/* ==========================================================================
   InfoRenens — design tokens
   Palette: kesisen cizgiler / demiryolu gecmisi / cok kulturlu arsiv
   ========================================================================== */

:root {
	--ir-ink: #17191c;
	--ir-paper: #ffffff;
	--ir-red: #e63c1e;
	--ir-steel: #445261;
	--ir-ochre: #d9a441;
	--ir-hairline: #d8d8d3;
	--ir-font-display: 'Space Grotesk', sans-serif;
	--ir-font-body: 'Inter', sans-serif;
	--ir-font-mono: 'IBM Plex Mono', monospace;
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	background: var(--ir-paper);
	color: var(--ir-ink);
	font-family: var(--ir-font-body);
	line-height: 1.6;
}

a {
	color: inherit;
	text-decoration: none;
}

/* ---- Header ---- */

.ir-header {
	border-bottom: 1px solid var(--ir-ink);
}

.ir-header__inner {
	max-width: 1100px;
	margin: 0 auto;
	padding: 18px 24px;
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.ir-logo {
	font-family: var(--ir-font-display);
	font-weight: 700;
	font-size: 18px;
	letter-spacing: 0.02em;
}

.ir-logo__accent {
	color: var(--ir-red);
}

.ir-nav a {
	margin-left: 20px;
	font-size: 14px;
	color: var(--ir-steel);
}

.ir-nav a:hover {
	color: var(--ir-ink);
}

/* ---- Hero (ana sayfa) ---- */

.ir-hero {
	max-width: 1100px;
	margin: 0 auto;
	display: grid;
	grid-template-columns: 1fr 1fr;
	border-bottom: 1px solid var(--ir-ink);
}

.ir-hero__text {
	padding: 48px 24px;
	border-right: 1px solid var(--ir-hairline);
	display: flex;
	flex-direction: column;
	justify-content: space-between;
}

.ir-hero__date {
	font-family: var(--ir-font-mono);
	font-size: 13px;
	color: var(--ir-steel);
	letter-spacing: 0.05em;
	margin-bottom: 8px;
}

.ir-hero__number {
	font-family: var(--ir-font-display);
	font-size: 72px;
	font-weight: 700;
	line-height: 0.9;
	color: var(--ir-red);
	margin-bottom: 16px;
}

.ir-hero__title {
	font-family: var(--ir-font-display);
	font-size: 26px;
	font-weight: 500;
	line-height: 1.25;
	margin: 0 0 24px;
}

.ir-hero__actions {
	display: flex;
	gap: 10px;
}

.ir-hero__cover {
	display: block;
	background: var(--ir-ink);
	min-height: 320px;
}

.ir-hero__cover img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.ir-hero__cover-placeholder {
	width: 100%;
	height: 100%;
	min-height: 320px;
}

/* ---- Buttons ---- */

.ir-btn {
	display: inline-block;
	padding: 10px 18px;
	font-size: 13px;
	font-weight: 500;
	border-radius: 2px;
	border: 1px solid var(--ir-ink);
}

.ir-btn--dark {
	background: var(--ir-ink);
	color: #fff;
}

.ir-btn--outline {
	background: transparent;
	color: var(--ir-ink);
}

.ir-btn--outline:hover {
	background: var(--ir-ink);
	color: #fff;
}

/* ---- Teaser / archive grid ---- */

.ir-teaser,
.ir-archive {
	max-width: 1100px;
	margin: 0 auto;
	padding: 48px 24px;
}

.ir-teaser__head {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	margin-bottom: 24px;
}

.ir-teaser__head h2,
.ir-archive__title {
	font-family: var(--ir-font-display);
	font-weight: 500;
	font-size: 22px;
	margin: 0;
}

.ir-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
	gap: 1px;
	background: var(--ir-hairline);
	border: 1px solid var(--ir-hairline);
}

.ir-card {
	background: var(--ir-paper);
	padding: 16px;
	display: block;
}

.ir-card__cover {
	aspect-ratio: 3 / 4;
	background: var(--ir-steel);
	margin-bottom: 12px;
	overflow: hidden;
}

.ir-card__cover img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.ir-card__placeholder {
	width: 100%;
	height: 100%;
	display: flex;
	align-items: flex-end;
	padding: 10px;
	color: #fff;
	font-family: var(--ir-font-display);
	font-weight: 700;
}

.ir-card__meta {
	display: flex;
	flex-direction: column;
	gap: 4px;
}

.ir-card__title {
	font-size: 13px;
	font-weight: 500;
}

.ir-card__date {
	font-family: var(--ir-font-mono);
	font-size: 11px;
	color: var(--ir-steel);
}

/* ---- Year filter bar ---- */

.ir-yearbar {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-bottom: 24px;
}

.ir-yearbar__item {
	font-family: var(--ir-font-mono);
	font-size: 13px;
	background: transparent;
	border: 1px solid var(--ir-hairline);
	color: var(--ir-steel);
	padding: 6px 14px;
	border-radius: 2px;
	cursor: pointer;
}

.ir-yearbar__item.is-active,
.ir-yearbar__item:hover {
	border-color: var(--ir-red);
	color: var(--ir-red);
}

/* ---- Reader / flipbook ---- */

.ir-reader {
	max-width: 1000px;
	margin: 0 auto;
	padding: 40px 24px 80px;
}

.ir-reader__head {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 20px;
	border-bottom: 1px solid var(--ir-ink);
	padding-bottom: 24px;
	margin-bottom: 32px;
}

.ir-reader__date {
	font-family: var(--ir-font-mono);
	font-size: 13px;
	color: var(--ir-steel);
}

.ir-reader__title {
	font-family: var(--ir-font-display);
	font-weight: 500;
	font-size: 24px;
	margin: 4px 0 0;
}

.ir-book-wrap {
	display: flex;
	flex-direction: column;
	align-items: center;
	background: var(--ir-hairline);
	padding: 40px 20px;
}

.ir-book-loading {
	font-family: var(--ir-font-mono);
	font-size: 13px;
	color: var(--ir-steel);
}

.ir-book {
	margin: 0 auto;
}

.ir-book-controls {
	display: flex;
	align-items: center;
	gap: 16px;
	margin-top: 20px;
}

.ir-book-counter {
	font-family: var(--ir-font-mono);
	font-size: 13px;
	color: var(--ir-steel);
	min-width: 60px;
	text-align: center;
}

.ir-reader__notes {
	margin-top: 40px;
	font-size: 15px;
	color: var(--ir-steel);
}

/* ---- Footer ---- */

.ir-footer {
	border-top: 1px solid var(--ir-ink);
	margin-top: 40px;
}

.ir-footer__inner {
	max-width: 1100px;
	margin: 0 auto;
	padding: 20px 24px;
	display: flex;
	justify-content: space-between;
	font-size: 12px;
	color: var(--ir-steel);
}

/* ---- Responsive ---- */

@media (max-width: 780px) {
	.ir-hero {
		grid-template-columns: 1fr;
	}
	.ir-hero__text {
		border-right: none;
		border-bottom: 1px solid var(--ir-hairline);
	}
	.ir-hero__number {
		font-size: 56px;
	}
	.ir-reader__head {
		flex-direction: column;
	}
}