.srb-wrapper { --srb-color: #2563eb; margin: 12px 0; }
.srb-description { margin-bottom: 10px; color: #444; }

.srb-buy-button {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	border: none;
	border-radius: 8px;
	color: #fff;
	cursor: pointer;
	font-weight: 600;
	font-family: inherit;
	transition: transform .12s ease, box-shadow .12s ease, opacity .12s ease;
	box-shadow: 0 2px 6px rgba(0,0,0,.12);
}
.srb-buy-button:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,.16); }
.srb-buy-button:disabled { opacity: .5; cursor: not-allowed; }

.srb-size-small .srb-buy-button { padding: 8px 16px; font-size: 13px; }
.srb-size-medium .srb-buy-button { padding: 12px 22px; font-size: 15px; }
.srb-size-large .srb-buy-button { padding: 16px 30px; font-size: 17px; }

.srb-style-outline.srb-buy-button { background: transparent !important; border: 2px solid currentColor; color: inherit; }
.srb-style-rounded.srb-buy-button { border-radius: 999px; }

.srb-modal[hidden] { display: none; }
.srb-modal { position: fixed; inset: 0; z-index: 100000; display: flex; align-items: center; justify-content: center; }
.srb-modal-overlay { position: absolute; inset: 0; background: rgba(15,23,42,.55); }
.srb-modal-content {
	position: relative;
	background: #fff;
	border-radius: 14px;
	padding: 28px;
	width: 92%;
	max-width: 460px;
	max-height: 88vh;
	overflow-y: auto;
	box-shadow: 0 20px 60px rgba(0,0,0,.3);
	animation: srb-pop .18s ease;
}
@keyframes srb-pop { from { transform: scale(.96); opacity: 0; } to { transform: scale(1); opacity: 1; } }

.srb-modal-close {
	all: unset;
	box-sizing: border-box;
	position: absolute;
	top: 12px;
	right: 12px;
	width: 32px;
	height: 32px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: #f1f2f4;
	border-radius: 50%;
	font-size: 18px;
	line-height: 1;
	cursor: pointer;
	color: #555;
	z-index: 2;
	transition: background .15s ease, color .15s ease;
}
.srb-modal-close:hover { background: #e4e6e9; color: #111; }
.srb-modal-content h3 { margin: 0 0 6px; font-size: 20px; }
.srb-amount { font-size: 24px; font-weight: 700; margin-bottom: 18px; color: #111; }

.srb-field { margin-bottom: 14px; }
.srb-field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: #333; }
.srb-field input[type="text"],
.srb-field input[type="email"],
.srb-field input[type="tel"],
.srb-field input[type="number"],
.srb-field input[type="date"],
.srb-field input[type="time"],
.srb-field input[type="url"],
.srb-field input[type="password"],
.srb-field select,
.srb-field textarea {
	width: 100%;
	padding: 10px 12px;
	border: 1px solid #d1d5db;
	border-radius: 8px;
	font-size: 14px;
	box-sizing: border-box;
	font-family: inherit;
}
.srb-field textarea { min-height: 80px; resize: vertical; }
.srb-field input:focus, .srb-field select:focus, .srb-field textarea:focus {
	outline: none; border-color: var(--srb-color); box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
.srb-inline { display: inline-flex; align-items: center; gap: 6px; margin-right: 14px; font-weight: 400; }
.srb-req { color: #dc2626; }
.srb-width-half { display: inline-block; width: 48%; }
.srb-width-half:nth-child(odd) { margin-right: 4%; }

.srb-form-error {
	display: none;
	background: #fef2f2;
	color: #b91c1c;
	border: 1px solid #fecaca;
	padding: 10px 12px;
	border-radius: 8px;
	font-size: 13px;
	margin-bottom: 14px;
}

.srb-pay-now-btn {
	width: 100%;
	border: none;
	color: #fff;
	padding: 13px;
	border-radius: 8px;
	font-size: 15px;
	font-weight: 700;
	cursor: pointer;
}
.srb-pay-now-btn:disabled { opacity: .6; cursor: wait; }

body.srb-modal-open { overflow: hidden; }