/**
 * AryuVeda — eBook Reader
 * Standalone fullscreen immersive reader. No site header or footer rendered.
 * Desktop/Tablet: two-column (image | content). Mobile ≤767px: stacked.
 */

/* ── Standalone body reset ───────────────────────────────────── */
body.ebook-reader-standalone {
	margin: 0;
	padding: 0;
	overflow-x: hidden;
	background: #1E2E1C;
	font-family: var(--font-body, 'Inter', sans-serif);
}

/* ── Page wrapper ────────────────────────────────────────────── */
.ebook-reader-page {
	--er-dark:  #1E2E1C;
	--er-green: #2E4A2C;
	--er-gold:  #C9A84C;

	min-height: 100vh;
	width: 100%;
	display: flex;
	flex-direction: column;
	position: relative;
	overflow: hidden;
	background: linear-gradient(135deg, var(--er-dark) 0%, var(--er-green) 60%, #1a4a2e 100%);
}

/* ── Back Button — fixed so always visible ───────────────────── */
.ebook-reader__back-btn {
	position: fixed;
	top: 20px;
	left: 20px;
	z-index: 100;
	display: flex;
	align-items: center;
	gap: 6px;
	padding: 8px 14px 8px 10px;
	border-radius: 9999px;
	color: rgba(255,255,255,0.75);
	background: rgba(0,0,0,0.28);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	border: 1px solid rgba(255,255,255,0.12);
	text-decoration: none;
	font-size: 13px;
	font-weight: 500;
	letter-spacing: 0.01em;
	line-height: 1;
	transition: color 0.2s, background 0.2s, border-color 0.2s;
}
.ebook-reader__back-btn:hover {
	color: #fff;
	background: rgba(0,0,0,0.48);
	border-color: rgba(255,255,255,0.25);
}
.ebook-reader__back-label { line-height: 1; }

/* ── Ambient Background ──────────────────────────────────────── */
.ebook-reader__ambient-bg {
	position: absolute;
	inset: 0;
	overflow: hidden;
	pointer-events: none;
}
.ebook-reader__ambient-circle { position: absolute; border-radius: 50%; }
.ebook-reader__ambient-circle--gold {
	top: -160px; right: -160px;
	width: 520px; height: 520px;
	background: var(--er-gold);
	opacity: 0.07;
	animation: erPulseGold 7s ease-in-out infinite;
}
.ebook-reader__ambient-circle--green {
	bottom: -120px; left: -120px;
	width: 440px; height: 440px;
	background: #8FA663;
	opacity: 0.05;
	animation: erPulseGreen 9s ease-in-out infinite 2s;
}
@keyframes erPulseGold {
	0%,100% { transform: scale(1);    opacity: 0.05; }
	50%      { transform: scale(1.15); opacity: 0.11; }
}
@keyframes erPulseGreen {
	0%,100% { transform: scale(1);    opacity: 0.04; }
	50%      { transform: scale(1.20); opacity: 0.09; }
}

/* ── Responsive Layout ────────────────────────────────────────── */
.ebook-reader__layout {
	position: relative;
	z-index: 10;
	display: grid;
	grid-template-columns: 1fr;
	width: 100%;
	max-width: 440px;
	margin: 0 auto;
	padding: 80px 24px 64px;
	min-height: 100vh;
	box-sizing: border-box;
	gap: 28px;
}

@media (min-width: 1024px) {
	.ebook-reader__layout {
		grid-template-columns: clamp(280px, 28vw, 400px) 1fr;
		max-width: 1320px;
		gap: clamp(36px, 5vw, 64px);
		padding: 88px 48px 64px;
		align-items: start;
	}
	.ebook-reader__image-col {
		position: sticky;
		top: 40px;
	}
	.ebook-reader__cover-card {
		max-width: 100%;
		max-height: 62vh;
	}
	.ebook-reader__header-meta,
	.ebook-reader__category,
	.ebook-reader__title,
	.ebook-reader__subtitle,
	.ebook-reader__no-audio-msg,
	.ebook-reader__kbd-hint {
		text-align: left;
	}
	.ebook-reader__no-audio {
		align-items: flex-start;
	}
}

/* ── Image Column ────────────────────────────────────────────── */
.ebook-reader__image-col {
	width: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
}

/* ── Cover Card (1:1 Fixed Square with Ambient Dual Layer) ────── */
.ebook-reader__cover-card {
	position: relative;
	width: 100%;
	aspect-ratio: 1 / 1;
	border-radius: 24px;
	overflow: hidden;
	box-shadow:
		0 40px 80px -16px rgba(0,0,0,0.7),
		0 12px 32px rgba(0,0,0,0.4);
	background: linear-gradient(135deg, rgba(201,168,76,0.12), rgba(46,74,44,0.5));
	animation: erFadeUp 0.55s cubic-bezier(0.22,1,0.36,1) both;
}

/* Layer 1: Ambient background blur fill */
.ebook-reader__cover-bg-blur {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	object-fit: cover;
	filter: blur(22px);
	transform: scale(1.1);
	opacity: 0.55;
	z-index: 0;
	pointer-events: none;
	user-select: none;
}

/* Layer 2: Main image - object-contain preserves full composition */
.ebook-reader__cover-img {
	position: relative;
	z-index: 1;
	width: 100%;
	height: 100%;
	object-fit: contain;
	display: block;
}
.ebook-reader__cover-placeholder {
	width: 100%;
	aspect-ratio: 1 / 1;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 80px;
	opacity: 0.25;
}

/* ── Waveform overlay (playing only) ────────────────────────── */
.ebook-reader__waveform {
	position: absolute;
	left: 0; right: 0; bottom: 0;
	display: flex;
	align-items: flex-end;
	justify-content: center;
	gap: 2px;
	height: 56px;
	padding: 0 12px 10px;
	background: linear-gradient(to top, rgba(30,46,28,0.85), transparent);
	opacity: 0;
	transition: opacity 0.35s ease;
	pointer-events: none;
	z-index: 2;
}
.ebook-reader-page.is-playing .ebook-reader__waveform { opacity: 1; }
.ebook-reader__waveform-bar {
	width: 3px;
	border-radius: 2px;
	background: var(--er-gold);
	flex-shrink: 0;
	transform-origin: bottom;
	animation: erWaveBar var(--bar-duration,0.6s) ease-in-out infinite var(--bar-delay,0s);
}
@keyframes erWaveBar {
	0%,100% { transform: scaleY(1); }
	50%      { transform: scaleY(1.9); }
}

/* ── State Badge ─────────────────────────────────────────────── */
.ebook-reader__state-badge {
	position: absolute;
	top: 12px; right: 12px;
	padding: 4px 10px;
	border-radius: 9999px;
	font-size: 10px;
	font-weight: 700;
	letter-spacing: 0.1em;
	color: rgba(255,255,255,0.7);
	background: rgba(30,46,28,0.72);
	backdrop-filter: blur(6px);
	-webkit-backdrop-filter: blur(6px);
	transition: background 0.3s, color 0.3s, transform 0.3s;
	z-index: 2;
}
.ebook-reader-page.is-playing .ebook-reader__state-badge {
	background: var(--er-gold);
	color: var(--er-dark);
	animation: erBadgePulse 1.5s ease-in-out infinite;
}
@keyframes erBadgePulse {
	0%,100% { transform: scale(1);    opacity: 0.9; }
	50%      { transform: scale(1.08); opacity: 1;   }
}

/* ── Content Column ──────────────────────────────────────────── */
.ebook-reader__content-col {
	width: 100%;
	display: flex;
	flex-direction: column;
	gap: 24px;
	animation: erFadeUp 0.55s cubic-bezier(0.22,1,0.36,1) 0.12s both;
}

/* ── Header Meta ─────────────────────────────────────────────── */
.ebook-reader__header-meta { text-align: center; }
.ebook-reader__category {
	font-size: 11px;
	font-weight: 700;
	letter-spacing: 0.2em;
	color: var(--er-gold);
	text-transform: uppercase;
	margin: 0 0 8px;
	text-align: center;
}
.ebook-reader__title {
	font-family: var(--font-display, 'Playfair Display', serif);
	font-size: 1.25rem;
	font-weight: 700;
	color: #fff;
	line-height: 1.25;
	margin: 0 0 4px;
	text-align: center;
}
.ebook-reader__subtitle {
	font-size: 12px;
	color: rgba(255,255,255,0.5);
	margin: 0;
	letter-spacing: 0.04em;
	text-align: center;
}

/* ── Audio Player ────────────────────────────────────────────── */
.ebook-reader__player {
	display: flex;
	flex-direction: column;
	gap: 20px;
}

/* Progress bar */
.ebook-reader__progress-wrap {
	display: flex;
	flex-direction: column;
	gap: 8px;
}
.ebook-reader__progress-track {
	position: relative;
	height: 5px;
	border-radius: 9999px;
	overflow: hidden;
	background: rgba(255,255,255,0.12);
	cursor: pointer;
}
.ebook-reader__progress-fill {
	position: absolute;
	top: 0; bottom: 0; left: 0;
	width: 0%;
	background: var(--er-gold);
	border-radius: 9999px;
	transition: width 0.1s linear;
	pointer-events: none;
}
.ebook-reader__progress-input {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	opacity: 0;
	cursor: pointer;
	margin: 0;
}
.ebook-reader__time-labels {
	display: flex;
	justify-content: space-between;
	font-size: 11px;
	color: rgba(255,255,255,0.38);
	font-variant-numeric: tabular-nums;
}

/* Controls row */
.ebook-reader__controls {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 32px;
}
.ebook-reader__skip-btn {
	background: none;
	border: none;
	cursor: pointer;
	color: rgba(255,255,255,0.55);
	padding: 10px;
	display: flex;
	align-items: center;
	border-radius: 50%;
	transition: color 0.2s, background 0.2s;
}
.ebook-reader__skip-btn:hover {
	color: #fff;
	background: rgba(255,255,255,0.07);
}
.ebook-reader__play-btn {
	width: 68px;
	height: 68px;
	border-radius: 50%;
	background: var(--er-gold);
	border: none;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	box-shadow:
		0 8px 28px rgba(201,168,76,0.38),
		0 4px 12px rgba(0,0,0,0.35);
	transition: transform 0.15s ease, box-shadow 0.15s ease;
	flex-shrink: 0;
}
.ebook-reader__play-btn:hover  { transform: scale(1.06); box-shadow: 0 12px 36px rgba(201,168,76,0.5), 0 4px 16px rgba(0,0,0,0.35); }
.ebook-reader__play-btn:active { transform: scale(0.93); }

/* Volume */
.ebook-reader__volume-wrap {
	display: flex;
	align-items: center;
	gap: 8px;
}
.ebook-reader__vol-btn {
	background: none;
	border: none;
	cursor: pointer;
	color: rgba(255,255,255,0.38);
	padding: 0;
	display: flex;
	align-items: center;
	transition: color 0.2s;
}
.ebook-reader__vol-btn:hover { color: rgba(255,255,255,0.7); }
.ebook-reader__vol-slider {
	width: 0;
	overflow: hidden;
	transition: width 0.25s ease;
	display: flex;
	align-items: center;
}
.ebook-reader__vol-slider.is-open { width: 88px; }
.ebook-reader__vol-input {
	width: 88px;
	height: 4px;
	cursor: pointer;
	accent-color: var(--er-gold);
	display: block;
}
.ebook-reader__vol-pct {
	font-size: 11px;
	color: rgba(255,255,255,0.38);
	min-width: 30px;
	display: none;
}
.ebook-reader__vol-slider.is-open ~ .ebook-reader__vol-pct { display: inline; }

/* ── No Audio State ──────────────────────────────────────────── */
.ebook-reader__no-audio {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 10px;
	padding: 4px 0;
}
.ebook-reader__no-audio-icon svg {
	display: block;
	opacity: 0.85;
}
.ebook-reader__no-audio-msg { text-align: left; }
.ebook-reader__no-audio-msg p { margin: 0; }
.er-msg-main { color: rgba(255,255,255,0.75); font-size: 0.9rem; font-weight: 600; letter-spacing: 0.01em; }
.er-msg-sub  { color: rgba(255,255,255,0.4); font-size: 0.78rem; margin-top: 4px !important; }

/* ── Description — Matches Pin Detail Page formatting ───── */
.ebook-reader__description-wrap {
	border-top: 1px solid rgba(255,255,255,0.08);
	padding-top: 20px;
	animation: erFadeIn 0.5s ease-out 0.35s both;
}
.ebook-reader__description {
	font-size: 1rem;
	color: rgba(255, 255, 255, 0.90);
	line-height: 1.8;
	margin: 0;
	text-align: left;
	letter-spacing: 0.01em;
	white-space: pre-wrap;   /* preserves \n paragraphs, bullets — matches Pin detail page */
	word-break: break-word;
	overflow-wrap: anywhere;
}

/* ── Keyboard Hint ───────────────────────────────────────────── */
.ebook-reader__kbd-hint {
	font-size: 11px;
	color: rgba(255,255,255,0.25);
	margin: 4px 0 0;
	text-align: center;
}

/* ── Animations ──────────────────────────────────────────────── */
@keyframes erFadeUp {
	from { opacity: 0; transform: translateY(28px); }
	to   { opacity: 1; transform: translateY(0); }
}
@keyframes erFadeIn {
	from { opacity: 0; }
	to   { opacity: 1; }
}

/* ── Tablet 768–1023px: narrower two-column ──────────────────── */
@media (max-width: 1023px) {
	.ebook-reader__layout {
		gap: 44px;
		padding: 88px 36px 56px;
	}
	.ebook-reader__cover-card { max-width: 340px; }
	.ebook-reader__title { font-size: 1.65rem; }
}

/* ── Mobile ≤767px: stacked single column ────────────────────── */
@media (max-width: 767px) {
	.ebook-reader__layout {
		grid-template-columns: 1fr;
		gap: 28px;
		padding: 80px 20px 52px;
		align-items: start;
		min-height: unset;
	}
	.ebook-reader__image-col { justify-content: center; }
	.ebook-reader__cover-card {
		max-width: 260px;
		margin: 0 auto;
	}
	.ebook-reader__cover-img { max-height: 52vw; }
	.ebook-reader__header-meta { text-align: center; }
	.ebook-reader__no-audio { align-items: center; }
	.ebook-reader__no-audio-msg { text-align: center; }
	.ebook-reader__description { text-align: left; }
	.ebook-reader__kbd-hint { text-align: center; }
	.ebook-reader__controls { gap: 24px; }
	.ebook-reader__play-btn { width: 60px; height: 60px; }
}

/* ── Reduced Motion ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
	.ebook-reader__ambient-circle,
	.ebook-reader__waveform-bar,
	.ebook-reader__state-badge,
	.ebook-reader__cover-card,
	.ebook-reader__content-col,
	.ebook-reader__description-wrap { animation: none !important; transition: none !important; }
}