:root {
    --md-sys-color-primary: #6750A4;
    --md-sys-color-on-primary: #FFFFFF;
    --md-sys-color-surface: #FEF7FF;
    --md-sys-color-surface-variant: #E7E0EC;
    --md-sys-color-on-surface: #1D1B20;
    --md-sys-color-on-surface-variant: #49454F;
    --md-sys-color-outline: #79747E;
}
body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    margin: 0;
    padding: 0;
}
* {
    transition: none !important;
    animation: none !important;
}
.header {
    background-color: var(--md-sys-color-surface-variant);
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--md-sys-color-outline);
}
.logo img {
    max-height: 40px;
    display: block;
}
.logo span {
    font-size: 22px;
    font-weight: 500;
}
.container {
    display: flex;
    padding: 24px;
    gap: 24px;
}
.sidebar {
    width: 256px;
    background: var(--md-sys-color-surface-variant);
    border-radius: 16px;
    padding: 12px;
}
.main-content {
    flex: 1;
    background: #ffffff;
    border: 1px solid var(--md-sys-color-outline);
    border-radius: 16px;
    padding: 24px;
}
.md-btn {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    border: none;
    padding: 10px 24px;
    border-radius: 100px;
    font-weight: 500;
    cursor: pointer;
}
.md-input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--md-sys-color-outline);
    border-radius: 4px;
    background: transparent;
    box-sizing: border-box;
    margin-bottom: 16px;
}
.mail-item {
    padding: 16px;
    border-bottom: 1px solid var(--md-sys-color-surface-variant);
    cursor: pointer;
}