:root {
    --bg: #f4f7fb;
    --panel: #ffffff;
    --ink: #172033;
    --muted: #667085;
    --line: #d8e0eb;
    --primary: #0b6bcb;
    --primary-dark: #084f97;
    --accent: #14a38b;
    --danger-bg: #fff1f0;
    --danger: #b42318;
    --shadow: 0 18px 50px rgba(23, 32, 51, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--ink);
    background:
        linear-gradient(135deg, rgba(11, 107, 203, 0.12), rgba(20, 163, 139, 0.08)),
        var(--bg);
    font-family: Arial, Helvetica, sans-serif;
}

.app-shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 42px 0;
}

.login-panel {
    width: min(430px, 100%);
    margin: 8vh auto 0;
    padding: 36px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.brand-mark {
    display: grid;
    width: 52px;
    height: 52px;
    place-items: center;
    margin-bottom: 20px;
    color: #ffffff;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 8px;
    font-weight: 700;
    letter-spacing: 0;
}

h1,
h2,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 8px;
    font-size: 32px;
    line-height: 1.15;
}

h2 {
    margin-bottom: 8px;
    font-size: 20px;
}

.muted {
    color: var(--muted);
}

.alert {
    margin: 18px 0;
    padding: 12px 14px;
    color: var(--danger);
    background: var(--danger-bg);
    border: 1px solid #ffccc7;
    border-radius: 6px;
}

label {
    display: grid;
    gap: 8px;
    color: #344054;
    font-size: 14px;
    font-weight: 700;
}

input {
    width: 100%;
    min-height: 46px;
    padding: 11px 13px;
    color: var(--ink);
    background: #ffffff;
    border: 1px solid #c7d1df;
    border-radius: 6px;
    font: inherit;
}

input:focus {
    border-color: var(--primary);
    outline: 3px solid rgba(11, 107, 203, 0.16);
}

button,
.logout {
    display: inline-flex;
    min-height: 46px;
    align-items: center;
    justify-content: center;
    padding: 0 18px;
    border: 0;
    border-radius: 6px;
    color: #ffffff;
    background: var(--primary);
    font: inherit;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

button:hover,
.logout:hover {
    background: var(--primary-dark);
}

.login-form,
.search-form {
    display: grid;
    gap: 18px;
}

.dashboard {
    display: grid;
    gap: 22px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 26px 30px;
    background: #0f243f;
    border-radius: 8px;
    color: #ffffff;
    box-shadow: var(--shadow);
}

.topbar h1 {
    margin: 0;
}

.eyebrow {
    margin-bottom: 6px;
    color: #9fd8ce;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

.search-card,
.results {
    padding: 26px 30px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(23, 32, 51, 0.08);
}

.search-form {
    grid-template-columns: minmax(220px, 1fr) minmax(220px, 1fr) auto;
    align-items: end;
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: 8px;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 1060px;
}

th,
td {
    padding: 13px 14px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

th {
    color: #344054;
    background: #edf3fa;
    font-size: 13px;
    text-transform: uppercase;
}

tbody tr:nth-child(even) {
    background: #f8fbfe;
}

tbody tr:last-child td {
    border-bottom: 0;
}

.ssn-chip {
    display: inline-flex;
    min-width: 92px;
    justify-content: center;
    padding: 4px 8px;
    color: #07594c;
    background: #dff7f1;
    border-radius: 999px;
    font-weight: 700;
}

.empty-state {
    padding: 36px;
    text-align: center;
    color: var(--muted);
    background: #f8fbfe;
    border: 1px dashed #b8c7d9;
    border-radius: 8px;
}

.empty-state h2 {
    color: var(--ink);
}

@media (max-width: 760px) {
    .app-shell {
        width: min(100% - 20px, 1180px);
        padding: 18px 0;
    }

    .login-panel,
    .search-card,
    .results,
    .topbar {
        padding: 22px;
    }

    .topbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .search-form {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 27px;
    }
}