.hidden{
    display: none;
}

.background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center; 
    background-repeat: no-repeat;
    z-index: -1;
}

.top{
    position: absolute;
    top: 20px;
    right: 30px;
    display: flex;
    flex-direction: column;
    color: white;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    border-radius: 20px;
    padding: 10px;
    text-align: center;
    gap: 15px;
    z-index: 10;
}

#weather-container{
    cursor: pointer;
}

.welcome{
    position: absolute;
    top: 10%;
    left: 0;
    right: 0;
    margin: 0 auto;
    width: 70%;
    color: white;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    border-radius: 20px;
    padding: 10px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    font-family: 'sexy-font';
    font-size: 18px;
    font-weight: 400;
}

.welcome input {
    padding: 15px;
    border: none;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    font-family: inherit;
    font-size: 18px;
    font-weight: 400;
}

.welcome input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.welcome input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.3);
}

.welcome button {
    padding: 15px 25px;
    border: none;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    font-family: inherit;
    font-size: 18px;
    font-weight: 400;
}

.welcome #greeting{
    font-family: inherit;
    font-size: 48px;
    font-weight: 700;
}

.bottom{
    position: absolute;
    bottom: 30px;
    left: 0;
    right: 0;
    margin: 0 auto;
    width: 80%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 25px;
    padding: 20px 30px;
    text-align: center;
    color: white;
    max-width: 600px;
    width: 90%;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.todo {
    position: absolute;
    top: 30%;
    left: 0;
    right: 0;
    margin: 0 auto;        
    width: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    border-radius: 25px;
    padding: 25px;
    min-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    color: white;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    font-family: 'sexy-font';
    font-size: 18px;
    font-weight: 400;
}

.todo input {
    padding: 15px;
    border: none;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    width: 100%;
    box-sizing: border-box; 
    font-family: inherit;        
    font-size: 18px;            
    font-weight: 400;            
}

.todo input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.todo input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.3);
}

#todo-list {
    max-height: 200px;
    overflow-y: auto;
    padding-left: 0;         
    margin: 0;  

    /* 스크롤바 숨기기 */
    scrollbar-width: none;        /* Firefox */
    -ms-overflow-style: none;     /* IE/Edge */
}

#todo-list li {
    background: rgba(255, 255, 255, 0.15);
    margin: 8px 0;
    padding: 12px;
    border-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;     
    font-family: inherit;
    font-size: 18px;            
    font-weight: 400;            
}

#todo-list li .delete-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 8px;
    padding: 8px 12px;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}