:root {
    --primary-color: #1abc9c;
    --background-color: #0d1b24;
    --text-color: #ecf0f1;
    --container-background: #16232d;
    --input-background: #1c2b36;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.9);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Plus Jakarta Sans', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

body {
    font-family: inherit;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    border-radius: 10px;
    background-color: var(--container-background);
    box-shadow: var(--shadow);
}

h1 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 2.5rem;
    text-align: center;
}

.video-controls {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
    gap: 10px;
}

input[type="text"] {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    flex: 1;
    background-color: var(--input-background);
    color: var(--text-color);
}

button {
    padding: 12px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #16a085;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 8px;
    background-color: var(--background-color);
}

/* Responsive adjustments */
@media (min-width: 768px) {
    .video-controls {
        flex-direction: row;
    }

    h1 {
        font-size: 3rem;
    }
}

@media (min-width: 1200px) {
    .container {
        padding: 40px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }
}