* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, Arial, Helvetica, sans-serif;
    background: #f4f6f8;
    color: #1f2933;
}

a {
    color: #1259c3;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

h1, h2 {
    margin: 0 0 8px;
}

.muted {
    margin-top: 0;
    color: #667085;
}

.center {
    text-align: center;
}

.green {
    color: #249447;
}

/* topbar */

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: #101828;
    color: #fff;
}

.brand {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
}

.topbar nav {
    display: flex;
    align-items: center;
    gap: 16px;
}

.topbar nav a,
.link-button {
    color: #fff;
}

.link-button {
    padding: 0;
    background: none;
    border: 0;
    font: inherit;
    cursor: pointer;
}

/* container */

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 20px;
}

.narrow {
    max-width: 420px;
    margin: 40px auto;
}

/* card */

.card {
    padding: 24px;
    background: #fff;
    border: 1px solid #d8dee6;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(16, 24, 40, 0.06);
}

/* layout helpers */

.page-title,
.section-heading,
.actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.page-title {
    margin-bottom: 20px;
}

.grid.two {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.item {
    display: grid;
    gap: 6px;
    padding: 14px 0;
    border-top: 1px solid #e5e7eb;
}

/* forms */

.form {
    display: grid;
    gap: 16px;
}

label {
    display: grid;
    gap: 6px;
    font-weight: 700;
}

input {
    padding: 11px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font: inherit;
}

button,
.button {
    display: inline-block;
    padding: 11px 16px;
    background: #1259c3;
    border: 0;
    border-radius: 8px;
    font: inherit;
    font-weight: 700;
    color: #fff;
    cursor: pointer;
}

.secondary {
    background: #eef4ff;
    color: #1259c3;
}

/* table */

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

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

/* status */

.status {
    display: inline-block;
    padding: 6px 10px;
    background: #e5e7eb;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

.status.sent,
.status.completed {
    background: #dcfce7;
    color: #166534;
}

.status.error {
    background: #fee2e2;
    color: #991b1b;
}

.status.draft,
.status.pending {
    background: #fef3c7;
    color: #92400e;
}

/* alerts */

.alert {
    padding: 12px 14px;
    border-radius: 8px;
    margin-bottom: 16px;
}

.alert.success {
    background: #dcfce7;
    color: #166534;
}

.alert.error {
    background: #fee2e2;
    color: #991b1b;
}