/**
 * 공모과제 — subject board + PDF modal
 * No gradients; solid surfaces and primary accent only.
 */

.subject-page {
	--subject-text: #152033;
	--subject-muted: #5b6678;
	--subject-line: #d7dee8;
	--subject-soft: #f3f6fa;
	--subject-ink: #0f172a;
	padding-top: 0.5rem;
	padding-bottom: 4.5rem;
}

.subject-board__empty {
	margin: 0;
	padding: 2rem;
	border: 1px solid var(--subject-line);
	background: #fff;
	color: var(--subject-muted);
}

.subject-list {
	display: grid;
	grid-template-columns: 1fr;
	gap: 0.85rem;
	list-style: none;
	margin: 0;
	padding: 0;
}

.subject-list__item {
	margin: 0;
}

.subject-item {
	display: grid;
	grid-template-columns: auto minmax(0, 1fr) auto;
	gap: 1.15rem;
	align-items: center;
	width: 100%;
	margin: 0;
	padding: 1.35rem 1.35rem 1.35rem 1.2rem;
	border: 1px solid var(--subject-line);
	border-radius: 14px;
	background: #fff;
	box-shadow: 0 1px 0 rgba(15, 23, 42, 0.03);
	color: inherit;
	text-align: left;
	cursor: pointer;
	transition:
		border-color 180ms ease,
		background-color 180ms ease,
		box-shadow 180ms ease,
		transform 180ms ease;
}

.subject-item:hover:not(:disabled),
.subject-item:focus-visible {
	border-color: color-mix(in srgb, var(--primary, #0088cc) 45%, var(--subject-line));
	background: #fff;
	box-shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
	outline: none;
	transform: translateY(-2px);
}

.subject-item:focus-visible {
	border-color: var(--primary, #0088cc);
	box-shadow:
		0 0 0 3px color-mix(in srgb, var(--primary, #0088cc) 18%, transparent),
		0 10px 28px rgba(15, 23, 42, 0.08);
}

.subject-item:active:not(:disabled) {
	transform: translateY(0);
	box-shadow: 0 1px 0 rgba(15, 23, 42, 0.03);
}

.subject-item:disabled {
	cursor: not-allowed;
	opacity: 0.55;
}

.subject-item__index {
	display: inline-grid;
	place-items: center;
	width: 3.1rem;
	height: 3.1rem;
	border-radius: 12px;
	background: color-mix(in srgb, var(--primary, #0088cc) 10%, #fff);
	color: var(--primary, #0088cc);
	font-size: 1.125rem;
	font-weight: 800;
	letter-spacing: -0.04em;
	line-height: 1;
	font-variant-numeric: tabular-nums;
}

.subject-item__body {
	display: flex;
	flex-direction: column;
	gap: 0.4rem;
	min-width: 0;
}

.subject-item__org {
	color: var(--subject-muted);
	font-size: 0.875rem;
	font-weight: 700;
	letter-spacing: -0.01em;
}

.subject-item__title {
	color: var(--subject-text);
	font-size: clamp(1.05rem, 1.6vw, 1.25rem);
	font-weight: 700;
	letter-spacing: -0.03em;
	line-height: 1.45;
	word-break: keep-all;
}

.subject-item__action {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	padding: 0.55rem 0.85rem;
	border-radius: 999px;
	background: color-mix(in srgb, var(--primary, #0088cc) 10%, #fff);
	color: var(--primary, #0088cc);
	font-size: 0.875rem;
	font-weight: 700;
	white-space: nowrap;
}

.subject-item__action-icon {
	width: 1.05rem;
	height: 1.05rem;
	transition: transform 180ms ease;
}

.subject-item:hover:not(:disabled) .subject-item__action-icon,
.subject-item:focus-visible .subject-item__action-icon {
	transform: translateX(4px);
}

@media (max-width: 767.98px) {
	.subject-list {
		gap: 0.75rem;
	}

	.subject-item {
		grid-template-columns: auto minmax(0, 1fr);
		gap: 0.9rem 1rem;
		padding: 1.15rem;
	}

	.subject-item__index {
		width: 2.75rem;
		height: 2.75rem;
		font-size: 1rem;
	}

	.subject-item__action {
		grid-column: 2;
		justify-self: start;
		padding: 0.45rem 0.75rem;
	}

	.subject-item__action-label {
		display: none;
	}
}

/* Modal */
.subject-modal .modal-dialog.subject-modal__dialog {
	width: min(1500px, calc(100vw - 1.25rem));
	max-width: min(1500px, calc(100vw - 1.25rem));
	margin: 0.75rem auto;
}

.subject-modal__content {
	border-radius: 14px;
	overflow: hidden;
	background: #fff;
}

.subject-modal__header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	padding: 1.15rem 1.25rem;
	border-bottom: 1px solid var(--subject-line);
	background: #fff;
}

.subject-modal__title {
	margin: 0;
	min-width: 0;
	flex: 1;
	color: var(--subject-ink);
	font-size: clamp(1.05rem, 1.8vw, 1.35rem);
	font-weight: 800;
	letter-spacing: -0.03em;
	line-height: 1.35;
	word-break: keep-all;
}

.subject-modal__header-actions {
	display: flex;
	align-items: center;
	gap: 0.65rem;
	flex-shrink: 0;
}

.subject-modal__download {
	display: inline-flex;
	align-items: center;
	gap: 0.45rem;
	padding: 0.7rem 1rem;
	border-radius: 8px;
	background: var(--primary, #0088cc);
	color: #fff !important;
	font-size: 0.9rem;
	font-weight: 700;
	line-height: 1.2;
	text-decoration: none !important;
	transition: background-color 160ms ease, transform 160ms ease;
}

.subject-modal__download:hover,
.subject-modal__download:focus-visible {
	background: color-mix(in srgb, var(--primary, #0088cc) 88%, #000);
	color: #fff !important;
	outline: none;
}

.subject-modal__download:active {
	transform: translateY(1px);
}

.subject-modal__download-icon {
	width: 1.05rem;
	height: 1.05rem;
}

.subject-modal__close {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 2.4rem;
	height: 2.4rem;
	padding: 0;
	border: 1px solid var(--subject-line);
	border-radius: 8px;
	background: #fff;
	color: var(--subject-muted);
	cursor: pointer;
}

.subject-modal__close:hover,
.subject-modal__close:focus-visible {
	border-color: var(--primary, #0088cc);
	color: var(--primary, #0088cc);
	outline: none;
}

.subject-modal__close svg {
	width: 1.15rem;
	height: 1.15rem;
}

.subject-modal__viewer-wrap {
	padding: 0.85rem 1rem 1rem;
	background: #e8edf3;
}

.subject-modal__viewer {
	position: relative;
	height: min(78vh, 860px);
	overflow: hidden;
	border: 1px solid #c9d3df;
	border-radius: 8px;
	background: #1f2937;
}

.subject-modal__iframe {
	display: block;
	width: 100%;
	height: 100%;
	border: 0;
	background: #fff;
}

.subject-modal__empty {
	position: absolute;
	inset: 0;
	display: grid;
	place-items: center;
	margin: 0;
	padding: 1.5rem;
	color: #e2e8f0;
	font-size: 1rem;
	font-weight: 600;
	text-align: center;
	word-break: keep-all;
}

@media (max-width: 767.98px) {
	.subject-modal__header {
		flex-direction: column;
		align-items: stretch;
	}

	.subject-modal__header-actions {
		justify-content: space-between;
	}

	.subject-modal__download {
		flex: 1;
		justify-content: center;
	}

	.subject-modal__viewer {
		height: min(72vh, 640px);
		min-height: 22rem;
	}
}