* { box-sizing: border-box; }

:root {
    --md-sys-color-primary: #1f6feb;
    --md-sys-color-on-surface: #202124;
    --md-sys-color-surface: #ffffff;
    --md-sys-color-surface-dim: #eeeeee;
    --md-elevation-level: 1;
}

body { 
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin: 0; 
    padding: 40px; 
    font-family: 'Roboto', sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.window {
    width: 480px; 
    height: 600px;
    background: var(--md-sys-color-surface); 
    border-radius: 10px;
    overflow: hidden; 
    display: flex; 
    flex-direction: column;
    position: absolute;
    top: 40px;
    left: 50%;
    transform: translateX(-50%);
    transition: box-shadow 0.3s ease;
}

.window.dragging {
    transition: none;
}

.window md-elevation {
    position: absolute;
    border-radius: inherit;
}

.window:hover {
    --md-elevation-level: 2;
}

.title-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: auto;
    padding: 0px 0px 0px 16px;
    background: var(--md-sys-color-surface-dim);
    border-bottom: 1px solid #e0e0e0;
    cursor: move;
    user-select: none;
    -webkit-user-select: none;
    position: relative;
    z-index: 1;
}

.title-bar-left {
    display: flex;
    align-items: center;
    flex: 1;
}

.title-text {
    font-size: auto;
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
    letter-spacing: 0.25px;
}

.title-bar-right {
    display: flex;
    align-items: center;
}

md-icon-button {
    --md-icon-button-icon-size: 20px;
}

iframe { 
    flex: 1; 
    border: none;
    background: white;
}