* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(135deg, #eef2ff, #f8fafc);
    color: #1f2937;
}

.container {
    max-width: 900px;
    margin: 40px auto;
    padding: 24px;
}

.card {
    background: #ffffff;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
    padding: 24px;
    margin-bottom: 20px;
}

h1, h2 {
    margin-top: 0;
    color: #111827;
}

p {
    line-height: 1.6;
}

a.button, button, input[type="submit"] {
    display: inline-block;
    padding: 12px 18px;
    border: none;
    border-radius: 12px;
    background: #2563eb;
    color: white;
    text-decoration: none;
    cursor: pointer;
    font-size: 15px;
    transition: 0.2s ease;
}

a.button:hover, button:hover, input[type="submit"]:hover {
    background: #1d4ed8;
}

input[type="text"],
select,
textarea {
    width: 100%;
    padding: 12px 14px;
    margin-top: 8px;
    margin-bottom: 16px;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    outline: none;
    font-size: 15px;
    background: #fff;
}

textarea {
    min-height: 140px;
    resize: vertical;
}

label {
    font-weight: 600;
}

.nav {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}

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

.table th {
    background: #f8fafc;
}

.muted {
    color: #6b7280;
}