#mainHeader {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

#mainHeader.hidden {
    display: none;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-left h1 {
    font-size: 2rem;
    color: var(--accent-blue);
}

.header-left h1.clickable {
    cursor: pointer;
}

.header-left h1.clickable:hover {
    opacity: 0.8;
}

#breadcrumb {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#usernameDisplay {
    cursor: pointer;
}

#usernameDisplay:hover {
    color: var(--accent-blue);
}

.role-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 600;
    border: none;
    color: #fff;
}

.role-badge.admin { 
    background: var(--accent-red); 
    cursor: pointer;
}
.role-badge.admin:hover {
    background: #f85149;
}
.role-badge.mod { background: var(--accent-yellow); color: #000; cursor: default; }
.role-badge.user { background: var(--accent-green); cursor: default; }

#projectsSection {
    padding: 2rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.section-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

#boardSection {
    padding: 1rem 2rem;
}

.board-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.board-header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.board-header-left h2 {
    color: var(--text-primary);
}

.board-header-center {
    text-align: center;
}

.sprint-dates {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.sprint-dates .date-start,
.sprint-dates .date-end {
    color: var(--accent-blue);
}

.sprint-dates .date-arrow {
    color: var(--text-secondary);
    margin: 0 0.75rem;
    font-size: 0.8rem;
}

.sprint-dates .sprint-points {
    margin-left: 1rem;
    padding: 0.2rem 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.board-header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.board-tabs {
    display: flex;
    gap: 0.25rem;
}

.board-tab {
    padding: 0.5rem 1rem;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
}

.board-tab.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.sprint-goal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent-blue);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: border-color 0.2s;
}

.sprint-goal:hover {
    border-color: var(--accent-blue);
}

.sprint-goal strong {
    color: var(--text-primary);
}

.sprint-goal-placeholder {
    color: var(--text-muted);
    font-style: italic;
}

.sprint-goal.read-only {
    cursor: default;
}

.sprint-goal.read-only:hover {
    border-color: var(--border-color);
}