body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f8ff;
    color: #00008b;
}

#app {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

#header {
    text-align: center;
    margin-bottom: 20px;
    border-bottom: 2px solid #add8e6;
    padding-bottom: 10px;
}

.title-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 15px;
}

.header-icon {
    width: 32px;
    height: 32px;
}

h1 {
    color: #00008b;
    margin: 0;
}

#controls {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

button {
    background-color: #add8e6;
    color: #00008b;
    border: 1px solid #00008b;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}

button:hover {
    background-color: #87ceeb;
}

.list {
    list-style-type: none;
    padding: 0;
}

.list-item {
    background-color: white;
    margin-bottom: 10px;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 139, 0.1);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.list-item:hover {
    background-color: #e6f2ff;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
}

.modal-content {
    background-color: #f0f8ff;
    margin: 15% auto;
    padding: 20px;
    border: 1px solid #00008b;
    width: 80%;
    max-width: 500px;
    border-radius: 5px;
    position: relative;
}

.close {
    color: #00008b;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: #87ceeb;
}

input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #00008b;
    border-radius: 5px;
    box-sizing: border-box;
}

#videoContainer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: black;
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
}

#videoPlayer {
    width: 100%;
    height: 100%;
    max-width: 1000px;
    max-height: 600px;
}

.delete-icon {
    color: #ff0000;
    cursor: pointer;
    margin-left: 10px;
}

@media (min-width: 768px) {
    .header-icon {
        width: 48px;
        height: 48px;
    }
}