* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.login-container {
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    padding: 40px;
    width: 100%;
    max-width: 500px;
    transition: all 0.3s ease;
}

h1 {
    color: #333;
    text-align: center;
    margin-bottom: 30px;
    font-weight: 600;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.logo i {
    font-size: 40px;
    color: #2575fc;
    margin-right: 10px;
}

.form-group {
    font-size: 16px;
    font-weight: bold;
    width: 100%;
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border 0.3s;
}

input:focus {
    border-color: #2575fc;
    outline: none;
}

.btn {
    background: linear-gradient(to right, #2575fc, #6a11cb);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    width: 100%;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}


.message {
    padding: 12px;
    margin: 15px 0;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
}

.message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.demo-info {
    text-align: center;
    margin-top: 20px;
    color: #666;
    cursor: pointer;
    padding: 10px;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.demo-info:hover {
    background-color: #f8f9fa;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}