/* Authentication Styles */
.header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, #2c3e50, #3498db);
    color: white;
    padding: 20px 30px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.auth-buttons {
    display: flex;
    gap: 10px;
}

.auth-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.auth-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.register-btn {
    background: #27ae60;
    border-color: #27ae60;
}

.logout-btn {
    background: #e74c3c;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: white;
    margin: 10% auto;
    padding: 30px;
    border-radius: 10px;
    width: 90%;
    max-width: 400px;
    position: relative;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 15px;
    top: 15px;
}

.close:hover {
    color: #000;
}

.message {
    margin-top: 15px;
    padding: 10px;
    border-radius: 5px;
    display: none;
}

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

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f1b0b7;
}

/* Welcome Message */
.welcome-message {
    text-align: center;
    padding: 50px 30px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    border-left: 4px solid #3498db;
}

.feature h3 {
    color: #2c3e50;
    margin-bottom: 10px;
}

/* Main Content */
.main-content {
    padding: 30px;
}