:root {
    --sap-bg: #eef3f8;
    --sap-panel: #ffffff;
    --sap-border: #d6dde6;
    --sap-blue: #0a6ed1;
    --sap-blue-dark: #0854a0;
    --sap-text: #223548;
    --sap-muted: #5f7387;
    --sap-danger: #bb0000;
    --sap-success: #107e3e;
}

* {
    box-sizing: border-box;
}

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

.topbar {
    background: linear-gradient(90deg, var(--sap-blue-dark), var(--sap-blue));
    color: #fff;
    padding: 16px 24px;
    text-align: center;
}

.topbar-title {
    font-family: "Trebuchet MS", "Segoe UI", Arial, sans-serif;
    font-size: 34px;
    font-weight: 700;
    letter-spacing: 0.4px;
    line-height: 1.15;
}

.topbar-subtitle {
    margin-top: 4px;
    font-size: 17px;
    font-weight: 500;
    opacity: 0.95;
}

.container {
    max-width: 1200px;
    margin: 18px auto;
    padding: 0 14px;
    width: 100%;
}

.panel {
    background: var(--sap-panel);
    border: 1px solid var(--sap-border);
    border-radius: 6px;
    margin-bottom: 14px;
}

.panel-head {
    padding: 10px 14px;
    border-bottom: 1px solid var(--sap-border);
    font-size: 14px;
    font-weight: 600;
    background: #f7f9fb;
}

.panel-body {
    padding: 12px 14px 14px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(130px, 1fr));
    gap: 10px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

label {
    font-size: 12px;
    color: var(--sap-muted);
    margin-bottom: 4px;
}

input, select, textarea {
    border: 1px solid #bfcad5;
    border-radius: 4px;
    padding: 8px 9px;
    font-size: 13px;
    background: #fff;
}

textarea {
    min-height: 72px;
    resize: vertical;
}

.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-6 { grid-column: span 6; }

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.btn {
    border: 1px solid var(--sap-blue);
    background: var(--sap-blue);
    color: #fff;
    padding: 7px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
}

.btn:hover { background: #0b5eb8; }

.btn-secondary {
    background: #fff;
    color: var(--sap-blue);
}

.btn-danger {
    background: var(--sap-danger);
    border-color: var(--sap-danger);
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.stat {
    border: 1px solid var(--sap-border);
    border-radius: 4px;
    padding: 10px;
    background: #fbfdff;
}

.stat small {
    color: var(--sap-muted);
    font-size: 11px;
    display: block;
}

.stat strong {
    font-size: 19px;
}

.positive { color: var(--sap-success); }
.negative { color: var(--sap-danger); }

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    min-width: 900px;
}

th, td {
    border: 1px solid var(--sap-border);
    padding: 8px;
    text-align: left;
}

th {
    background: #f0f4f9;
    font-size: 12px;
    color: #3e566e;
}

.flash {
    margin-bottom: 12px;
    background: #e8f4ff;
    border: 1px solid #b8dbff;
    color: #164a7b;
    border-radius: 4px;
    padding: 8px 10px;
    font-size: 13px;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.row-actions {
    white-space: nowrap;
}

.export-block {
    margin-top: 12px;
    background: #f2f4f7;
    border: 1px solid #d2dae3;
    border-radius: 6px;
    padding: 10px;
}

.export-panel {
    background: #edf1f5;
}

.login-panel {
    max-width: 460px;
    margin: 28px auto 14px;
    box-shadow: 0 8px 22px rgba(34, 53, 72, 0.12);
}

.login-form {
    width: 100%;
}

.login-grid {
    grid-template-columns: 1fr;
}

.login-grid .span-6 {
    grid-column: span 1;
}

.login-panel .grid {
    grid-template-columns: 1fr !important;
}

.login-panel .form-group {
    width: 100%;
}

.login-panel .form-group.span-6 {
    grid-column: 1 / -1 !important;
}

.login-form input[type="password"] {
    width: 100%;
    max-width: 100%;
    display: block;
}

.login-panel .actions {
    justify-content: center;
}

.login-actions .btn {
    min-width: 120px;
}

@media (max-width: 980px) {
    .grid { grid-template-columns: repeat(2, 1fr); }
    .span-2, .span-3, .span-6 { grid-column: span 2; }
    .stats { grid-template-columns: 1fr; }
    .topbar {
        padding: 12px 14px;
    }
    .topbar-title {
        font-size: 26px;
    }
    .topbar-subtitle {
        font-size: 15px;
    }
    .container {
        padding: 0 10px;
        margin: 10px auto;
    }
    .panel-head {
        padding: 9px 10px;
    }
    .panel-body {
        padding: 10px;
    }
    .btn {
        width: 100%;
        text-align: center;
    }
    .login-actions .btn {
        width: auto;
    }
    .row-actions {
        min-width: 160px;
    }
}

@media (max-width: 640px) {
    .grid { grid-template-columns: 1fr; }
    .span-2, .span-3, .span-6 { grid-column: span 1; }
    input, select, textarea {
        font-size: 16px;
    }
    .actions {
        flex-direction: column;
        align-items: stretch;
    }
    .stat strong {
        font-size: 17px;
    }
    .login-panel {
        max-width: 100%;
        margin-top: 14px;
    }
    .login-actions .btn {
        width: 100%;
    }
}