/* ──────────────────────────────────────
   原稿用紙換算ツール
   ────────────────────────────────────── */

.genkou-calc {
	max-width: 100%;
	font-family: var(--portal-body-font, system-ui, sans-serif);
	font-size: var(--portal-body-size, 16px);
	line-height: 1.7;
}

.genkou-calc p {
	margin: 0;
}

/* ── sections ── */

.gc-sec {
	border-top: 1px solid var(--portal-border, #e0e0e0);
	padding: 28px 0 32px;
}

.gc-label {
	font-size: 0.75em;
	font-weight: 700;
	letter-spacing: 0.3em;
	text-transform: uppercase;
	color: var(--portal-muted, rgba(26,26,26,0.6));
	margin-bottom: 20px;
}

/* ── presets ── */

.gc-presets {
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
	margin-bottom: 20px;
}

.gc-preset {
	height: 28px;
	padding: 0 10px;
	border: 1px solid var(--portal-accent, #1a1a1a);
	background: transparent;
	color: var(--portal-text, #1a1a1a);
	font-family: inherit;
	font-size: 11px;
	font-weight: 600;
	letter-spacing: 0.06em;
	cursor: pointer;
	transition: background 0.15s, color 0.15s;
	font-variant-numeric: tabular-nums;
}

.gc-preset:hover,
.gc-preset.on {
	background: var(--portal-accent, #1a1a1a);
	color: var(--portal-accent-text, #fff);
}

.gc-preset:focus-visible {
	outline: 2px solid var(--portal-accent, #1a1a1a);
	outline-offset: 2px;
}

/* ── field rows ── */

.gc-row {
	display: flex;
	align-items: center;
	gap: 10px;
	flex-wrap: wrap;
}

.gc-pair {
	display: flex;
	align-items: center;
	gap: 6px;
}

.gc-lb {
	font-size: 0.875em;
	color: var(--portal-muted, rgba(26,26,26,0.6));
	white-space: nowrap;
	letter-spacing: 0.04em;
}

.genkou-calc input[type="number"] {
	width: 64px;
	height: 38px;
	padding: 0 8px;
	background: var(--portal-bg-alt, #f5f5f5);
	border: 1px solid transparent;
	border-radius: 0;
	color: var(--portal-text, #1a1a1a);
	font-family: inherit;
	font-size: 16px;
	font-weight: 600;
	font-variant-numeric: tabular-nums;
	text-align: center;
	-moz-appearance: textfield;
	transition: border-color 0.15s;
}

.genkou-calc input[type="number"]::-webkit-inner-spin-button,
.genkou-calc input[type="number"]::-webkit-outer-spin-button {
	-webkit-appearance: none;
	margin: 0;
}

.genkou-calc input[type="number"]:focus {
	outline: none;
	border-color: var(--portal-accent, #1a1a1a);
}

.gc-sym {
	font-size: 0.875em;
	color: var(--portal-muted, rgba(26,26,26,0.6));
	user-select: none;
}

.gc-pp {
	font-size: 0.875em;
	font-weight: 600;
	font-variant-numeric: tabular-nums;
	letter-spacing: 0.02em;
}

/* ── target ── */

.gc-tgt-bar {
	display: flex;
	align-items: center;
	gap: 8px;
	margin-bottom: 24px;
	flex-wrap: wrap;
}

.gc-tgt-text {
	font-size: 0.875em;
	letter-spacing: 0.02em;
}

.gc-tgl {
	font-family: inherit;
	font-size: 10px;
	font-weight: 600;
	letter-spacing: 0.12em;
	color: var(--portal-muted, rgba(26,26,26,0.6));
	background: transparent;
	border: 1px solid var(--portal-border, #e0e0e0);
	padding: 2px 8px;
	cursor: pointer;
	transition: color 0.15s, border-color 0.15s;
}

.gc-tgl:hover {
	color: var(--portal-text, #1a1a1a);
	border-color: var(--portal-text, #1a1a1a);
}

.gc-tgl:focus-visible {
	outline: 2px solid var(--portal-accent, #1a1a1a);
	outline-offset: 2px;
}

.gc-tgt-custom {
	margin-bottom: 24px;
}

.gc-sub-lb {
	font-size: 0.8125em;
	color: var(--portal-muted, rgba(26,26,26,0.6));
	letter-spacing: 0.04em;
	margin-bottom: 8px;
}

.gc-unit {
	font-size: 0.8125em;
	color: var(--portal-muted, rgba(26,26,26,0.6));
	letter-spacing: 0.04em;
}

/* ── result block ── */

.gc-result {
	background: var(--portal-accent, #1a1a1a);
	color: var(--portal-accent-text, #fff);
	padding: 40px 32px;
	text-align: center;
}

.gc-r-ratio {
	font-size: 11px;
	letter-spacing: 0.1em;
	opacity: 0.5;
	margin-bottom: 20px;
}

.gc-r-eye {
	font-size: 9px;
	font-weight: 700;
	letter-spacing: 0.35em;
	text-transform: uppercase;
	opacity: 0.5;
	margin-bottom: 12px;
}

.gc-r-num {
	font-size: clamp(30px, 7vw, 44px);
	font-weight: 700;
	letter-spacing: 0.04em;
	line-height: 1.2;
	font-variant-numeric: tabular-nums;
}

.gc-r-unit {
	font-size: 12px;
	font-weight: 600;
	letter-spacing: 0.2em;
	opacity: 0.5;
	margin-top: 4px;
	margin-bottom: 20px;
}

.gc-r-chars {
	font-size: 12px;
	letter-spacing: 0.04em;
	opacity: 0.5;
	font-variant-numeric: tabular-nums;
}

/* ── reverse ── */

.gc-rev-desc {
	font-size: 0.875em;
	color: var(--portal-muted, rgba(26,26,26,0.6));
	margin-bottom: 16px;
	line-height: 1.7;
}

.gc-rev-out {
	margin-top: 16px;
	font-size: 14px;
	font-variant-numeric: tabular-nums;
	line-height: 1.6;
}

.gc-rev-out .gc-big {
	font-size: 1.375em;
	font-weight: 700;
}

.gc-rev-status {
	margin-top: 8px;
	font-size: 0.8125em;
	font-weight: 600;
	letter-spacing: 0.06em;
}

.gc-rev-status.gc-ok {
	color: #3a7a52;
}

.gc-rev-status.gc-ng {
	color: #a04040;
}

/* ── explainer ── */

.gc-explain {
	border-top: 1px solid var(--portal-border, #e0e0e0);
	padding-top: 28px;
}

.gc-explain summary {
	font-size: 0.8125em;
	font-weight: 600;
	letter-spacing: 0.08em;
	color: var(--portal-muted, rgba(26,26,26,0.6));
	cursor: pointer;
	list-style: none;
	display: flex;
	align-items: center;
	gap: 6px;
}

.gc-explain summary::-webkit-details-marker {
	display: none;
}

.gc-explain summary::before {
	content: "＋";
	font-size: 12px;
}

.gc-explain[open] summary::before {
	content: "−";
}

.gc-explain-body {
	margin-top: 16px;
	font-size: 0.875em;
	line-height: 2;
	color: var(--portal-muted, rgba(26,26,26,0.6));
}

.gc-explain-body p + p {
	margin-top: 12px;
}

/* ── responsive ── */

@media (max-width: 480px) {
	.genkou-calc input[type="number"] {
		width: 56px;
		height: 36px;
		font-size: 15px;
	}

	.gc-result {
		padding: 32px 20px;
	}
}