/* Main App Shell Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    background: var(--bg-primary);
}

/* ── TOP HEADER BAR ────────────────────────────────────────── */
.top-header {
    height: 60px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    flex-shrink: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.brand-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
}

.brand-logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

.brand-name {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.header-divider-v {
    width: 1px;
    height: 20px;
    background: var(--border-color);
    margin: 0 4px;
}

.header-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

.bc-item {
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
    white-space: nowrap;
}

.bc-item:hover {
    color: var(--text-primary);
}

.bc-sep {
    color: var(--border-color);
    user-select: none;
}

.bc-project-selector,
.bc-branch-selector {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: background 0.2s;
}

.bc-project-selector:hover,
.bc-branch-selector:hover {
    background: var(--hover-bg);
}

.header-connect-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.header-connect-btn:hover {
    background: var(--hover-bg);
    border-color: rgba(255, 255, 255, 0.2);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-link {
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.header-link:hover {
    color: var(--text-primary);
}

.header-search {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 10px;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: text;
    width: 180px;
    transition: border-color 0.2s;
}

.header-search:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.search-key {
    margin-left: auto;
    font-size: 10px;
    background: var(--bg-tertiary);
    padding: 1px 4px;
    border-radius: 3px;
    border: 1px solid var(--border-color);
}

.header-icons {
    display: flex;
    align-items: center;
    gap: 8px;
}

.h-icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.h-icon-btn:hover {
    color: var(--text-primary);
    background: var(--hover-bg);
}

.header-user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent-primary);
    color: #ffffff;
    font-size: 11px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.1);
}

/* ── BODY WORKSPACE (Sidebar + Content) ────────────────────── */
.app-body {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
    min-height: 0;
    height: 100%;
}

/* Primary Left Navigation Sidebar */
.primary-sidebar {
    width: 230px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width 0.25s ease, transform 0.25s ease;
    z-index: 90;
}

.primary-sidebar.collapsed {
    width: 0;
    transform: translateX(-100%);
    overflow: hidden;
    border-right: none;
}

.sidebar-project-header {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sidebar-back-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 12px;
    text-decoration: none;
    cursor: pointer;
    transition: color 0.2s;
}

.sidebar-back-link:hover {
    color: var(--text-primary);
}

.sidebar-project-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.project-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-primary);
    box-shadow: 0 0 6px var(--accent-primary);
    flex-shrink: 0;
}

.sidebar-project-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-account-email {
    font-size: 11px;
    color: var(--text-secondary);
    padding-left: 16px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 10px 8px;
    overflow: hidden;
}

.sidebar-scroll-items {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-right: 2px;
}

.sidebar-footer-nav {
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
}

.sidebar-footer-nav .nav-item.active {
    background: rgba(0, 161, 132, 0.12);
    color: var(--accent-primary);
    font-weight: 600;
}

/* Viewport for main view (Project Settings) */
.view-viewport {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    background: var(--bg-primary);
    min-height: 0;
    height: 100%;
    width: 100%;
}