body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f4f6f9;
}

.hidden { display: none; }

.login-card {
    max-width: 400px;
    margin: 120px auto;
    padding: 30px;
    background: white;
    border-radius: 8px;
    text-align: center;
}

.login-card input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
}

.app {
    max-width: 1100px;
    margin: 30px auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toolbar {
    margin: 20px 0;
}

.toolbar input {
    padding: 8px;
    width: 250px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    margin-bottom: 20px;
}

.form-grid input {
    padding: 8px;
}

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

th {
    background: #e9ecef;
    padding: 10px;
}

td {
    padding: 10px;
    border-bottom: 1px solid #ddd;
}

button {
    padding: 6px 10px;
    background: #007bff;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    opacity: 0.9;
}

.dark {
    background: #1e1e1e;
    color: white;
}

.dark .app,
.dark .login-card {
    background: #2c2c2c;
}

.dark th {
    background: #444;
}

@media(max-width:900px){
    .form-grid{
        grid-template-columns: 1fr;
    }
}