:root {
    --bg: #f3f7f6;
    --surface: #ffffff;
    --surface-soft: #f8fbfa;
    --text: #17312c;
    --muted: #667c76;
    --line: #dbe7e3;
    --primary: #087f69;
    --primary-dark: #056453;
    --primary-soft: #e3f5f0;
    --danger: #b42318;
    --danger-soft: #fff0ee;
    --warning: #9a6700;
    --warning-soft: #fff7d6;
    --success: #147a52;
    --shadow: 0 18px 45px rgba(24, 58, 50, .08);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); }
body { margin: 0; min-height: 100vh; background: var(--bg); color: var(--text); }
a { color: inherit; }
code { font-family: "Cascadia Code", Consolas, monospace; font-size: .92em; }

.topbar {
    min-height: 72px;
    display: grid;
    grid-template-columns: minmax(220px, 1fr) auto minmax(220px, 1fr);
    align-items: center;
    gap: 24px;
    padding: 12px clamp(18px, 3vw, 44px);
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(14px);
}

.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; width: fit-content; }
.brand span:last-child { display: grid; }
.brand strong { font-size: 15px; }
.brand small { color: var(--muted); font-size: 11px; margin-top: 2px; }
.brand-mark {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    display: inline-grid;
    place-items: center;
    color: white;
    background: linear-gradient(145deg, #0b9a7e, #056453);
    box-shadow: 0 12px 28px rgba(8,127,105,.25);
    font-weight: 800;
    font-size: 22px;
}
.brand-mark.small { width: 38px; height: 38px; border-radius: 12px; font-size: 18px; }

.nav-links { display: flex; align-items: center; justify-content: center; gap: 8px; }
.nav-links a { text-decoration: none; color: var(--muted); padding: 9px 12px; border-radius: 10px; font-weight: 650; font-size: 14px; }
.nav-links a:hover { background: var(--primary-soft); color: var(--primary-dark); }
.account-block { justify-self: end; display: flex; align-items: center; justify-content: flex-end; gap: 12px; color: var(--muted); font-size: 13px; }

.page-shell { width: min(1460px, calc(100% - 36px)); margin: 30px auto 56px; }
.page-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 8px; font-size: clamp(28px, 3vw, 42px); letter-spacing: -.035em; }
h2 { margin-bottom: 5px; font-size: 20px; letter-spacing: -.015em; }
.eyebrow { margin-bottom: 8px; color: var(--primary); font-weight: 800; letter-spacing: .14em; font-size: 11px; }
.muted { color: var(--muted); line-height: 1.55; }

.panel, .metric-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
}
.panel { padding: 22px; margin-bottom: 22px; }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.panel-heading p { margin-bottom: 0; font-size: 13px; }

.metric-grid { display: grid; grid-template-columns: repeat(6, minmax(130px, 1fr)); gap: 14px; margin-bottom: 22px; }
.metric-card { padding: 18px; box-shadow: none; }
.metric-card span { display: block; color: var(--muted); font-size: 12px; font-weight: 700; margin-bottom: 8px; }
.metric-card strong { display: block; font-size: clamp(22px, 2.4vw, 32px); line-height: 1; }
.metric-card.warning { background: var(--warning-soft); border-color: #f2d675; }

.two-column { display: grid; grid-template-columns: minmax(300px, .72fr) minmax(0, 1.6fr); gap: 22px; align-items: start; }
.voucher-layout { grid-template-columns: minmax(300px, .65fr) minmax(0, 1.7fr); }
.form-panel { position: sticky; top: 96px; }

label { display: block; margin: 15px 0 7px; font-size: 13px; font-weight: 750; }
input[type=text], input[type=password], input[type=number], select {
    width: 100%;
    min-height: 44px;
    border: 1px solid #cbdad5;
    border-radius: 12px;
    background: #fff;
    color: var(--text);
    padding: 10px 12px;
    font: inherit;
    outline: none;
}
input:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(8,127,105,.12); }
.field-help { display: block; color: var(--muted); font-size: 11px; margin-top: 6px; line-height: 1.4; }
.field-divider { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 11px; margin: 13px 0 0; }
.field-divider::before, .field-divider::after { content: ""; height: 1px; background: var(--line); flex: 1; }

.button {
    appearance: none;
    border: 0;
    border-radius: 11px;
    min-height: 42px;
    padding: 10px 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font: inherit;
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
    transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.button:hover { transform: translateY(-1px); }
.button.primary { color: white; background: var(--primary); }
.button.primary:hover { background: var(--primary-dark); }
.button.subtle { color: var(--primary-dark); background: var(--primary-soft); }
.button.compact { min-height: 34px; padding: 6px 10px; font-size: 12px; }
.button.full { width: 100%; margin-top: 19px; }
.button.danger-outline { color: var(--danger); background: white; border: 1px solid #efb6b0; }
.button.success-outline { color: var(--success); background: white; border: 1px solid #a8dbc7; }
.text-link { color: var(--primary); text-decoration: none; font-weight: 750; font-size: 13px; white-space: nowrap; }

.notice { border-radius: 12px; padding: 11px 13px; margin: 0 0 16px; font-size: 13px; line-height: 1.45; }
.notice.success { background: var(--primary-soft); color: var(--primary-dark); border: 1px solid #afe0d3; }
.notice.error { background: var(--danger-soft); color: var(--danger); border: 1px solid #f0b7b2; }

.table-wrap { width: 100%; overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; min-width: 720px; }
.data-table th { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.data-table td { padding: 13px 12px; border-bottom: 1px solid #edf3f1; font-size: 13px; vertical-align: middle; }
.data-table tr:last-child td { border-bottom: 0; }
.data-table td:first-child { font-family: "Cascadia Code", Consolas, monospace; font-weight: 700; white-space: nowrap; }
.filter-heading { align-items: flex-end; }
.filter-control { width: 190px; flex: 0 0 auto; }
.filter-control label { margin-top: 0; }

.issued-codes { margin-top: 18px; padding: 14px; border-radius: 14px; background: var(--surface-soft); border: 1px solid var(--line); }
.issued-heading { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 10px; }
.code-list { display: grid; gap: 6px; max-height: 260px; overflow: auto; }
.code-list code { display: block; padding: 8px 10px; border-radius: 8px; background: white; border: 1px solid var(--line); user-select: all; }

.login-page { background: radial-gradient(circle at 15% 10%, #d9f2ea 0, transparent 35%), var(--bg); }
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: min(430px, 100%); background: white; border: 1px solid var(--line); border-radius: 24px; padding: 30px; box-shadow: var(--shadow); }
.login-card .brand-mark { margin-bottom: 22px; }
.login-card h1 { font-size: 31px; }
.privacy-note { margin: 18px 0 0; color: var(--muted); font-size: 11px; line-height: 1.5; text-align: center; }

@media (max-width: 1100px) {
    .metric-grid { grid-template-columns: repeat(3, 1fr); }
    .topbar { grid-template-columns: 1fr auto; }
    .nav-links { grid-row: 2; grid-column: 1 / -1; justify-content: flex-start; overflow-x: auto; }
}

@media (max-width: 820px) {
    .page-shell { width: min(100% - 22px, 1460px); margin-top: 18px; }
    .topbar { padding: 11px 14px; gap: 10px; }
    .account-block span { display: none; }
    .two-column { grid-template-columns: 1fr; }
    .form-panel { position: static; }
    .page-heading { align-items: flex-start; flex-direction: column; }
    .metric-grid { grid-template-columns: repeat(2, 1fr); }
    .panel { padding: 17px; border-radius: 17px; }
    .filter-heading { align-items: stretch; flex-direction: column; }
    .filter-control { width: 100%; }
}

@media (max-width: 500px) {
    .metric-grid { grid-template-columns: 1fr 1fr; gap: 9px; }
    .metric-card { padding: 14px; }
    .brand strong { font-size: 13px; }
    .brand small { display: none; }
    .login-card { padding: 23px; }
    .nav-links a { padding: 8px 9px; }
}