* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f6f7f9;
    color: #1f2933;
}

.login-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #eef1f5;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: #ffffff;
    padding: 32px;
    border-radius: 18px;
    box-shadow: 0 16px 40px rgba(31,41,51,.12);
}

.brand h1 {
    margin: 0;
    font-size: 34px;
    letter-spacing: .04em;
}

.brand p {
    margin-top: 6px;
    color: #667085;
}

label {
    display: block;
    margin: 18px 0 6px;
    font-weight: 600;
}

input, select, textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #d0d5dd;
    border-radius: 10px;
    font-size: 15px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.checkbox-label input {
    width: auto;
}

button, .button {
    display: inline-block;
    padding: 12px 16px;
    border: 0;
    border-radius: 10px;
    background: #27364a;
    color: #ffffff;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
}

.button.secondary {
    background: #eef1f5;
    color: #27364a;
    margin-left: 8px;
}

.login-card button {
    width: 100%;
    margin-top: 24px;
}

.alert, .success {
    margin: 18px 0;
    padding: 12px 14px;
    border-radius: 10px;
}

.alert {
    background: #fff1f1;
    color: #9b1c1c;
}

.success {
    background: #ecfdf3;
    color: #027a48;
}

.app-shell {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 270px;
    background: #1f2933;
    color: #ffffff;
    padding: 20px;
    flex-shrink: 0;
}

.sidebar-brand strong {
    display: block;
    font-size: 24px;
}

.sidebar-brand span {
    color: #cbd5e1;
    font-size: 13px;
}

.sidebar-nav {
    margin-top: 28px;
}

.sidebar a {
    display: block;
    color: #e5e7eb;
    text-decoration: none;
    padding: 10px 8px;
    border-radius: 8px;
    margin-bottom: 2px;
}

.sidebar a:hover,
.sidebar a.active {
    background: rgba(255,255,255,.12);
}

.sidebar hr {
    border: 0;
    border-top: 1px solid rgba(255,255,255,.14);
    margin: 16px 0;
}

.sidebar-section-title {
    color: #94a3b8;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .08em;
    margin: 8px 0;
}

.content {
    flex: 1;
    padding: 32px;
    min-width: 0;
}

.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    margin: 0 0 6px;
}

.page-header p {
    color: #667085;
}

.page-header-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(160px, 1fr));
    gap: 18px;
    margin-top: 28px;
}

.card,
.placeholder-card,
.table-card,
.form-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 22px;
    box-shadow: 0 8px 24px rgba(31,41,51,.08);
    margin-top: 24px;
}

.card h2 {
    margin: 0;
    font-size: 16px;
    color: #475467;
}

.metric {
    font-size: 38px;
    font-weight: 800;
    margin: 12px 0 0;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
    padding: 12px 10px;
    vertical-align: top;
}

th {
    color: #475467;
    font-size: 13px;
}

code {
    background: #f2f4f7;
    padding: 2px 6px;
    border-radius: 6px;
}

.pill {
    display: inline-block;
    background: #eef1f5;
    color: #344054;
    border-radius: 999px;
    padding: 4px 8px;
    margin: 2px;
    font-size: 12px;
}

.form-card {
    max-width: 720px;
}

@media (max-width: 900px) {
    .app-shell {
        display: block;
    }

    .sidebar {
        width: 100%;
    }

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

    .page-header-actions {
        display: block;
    }
}