/* Reset e estilos básicos */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Cabeçalho */
header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px 0;
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: white;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Formulário */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #444;
}

input[type="text"],
input[type="range"],
textarea,
select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.3s;
}

input[type="text"]:focus,
input[type="range"]:focus,
textarea:focus,
select:focus {
    border-color: #2575fc;
    outline: none;
    box-shadow: 0 0 0 2px rgba(37, 117, 252, 0.2);
}

input[type="file"] {
    padding: 10px 0;
}

small {
    display: block;
    margin-top: 5px;
    color: #777;
    font-size: 0.9rem;
}

#duracaoValue {
    display: inline-block;
    margin-left: 10px;
    font-weight: 600;
    color: #2575fc;
}

/* Botões */
.btn-primary, .btn-secondary, .btn-download {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 117, 252, 0.3);
}

.btn-secondary {
    background-color: #e0e0e0;
    color: #333;
}

.btn-secondary:hover {
    background-color: #d0d0d0;
}

.btn-download {
    background: linear-gradient(135deg, #00b09b 0%, #96c93d 100%);
    color: white;
    padding: 15px 30px;
    font-size: 18px;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 176, 155, 0.3);
}

/* Prévia do vídeo */
.preview-container {
    display: flex;
    gap: 30px;
    margin: 30px 0;
    flex-wrap: wrap;
}

.video-preview {
    flex: 1;
    min-width: 300px;
}

.video-placeholder {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.video-header {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: white;
    padding: 15px 20px;
}

.video-header h2 {
    font-size: 1.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.video-content {
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f0f0f0;
    position: relative;
    overflow: hidden;
}

.placeholder-text {
    text-align: center;
    padding: 20px;
}

.placeholder-text p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: #666;
}

.placeholder-icon {
    font-size: 5rem;
    opacity: 0.3;
}

.slideshow {
    width: 100%;
    height: 100%;
}

.slide {
    display: none;
    width: 100%;
    height: 100%;
}

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

.video-footer {
    padding: 15px;
    background-color: #f8f9fa;
}

.progress-bar {
    height: 8px;
    background-color: #e0e0e0;
    border-radius