/**
 * FST Solar BaZi Calculator
 *
 * Jade-and-gold FST house palette; the five elements carry their own
 * colours so a chart can be read at a glance the way a printed pai pan is.
 */

.fst-sb {
	--sb-jade: #14594c;
	--sb-jade-deep: #0b332b;
	--sb-jade-mist: #e8f0ed;
	--sb-gold: #c19a3c;
	--sb-gold-light: #e3c66f;
	--sb-paper: #faf8f2;
	--sb-ink: #1e2422;
	--sb-muted: #6c7a75;
	--sb-rule: #ddd8ca;
	--sb-now: #d33;

	--sb-wood: #2e7d4f;
	--sb-fire: #b13a2c;
	--sb-earth: #9a7328;
	--sb-metal: #6f7a85;
	--sb-water: #1d4e77;

	--sb-serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
	--sb-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	--sb-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
	--sb-han: "Noto Serif TC", "Songti TC", "Songti SC", "PingFang TC", "Microsoft JhengHei", "Noto Serif CJK TC", serif;

	max-width: 68rem;
	margin: 0 auto;
	color: var(--sb-ink);
	font-family: var(--sb-sans);
	font-size: 16px;
	line-height: 1.55;
}

.fst-sb *,
.fst-sb *::before,
.fst-sb *::after {
	box-sizing: border-box;
}

/* ---------------------------------------------------------------- masthead */

.fst-sb__masthead {
	display: flex;
	gap: 1.4rem;
	align-items: center;
	flex-wrap: wrap;
	border-bottom: 2px solid var(--sb-jade);
	padding-bottom: 0.8rem;
	margin-bottom: 1.5rem;
}

.fst-sb__logo {
	width: 240px;
	max-width: 58vw;
	height: auto;
	display: block;
}

.fst-sb__masthead-text { flex: 1 1 240px; }

@media ( max-width: 640px ) {
	.fst-sb__logo { width: 190px; }
}

@media print {
	.fst-sb__logo { width: 170px; }
}

.fst-sb__title {
	font-family: var(--sb-serif);
	font-size: clamp(1.5rem, 3.4vw, 2.1rem);
	font-weight: 600;
	letter-spacing: 0.01em;
	color: var(--sb-jade-deep);
	margin: 0;
}

.fst-sb__subtitle {
	margin: 0.15rem 0 0;
	font-size: 0.86rem;
	letter-spacing: 0.09em;
	text-transform: uppercase;
	color: var(--sb-muted);
}

/* -------------------------------------------------------------------- form */

.fst-sb__form {
	background: var(--sb-paper);
	border: 1px solid var(--sb-rule);
	border-top: 3px solid var(--sb-gold);
	padding: 1.25rem;
}

.fst-sb__row {
	display: flex;
	flex-wrap: wrap;
	gap: 1rem;
	margin-bottom: 1rem;
}

.fst-sb__row:last-child {
	margin-bottom: 0;
}

.fst-sb__field {
	flex: 1 1 14rem;
	min-width: 0;
	border: 0;
	margin: 0;
	padding: 0;
}

.fst-sb__field--wide {
	flex: 2 1 22rem;
}

.fst-sb__label {
	display: block;
	font-size: 0.72rem;
	font-weight: 600;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--sb-muted);
	margin-bottom: 0.3rem;
	padding: 0;
}

.fst-sb input[type="text"],
.fst-sb input[type="date"],
.fst-sb input[type="number"],
.fst-sb select {
	width: 100%;
	padding: 0.5rem 0.6rem;
	font: inherit;
	font-size: 0.95rem;
	color: var(--sb-ink);
	background: #fff;
	border: 1px solid var(--sb-rule);
	border-radius: 2px;
}

.fst-sb input:focus-visible,
.fst-sb select:focus-visible,
.fst-sb button:focus-visible,
.fst-sb summary:focus-visible {
	outline: 2px solid var(--sb-jade);
	outline-offset: 2px;
}

.fst-sb__time {
	display: flex;
	align-items: center;
	gap: 0.4rem;
	flex-wrap: wrap;
}

.fst-sb__time select {
	width: auto;
	min-width: 4.2rem;
	font-family: var(--sb-mono);
}

.fst-sb__colon {
	color: var(--sb-muted);
}

.fst-sb__chips {
	display: flex;
	gap: 0.35rem;
	margin-left: 0.35rem;
}

.fst-sb__chip {
	font: inherit;
	font-size: 0.75rem;
	padding: 0.3rem 0.6rem;
	background: transparent;
	border: 1px solid var(--sb-rule);
	border-radius: 999px;
	color: var(--sb-muted);
	cursor: pointer;
}

.fst-sb__chip:hover {
	border-color: var(--sb-jade);
	color: var(--sb-jade);
}

.fst-sb__chip[aria-pressed="true"] {
	background: var(--sb-jade);
	border-color: var(--sb-jade);
	color: #fff;
}

.fst-sb__radios,
.fst-sb__row--checks {
	display: flex;
	gap: 1.1rem;
	align-items: center;
	flex-wrap: wrap;
}

.fst-sb__radios label,
.fst-sb__check {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	font-size: 0.92rem;
	cursor: pointer;
}

.fst-sb__advanced {
	margin: 1rem 0;
	border-top: 1px solid var(--sb-rule);
	padding-top: 0.85rem;
}

.fst-sb__advanced summary {
	cursor: pointer;
	font-size: 0.8rem;
	font-weight: 600;
	letter-spacing: 0.07em;
	text-transform: uppercase;
	color: var(--sb-jade);
	margin-bottom: 0.85rem;
}

.fst-sb__hint {
	font-size: 0.82rem;
	color: var(--sb-muted);
	margin: 0.5rem 0 0;
}

.fst-sb__actions {
	display: flex;
	gap: 0.6rem;
	align-items: center;
	margin-top: 1.1rem;
	border-top: 1px solid var(--sb-rule);
	padding-top: 1.1rem;
}

.fst-sb__submit {
	font: inherit;
	font-weight: 600;
	letter-spacing: 0.04em;
	padding: 0.6rem 1.4rem;
	background: var(--sb-jade);
	color: #fff;
	border: 1px solid var(--sb-jade);
	border-radius: 2px;
	cursor: pointer;
}

.fst-sb__submit:hover {
	background: var(--sb-jade-deep);
}

.fst-sb__submit[disabled] {
	opacity: 0.55;
	cursor: progress;
}

.fst-sb__reset {
	font: inherit;
	font-size: 0.88rem;
	padding: 0.6rem 0.9rem;
	background: transparent;
	border: 1px solid transparent;
	color: var(--sb-muted);
	cursor: pointer;
}

.fst-sb__reset:hover {
	color: var(--sb-jade);
	text-decoration: underline;
}

/* ------------------------------------------------------------------ status */

.fst-sb__status {
	margin: 1rem 0 0;
	font-size: 0.9rem;
	color: var(--sb-muted);
}

.fst-sb__status--error {
	color: var(--sb-fire);
	font-weight: 600;
}

/* ----------------------------------------------------------------- results */

.fst-sb__results {
	margin-top: 1.75rem;
}

.fst-sb__panel {
	background: var(--sb-paper);
	border: 1px solid var(--sb-rule);
	padding: 1.25rem;
	margin-bottom: 1.25rem;
}

.fst-sb__panel-head {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	gap: 1rem;
	border-bottom: 1px solid var(--sb-gold);
	padding-bottom: 0.45rem;
	margin-bottom: 1rem;
}

.fst-sb__panel-title {
	font-family: var(--sb-serif);
	font-size: 1.02rem;
	font-weight: 600;
	color: var(--sb-jade-deep);
	margin: 0;
}

.fst-sb__panel-note {
	font-size: 0.78rem;
	color: var(--sb-muted);
	font-family: var(--sb-mono);
}

/* --------------------------------------------- signature: solar term ruler */

/* ------------------------------------------------------------ pillar table */

.fst-sb__pillars {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
	gap: 0.75rem;
}

.fst-sb__pillar {
	border: 1px solid var(--sb-rule);
	background: #fff;
	display: flex;
	flex-direction: column;
}

.fst-sb__pillar--day {
	border-color: var(--sb-jade);
	box-shadow: inset 0 0 0 1px var(--sb-jade-mist);
}

.fst-sb__pillar-head {
	font-size: 0.68rem;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	text-align: center;
	padding: 0.4rem;
	color: var(--sb-muted);
	border-bottom: 1px solid var(--sb-rule);
}

.fst-sb__pillar--day .fst-sb__pillar-head {
	background: var(--sb-jade);
	color: #fff;
	border-bottom-color: var(--sb-jade);
}

.fst-sb__glyph {
	text-align: center;
	padding: 0.65rem 0.4rem 0.5rem;
}

.fst-sb__glyph--branch {
	border-top: 1px dashed var(--sb-rule);
}

.fst-sb__han {
	display: block;
	font-family: var(--sb-han);
	font-size: 2.55rem;
	line-height: 1.05;
	font-weight: 600;
}

/*
 * Polarity and element under the stem, animal under the branch — the same
 * captions the printed sheet carries.
 */
.fst-sb__cap {
	display: block;
	font-size: 0.74rem;
	line-height: 1.35;
	color: var(--sb-muted);
	margin-top: 0.1rem;
}

.fst-sb__py {
	display: block;
	font-size: 0.78rem;
	letter-spacing: 0.05em;
	color: var(--sb-muted);
}

.fst-sb__god {
	display: block;
	font-size: 0.72rem;
	margin-top: 0.2rem;
	color: var(--sb-jade);
}

.fst-sb__hidden {
	border-top: 1px solid var(--sb-rule);
	padding: 0.5rem 0.55rem 0.6rem;
	background: rgba(232, 240, 237, 0.45);
}

.fst-sb__hidden-title {
	font-size: 0.62rem;
	letter-spacing: 0.11em;
	text-transform: uppercase;
	color: var(--sb-muted);
	margin-bottom: 0.3rem;
}

.fst-sb__hidden-row {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	gap: 0.4rem;
	font-size: 0.76rem;
	padding: 0.1rem 0;
}

.fst-sb__hidden-row--primary {
	font-weight: 600;
}

.fst-sb__hidden-row .fst-sb__hidden-god {
	color: var(--sb-muted);
	font-size: 0.7rem;
}

.fst-sb__pillar-foot {
	margin-top: auto;
	border-top: 1px solid var(--sb-rule);
	padding: 0.45rem 0.55rem;
	font-size: 0.72rem;
	color: var(--sb-muted);
}

.fst-sb__pillar-foot dl {
	margin: 0;
	display: grid;
	grid-template-columns: auto 1fr;
	gap: 0.1rem 0.5rem;
}

.fst-sb__pillar-foot dt {
	font-size: 0.62rem;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	opacity: 0.75;
}

.fst-sb__pillar-foot dd {
	margin: 0;
	text-align: right;
}

/* element colouring */

.fst-el-wood { color: var(--sb-wood); }
.fst-el-fire { color: var(--sb-fire); }
.fst-el-earth { color: var(--sb-earth); }
.fst-el-metal { color: var(--sb-metal); }
.fst-el-water { color: var(--sb-water); }

.fst-bg-wood { background: var(--sb-wood); }
.fst-bg-fire { background: var(--sb-fire); }
.fst-bg-earth { background: var(--sb-earth); }
.fst-bg-metal { background: var(--sb-metal); }
.fst-bg-water { background: var(--sb-water); }

/* -------------------------------------------------------- element balance */

.fst-sb__balance {
	display: grid;
	gap: 0.45rem;
}

.fst-sb__bar-row {
	display: grid;
	grid-template-columns: 4.6rem 1fr 4.2rem;
	align-items: center;
	gap: 0.6rem;
	font-size: 0.85rem;
}

.fst-sb__bar-track {
	height: 0.65rem;
	background: var(--sb-jade-mist);
}

.fst-sb__bar-fill {
	height: 100%;
	min-width: 2px;
}

.fst-sb__bar-value {
	font-family: var(--sb-mono);
	font-size: 0.78rem;
	text-align: right;
	color: var(--sb-muted);
}

/* ------------------------------------------------------------------ tables */

.fst-sb__scroll {
	overflow-x: auto;
	-webkit-overflow-scrolling: touch;
}

.fst-sb table {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.86rem;
}

.fst-sb th,
.fst-sb td {
	padding: 0.4rem 0.55rem;
	text-align: left;
	border-bottom: 1px solid var(--sb-rule);
	white-space: nowrap;
}

.fst-sb th {
	font-size: 0.66rem;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--sb-muted);
	font-weight: 600;
	border-bottom-color: var(--sb-gold);
}

.fst-sb tbody tr:hover {
	background: var(--sb-jade-mist);
}

.fst-sb td .fst-sb__han-inline {
	font-family: var(--sb-han);
	font-size: 1.15rem;
	font-weight: 600;
}

.fst-sb__current-row {
	background: rgba(193, 154, 60, 0.14);
}

/* ------------------------------------------------ horizontal pillar bands */

/*
 * Luck and annual pillars read left to right, the way a printed pai pan
 * does, and scroll sideways. The label column is sticky so the row names
 * stay put while the pillars pass under them.
 */

.fst-sb__hscroll {
	overflow-x: auto;
	overflow-y: hidden;
	-webkit-overflow-scrolling: touch;
	overscroll-behavior-x: contain;
	scroll-snap-type: x proximity;
	scroll-padding-left: 7.5rem;
	padding-bottom: 0.4rem;
	scrollbar-width: thin;
	scrollbar-color: var(--sb-gold) var(--sb-jade-mist);
}

.fst-sb__hscroll:focus-visible {
	outline: 2px solid var(--sb-gold);
	outline-offset: 3px;
}

.fst-sb__hscroll::-webkit-scrollbar {
	height: 8px;
}

.fst-sb__hscroll::-webkit-scrollbar-track {
	background: var(--sb-jade-mist);
}

.fst-sb__hscroll::-webkit-scrollbar-thumb {
	background: var(--sb-gold);
	border-radius: 4px;
}

.fst-sb table.fst-sb__hband {
	width: max-content;
	min-width: 100%;
	/* separate, not collapse: collapsed borders drop out of sticky cells */
	border-collapse: separate;
	border-spacing: 0;
}

.fst-sb__hband th.fst-sb__hlabel {
	position: sticky;
	left: 0;
	z-index: 2;
	width: 7.5rem;
	min-width: 7.5rem;
	background: var(--sb-paper);
	text-align: left;
	white-space: nowrap;
	border-right: 1px solid var(--sb-gold);
	border-bottom: 1px solid var(--sb-rule);
}

.fst-sb__hband td.fst-sb__hcol {
	min-width: 5.75rem;
	scroll-snap-align: start;
	text-align: center;
	vertical-align: middle;
	white-space: nowrap;
	border-bottom: 1px solid var(--sb-rule);
}

.fst-sb__hband tr:last-child th.fst-sb__hlabel,
.fst-sb__hband tr:last-child td.fst-sb__hcol {
	border-bottom: 0;
}

/* Gold tint marks the pillar or year in force. */
.fst-sb__hcol--current {
	background: rgba(193, 154, 60, 0.14);
}

/*
 * Red marks where the client actually stands today: the current year in the
 * annual band, and the five-year half of the luck pillar in the lifecycle
 * band. Drawn as edges rather than an outline per cell so the column reads
 * as one box, matching the printed sheet.
 */
.fst-sb__hband td.fst-sb__hcol--now {
	border-left: 2px solid var(--sb-now);
	border-right: 2px solid var(--sb-now);
}

.fst-sb__hband tr:first-child td.fst-sb__hcol--now {
	border-top: 2px solid var(--sb-now);
}

.fst-sb__hband tr:last-child td.fst-sb__hcol--now {
	border-bottom: 2px solid var(--sb-now);
}

.fst-sb__hband td.fst-sb__hcell--now {
	outline: 2px solid var(--sb-now);
	outline-offset: -2px;
}

.fst-sb__hage {
	display: block;
	font-size: 0.68rem;
	color: var(--sb-muted);
	margin-bottom: 0.1rem;
}

.fst-sb__hhan {
	display: block;
	font-family: var(--sb-han);
	font-size: 1.3rem;
	font-weight: 600;
	line-height: 1.25;
}

.fst-sb__hsub {
	display: block;
	font-size: 0.66rem;
	letter-spacing: 0.06em;
	color: var(--sb-muted);
}

@media print {
	.fst-sb__hscroll {
		overflow: visible;
	}

	.fst-sb table.fst-sb__hband {
		width: 100%;
	}

	.fst-sb__hband th.fst-sb__hlabel {
		position: static;
	}
}

/* ------------------------------------------------------------------ facts */

.fst-sb__facts {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
	gap: 0.85rem 1.4rem;
	margin: 0;
}

.fst-sb__fact dt {
	font-size: 0.66rem;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--sb-muted);
}

.fst-sb__fact dd {
	margin: 0.1rem 0 0;
	font-size: 0.95rem;
}

.fst-sb__fact dd.fst-sb__mono {
	font-family: var(--sb-mono);
	font-size: 0.86rem;
}

/* --------------------------------------------------------- eight mansions */

.fst-sb__mansions {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 0.5rem;
}

.fst-sb__mansion {
	border: 1px solid var(--sb-rule);
	padding: 0.5rem;
	text-align: center;
	background: #fff;
}

.fst-sb__mansion--auspicious {
	border-left: 3px solid var(--sb-jade);
}

.fst-sb__mansion--inauspicious {
	border-left: 3px solid var(--sb-fire);
}

.fst-sb__mansion-dir {
	font-family: var(--sb-mono);
	font-size: 0.78rem;
	font-weight: 700;
	letter-spacing: 0.08em;
	color: var(--sb-muted);
}

.fst-sb__mansion-code {
	display: block;
	font-family: var(--sb-serif);
	font-size: 1.02rem;
	font-weight: 600;
	color: var(--sb-jade-deep);
}

.fst-sb__mansion-star {
	display: block;
	font-size: 0.72rem;
	color: var(--sb-muted);
}

/* ------------------------------------------------------------------ stars */

.fst-sb__stars {
	display: flex;
	flex-wrap: wrap;
	gap: 0.45rem;
	list-style: none;
	margin: 0;
	padding: 0;
}

.fst-sb__star {
	border: 1px solid var(--sb-gold);
	background: #fff;
	padding: 0.3rem 0.6rem;
	font-size: 0.82rem;
}

.fst-sb__star em {
	font-style: normal;
	color: var(--sb-muted);
	font-size: 0.74rem;
	margin-left: 0.3rem;
}

/* -------------------------------------------------------------- footnotes */

.fst-sb__method {
	font-size: 0.8rem;
	color: var(--sb-muted);
	border-top: 1px solid var(--sb-rule);
	padding-top: 0.85rem;
}

.fst-sb__method p {
	margin: 0 0 0.4rem;
}

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

@media (max-width: 640px) {
	.fst-sb__pillars {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.fst-sb__mansions {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.fst-sb__han {
		font-size: 2.1rem;
	}

}

@media print {
	.fst-sb__form,
	.fst-sb__actions,
	.fst-sb__status {
		display: none;
	}

	.fst-sb__panel,
	.fst-sb__pillar {
		break-inside: avoid;
	}

}

@media (prefers-reduced-motion: reduce) {
	.fst-sb * {
		transition: none !important;
		animation: none !important;
	}
}

/* ------------------------------------------------------- calculation basis */

.fst-sb__modes {
	border: 0;
	margin: 0 0 1.1rem;
	padding: 0 0 1rem;
	border-bottom: 1px solid var(--sb-rule);
}

.fst-sb__mode-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
	gap: 0.6rem;
}

.fst-sb__mode {
	display: flex;
	align-items: flex-start;
	gap: 0.55rem;
	padding: 0.7rem 0.8rem;
	background: #fff;
	border: 1px solid var(--sb-rule);
	border-radius: 2px;
	cursor: pointer;
}

.fst-sb__mode:hover {
	border-color: var(--sb-jade);
}

.fst-sb__mode:has(input:checked) {
	border-color: var(--sb-jade);
	box-shadow: inset 0 0 0 1px var(--sb-jade);
	background: var(--sb-jade-mist);
}

.fst-sb__mode input {
	margin-top: 0.25rem;
	flex: 0 0 auto;
}

.fst-sb__mode-body {
	display: block;
	min-width: 0;
}

.fst-sb__mode-body strong {
	display: block;
	font-size: 0.95rem;
	color: var(--sb-jade-deep);
}

.fst-sb__mode-body em {
	display: block;
	font-style: normal;
	font-size: 0.78rem;
	line-height: 1.4;
	color: var(--sb-muted);
	margin-top: 0.1rem;
}

.fst-sb__pdf {
	font: inherit;
	font-size: 0.88rem;
	padding: 0.6rem 1.1rem;
	background: transparent;
	border: 1px solid var(--sb-gold);
	border-radius: 2px;
	color: var(--sb-jade-deep);
	cursor: pointer;
}

.fst-sb__pdf:hover {
	background: var(--sb-gold);
	color: #fff;
}

.fst-sb input:disabled,
.fst-sb select:disabled {
	background: #f2f0ea;
	color: var(--sb-muted);
	cursor: not-allowed;
}

.fst-sb__check input:disabled + span {
	color: var(--sb-muted);
	opacity: 0.6;
}

/* --------------------------------------------------------- place of birth */

.fst-sb__place {
	position: relative;
}

.fst-sb__suggest {
	position: absolute;
	z-index: 30;
	left: 0;
	right: 0;
	top: 100%;
	margin: 2px 0 0;
	padding: 0;
	list-style: none;
	background: #fff;
	border: 1px solid var(--sb-jade);
	max-height: 17rem;
	overflow-y: auto;
	box-shadow: 0 6px 18px rgba(11, 51, 43, 0.13);
}

.fst-sb__suggest-item {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	gap: 0.75rem;
	padding: 0.45rem 0.65rem;
	font-size: 0.88rem;
	cursor: pointer;
	border-bottom: 1px solid var(--sb-jade-mist);
}

.fst-sb__suggest-item:last-child {
	border-bottom: 0;
}

.fst-sb__suggest-item.is-active {
	background: var(--sb-jade-mist);
}

.fst-sb__suggest-name {
	min-width: 0;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.fst-sb__suggest-zone {
	flex: 0 0 auto;
	font-family: var(--sb-mono);
	font-size: 0.74rem;
	color: var(--sb-muted);
}

.fst-sb__resolved {
	margin: 0.35rem 0 0;
	font-family: var(--sb-mono);
	font-size: 0.78rem;
	color: var(--sb-jade);
}

.fst-sb__suggest-empty {
	padding: 0.55rem 0.65rem;
	font-size: 0.82rem;
	line-height: 1.45;
	color: var(--sb-muted);
}