/* Viewer CSS */
body {
    background-color: #f0f2f5;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.viewer-input-container {
    max-width: 400px;
    width: 90%;
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}

.viewer-header {
    text-align: center;
    margin-bottom: 2rem;
}

.viewer-header h1 {
    font-size: 1.5rem;
    color: #333;
    font-weight: 600;
}

.token-input {
    font-size: 1.2rem;
    letter-spacing: 2px;
    text-align: center;
}

.btn-access {
    width: 100%;
    padding: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Specific Material Page */
.material-info {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

.material-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.material-meta {
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* PDF Viewer */
.pdf-container {
    width: 100%;
    height: 100vh;
    background: #525659;
    overflow: hidden;
}

.pdf-toolbar {
    background: #323639;
    color: white;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 50px;
}

/* HTML Sandbox */
.html-sandbox {
    width: 100%;
    height: 100vh;
    border: none;
    background: white;
}