/* Main Navigation Styles */
.main-nav {
    background-color: var(--primary-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 64px; /* Height of the top app bar */
    z-index: 98;
}

.main-nav .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Material Design Tab Bar Styles */
.mdc-tab-bar {
    width: 100%;
    background-color: var(--primary-color);
}

.mdc-tab {
    height: 56px;
    padding: 0 12px;
    color: var(--on-primary);
    --mdc-theme-primary: white; /* This sets the indicator color */
    opacity: 0.8;
    transition: opacity 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

.mdc-tab--active {
    opacity: 1;
}

.mdc-tab:hover {
    opacity: 1;
    background-color: rgba(255, 255, 255, 0.04);
}

.mdc-tab__content {
    justify-content: center;
}

.mdc-tab__icon {
    margin-right: 8px;
}

.mdc-tab__text-label {
    color: inherit;
}

.mdc-tab--donate {
    background-color: var(--secondary-color);
    border-radius: 4px;
    margin: 8px 4px;
    height: 40px;
    color: var(--on-secondary);
    opacity: 1;
}

.mdc-tab--donate .mdc-tab__text-label {
    font-weight: 500;
}

.mdc-tab--donate:hover {
    background-color: var(--secondary-dark);
}

/* Adjust indicator for donate tab */
.mdc-tab--donate .mdc-tab-indicator__content--underline {
    display: none;
}

/* Material Design Drawer Customizations */
.mdc-drawer {
    width: 280px;
    border-radius: 0;
}

.mdc-drawer__header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 16px 16px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.12);
}

.mdc-drawer__title {
    margin: 0;
    color: var(--primary-color);
    font-size: 20px;
    font-weight: 500;
}

.mdc-drawer__subtitle {
    margin: 4px 0 0;
    color: var(--on-surface);
    opacity: 0.6;
    font-size: 14px;
    font-weight: 400;
}

.mdc-drawer .mdc-list-item--highlighted {
    background-color: var(--secondary-color);
    color: var(--on-secondary);
    margin: 8px 16px;
    border-radius: 4px;
}

.mdc-drawer .mdc-list-item--highlighted .mdc-list-item__text,
.mdc-drawer .mdc-list-item--highlighted .mdc-list-item__graphic {
    color: var(--on-secondary);
}

.mdc-drawer .mdc-list-item--activated {
    background-color: rgba(33, 150, 243, 0.12);
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }
}