* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    width: 100%;
    height: 100%;
    font-family: Arial, Helvetica, sans-serif;
    background: #f4f7fb;
}

.login-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
}

.login-card {
    width: 100%;
    max-width: 390px;
    background: #ffffff;
    padding: 38px 34px;
    border-radius: 18px;
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.12);
    text-align: center;
}

.logo {
    max-width: 260px;
    margin-bottom: 28px;
}

h1 {
    margin: 0 0 8px;
    font-size: 24px;
    color: #183b68;
}

.subtitle {
    margin: 0 0 24px;
    color: #6b7280;
    font-size: 14px;
}

.form-group {
    margin-bottom: 16px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: #374151;
    font-size: 14px;
    font-weight: bold;
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    font-size: 15px;
    outline: none;
}

.form-group input:focus {
    border-color: #183b68;
}

button {
    width: 100%;
    padding: 13px;
    margin-top: 8px;
    border: none;
    border-radius: 10px;
    background: #183b68;
    color: #ffffff;
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
}

button:hover {
    background: #102a4c;
}

.error {
    margin-bottom: 16px;
    padding: 10px;
    border-radius: 8px;
    background: #fee2e2;
    color: #991b1b;
    font-size: 14px;
}

iframe {
    width: 100%;
    height: 100vh;
    border: none;
}

.logout-btn {
    position: fixed;
    top: 14px;
    right: 14px;
    z-index: 10;
    padding: 9px 14px;
    border-radius: 8px;
    background: #183b68;
    color: #ffffff;
    text-decoration: none;
    font-size: 13px;
    font-weight: bold;
}

.logout-btn:hover {
    background: #102a4c;
}