/* ==========================================================
   WS Finance. Calculator suite. Use: [ws_finance]
   Master-detail. Sidebar picks calc, panel computes live.
   Brand tokens from main.css. Own namespace only.
   Group headings use shared .ws-pill (main.css).
   ========================================================== */

.wsfinance {
	/* Data font. No shared mono token. */
	--wsfinance-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
	--wsfinance-nav-w: 264px;

	border: 1px solid var(--ws-border);
	border-radius: var(--ws-radius);
	background: var(--ws-surface);
	overflow: hidden;
	font-family: var(--ws-font);
	color: var(--ws-text);
}

.wsfinance__layout { display: grid; grid-template-columns: var(--wsfinance-nav-w) 1fr; }

/* === Sidebar. Desktop tool picker. === */
/* Fixed height forces scroll. Scrollbar always shown. */
/* Scroll shadows cue more items. JS-free. Local trick. */
.wsfinance__nav {
	--wsfinance-shadow: rgba(0,0,0,.14);
	border-right: 1px solid var(--ws-border);
	padding: 14px 8px;
	height: 560px;
	overflow-y: scroll;
	scrollbar-width: thin;
	scrollbar-color: var(--ws-grey) transparent;
	background:
		linear-gradient(var(--ws-bg) 30%, transparent) top / 100% 34px no-repeat local,
		linear-gradient(transparent, var(--ws-bg) 70%) bottom / 100% 34px no-repeat local,
		radial-gradient(farthest-side at 50% 0, var(--wsfinance-shadow), transparent) top / 100% 12px no-repeat scroll,
		radial-gradient(farthest-side at 50% 100%, var(--wsfinance-shadow), transparent) bottom / 100% 12px no-repeat scroll,
		var(--ws-bg);
}
/* Dark. Shadow reads on dark bg. */
[data-theme="dark"] .wsfinance__nav { --wsfinance-shadow: rgba(0,0,0,.55); }
.wsfinance__nav::-webkit-scrollbar { width: 10px; }
.wsfinance__nav::-webkit-scrollbar-track { background: var(--ws-border); border-radius: var(--ws-radius-pill); }
.wsfinance__nav::-webkit-scrollbar-thumb { background: var(--ws-grey); border-radius: var(--ws-radius-pill); border: 2px solid var(--ws-bg); }
.wsfinance__nav::-webkit-scrollbar-thumb:hover { background: var(--ws-dark-grey); }

.wsfinance__nav-group { margin-bottom: 16px; }
.wsfinance__nav-group:last-child { margin-bottom: 0; }
/* Heading = spacing wrapper. Look on .ws-pill (main.css). */
.wsfinance__nav-heading { padding: 4px 10px 10px; }

/* Tool item. Uppercase. Lime underline active. */
.wsfinance__nav-item {
	position: relative;
	display: block; width: 100%; text-align: left;
	font-family: var(--ws-font); font-size: .78rem; font-weight: 700;
	letter-spacing: .08em; text-transform: uppercase; color: var(--ws-muted);
	padding: 10px 10px; border-radius: var(--ws-radius); border: 1px solid transparent;
	background: transparent; cursor: pointer; margin-bottom: 2px;
	transition: color .15s var(--ws-ease), transform .15s var(--ws-ease);
}
.wsfinance__nav-item::after {
	content: ""; position: absolute; left: 10px; right: 10px; bottom: 5px;
	height: 2px; background: var(--ws-accent);
	transform: scaleX(0); transform-origin: left center;
	transition: transform .28s var(--ws-ease);
}
/* Hover. Darken and lift. No hover underline. */
.wsfinance__nav-item:hover { color: var(--ws-heading); transform: translateY(-1px); }
.wsfinance__nav-item.is-active { color: var(--ws-heading); }
.wsfinance__nav-item.is-active::after { transform: scaleX(1); }
.wsfinance__nav-item:focus-visible { outline: 2px solid var(--ws-accent); outline-offset: 1px; }
@media (prefers-reduced-motion: reduce) {
	.wsfinance__nav-item { transition: none; }
	.wsfinance__nav-item::after { transition: none; }
}

/* === Mobile selector. Search-filtered dropdown. === */
.wsfinance__mobile { display: none; padding: 12px 12px 0; }
.wsfinance__combo { position: relative; }
.wsfinance__combo-input {
	width: 100%; font-family: var(--ws-font); font-size: 1rem; font-weight: 700;
	padding: 13px 40px; border-radius: var(--ws-radius);
	border: 1px solid var(--ws-border); background: var(--ws-bg); color: var(--ws-text);
}
.wsfinance__combo-input:focus-visible { outline: 2px solid var(--ws-accent); outline-offset: 1px; }
.wsfinance__combo-icon { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); pointer-events: none; color: var(--ws-muted); }

/* Caret signals dropdown. Flips up open. */
.wsfinance__combo-caret { position: absolute; right: 13px; top: 50%; transform: translateY(-50%); pointer-events: none; color: var(--ws-muted); transition: transform .2s var(--ws-ease); }
.wsfinance__combo-input[aria-expanded="true"] ~ .wsfinance__combo-caret { transform: translateY(-50%) rotate(180deg); }

.wsfinance__combo-list {
	position: absolute; z-index: 20; left: 0; right: 0; top: calc(100% + 6px);
	background: var(--ws-bg); border: 1px solid var(--ws-border); border-radius: var(--ws-radius);
	box-shadow: 0 12px 30px rgba(0,0,0,.14); max-height: 320px; overflow-y: scroll; display: none;
	scrollbar-width: thin; scrollbar-color: var(--ws-grey) transparent;
}
.wsfinance__combo-list::-webkit-scrollbar { width: 10px; }
.wsfinance__combo-list::-webkit-scrollbar-track { background: var(--ws-border); border-radius: var(--ws-radius-pill); }
.wsfinance__combo-list::-webkit-scrollbar-thumb { background: var(--ws-grey); border-radius: var(--ws-radius-pill); border: 2px solid var(--ws-bg); }
.wsfinance__combo-list.is-open { display: block; }
.wsfinance__combo-group-label { font-size: .66rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--ws-muted); padding: 10px 14px 6px; }
.wsfinance__combo-option { display: block; width: 100%; text-align: left; font-family: var(--ws-font); font-size: .95rem; font-weight: 600; color: var(--ws-text); padding: 11px 14px; border: none; background: transparent; cursor: pointer; }
.wsfinance__combo-option:hover { background: var(--ws-surface); }
.wsfinance__combo-option mark { background: var(--ws-accent); color: var(--ws-charcoal); border-radius: var(--ws-radius-sm); padding: 0 2px; }
.wsfinance__combo-empty { padding: 16px 14px; color: var(--ws-muted); font-size: .9rem; }

/* === Panel. Holds the active calculator. === */
.wsfinance__panel { padding: 22px 22px 24px; min-height: 560px; position: relative; }
.wsfinance__calc-name { font-size: 1.3rem; font-weight: 800; margin: 0 0 4px; letter-spacing: -.01em; color: var(--ws-heading); }
.wsfinance__calc-desc { color: var(--ws-muted); font-size: .92rem; margin: 0 0 16px; max-width: 56ch; }

/* Formula. Boxed band. Typeset math. Always visible. */
.wsfinance__formula { border-top: 1px solid var(--ws-border); border-bottom: 1px solid var(--ws-border); padding: 14px 0; margin: 0 0 20px; }
.wsfinance__formula-label { font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--ws-muted); margin-bottom: 10px; }
.wsfinance .math { font-family: 'Cambria Math', Georgia, 'Times New Roman', serif; font-size: 1.15rem; line-height: 1.4; display: flex; align-items: center; flex-wrap: wrap; gap: 8px; color: var(--ws-text); }
/* Dark. Brighten formula to white. Ops stay quiet. */
[data-theme="dark"] .wsfinance .math { color: var(--ws-white); }
[data-theme="dark"] .wsfinance .math .op { color: var(--ws-grey); }
.wsfinance .math var { font-style: italic; }
.wsfinance .frac { display: inline-flex; flex-direction: column; text-align: center; vertical-align: middle; }
.wsfinance .frac > .num { border-bottom: 1.5px solid currentColor; padding: 0 8px 3px; }
.wsfinance .frac > .den { padding: 3px 8px 0; }
.wsfinance .math .op { padding: 0 2px; color: var(--ws-muted); }
.wsfinance .math .times { padding: 0 2px; }

/* Inputs. Reshaped per calc. Mono figures. Affix inside. */
.wsfinance__fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; }
.wsfinance__field { display: flex; flex-direction: column; gap: 6px; }
.wsfinance__label { font-size: .82rem; font-weight: 700; }
.wsfinance__input-wrap { position: relative; display: flex; align-items: center; }
.wsfinance__affix { position: absolute; font-size: .9rem; font-weight: 700; color: var(--ws-muted); pointer-events: none; }
.wsfinance__affix--pre { left: 12px; }
.wsfinance__affix--post { right: 12px; }
.wsfinance__input { width: 100%; font-family: var(--wsfinance-mono); font-size: .95rem; padding: 11px 12px; border-radius: var(--ws-radius); border: 1px solid var(--ws-border); background: var(--ws-bg); color: var(--ws-text); }
.wsfinance__input.has-pre { padding-left: 26px; }
.wsfinance__input.has-post { padding-right: 40px; }
.wsfinance__input:focus-visible { outline: 2px solid var(--ws-accent); outline-offset: 1px; }

/* === Result. Hairline over. Heading hierarchy. === */
/* Primary uses h5 scale. Secondary body text. */
.wsfinance__result { margin-top: 22px; padding-top: 18px; border: 0; border-top: 1px solid var(--ws-border); border-radius: 0; background: transparent; display: flex; flex-wrap: wrap; gap: 26px 48px; align-items: baseline; }
.wsfinance__result-item { display: flex; flex-direction: column; gap: 6px; }
.wsfinance__result-label { font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--ws-muted); }
.wsfinance__result-value { font-family: var(--ws-font); font-size: var(--ws-fs-h5); font-weight: 700; color: var(--ws-text); }
.wsfinance__result-value.is-primary { color: var(--ws-heading); }

/* Spinner. Short beat on swap. Polish, not real wait. */
.wsfinance__spinner { position: absolute; inset: 0; display: none; align-items: center; justify-content: center; background: var(--ws-surface); z-index: 5; }
.wsfinance__spinner.is-on { display: flex; }
.wsfinance__spinner-dot { width: 34px; height: 34px; border-radius: 50%; border: 3px solid var(--ws-border); border-top-color: var(--ws-accent); animation: wsfinance-spin .7s linear infinite; }
@keyframes wsfinance-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .wsfinance__spinner-dot { animation-duration: 2s; } }

/* === Responsive. Collapse sidebar to mobile combo. === */
@media (max-width: 720px) {
	.wsfinance__layout { grid-template-columns: 1fr; }
	.wsfinance__nav { display: none; }
	.wsfinance__mobile { display: block; }
	.wsfinance__panel { min-height: 0; }
}