* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    max-width: 400px;
    width: 100%;
    padding: 40px;
}

h1, h2 {
    color: #333;
    text-align: center;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

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

input[type="text"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e1e1;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn:active {
    transform: translateY(0);
}

.link-group {
    text-align: center;
    margin-top: 20px;
}

.link-group a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.link-group a:hover {
    text-decoration: underline;
}

.alert {
    padding: 12px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 14px;
}

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

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

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.dashboard-container {
    max-width: 800px;
    width: 100%;
}

.welcome-box {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    text-align: center;
}

.user-info {
    margin: 20px 0;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 5px;
}

.user-info p {
    margin: 10px 0;
    color: #555;
}

.logout-btn {
    margin-top: 20px;
    background: #dc3545;
    max-width: 200px;
    margin-left: auto;
    margin-right: auto;
}

.logout-btn:hover {
    background: #c82333;
    box-shadow: 0 5px 15px rgba(220, 53, 69, 0.4);
}