/* =========================================================
   Friction Calculator — Teal / Navy theme
   (shares the same design tokens as the other calculator plugins
   in this family for a consistent look)
   ========================================================= */
.frc-widget {
	--frc-bg:            #0A1930;
	--frc-panel:         #0F2440;
	--frc-panel-raised:  #12294A;
	--frc-border:        #1E3A5C;
	--frc-border-soft:   #16324F;
	--frc-teal:          #2DD4BF;
	--frc-teal-dim:      #1B8F82;
	--frc-teal-soft:     rgba(45, 212, 191, 0.12);
	--frc-navy-accent:   #3B6EA5;
	--frc-text:          #E7F1F6;
	--frc-text-muted:    #7E97B2;
	--frc-text-faint:    #5A7290;
	--frc-error:         #FF7A7A;
	--frc-amber:         #FF8F70;
	--frc-blue:          #8FD6FF;
	--frc-green:         #6EE7A8;
	--frc-radius:        10px;
	--frc-font-display:  'Space Grotesk', 'Segoe UI', sans-serif;
	--frc-font-mono:     'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

	box-sizing: border-box;
	max-width: 560px;
	margin: 2rem auto;
	background: linear-gradient(180deg, var(--frc-panel) 0%, var(--frc-bg) 100%);
	border: 1px solid var(--frc-border);
	border-radius: 16px;
	padding: 0 0 1.75rem;
	color: var(--frc-text);
	font-family: var(--frc-font-display);
	box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
	overflow: hidden;
}

.frc-widget *,
.frc-widget *::before,
.frc-widget *::after {
	box-sizing: border-box;
}

/* ---------- Header ---------- */
.frc-header {
	display: flex;
	align-items: center;
	gap: 0.65rem;
	padding: 1.15rem 1.5rem;
	background: linear-gradient(90deg, #123653 0%, #0E2846 100%);
	border-bottom: 1px solid var(--frc-border);
}

.frc-header__icon {
	display: inline-flex;
	color: var(--frc-teal);
	filter: drop-shadow(0 0 6px rgba(45, 212, 191, 0.45));
}

.frc-header__title {
	margin: 0;
	font-size: 1.1rem;
	font-weight: 700;
	letter-spacing: 0.01em;
	color: var(--frc-text);
}

/* ---------- Grid layout ---------- */
.frc-grid {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 1.1rem 1.25rem;
	padding: 1.5rem 1.5rem 0;
}

.frc-field--full {
	grid-column: 1 / -1;
}

.frc-label {
	display: block;
	font-size: 0.72rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.08em;
	color: var(--frc-text-muted);
	margin-bottom: 0.4rem;
}

/* ---------- Inputs ---------- */
.frc-input {
	width: 100%;
	font-family: var(--frc-font-mono);
	font-size: 1.4rem;
	font-weight: 600;
	border-radius: var(--frc-radius);
	padding: 0.65rem 0.85rem;
	line-height: 1.3;
	background: var(--frc-panel-raised);
	border: 1px solid var(--frc-border);
	color: var(--frc-teal);
	appearance: none;
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.frc-input::placeholder {
	color: var(--frc-text-faint);
	font-weight: 400;
}

.frc-input:hover {
	border-color: var(--frc-navy-accent);
}

.frc-input:focus {
	outline: none;
	border-color: var(--frc-teal);
	box-shadow: 0 0 0 3px var(--frc-teal-soft);
}

.frc-input.frc-input--invalid {
	border-color: var(--frc-error);
	box-shadow: 0 0 0 3px rgba(255, 122, 122, 0.14);
}

/* ---------- Pill radio group ---------- */
.frc-pill-row {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
}

.frc-pill {
	position: relative;
	flex: 1;
	min-width: fit-content;
}

.frc-pill input {
	position: absolute;
	opacity: 0;
	inset: 0;
	margin: 0;
	cursor: pointer;
}

.frc-pill span {
	display: flex;
	align-items: center;
	justify-content: center;
	height: 2.4rem;
	padding: 0 0.75rem;
	border-radius: var(--frc-radius);
	background: var(--frc-panel-raised);
	border: 1px solid var(--frc-border);
	color: var(--frc-text-muted);
	font-weight: 600;
	font-size: 0.85rem;
	white-space: nowrap;
	transition: all 0.15s ease;
}

.frc-pill input:hover + span {
	border-color: var(--frc-navy-accent);
	color: var(--frc-text);
}

.frc-pill input:checked + span {
	background: linear-gradient(135deg, var(--frc-teal-dim), var(--frc-teal));
	border-color: var(--frc-teal);
	color: #06201C;
	box-shadow: 0 0 0 3px var(--frc-teal-soft);
}

/* ---------- Error message ---------- */
.frc-error {
	grid-column: 1 / -1;
	display: none;
	font-size: 0.82rem;
	color: var(--frc-error);
	background: rgba(255, 122, 122, 0.08);
	border: 1px solid rgba(255, 122, 122, 0.35);
	border-radius: var(--frc-radius);
	padding: 0.6rem 0.85rem;
}

.frc-error.is-visible {
	display: block;
}

/* ---------- Results ---------- */
.frc-results {
	grid-column: 1 / -1;
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 0.9rem;
	margin-top: 0.4rem;
	padding-top: 1.4rem;
	border-top: 1px dashed var(--frc-border);
}

.frc-result-card {
	background: var(--frc-bg);
	border: 1px solid var(--frc-border-soft);
	border-radius: var(--frc-radius);
	padding: 0.75rem 0.9rem;
	display: flex;
	flex-direction: column;
	gap: 0.3rem;
}

.frc-result-card--full {
	grid-column: 1 / -1;
}

.frc-result-card--primary {
	background: linear-gradient(135deg, rgba(45, 212, 191, 0.1), rgba(59, 110, 165, 0.1));
	border: 1px solid var(--frc-teal);
	box-shadow: 0 0 0 3px var(--frc-teal-soft);
	padding: 1rem 1.1rem;
}

.frc-result-label {
	font-size: 0.68rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.07em;
	color: var(--frc-text-muted);
}

.frc-result-label-primary {
	color: var(--frc-teal);
}

.frc-result-value {
	font-family: var(--frc-font-mono);
	font-size: 1.2rem;
	font-weight: 600;
	color: var(--frc-teal);
}

.frc-result-primary {
	font-size: 1.9rem;
	color: var(--frc-text);
}

.frc-result-normal { color: var(--frc-blue); }
.frc-result-repose { color: var(--frc-blue); }
.frc-result-slides { color: var(--frc-amber); font-size: 1.1rem; }
.frc-result-moves { color: var(--frc-green); font-size: 1.05rem; }

/* ---------- Responsive ---------- */
@media (max-width: 520px) {
	.frc-grid {
		grid-template-columns: 1fr;
		padding: 1.25rem 1.1rem 0;
	}

	.frc-results {
		grid-template-columns: 1fr;
	}

	.frc-header {
		padding: 1rem 1.1rem;
	}

	.frc-widget {
		margin: 1rem auto;
		border-radius: 12px;
	}
}