* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--text-color);
    background: var(--gray);
}

.vv-header {
    background: var(--blue-brand);
    padding: var(--space-4) var(--space-6);
}
.vv-header img { height: 40px; display: block; }

.vv-main {
    max-width: 720px;
    margin: var(--space-12) auto;
    padding: 0 var(--space-6);
}

.vv-main h1 {
    font-family: var(--font-display);
    color: var(--blue-brand);
    margin: 0 0 var(--space-4);
}

.vv-card {
    background: #fff;
    border-radius: var(--radius-card);
    padding: var(--space-6);
    margin-top: var(--space-8);
}
.vv-card h2 { font-family: var(--font-display); font-size: 18px; margin: 0 0 var(--space-3); }

.vv-row { display: flex; gap: var(--space-2); }
.vv-row input {
    flex: 1;
    padding: var(--space-2) var(--space-3);
    border: 1px solid #ccc;
    border-radius: var(--radius-input);
    font: inherit;
}
.vv-row button {
    padding: var(--space-2) var(--space-4);
    border: 0;
    border-radius: var(--radius-button);
    background: var(--blue-brand);
    color: #fff;
    font: inherit;
    cursor: pointer;
}
.vv-row button:hover { background: var(--blue-4); }

.vv-result { margin-top: var(--space-3); color: var(--text-muted); white-space: pre-wrap; }

/* ════════════════════════════════════════════════════════════════
 * Shell + vs-* components (GS1-388 mockup, built on mitt's tokens).
 * Pages using this shell put class="vs-body" on <body>.
 * ════════════════════════════════════════════════════════════════ */
:root {
    /* from mitt styles.css :root; not in tokens.css */
    --surface-bg: #F8FAFC;
    --text-strong: #111827;
    --text-mid: #374151;
    --font-mono: 'SF Mono', Menlo, Consolas, monospace;
}

body.vs-body {
    background: var(--surface-bg);
    font-size: 15px;
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.vs-body :where(h1, h2) { margin: 0; font-size: inherit; font-weight: inherit; }
.vs-body a { color: var(--light-blue-3); text-decoration: none; }
.vs-body a:hover { text-decoration: underline; }
.vs-body button { font-family: inherit; }
[hidden] { display: none !important; }

.t-page-header { font-family: var(--font-display); font-size: 32px; font-weight: 400; line-height: 1.2; color: var(--text-strong); }
.t-section-title { font-family: var(--font-display); font-size: 20px; font-weight: 500; line-height: 1.3; color: var(--text-strong); }
.t-body { font-size: 14px; line-height: 1.6; color: var(--text-mid); }
.t-caption { font-size: 12px; line-height: 1.4; color: var(--text-muted); }
.t-mono { font-family: var(--font-mono); font-size: 14px; font-weight: 500; color: var(--text-strong); }

.vs-utility { background: var(--light-blue-2); color: var(--blue-brand); padding: 4px 32px; text-align: right; font-size: 11px; letter-spacing: .02em; }
.vs-header { background: #fff; border-bottom: 1px solid #EEF2F7; padding: 14px 32px; display: flex; align-items: center; gap: 20px; color: var(--text-mid); }
.vs-header-logo { height: 40px; width: auto; display: block; }
.vs-header-title { color: var(--text-muted); font-size: 14px; padding-left: 14px; border-left: 1px solid var(--border-card); }
.vs-spacer { flex: 1; }
.vs-body .vs-header-link { display: inline-flex; align-items: center; gap: 6px; color: var(--text-mid); font-size: 13px; }
.vs-body .vs-header-link:hover { color: var(--blue-brand); }
.vs-staff-chip { display: inline-flex; align-items: center; gap: 6px; background: #CCFBF1; color: #115E59; font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 999px; text-transform: uppercase; letter-spacing: .04em; }
.vs-footer { margin-top: auto; background: #fff; border-top: 1px solid var(--border-card); padding: 18px 32px; display: flex; align-items: center; gap: 24px; font-size: 12px; color: var(--text-muted); }
.vs-footer .mid { flex: 1; text-align: center; }
.vs-body .vs-footer a { color: var(--blue-brand); }
.vs-footer-brand { font-family: var(--font-display); color: var(--blue-brand); }
.vs-main { flex: 1; width: 100%; max-width: 1120px; margin: 0 auto; padding: 32px 32px 64px; }
.vs-main.narrow { max-width: 680px; }

.vs-title-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.vs-lead { margin: 8px 0 18px; }
.vs-stack > * + * { margin-top: 14px; }

.vs-card { background: #fff; border: 1px solid var(--border-card); border-radius: 10px; box-shadow: 0 1px 2px rgba(0,0,0,.03); overflow: hidden; }
.vs-card-body { padding: 20px 22px; }
.vs-card-foot { display: flex; justify-content: flex-end; align-items: center; gap: 10px; flex-wrap: wrap; padding: 14px 22px; background: #F8F8F8; border-top: 1px solid var(--border-card); }
.vs-card-foot .t-caption { margin-right: auto; }
.vs-dl { margin: 0; display: grid; grid-template-columns: 150px 1fr; gap: 11px 18px; font-size: 14px; }
.vs-dl dt { font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: .05em; color: var(--text-muted); padding-top: 2px; }
.vs-dl dd { margin: 0; color: var(--text-strong); }
.vs-dl dd .t-mono { font-size: 13.5px; }
.vs-amount { font-family: var(--font-display); font-size: 20px; font-weight: 500; }

.vs-status { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px 3px 8px; border-radius: 999px; font-size: 11.5px; font-weight: 600; border: 1px solid; }
.vs-status::before { content: ''; width: 6px; height: 6px; border-radius: 999px; background: currentColor; }
.vs-status.ok { background: #F0FFF4; border-color: #C6F6D5; color: #276749; }
.vs-status.wait { background: #FFFFF0; border-color: #FEFCBF; color: #975A16; }
.vs-status.grey { background: #F3F4F6; border-color: #D1D5DB; color: #4B5563; }

.gs1-btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 22px; background: var(--orange-brand); color: #fff; border: 0; border-radius: 6px; font-size: 15px; font-weight: 700; cursor: pointer; }
.gs1-btn-primary:hover { background: var(--orange-3); }
.gs1-btn-primary.busy { background: #F79A7A; cursor: progress; }
.vg-btn-secondary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: #fff; color: var(--blue-brand); border: 1px solid var(--light-blue-2); padding: 9px 16px; border-radius: 4px; font-size: 14px; font-weight: 600; cursor: pointer; }
.vg-btn-secondary:hover { background: #F0F5FA; border-color: var(--blue-brand); text-decoration: none !important; }

.vs-alert { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: 8px; border: 1px solid; border-left-width: 3px; font-size: 13.5px; line-height: 1.5; }
.vs-alert svg { flex-shrink: 0; margin-top: 2px; }
.vs-alert b { font-weight: 700; }
.vs-alert p { margin: 0; }
.vs-alert p + p { margin-top: 4px; }
.vs-alert .act { margin-top: 10px; display: flex; gap: 8px; flex-wrap: wrap; }
.vs-alert.info { background: var(--light-blue); border-color: var(--light-blue-2); border-left-color: var(--light-blue-3); color: var(--blue-brand); }
.vs-alert.success { background: var(--success-bg); border-color: var(--success-border); border-left-color: #22C55E; color: var(--success-text); }
.vs-alert.warning { background: #FFFBEB; border-color: #FDE68A; border-left-color: #D97706; color: #92400E; }
.vs-alert.error { background: var(--error-bg); border-color: var(--error-border); border-left-color: var(--error); color: var(--error-text-dark); }
.vs-alert.neutral { background: #F9FAFB; border-color: var(--border-card); border-left-color: #9CA3AF; color: var(--text-mid); }
.vs-alert .t-mono { font-size: 12px; color: inherit; }

.spin { display: inline-block; width: 14px; height: 14px; border-radius: 999px; border: 2px solid #D1D5DB; border-top-color: var(--light-blue-3); animation: vsspin .9s linear infinite; flex-shrink: 0; }
.spin.white { border-color: rgba(255,255,255,.45); border-top-color: #fff; }
@keyframes vsspin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spin { animation: none; border-right-color: var(--light-blue-3); } }
.skel { height: 12px; border-radius: 4px; background: linear-gradient(90deg, #EEF1F5, #F6F8FA, #EEF1F5); margin: 8px 0; }
.vs-loading { display: flex; gap: 8px; align-items: center; }

.vs-done { background: #fff; border: 1px solid var(--border-card); border-radius: 12px; padding: 28px 30px; box-shadow: 0 1px 2px rgba(0,0,0,.03); }
.vs-done-icon { width: 46px; height: 46px; border-radius: 999px; background: var(--success-bg); border: 1px solid var(--success-border); color: var(--success-text); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.vs-done .t-body { margin: 6px 0 0; }

@media (max-width: 720px) {
    .vs-utility { display: none; }
    .vs-header { padding: 10px 16px; gap: 12px; }
    .vs-header-logo { height: 34px; }
    .vs-hide-narrow { display: none !important; }
    .vs-body .vs-header-link { min-height: 44px; }
    .vs-main { padding: 18px 16px 40px; }
    .t-page-header { font-size: 26px; }
    .vs-dl { grid-template-columns: 1fr; gap: 2px 0; }
    .vs-dl dt { padding-top: 0; }
    .vs-dl dd { margin-bottom: 10px; }
    .vs-card-body { padding: 16px; }
    .vs-card-foot { padding: 14px 16px; }
    .vs-card-foot > button { width: 100%; padding: 13px 16px; }
    .vs-card-foot .t-caption { margin: 0; }
    .gs1-btn-primary, .vg-btn-secondary { min-height: 48px; }
    .vs-done { padding: 24px 18px; }
    .vs-footer { flex-direction: column; gap: 6px; padding: 16px; text-align: center; }
}