:root {
    --os-bg: #eef3f9;
    --os-panel: #ffffff;
    --os-border: #d7e0ea;
    --os-text: #0f172a;
    --os-muted: #64748b;
    --os-accent: #16a34a;
    --os-accent-soft: rgba(22, 163, 74, 0.12);
    --os-warning: #d97706;
    --os-warning-soft: rgba(217, 119, 6, 0.12);
    --os-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
    --os-login-bg: linear-gradient(160deg, #f8fbff 0%, #e8eef7 100%);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    min-height: 100dvh;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--os-bg);
    color: var(--os-text);
    line-height: 1.45;
}

.os-shell {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100dvh;
    padding: 1rem 1rem 2rem;
}

.os-login-body {
    display: grid;
    place-items: center;
    min-height: 100dvh;
    padding: 1.25rem;
    background: var(--os-login-bg);
}

.os-login-card {
    width: 100%;
    max-width: 400px;
    background: var(--os-panel);
    border: 1px solid var(--os-border);
    border-radius: 1rem;
    box-shadow: var(--os-shadow);
    padding: 1.5rem;
}

.os-brand {
    display: flex;
    justify-content: center;
    margin-bottom: 1rem;
}

.os-brand-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.os-brand-accent {
    color: var(--os-accent);
}

.os-title {
    margin: 0 0 0.25rem;
    font-size: 1.35rem;
    font-weight: 700;
    text-align: center;
}

.os-subtitle {
    margin: 0 0 1.25rem;
    color: var(--os-muted);
    font-size: 0.92rem;
    text-align: center;
}

.os-field {
    margin-bottom: 0.9rem;
}

.os-label {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.85rem;
    font-weight: 600;
}

.os-input {
    width: 100%;
    border: 1px solid var(--os-border);
    border-radius: 0.65rem;
    background: #f8fafc;
    color: var(--os-text);
    padding: 0.75rem 0.85rem;
    font-size: 1rem;
}

.os-input:focus {
    outline: 2px solid rgba(22, 163, 74, 0.25);
    border-color: var(--os-accent);
}

.os-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    border: 0;
    border-radius: 0.65rem;
    padding: 0.8rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}

.os-btn-primary {
    background: var(--os-accent);
    color: #fff;
}

.os-btn-ghost {
    background: transparent;
    color: var(--os-muted);
    width: auto;
    padding: 0.35rem 0.5rem;
    font-size: 0.85rem;
}

.os-alert {
    border-radius: 0.65rem;
    padding: 0.75rem 0.85rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.os-alert-error {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.os-hint {
    margin-top: 1rem;
    color: var(--os-muted);
    font-size: 0.8rem;
    text-align: center;
}

.os-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.os-header-main {
    min-width: 0;
}

.os-shop-name {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.os-updated {
    margin: 0.15rem 0 0;
    color: var(--os-muted);
    font-size: 0.78rem;
}

.os-venue-tabs {
    display: flex;
    gap: 0.45rem;
    overflow-x: auto;
    padding-bottom: 0.35rem;
    margin-bottom: 0.85rem;
    scrollbar-width: none;
}

.os-venue-tabs::-webkit-scrollbar {
    display: none;
}

.os-venue-tab {
    flex: 0 0 auto;
    border: 1px solid var(--os-border);
    background: var(--os-panel);
    color: var(--os-text);
    border-radius: 0.75rem;
    padding: 0.5rem 0.9rem;
    font-size: 0.82rem;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
}

.os-venue-tab.is-active {
    background: #0f172a;
    border-color: #0f172a;
    color: #fff;
}

.os-periods {
    display: flex;
    gap: 0.45rem;
    overflow-x: auto;
    padding-bottom: 0.25rem;
    margin-bottom: 1rem;
    scrollbar-width: none;
}

.os-periods::-webkit-scrollbar {
    display: none;
}

.os-period-chip {
    flex: 0 0 auto;
    border: 1px solid var(--os-border);
    background: var(--os-panel);
    color: var(--os-text);
    border-radius: 999px;
    padding: 0.45rem 0.85rem;
    font-size: 0.82rem;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
}

.os-period-chip.is-active {
    background: var(--os-accent);
    border-color: var(--os-accent);
    color: #fff;
}

.os-period-range {
    margin: -0.5rem 0 1rem;
    color: var(--os-muted);
    font-size: 0.8rem;
}

.os-card {
    background: var(--os-panel);
    border: 1px solid var(--os-border);
    border-radius: 1rem;
    box-shadow: var(--os-shadow);
    padding: 1rem;
    margin-bottom: 0.85rem;
}

.os-card-paid {
    border-left: 4px solid var(--os-accent);
}

.os-card-unpaid {
    border-left: 4px solid var(--os-warning);
}

.os-card-total {
    background: #0f172a;
    border-color: #0f172a;
    color: #fff;
}

.os-card-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--os-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.os-card-total .os-card-label {
    color: rgba(255, 255, 255, 0.72);
}

.os-card-value {
    margin-top: 0.35rem;
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.1;
}

.os-card-meta {
    margin-top: 0.35rem;
    color: var(--os-muted);
    font-size: 0.85rem;
}

.os-card-total .os-card-meta {
    color: rgba(255, 255, 255, 0.78);
}

.os-total-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.75rem;
}

.os-panel {
    background: var(--os-panel);
    border: 1px solid var(--os-border);
    border-radius: 1rem;
    box-shadow: var(--os-shadow);
    padding: 1rem;
    margin-bottom: 0.85rem;
}

.os-panel-title {
    margin: 0 0 0.75rem;
    font-size: 0.92rem;
    font-weight: 700;
}

.os-staff-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
}

.os-staff-box {
    border-radius: 0.75rem;
    padding: 0.75rem;
    background: #f8fafc;
    border: 1px solid var(--os-border);
}

.os-staff-box strong {
    display: block;
    font-size: 1.35rem;
    line-height: 1.1;
}

.os-staff-box span {
    display: block;
    margin-top: 0.2rem;
    color: var(--os-muted);
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.os-staff-list {
    margin: 0.5rem 0 0;
    padding-left: 1rem;
    color: var(--os-muted);
    font-size: 0.8rem;
}

.os-rank-list {
    margin: 0;
    padding-left: 1.15rem;
}

.os-rank-list li {
    margin-bottom: 0.55rem;
}

.os-rank-list li:last-child {
    margin-bottom: 0;
}

.os-rank-main {
    font-weight: 600;
}

.os-rank-meta {
    color: var(--os-muted);
    font-size: 0.8rem;
}

.os-muted {
    color: var(--os-muted);
    font-size: 0.85rem;
}

.os-compare-table-wrap {
    overflow-x: auto;
}

.os-compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}

.os-compare-table th,
.os-compare-table td {
    padding: 0.55rem 0.35rem;
    border-bottom: 1px solid var(--os-border);
    text-align: left;
    vertical-align: top;
}

.os-compare-table th {
    color: var(--os-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.os-compare-table tfoot td {
    font-weight: 700;
    border-bottom: 0;
}

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

.os-footer-note {
    margin-top: 1rem;
    color: var(--os-muted);
    font-size: 0.78rem;
    text-align: center;
}

@media (min-width: 420px) {
    .os-shell {
        padding: 1.25rem 1.25rem 2.5rem;
    }

    .os-card-value {
        font-size: 2.25rem;
    }
}