:root {
    --bg: #f4f6f9;
    --card-bg: #ffffff;
    --border: #e2e6ec;
    --text: #1f2430;
    --text-muted: #6b7280;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --danger: #dc2626;
    --success: #16a34a;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

a { color: var(--primary); text-decoration: none; }

.topbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.topbar-inner {
    max-width: 1800px;
    width: 96%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 24px;
    height: 60px;
    flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 18px; }
.tabs { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.tab {
    padding: 8px 14px;
    border-radius: 8px;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 14px;
}
.tab:hover { background: var(--bg); color: var(--text); }
.tab.active { background: var(--primary); color: #fff; }
.user-box { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.user-login { font-weight: 600; }
.logout-link { color: var(--text-muted); }
.logout-link:hover { color: var(--danger); }

.content {
    max-width: 1800px;
    width: 96%;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

h1 { font-size: 22px; margin: 0 0 20px; }
h2 { font-size: 16px; margin: 0 0 12px; }

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.field { margin-bottom: 14px; }
.field label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.field input, .field select, .field textarea {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    background: #fff;
    color: var(--text);
}
.field input:focus, .field select:focus, .field textarea:focus {
    outline: none;
    border-color: var(--primary);
}
.field-row { display: flex; gap: 8px; }
.field-suffix { color: var(--text-muted); font-size: 13px; align-self: center; white-space: nowrap; }

.btn {
    display: inline-block;
    padding: 9px 16px;
    border-radius: 8px;
    border: none;
    background: var(--primary);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}
.btn:hover { background: var(--primary-dark); }
.btn.secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 5px 10px; font-size: 12px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
tr:last-child td { border-bottom: none; }

.badge {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}
.badge.online { background: #dcfce7; color: var(--success); }
.badge.offline { background: #f1f2f4; color: var(--text-muted); }
.badge.role-superadmin { background: #fef3c7; color: #92400e; }
.badge.role-user { background: #e0e7ff; color: #3730a3; }

.result-box {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 18px;
}
.result-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 14px;
    border-bottom: 1px dashed var(--border);
}
.result-row:last-child { border-bottom: none; }
.result-row.total {
    font-size: 20px;
    font-weight: 700;
    margin-top: 8px;
    padding-top: 12px;
    border-top: 2px solid var(--border);
    border-bottom: none;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    padding: 20px;
}
.login-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    width: 100%;
    max-width: 360px;
}
.login-card h1 { text-align: center; margin-bottom: 24px; }
.error-msg {
    background: #fee2e2;
    color: var(--danger);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 16px;
}
.success-msg {
    background: #dcfce7;
    color: var(--success);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 16px;
}

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 16px;
}
.modal-overlay.open { display: flex; }
.modal {
    background: #fff;
    border-radius: var(--radius);
    padding: 24px;
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
}
.modal.modal-lg {
    max-width: 1100px;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.modal-close { cursor: pointer; color: var(--text-muted); font-size: 20px; background: none; border: none; }

.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; flex-wrap: wrap; gap: 10px; }

.muted { color: var(--text-muted); font-size: 13px; }

.actions-cell { display: flex; gap: 6px; flex-wrap: wrap; }

@media (max-width: 640px) {
    .topbar-inner { height: auto; padding: 10px 16px; }
    table, thead, tbody, th, td, tr { display: block; }
    thead { display: none; }
    tr { border-bottom: 1px solid var(--border); padding: 8px 0; }
    td { border: none; padding: 4px 0; }
    td::before { content: attr(data-label); font-weight: 600; color: var(--text-muted); display: inline-block; min-width: 140px; }
}