* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    background: #f4f4f4;
    color: #333;
}

.login-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f97316, #6b7280);
}

.login-container {
    width: 90%;
    max-width: 900px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.brand-box {
    background: #4b5563;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px;
}

.brand-box h1 {
    font-size: 42px;
    color: #f97316;
    margin-bottom: 10px;
}

.brand-box p {
    font-size: 18px;
    color: #e5e7eb;
}

.login-form {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-form h2 {
    margin-bottom: 25px;
    color: #374151;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #4b5563;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    outline: none;
}

.form-group input:focus {
    border-color: #f97316;
}

.btn-primary,
.btn-secondary,
.btn-download {
    display: inline-block;
    padding: 12px 18px;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}

.btn-primary {
    background: #f97316;
    color: white;
}

.btn-primary:hover {
    background: #ea580c;
}

.btn-secondary {
    background: #6b7280;
    color: white;
}

.btn-secondary:hover {
    background: #4b5563;
}

.btn-download {
    background: #f97316;
    color: #fff;
    padding: 8px 12px;
}

.btn-download:hover {
    background: #ea580c;
}

.topbar {
    background: #4b5563;
    color: white;
    padding: 20px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.topbar h1 {
    color: #f97316;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 30px auto;
}

.card {
    background: white;
    border-radius: 14px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.08);
}

.card h2 {
    margin-bottom: 18px;
    color: #374151;
}

.table-responsive {
    overflow-x: auto;
}

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

table thead {
    background: #f97316;
    color: white;
}

table th, table td {
    padding: 14px;
    border-bottom: 1px solid #e5e7eb;
    text-align: left;
}

.alert {
    padding: 12px;
    margin-bottom: 15px;
    border-radius: 8px;
    font-weight: bold;
}

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

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

input[type="file"] {
    margin-bottom: 15px;
}

@media (max-width: 768px) {
    .login-container {
        grid-template-columns: 1fr;
    }

    .topbar {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}