body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0f1115;
    color: #ececec;
}
.container {
    width: 90%;
    max-width: 980px;
    margin: 0 auto;
}
.topbar {
    background: #161a22;
    border-bottom: 1px solid #333;
}
.topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
}
.brand {
    color: #ffc857;
    text-decoration: none;
    font-weight: 700;
}
nav a {
    color: #fff;
    margin-left: 14px;
    text-decoration: none;
}
.card {
    background: #1a1f2b;
    border: 1px solid #2d3445;
    border-radius: 10px;
    padding: 18px;
    margin: 20px 0;
}
label {
    display: block;
    margin-bottom: 12px;
}
input, select, textarea {
    width: 100%;
    padding: 10px;
    margin-top: 6px;
    background: #0f1115;
    color: #fff;
    border: 1px solid #3a4358;
    border-radius: 6px;
}
.btn {
    display: inline-block;
    background: #ffc857;
    color: #000;
    border: 0;
    border-radius: 6px;
    padding: 10px 14px;
    text-decoration: none;
    cursor: pointer;
}
.btn.secondary {
    background: #8db3ff;
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    border: 1px solid #31384a;
    padding: 8px;
    text-align: left;
}
.flash {
    padding: 10px 12px;
    border-radius: 6px;
    margin-top: 16px;
}
.flash.success {
    background: #224d2f;
}
.flash.error {
    background: #6d1f2b;
}
.reading-text {
    white-space: normal;
    line-height: 1.65;
    margin-top: 18px;
}
.prices {
    display: flex;
    gap: 12px;
}
.price-box {
    flex: 1;
    border: 1px solid #3a4358;
    border-radius: 8px;
    padding: 12px;
}