/* Navigation Bar */
.navigation-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border-color);
    min-height: 50px;
    position: relative;
    z-index: 1;
}

.navigation-bar .nav-back-button {
    background: none;
    border: none;
    color: var(--accent-color);
    font-size: 16px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 6px;
    transition: background-color 0.2s;
}

.navigation-bar .nav-back-button:hover {
    background: rgba(0, 122, 255, 0.1);
}

.navigation-bar .nav-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    flex: 1;
    text-align: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.navigation-bar .nav-spacer {
    width: 64px;
}

.navigation-bar .nav-button {
    background: none;
    border: none;
    color: var(--accent-color);
    font-size: 24px;
    padding: 8px 12px;
    cursor: pointer;
    transition: opacity 0.2s;
    position: relative;
    z-index: 2;
}

.navigation-bar .nav-button:hover {
    opacity: 0.8;
}

.navigation-bar .nav-button:active {
    opacity: 0.6;
}

.navigation-bar .nav-button.add-button {
    font-size: 28px;
    font-weight: 300;
    line-height: 1;
    color: var(--accent-color);
}