:root {
    --sts-blue: #1769aa;
    --sts-blue-dark: #0d4f84;
    --sts-blue-soft: #eef7ff;
    --sts-border: #dbe8f2;
    --sts-text: #17324a;
    --sts-muted: #6c7e8d;
}

.sts-widget {
    margin: 18px 0;
    overflow: hidden;
    border: 1px solid var(--sts-border);
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 8px 25px rgba(24, 76, 116, 0.07);
    font-family: inherit;
}

.sts-widget * { box-sizing: border-box; }

.sts-widget__toggle {
    display: flex;
    width: 100%;
    min-height: 72px;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border: 0;
    background: linear-gradient(135deg, #fff 0%, #f4faff 100%);
    color: var(--sts-text);
    text-align: right;
    cursor: pointer;
}

.sts-widget__toggle:hover { background: var(--sts-blue-soft); }
.sts-widget__toggle-text strong,
.sts-widget__toggle-text small { display: block; }
.sts-widget__toggle-text strong { font-size: 15px; line-height: 1.8; }
.sts-widget__toggle-text small { color: var(--sts-muted); font-size: 12px; }

.sts-widget__icon {
    display: grid;
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    place-items: center;
    border-radius: 12px;
    background: var(--sts-blue-soft);
    font-size: 20px;
}

.sts-widget__chevron {
    margin-right: auto;
    font-size: 22px;
    transition: transform 0.2s ease;
}
.sts-widget.is-open .sts-widget__chevron { transform: rotate(180deg); }

.sts-widget__body { padding: 18px; border-top: 1px solid var(--sts-border); }
.sts-widget__intro h3 { margin: 0 0 4px; color: var(--sts-text); font-size: 18px; }
.sts-widget__intro p { margin: 0 0 16px; color: var(--sts-muted); font-size: 13px; }
.sts-form { display: grid; gap: 14px; }
.sts-form > label > span,
.sts-form legend { display: block; margin-bottom: 7px; color: var(--sts-text); font-size: 13px; font-weight: 700; }

.sts-input-wrap {
    display: flex;
    overflow: hidden;
    align-items: center;
    border: 1px solid var(--sts-border);
    border-radius: 11px;
    background: #fff;
}
.sts-input-wrap:focus-within { border-color: var(--sts-blue); box-shadow: 0 0 0 3px rgba(23, 105, 170, 0.10); }
.sts-input-wrap input { width: 100%; height: 48px; padding: 0 12px !important; border: 0 !important; outline: 0 !important; background: transparent !important; box-shadow: none !important; font-size: 16px; }
.sts-input-wrap b { padding: 0 12px; color: var(--sts-muted); font-size: 12px; white-space: nowrap; }

.sts-form fieldset { margin: 0; padding: 0; border: 0; }
.sts-fit-options { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.sts-fit-options label { position: relative; cursor: pointer; }
.sts-fit-options input { position: absolute; opacity: 0; pointer-events: none; }
.sts-fit-options span { display: block; min-height: 66px; padding: 11px 12px; border: 1px solid var(--sts-border); border-radius: 11px; transition: 0.2s ease; }
.sts-fit-options strong,
.sts-fit-options small { display: block; }
.sts-fit-options strong { color: var(--sts-text); font-size: 13px; }
.sts-fit-options small { margin-top: 3px; color: var(--sts-muted); font-size: 11px; }
.sts-fit-options input:checked + span { border-color: var(--sts-blue); background: var(--sts-blue-soft); box-shadow: inset 0 0 0 1px var(--sts-blue); }

.sts-submit {
    width: 100%;
    min-height: 48px;
    border: 0;
    border-radius: 11px;
    background: var(--sts-blue);
    color: #fff;
    font-family: inherit;
    font-weight: 800;
    cursor: pointer;
}
.sts-submit:hover { background: var(--sts-blue-dark); }

.sts-error { margin: 0; padding: 10px 12px; border-radius: 9px; background: #fff3f3; color: #a53131; font-size: 12px; }
.sts-result { padding: 20px; border: 1px solid #cfe5f6; border-radius: 14px; background: linear-gradient(145deg, #f4faff, #fff); text-align: center; }
.sts-result__eyebrow { display: block; color: var(--sts-blue-dark); font-size: 12px; font-weight: 700; }
.sts-result__size { display: grid; width: 88px; height: 88px; margin: 12px auto; place-items: center; border-radius: 50%; background: var(--sts-blue); color: #fff; box-shadow: 0 9px 22px rgba(23, 105, 170, 0.22); font-size: 28px; font-weight: 900; }
.sts-result__message { margin: 8px 0; color: var(--sts-text); font-size: 13px; line-height: 1.9; }
.sts-result__note { margin: 8px 0; padding: 8px 10px; border-radius: 8px; background: #fff; color: var(--sts-muted); font-size: 12px; }
.sts-edit { border: 0; background: transparent; color: var(--sts-blue); font-family: inherit; text-decoration: underline; cursor: pointer; }

.sts-trust-note { margin-top: 14px; padding: 12px 13px; border: 1px solid var(--sts-border); border-radius: 11px; background: #f7fbff; color: var(--sts-text); font-size: 11.5px; line-height: 1.95; }
.sts-trust-note strong,
.sts-trust-note span { display: block; }
.sts-trust-note span { margin-top: 3px; color: var(--sts-muted); }

@media (max-width: 480px) {
    .sts-widget { border-radius: 14px; }
    .sts-widget__body { padding: 15px; }
    .sts-fit-options { grid-template-columns: 1fr; }
}


.sts-result.is-unmatched {
    border-color: #f0d59f;
    background: linear-gradient(145deg, #fffaf0, #fff);
}

.sts-result.is-unmatched .sts-result__eyebrow {
    color: #8a5b08;
}

.sts-result.is-unmatched .sts-result__size {
    background: #c58a20;
    box-shadow: 0 9px 22px rgba(197, 138, 32, 0.18);
}


.sts-editor-placeholder {
    padding: 14px 16px;
    border: 1px dashed #1769aa;
    border-radius: 10px;
    background: #f4faff;
    color: #17324a;
    font-family: inherit;
    line-height: 1.9;
}