/* ============================================
   NAVIGATION COMPONENT
   Bottom nav, tabs, and view switching
   ============================================ */

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    padding: var(--space-1) var(--space-2);
    display: none; /* Mobile only */
    justify-content: center;
    align-items: center;
    gap: var(--space-1);
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-lg);
}

@media (max-width: 767px) {
    .bottom-nav {
        display: flex;
    }
}

.bottom-nav__btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--space-2) var(--space-3);
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-size: var(--text-xs);
    cursor: pointer;
    min-width: 70px;
    min-height: 44px;
    border-radius: var(--radius-md);
    transition: all var(--duration-fast);
}

.bottom-nav__btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text);
}

.bottom-nav__btn--active {
    color: var(--color-accent);
    background: rgba(220, 38, 26, 0.1);
}

.bottom-nav__btn:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.bottom-nav__icon {
    font-size: 20px;
}

.bottom-nav__label {
    font-size: 10px;
    font-weight: 500;
}

/* View Tabs */
.view-tabs {
    display: flex;
    gap: 0;
    background: var(--color-bg-elevated);
    padding: var(--space-1);
    border-radius: var(--radius-md);
}

.view-tab {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--duration-fast);
}

.view-tab:hover {
    background: var(--color-bg-hover);
    color: var(--color-text);
}

.view-tab:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.view-tab.active {
    background: var(--color-accent);
    color: white;
}

/* Header Tabs */
.header__tabs {
    display: flex;
    gap: var(--space-1);
    margin-left: auto;
}

.header__tabs .view-tab {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-sm);
    font-weight: 500;
}

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

/* View Containers */
.view {
    display: none;
    flex: 1;
    flex-direction: column;
}

.view--active {
    display: flex;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-accent);
    color: white;
    padding: var(--space-2) var(--space-3);
    z-index: 1000;
    transition: top var(--duration-fast);
}

.skip-link:focus {
    top: 0;
}

/* Quick Exit Button */
.quick-exit-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 18px;
    cursor: pointer;
    transition: all var(--duration-fast);
    opacity: 0.6;
}

.quick-exit-btn:hover {
    opacity: 1;
    background: var(--color-bg-hover);
    border-color: var(--color-accent);
}

.quick-exit-btn:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Connection Status */
.connection-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.connection-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-success);
}

.connection-dot--offline {
    background: var(--color-danger);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}