);
}
.nb-reader[class*="theme-"], .nb-rd-layer.is-themed {
	--foreground: var(--reader-fg);
	--muted-foreground: var(--reader-muted);
	--border: color-mix(in oklab, var(--reader-fg) 15%, transparent);
	--input: color-mix(in oklab, var(--reader-fg) 22%, transparent);
	--muted: color-mix(in oklab, var(--reader-fg) 6%, transparent);
	--secondary: color-mix(in oklab, var(--reader-fg) 8%, transparent);
	--accent: color-mix(in oklab, var(--reader-fg) 9%, transparent);
	--card: color-mix(in oklab, var(--reader-fg) 4%, var(--reader-bg));
	--card-solid: color-mix(in oklab, var(--reader-fg) 5%, var(--reader-bg));
	--popover: color-mix(in oklab, var(--reader-fg) 4%, var(--reader-bg));
	--primary: var(--reader-fg);
	--primary-foreground: var(--reader-bg);
	--ring: color-mix(in oklab, var(--reader-fg) 55%, transparent);
	--link: var(--reader-fg);
	--elev-1: none;
}
.nb-reader [hidden], .nb-rd-layer [hidden] { display: none !important; }
/* a flash message above the reader: nb.css pulls .nb-reader up by 28px, which would slide the bar over the message */
.nb-main > div:has(> .alert) + .nb-reader { margin-top: 0; }

/* ------------------------------------------------------------------ sticky bar: back | centred chapter nav | tools */

.nb-reader .nb-reader-bar {
	display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); align-items: center; gap: 8px;
}
.nb-reader[class*="theme-"] .nb-reader-bar { border-bottom-color: var(--border); }
.nb-reader .nb-rd-bar-start { display: flex; align-items: center; min-width: 0; }
.nb-reader .nb-rd-back { max-width: 100%; min-width: 0; justify-content: flex-start; }
.nb-reader .nb-rd-back span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nb-reader .nb-rd-bar-end { display: flex; align-items: center; justify-content: flex-end; gap: 2px; min-width: 0; }
.nb-reader .nb-reader-nav { display: flex; align-items: center; gap: 4px; flex: none; width: clamp(300px, 34vw, 440px); min-width: 0; margin: 0; }
.nb-reader .nb-reader-nav > .nb-icon-btn { flex: none; }
.nb-reader .nb-icon-btn.is-locked { color: var(--foreground); }
.nb-rd-lockdot {
	position: absolute; right: 2px; bottom: 3px; width: 14px; height: 14px; display: grid; place-items: center;
	border-radius: var(--radius-sm); background: var(--warning); color: var(--background);
}
.nb-reader[class*="theme-"] .nb-rd-lockdot { color: var(--reader-bg); }

/* chapter picker: styled button + popover list; the native <select> is the no-JS fallback */
.nb-rd-picker { position: relative; flex: 1 1 auto; min-width: 0; }
.nb-reader .nb-rd-picker .nb-reader-select { width: 100%; height: 36px !important; margin: 0; }
.nb-rd-picker-btn { display: none; }
.nb-reader .nb-rd-picker.is-js .nb-reader-select { display: none; }
.nb-reader .nb-rd-picker.is-js .nb-rd-picker-btn {
	display: flex; align-items: center; gap: 8px; width: 100%; height: 36px; margin: 0; padding: 0 10px 0 12px;
	border: 1px solid var(--border); border-radius: var(--radius); background: var(--card-solid); color: var(--foreground);
	font: 500 13.5px/1.2 var(--font-sans); text-align: left; cursor: pointer; transition: border-color .15s, background-color .15s;
}
.nb-reader .nb-rd-picker-btn:hover { border-color: color-mix(in oklab, var(--foreground) 32%, transparent); }
.nb-reader .nb-rd-picker-btn:focus-visible { outline: 2px solid var(--ring); outline-offset: 1px; }
.nb-reader .nb-rd-picker.is-open .nb-rd-picker-btn { border-color: color-mix(in oklab, var(--foreground) 45%, transparent); }
.nb-rd-picker-btn > svg { flex: none; color: var(--muted-foreground); transition: transform .15s; }
.nb-rd-picker.is-open .nb-rd-picker-btn > svg { transform: rotate(180deg); }
.nb-rd-picker-label { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nb-rd-picker-label .n { color: var(--muted-foreground); }
.nb-rd-picker-label .t { font-weight: 600; }

.nb-rd-chpop {
	position: absolute; top: calc(100% + 8px); left: 0; z-index: 70; display: flex; flex-direction: column;
	width: min(440px, calc(100vw - 16px)); max-height: min(70vh, 540px); overflow: hidden;
	background: var(--popover); color: var(--foreground); border: 1px solid var(--border); border-radius: var(--radius-lg);
	box-shadow: var(--elev-3); font-family: var(--font-sans);
}
.nb-rd-chpop-search {
	display: flex; align-items: center; gap: 8px; flex: none; margin: 10px 10px 2px; padding: 0 10px; height: 36px;
	border: 1px solid var(--border); border-radius: var(--radius); background: var(--card-solid); color: var(--muted-foreground); cursor: text;
}
.nb-rd-chpop-search:focus-within { border-color: var(--ring); }
.nb-reader .nb-rd-chpop-search input[type="search"] {
	flex: 1 1 auto; min-width: 0; width: auto; height: 34px; min-height: 0; margin: 0; padding: 0; border: 0; background: transparent;
	color: var(--foreground); font-size: 13.5px; box-shadow: none !important; outline: none !important;
}
.nb-rd-chpop-list { position: relative; flex: 1 1 auto; margin: 0; padding: 6px; list-style: none; overflow-y: auto; overscroll-behavior: contain; }
.nb-rd-chpop-list li { margin: 0; }
.nb-rd-ch {
	display: grid; grid-template-columns: 3em minmax(0, 1fr) auto; align-items: center; gap: 10px; padding: 7px 10px 7px 4px;
	border-radius: var(--radius); color: var(--foreground); font-size: 13.5px; line-height: 1.35; text-decoration: none;
}
.nb-reader a.nb-rd-ch, .nb-reader a.nb-rd-ch:focus { color: var(--foreground); text-decoration: none; }
.nb-rd-ch .n { color: var(--muted-foreground); font-size: 12px; font-variant-numeric: tabular-nums; text-align: right; }
.nb-rd-ch .t { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nb-rd-ch .ico { display: inline-grid; color: var(--muted-foreground); }
.nb-rd-ch.is-lock .ico { color: var(--warning); }
.nb-reader a.nb-rd-ch:hover { background: var(--rd-hover); color: var(--foreground); text-decoration: none; }
.nb-reader a.nb-rd-ch:focus-visible { background: var(--rd-hover); outline: none; box-shadow: inset 0 0 0 2px var(--ring); }
.nb-rd-ch.is-current { background: var(--rd-sel); font-weight: 600; box-shadow: inset 3px 0 0 var(--foreground); }
.nb-rd-ch.is-current .n { color: var(--foreground); }
.nb-rd-ch.is-disabled { opacity: .45; cursor: not-allowed; }
.nb-rd-chpop-empty { margin: 0; padding: 18px 14px; text-align: center; font-size: 13px; color: var(--muted-foreground); }
.nb-rd-chpop-foot {
	display: flex; align-items: center; justify-content: space-between; gap: 8px; flex: none; padding: 9px 14px;
	border-top: 1px solid var(--border); font-size: 12.5px; color: var(--muted-foreground);
}
.nb-reader .nb-rd-chpop-foot a { display: inline-flex; align-items: center; gap: 6px; color: var(--foreground); font-weight: 550; }

.nb-rd-badge {
	position: absolute; top: 2px; right: 1px; min-width: 15px; height: 15px; padding: 0 4px; box-sizing: border-box;
	border-radius: var(--radius-sm); background: var(--foreground); color: var(--background);
	font: 700 9.5px/15px var(--font-sans); text-align: center; pointer-events: none;
}
.nb-reader[class*="theme-"] .nb-rd-badge { color: var(--reader-bg); }

/* ------------------------------------------------------------------ chapter head, notes, end block */

.nb-rd-readchip { display: inline-flex; align-items: center; gap: 4px; color: var(--success); font-weight: 600; }
.nb-reader .nb-rd-note {
	max-width: var(--reader-width); margin: 0 auto 30px; padding: 14px 18px; box-sizing: border-box;
	border: 1px solid var(--border); border-left: 3px solid color-mix(in oklab, var(--foreground) 40%, transparent);
	border-radius: var(--radius); background: color-mix(in oklab, var(--foreground) 3%, transparent);
	font-family: var(--font-sans); font-size: 14.5px; line-height: 1.6; color: var(--foreground); overflow-wrap: break-word;
}
.nb-reader .nb-rd-note-book { border-left-color: var(--warning); }
.nb-reader .nb-rd-note-after { margin: 34px auto 0; }
.nb-rd-note-lbl { margin-bottom: 6px; font-size: 10.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-foreground); }
.nb-rd-note-body > :first-child { margin-top: 0; }
.nb-rd-note-body > :last-child { margin-bottom: 0; }
.nb-rd-note-body p { margin: 0 0 .6em; }
.nb-rd-note-body img { max-width: 100%; height: auto; border-radius: var(--radius-sm); }
.nb-rd-note-body a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.nb-rd-note-body blockquote { margin: .6em 0; padding-left: 12px; border-left: 2px solid var(--border); color: var(--muted-foreground); }

.nb-reader .nb-rd-end {
	max-width: var(--reader-width); margin: 36px auto 0; padding: 16px 0; display: flex; flex-wrap: wrap; align-items: center;
	justify-content: center; gap: 12px 20px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.nb-rd-support { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px 12px; font-size: 14px; color: var(--muted-foreground); }
.nb-rd-heart { display: inline-grid; color: var(--destructive); }
.nb-reader .nb-rd-readbtn[aria-pressed="true"] {
	color: var(--success); border-color: color-mix(in oklab, var(--success) 45%, transparent);
	background: color-mix(in oklab, var(--success) 10%, transparent);
}
.nb-rd-locked {
	max-width: 520px; margin: 8px auto 0; padding: 30px 22px; display: grid; justify-items: center; gap: 10px; text-align: center;
	border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--card); color: var(--muted-foreground);
}
.nb-rd-locked p { margin: 0; font-size: 15px; color: var(--foreground); }

/* themed reader: buttons follow the reading theme */
.nb-reader[class*="theme-"] .nb-btn:not(.nb-btn-ghost):not(.nb-btn-primary) { background: var(--card-solid); color: var(--foreground); border-color: var(--border); }
.nb-reader[class*="theme-"] .nb-btn:not(.nb-btn-primary):hover { background: var(--muted); }
.nb-reader[class*="theme-"] .nb-btn-primary { background: var(--reader-fg) !important; color: var(--reader-bg) !important; }
.nb-reader[class*="theme-"] a { color: var(--link); }
.nb-reader[class*="theme-"] .nb-reader-head .nb-eyebrow { color: var(--muted-foreground); }

/* ------------------------------------------------------------------ paragraphs: tap target, marks, focus, TTS */

.nb-reader .nb-reader-text p[data-p] {
	position: relative; margin-inline: -12px; margin-bottom: .6em; padding: .2em 12px; border-radius: var(--radius-sm);
	cursor: pointer; scroll-margin-top: 140px; transition: background-color .18s, box-shadow .18s;
	-webkit-tap-highlight-color: transparent;
}
@media (hover: hover) {
	.nb-reader .nb-reader-text p[data-p]:hover { background: color-mix(in oklab, var(--foreground) 3.5%, transparent); }
}
.nb-reader .nb-reader-text p[data-p]:focus { outline: none; }
.nb-reader .nb-reader-text p[data-p]:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }
.nb-reader .nb-reader-text p[data-mark] { --mk: var(--mk-none); box-shadow: inset 3px 0 0 var(--mk); background: color-mix(in oklab, var(--mk) 7%, transparent); }
.nb-reader .nb-reader-text p[data-mark="alpha"] { --mk: var(--mk-alpha); }
.nb-reader .nb-reader-text p[data-mark="beta"] { --mk: var(--mk-beta); background: color-mix(in oklab, var(--mk) 10%, transparent); }
.nb-reader .nb-reader-text p[data-mark="gamma"] { --mk: var(--mk-gamma); background: color-mix(in oklab, var(--mk) 11%, transparent); }
.nb-reader .nb-reader-text p[data-mark="delta"] { --mk: var(--mk-delta); background: color-mix(in oklab, var(--mk) 10%, transparent); }
.nb-reader .nb-reader-text p.is-selected { background: var(--rd-sel); }
.nb-reader .nb-reader-text p[data-mark].is-selected { background: color-mix(in oklab, var(--mk) 16%, transparent); }
.nb-reader .nb-reader-text p.is-speaking {
	background: color-mix(in oklab, var(--warning) 14%, transparent); box-shadow: inset 3px 0 0 var(--warning);
}
.nb-reader .nb-reader-text p.is-flash { animation: nb-rd-flash 2.6s ease-out; }
@keyframes nb-rd-flash {
	0%, 25% { background-color: color-mix(in oklab, var(--warning) 26%, transparent); }
	100% { background-color: transparent; }
}
@media (prefers-reduced-motion: reduce) {
	.nb-reader .nb-reader-text p[data-p] { transition: none; }
	.nb-reader .nb-reader-text p.is-flash { animation: none; background-color: color-mix(in oklab, var(--warning) 20%, transparent); }
}

/* ------------------------------------------------------------------ tools layer (in <body>) */

.nb-rd-layer { font-family: var(--font-sans); color: var(--foreground); }
.nb-rd-layer .nb-icon-btn { color: var(--muted-foreground); }
.nb-rd-layer .nb-icon-btn:hover { background: var(--muted); color: var(--foreground); }
.nb-rd-layer .nb-icon-btn:focus-visible, .nb-rd-layer button:focus-visible, .nb-rd-layer a:focus-visible { outline: 2px solid var(--ring); outline-offset: 1px; }
.nb-rd-layer .nb-rd-x { width: 30px; height: 30px; flex: none; }
.nb-rd-layer.is-themed .nb-btn:not(.nb-btn-primary) { background: var(--card-solid); color: var(--foreground); border-color: var(--border); box-shadow: none; }
.nb-rd-layer.is-themed .nb-btn-ghost { background: transparent; border-color: transparent; }
.nb-rd-layer.is-themed .nb-btn-primary { background: var(--reader-fg) !important; color: var(--reader-bg) !important; }
.nb-rd-layer select, .nb-rd-layer input[type="text"], .nb-rd-layer textarea { background-color: var(--card-solid); color: var(--foreground); border-color: var(--input); }

/* paragraph menu "This paragraph" */
.nb-rd-pop {
	position: absolute; top: 0; left: 0; z-index: 1050; width: min(376px, calc(100vw - 16px)); box-sizing: border-box;
	padding: 8px 12px 12px; background: var(--popover); color: var(--foreground); border: 1px solid var(--border);
	border-radius: var(--radius-lg); box-shadow: var(--elev-3); font-size: 13px;
}
.nb-rd-pop:focus { outline: none; }
.nb-rd-pop-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
.nb-rd-pop-title { font-size: 11px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--foreground); }
.nb-rd-pop-title b { margin-left: 6px; font-weight: 600; letter-spacing: 0; color: var(--muted-foreground); font-variant-numeric: tabular-nums; }
.nb-rd-sec { padding-top: 10px; }
.nb-rd-lbl { margin-bottom: 6px; font-size: 10.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-foreground); }
.nb-rd-row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.nb-rd-row-end { justify-content: flex-end; }
.nb-rd-act {
	display: inline-flex; align-items: center; gap: 6px; height: 32px; margin: 0; padding: 0 10px; box-sizing: border-box;
	border: 1px solid var(--border); border-radius: var(--radius); background: transparent; color: var(--foreground);
	font: 500 13px/1 var(--font-sans); white-space: nowrap; cursor: pointer; transition: background-color .15s, border-color .15s;
}
.nb-rd-act svg { flex: none; color: var(--muted-foreground); }
.nb-rd-act:hover { background: var(--muted); }
.nb-rd-act[aria-pressed="true"], .nb-rd-act[aria-expanded="true"] {
	background: var(--rd-sel); border-color: color-mix(in oklab, var(--foreground) 38%, transparent);
}
.nb-rd-act[aria-pressed="true"] svg, .nb-rd-act[aria-expanded="true"] svg { color: var(--foreground); }
.nb-rd-colors { display: inline-flex; align-items: center; gap: 7px; padding: 0 5px; }
.nb-rd-color {
	--mk: var(--mk-none); width: 22px; height: 22px; margin: 0; padding: 0; border: 0; border-radius: 50%; cursor: pointer;
	background: var(--mk); box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--foreground) 14%, transparent); transition: box-shadow .15s, transform .15s;
}
.nb-rd-color[data-color="alpha"] { --mk: var(--mk-alpha); }
.nb-rd-color[data-color="beta"] { --mk: var(--mk-beta); }
.nb-rd-color[data-color="gamma"] { --mk: var(--mk-gamma); }
.nb-rd-color[data-color="delta"] { --mk: var(--mk-delta); }
.nb-rd-color:hover { transform: scale(1.1); }
.nb-rd-color[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--popover), 0 0 0 4px var(--mk); }
.nb-rd-layer .nb-rd-color:focus-visible { outline: 2px solid var(--ring); outline-offset: 4px; }
.nb-rd-layer select.nb-rd-voice {
	flex: 1 1 130px; width: auto; min-width: 0; max-width: 100%; height: 32px; min-height: 0; margin: 0; padding: 0 8px;
	border-radius: var(--radius); font-size: 12.5px; line-height: 30px;
}
.nb-rd-suggest { display: grid; gap: 8px; margin-top: 10px; }
.nb-rd-field { display: grid; gap: 4px; margin: 0; font-size: 12px; font-weight: 550; color: var(--muted-foreground); }
.nb-rd-layer .nb-rd-field textarea, .nb-rd-layer .nb-rd-field input {
	width: 100%; margin: 0; box-sizing: border-box; font-size: 14px;
}
.nb-rd-layer .nb-rd-field textarea { min-height: 96px; max-height: 40vh; resize: vertical; font-family: var(--font-serif); line-height: 1.55; }
.nb-rd-hint { margin: 0; font-size: 12.5px; line-height: 1.5; color: var(--muted-foreground); }
.nb-rd-hint a { color: var(--foreground); text-decoration: underline; text-underline-offset: 2px; }

/* pins drawer */
.nb-rd-scrim { position: fixed; inset: 0; z-index: 1090; background: oklch(0 0 0 / .42); }
.nb-rd-drawer {
	position: fixed; top: 0; right: 0; bottom: 0; z-index: 1100; display: flex; flex-direction: column; width: min(400px, 92vw);
	box-sizing: border-box; background: var(--popover); color: var(--foreground); border-left: 1px solid var(--border);
	box-shadow: var(--elev-3); transform: translateX(100%); transition: transform .22s ease;
}
.nb-rd-drawer.is-open { transform: none; }
.nb-rd-drawer:focus { outline: none; }
.nb-rd-drawer-head { display: flex; align-items: center; gap: 10px; padding: 14px 12px 12px 18px; border-bottom: 1px solid var(--border); color: var(--muted-foreground); }
.nb-rd-drawer-head h2 { flex: 1; margin: 0; font: 600 16px/1.3 var(--font-sans); color: var(--foreground); }
.nb-rd-drawer-body { flex: 1 1 auto; padding: 8px 12px 28px; overflow-y: auto; overscroll-behavior: contain; }
.nb-rd-drawer-body h3 { margin: 14px 6px 8px; font-size: 10.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-foreground); }
.nb-rd-list { display: grid; gap: 2px; margin: 0; padding: 0; list-style: none; }
.nb-rd-item { display: flex; align-items: flex-start; gap: 2px; margin: 0; }
.nb-rd-item > a {
	flex: 1 1 auto; min-width: 0; display: flex; gap: 10px; padding: 8px; border-radius: var(--radius);
	color: var(--foreground); text-decoration: none;
}
.nb-rd-layer .nb-rd-item > a:hover { background: var(--muted); color: var(--foreground); text-decoration: none; }
.nb-rd-dot { --mk: var(--mk-none); flex: none; width: 10px; height: 10px; margin-top: 4px; border-radius: 50%; background: var(--mk); }
.nb-rd-dot[data-color="alpha"] { --mk: var(--mk-alpha); }
.nb-rd-dot[data-color="beta"] { --mk: var(--mk-beta); }
.nb-rd-dot[data-color="gamma"] { --mk: var(--mk-gamma); }
.nb-rd-dot[data-color="delta"] { --mk: var(--mk-delta); }
.nb-rd-item-body { display: grid; gap: 2px; min-width: 0; }
.nb-rd-item-body .m { font-size: 11.5px; font-weight: 600; color: var(--muted-foreground); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nb-rd-item-body .q {
	display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
	font: 400 13.5px/1.45 var(--font-serif); overflow-wrap: anywhere;
}
.nb-rd-layer .nb-rd-rm { flex: none; width: 30px; height: 30px; margin-top: 4px; opacity: .55; }
.nb-rd-layer .nb-rd-rm:hover, .nb-rd-layer .nb-rd-rm:focus-visible { opacity: 1; }
.nb-rd-empty { margin: 2px 6px 0; font-size: 13px; line-height: 1.5; color: var(--muted-foreground); }
.nb-rd-drawer-body .nb-rd-hint { margin: 18px 6px 0; padding-top: 12px; border-top: 1px solid var(--border); }
html.nb-rd-locked-scroll { overflow: hidden; }

/* read-aloud player */
.nb-rd-tts {
	position: fixed; left: 50%; bottom: 14px; z-index: 1040; transform: translateX(-50%); display: flex; flex-wrap: wrap;
	align-items: center; justify-content: space-between; gap: 6px 12px; width: min(640px, calc(100vw - 16px)); box-sizing: border-box;
	padding: 8px 10px calc(8px + env(safe-area-inset-bottom, 0px)); background: var(--popover); color: var(--foreground);
	border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--elev-3);
}
.nb-rd-tts-main { display: flex; align-items: center; gap: 2px; min-width: 0; }
.nb-rd-layer .nb-rd-tts-play { background: var(--foreground); color: var(--background); }
.nb-rd-layer.is-themed .nb-rd-tts-play { color: var(--reader-bg); }
.nb-rd-layer .nb-rd-tts-play:hover { background: var(--foreground); color: var(--background); opacity: .88; }
.nb-rd-tts-status { margin-left: 8px; font-size: 12.5px; color: var(--muted-foreground); white-space: nowrap; font-variant-numeric: tabular-nums; }
.nb-rd-tts-opts { display: flex; align-items: center; justify-content: flex-end; gap: 8px; flex: 1 1 280px; min-width: 0; }
.nb-rd-tts-field { display: flex; align-items: center; gap: 6px; min-width: 0; margin: 0; font-size: 12px; font-weight: 550; color: var(--muted-foreground); }
.nb-rd-tts-field:first-child { flex: 1 1 auto; justify-content: flex-end; }
.nb-rd-layer .nb-rd-tts-field select {
	width: auto; min-width: 0; max-width: 220px; height: 30px; min-height: 0; margin: 0; padding: 0 6px; font-size: 12.5px; line-height: 28px;
}
.nb-rd-tts-field:first-child select { flex: 1 1 auto; }

/* ------------------------------------------------------------------ small screens */

@media (max-width: 700px) {
	.nb-reader .nb-reader-bar { grid-template-columns: auto minmax(0, 1fr) auto; gap: 4px; }
	.nb-reader .nb-reader-nav { width: auto; gap: 0; }
	.nb-reader .nb-rd-back { padding: 0 8px; }
}
@media (max-width: 560px) {
	.nb-reader .nb-rd-bar-end .hide-xs { display: none; }
	.nb-reader .nb-reader-bar .nb-icon-btn { width: 34px; }
	.nb-reader .nb-rd-picker.is-js .nb-rd-picker-btn { padding: 0 8px; font-size: 13px; }
	.nb-rd-picker-label .n { display: none; }
}
@media (max-width: 640px) {
	.nb-rd-layer .nb-rd-pop {
		position: fixed; top: auto; left: 0; right: 0; bottom: 0; width: auto; max-height: 82vh; overflow-y: auto;
		border-bottom: 0; border-radius: var(--radius-lg) var(--radius-lg) 0 0; padding-bottom: calc(14px + env(safe-area-inset-bottom, 0px));
	}
	.nb-rd-tts { bottom: 0; border-radius: var(--radius-lg) var(--radius-lg) 0 0; border-bottom: 0; width: 100vw; }
	.nb-rd-tts-opts { flex-basis: 100%; }
}

/* ------------------------------------------------------------------ phones: settings panel, full-screen reading */

/* the settings panel was position: fixed inside the blurred sticky bar (backdrop-filter makes the bar its containing block),
   so "bottom: 72px" put it above the top of the screen — now it hangs under the bar across its whole width */
@media (max-width: 700px) {
	.nb-reader #nb-reader-menu { position: static; }
	.nb-reader .nb-reader-settings {
		position: absolute; top: calc(100% + 6px); left: 0; right: 0; bottom: auto; width: auto;
		max-height: calc(100vh - 150px); max-height: calc(100dvh - 150px); overflow-y: auto; overscroll-behavior: contain;
	}
	.nb-reader .nb-reader-settings .nb-seg button { min-height: 36px; }
	.nb-reader .nb-reader-settings .nb-swatches button { width: 36px; height: 36px; }
}
/* the text gets the screen: the site header scrolls away, the reader bar sticks to the very top, the tab bar is hidden
   (the bar has the back / chapter / settings controls; prev-next are at the end of the chapter) */
@media (max-width: 860px) {
	body.route-chapter-ready .nb-header { position: relative; }
	body.route-chapter-ready .nb-reader .nb-reader-bar { top: 0; }
	body.route-chapter-ready .nb-tabbar { display: none; }
	body.route-chapter-ready { padding-bottom: env(safe-area-inset-bottom, 0px); }
	body.route-chapter-ready #nb-toasts { bottom: calc(16px + env(safe-area-inset-bottom, 0px)) !important; }
	.nb-reader .nb-reader-comments { scroll-margin-top: 64px; }
}

/* ------------------------------------------------------------------ prev / next at the end of the chapter
   The columns were 1fr (= at least the min-content of a nowrap button), so a long "Next: <title>" pushed the grid
   ~260 px past a phone screen (and 6 px past a 768 px tablet). Columns may shrink now and the title wraps inside
   the button (it is already cut to 36 characters by the view). */
.nb-reader nav.nb-chapter-nav { grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); }
.nb-reader nav.nb-chapter-nav .nb-btn { min-width: 0; max-width: 100%; white-space: normal; }
.nb-reader nav.nb-chapter-nav .nb-btn > span { min-width: 0; overflow-wrap: anywhere; text-wrap: balance; }
.nb-reader nav.nb-chapter-nav .nb-btn > svg { flex: none; }
/* wider screens: the pair may stand out of the text column a little (centred), so "Chapter 125 - Samadhi True Fire (5)"
   stays on one line as before (the old 1fr columns simply pushed "Next" 30 px past the column on the right) */
@media (min-width: 701px) { .nb-reader nav.nb-chapter-nav { max-width: calc(var(--reader-width) + 120px); } }
@media (max-width: 700px) {
	.nb-reader nav.nb-chapter-nav { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
	.nb-reader nav.nb-chapter-nav .nb-btn { padding: 8px 12px; gap: 6px; font-size: 14px; }
}

/* touch: reaction chips and the small buttons under the chapter are at least 40 px tall */
@media (max-width: 760px), (pointer: coarse) {
	.nb-reader .nb-reactions button { min-height: 40px; box-sizing: border-box; }
	.nb-reader .nb-rd-support .nb-btn-sm, .nb-reader .nb-rd-end .nb-btn-sm { height: 40px; padding: 0 14px; }
	.nb-reader .nb-reader-credits a { display: inline-block; padding: 8px 0; margin: -8px 0; }
}
/* "Back" / "Next" above the chapter names: muted grey was nearly invisible on the dark "Next" button, the label now
   takes the button's own text colour (dimmed by the opacity from nb.css) */
.nb-reader nav.nb-chapter-nav .nb-btn small { color: inherit; }
@media (max-width: 760px), (pointer: coarse) {
	/* the novel title above the chapter heading was a 17 px line */
	.nb-reader .nb-reader-head a.nb-eyebrow { padding: 10px 0; margin-top: -10px; margin-bottom: -4px; }
}