/* Ring Bangle Sizer tool – mobile first */

.rbs {
	--rbs-blue: #1d4ed8;
	--rbs-blue-dark: #1e40af;
	--rbs-border: #e5e7eb;
	--rbs-bg: #f9fafb;
	--rbs-text: #111827;
	--rbs-muted: #6b7280;
	max-width: 720px;
	margin: 0 auto 32px;
	color: var(--rbs-text);
	font-size: 16px;
	line-height: 1.5;
	min-height: 520px; /* reserve space: avoids CLS while JS loads */
}

.rbs * { box-sizing: border-box; }

.rbs-tabs {
	display: flex;
	gap: 6px;
	margin-bottom: 14px;
}
.rbs-tab {
	flex: 1;
	padding: 10px 6px;
	border: 1px solid var(--rbs-border);
	border-radius: 10px;
	background: #fff;
	font-weight: 600;
	font-size: 15px;
	cursor: pointer;
	color: var(--rbs-text);
}
.rbs-tab[aria-selected="true"] {
	background: var(--rbs-blue);
	border-color: var(--rbs-blue);
	color: #fff;
}

.rbs-panel {
	border: 1px solid var(--rbs-border);
	border-radius: 12px;
	padding: 16px;
	background: #fff;
	margin-bottom: 14px;
}
.rbs-panel h3 {
	margin: 0 0 8px;
	font-size: 17px;
}
.rbs-panel p { margin: 0 0 10px; }
.rbs-muted { color: var(--rbs-muted); font-size: 14px; }
.rbs-loading { color: var(--rbs-muted); }

/* calibration */
.rbs-cal-status {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 10px;
	flex-wrap: wrap;
}
.rbs-badge {
	display: inline-block;
	padding: 3px 10px;
	border-radius: 999px;
	font-size: 13px;
	font-weight: 600;
	background: #fef3c7;
	color: #92400e;
}
.rbs-badge.ok { background: #d1fae5; color: #065f46; }

.rbs-card-stage {
	position: relative;
	width: 100%;
	overflow: hidden;
	background: var(--rbs-bg);
	border-radius: 10px;
	padding: 16px 0;
	display: flex;
	justify-content: center;
}
.rbs-card {
	border: 3px dashed var(--rbs-blue);
	border-radius: 10px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--rbs-blue);
	font-size: 13px;
	font-weight: 600;
	text-align: center;
	padding: 6px;
}

/* sliders */
.rbs-slider-row {
	display: flex;
	align-items: center;
	gap: 10px;
	margin: 12px 0;
}
.rbs-slider-row input[type="range"] {
	flex: 1;
	min-width: 0;
}
.rbs-step {
	width: 40px;
	height: 40px;
	border-radius: 50%;
	border: 1px solid var(--rbs-border);
	background: #fff;
	font-size: 20px;
	line-height: 1;
	cursor: pointer;
	flex-shrink: 0;
}

/* buttons */
.rbs-btn {
	display: inline-block;
	padding: 10px 18px;
	border-radius: 8px;
	border: none;
	background: var(--rbs-blue);
	color: #fff;
	font-weight: 600;
	font-size: 15px;
	cursor: pointer;
}
.rbs-btn:hover { background: var(--rbs-blue-dark); }
.rbs-btn.secondary {
	background: #fff;
	color: var(--rbs-blue);
	border: 1px solid var(--rbs-blue);
}
.rbs-btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }

/* circle stage */
.rbs-stage {
	position: relative;
	width: 100%;
	min-height: 260px;
	background: var(--rbs-bg);
	border-radius: 10px;
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
}
.rbs-stage svg { display: block; }
.rbs-stage .rbs-circle { fill: none; stroke: var(--rbs-blue); stroke-width: 2; }
.rbs-stage .rbs-circle-inner { fill: #fff; stroke: none; }
.rbs-stage .rbs-center { stroke: #9ca3af; stroke-width: 1; }
.rbs-stage-label {
	position: absolute;
	bottom: 8px;
	left: 0; right: 0;
	text-align: center;
	font-size: 13px;
	color: var(--rbs-muted);
}

/* result */
.rbs-result {
	background: #eff6ff;
	border: 1px solid #bfdbfe;
	border-radius: 10px;
	padding: 14px 16px;
	margin-top: 12px;
}
.rbs-result .rbs-big {
	font-size: 30px;
	font-weight: 700;
	line-height: 1.1;
	margin-bottom: 6px;
}
.rbs-result table { width: 100%; border-collapse: collapse; margin-top: 6px; font-size: 15px; }
.rbs-result td { padding: 5px 0; border-bottom: 1px solid #dbeafe; }
.rbs-result td:last-child { text-align: right; font-weight: 600; }
.rbs-result tr:last-child td { border-bottom: none; }

/* inputs */
.rbs-field { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 8px 0; }
.rbs-field label { font-weight: 600; font-size: 14px; }
.rbs-field input[type="number"] {
	width: 110px;
	padding: 8px 10px;
	border: 1px solid var(--rbs-border);
	border-radius: 8px;
	font-size: 16px;
}
.rbs-field select {
	padding: 8px 10px;
	border: 1px solid var(--rbs-border);
	border-radius: 8px;
	font-size: 15px;
	background: #fff;
}

/* method toggle */
.rbs-methods { display: flex; gap: 6px; margin: 0 0 12px; flex-wrap: wrap; }
.rbs-method {
	padding: 7px 12px;
	border-radius: 999px;
	border: 1px solid var(--rbs-border);
	background: #fff;
	font-size: 14px;
	cursor: pointer;
}
.rbs-method[aria-pressed="true"] { background: var(--rbs-text); color: #fff; border-color: var(--rbs-text); }

.rbs-hidden { display: none !important; }

.rbs-note {
	font-size: 13px;
	color: var(--rbs-muted);
	margin-top: 10px;
}

@media (min-width: 600px) {
	.rbs-panel { padding: 20px 22px; }
	.rbs-result .rbs-big { font-size: 34px; }
}