* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f5f5;
}

/* Barra superior dorada */
.top-bar {
    background: #b89b27;
    color: #fff;
    text-align: center;
    padding: 8px 20px;
    font-size: 14px;
    letter-spacing: 0.5px;
}

/* Header principal blanco */
.header {
    background: #fff;
    padding: 16px 30px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #e0e0e0;
    height: 70px;
}

.header .logo {
    text-decoration: none;
    line-height: 1;
    flex-shrink: 0;
}

.header .logo img {
    height: 40px;
    width: auto;
}

.header nav {
    display: flex;
    align-items: center;
    gap: 28px;
    flex: 1;
    justify-content: center;
}

.header nav a {
    color: #333;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

.header nav a:hover,
.header nav a.active {
    color: #b89b27;
}

.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    min-width: 200px;
    z-index: 100;
    padding: 6px 0;
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu a {
    display: block;
    padding: 8px 16px;
    white-space: nowrap;
}

.dropdown-menu a:hover {
    background: #f5f5f5;
}

.header .back-link {
    color: #666;
    text-decoration: none;
    font-size: 14px;
    margin-left: auto;
    transition: color 0.2s;
}

.header .back-link:hover {
    color: #b89b27;
}

.iframe-container {
    width: 100%;
    height: calc(100vh - 105px);
}

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