body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
}

.presentation-container {
    background: white;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.content-box {
    width: 100%;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.content-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.content-box iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.placeholder {
    color: white;
    font-size: 24px;
    font-weight: bold;
}

.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: white;
}

.caption {
    flex: 1;
    text-align: center;
    font-size: 30px;
    color: #333;
    margin: 0 20px;
}

.nav-button {
    background: #333;
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.nav-button:hover {
    background: #555;
}

.nav-button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.slide-counter {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 14px;
}

.external-link {
    display: inline-block;
    padding: 15px 30px;
    background-color: #333;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 18px;
    transition: background-color 0.3s;
}

.external-link:hover {
    background-color: #555;
}

.instagram-container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.instagram-container iframe {
    border: none;
    width: 100%;
    min-height: 450px;
}

.figma-link {
    background-color: #1abcfe !important;
}

.figma-link:hover {
    background-color: #0098e1 !important;
}

.url-display {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-family: monospace;
    max-width: 90%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    z-index: 1000;
}