/* Layout - Sidebar and Main Content */

/* Site Header - Top-level tab bar */
.site-header {
    display: flex;
    align-items: center;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 var(--spacing-lg);
    padding-left: 80px;
    height: 52px;
    flex-shrink: 0;
    --wails-draggable: drag;
}

.site-header-leading {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-right: var(--spacing-sm);
    padding-left: var(--spacing-sm);
}

.site-header-tab,
.site-header-tab-add,
.site-header-actions button,
.site-header-leading button {
    --wails-draggable: no-drag;
}

.site-header-tabs {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex: 1;
    overflow-x: auto;
}

.site-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-left: auto;
}

.site-header-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background var(--transition-fast);
    white-space: nowrap;
    color: var(--text-secondary);
}

.site-header-tab:hover {
    background: var(--color-primary-hover);
}

.site-header-tab.active {
    background: rgba(var(--color-primary-rgb), 0.15);
    color: var(--color-primary);
}

.site-header-tab-icon {
    width: 16px;
    height: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.site-header-tab-name {
    font-size: var(--font-size-md);
    font-weight: 500;
}

.site-header-tab-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    padding: 0 4px;
    margin-left: var(--spacing-xs);
    opacity: 0;
    transition: opacity var(--transition-fast), color var(--transition-fast);
}

.site-header-tab:hover .site-header-tab-close {
    opacity: 1;
}

.site-header-tab-close:hover {
    color: var(--color-error);
}

.site-header-tab-add {
    background: transparent;
    border: 1px dashed var(--border-color);
    color: var(--text-muted);
    font-size: 1.2rem;
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.site-header-tab-add:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h1 {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.sidebar-header p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.sidebar-site-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    padding: 0.5rem 0.75rem;
    margin: -0.5rem -0.75rem;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.sidebar-site-link:hover {
    background: var(--color-primary-hover);
}

.sidebar-site-link.active {
    background: rgba(var(--color-primary-rgb), 0.15);
}

.sidebar-site-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
}

.sidebar-site-arrow {
    color: var(--text-muted);
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.sidebar-site-link:hover .sidebar-site-arrow,
.sidebar-site-link.active .sidebar-site-arrow {
    color: var(--color-primary);
}

.sidebar-site-link.active .sidebar-site-arrow {
    transform: rotate(90deg);
}

/* Update Check Button */
.update-check-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.update-check-btn:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.update-check-btn.checking {
    color: var(--color-primary);
}

.update-check-btn.has-update {
    color: var(--color-success);
}


.update-check-btn .spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Settings + Docs Header Buttons */
.settings-header-btn,
.docs-header-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast), background var(--transition-fast);
}

.settings-header-btn:hover,
.docs-header-btn:hover {
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.1);
}

.simulator-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

/* Category Sections */
.category-section {
    margin-bottom: var(--spacing-md);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(var(--color-primary-rgb), 0.05);
    border-radius: var(--radius-lg);
    cursor: pointer;
    margin-bottom: 0.35rem;
}

.category-header:hover {
    background: var(--color-primary-hover);
}

.category-icon {
    width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.category-name {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-count {
    font-size: 0.65rem;
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.1);
    padding: 0.1rem 0.4rem;
    border-radius: 10px;
    margin-left: auto;
}

.category-items {
    padding-left: var(--spacing-sm);
}

.category-items.collapsed {
    display: none;
}

/* Simulator Item */
.sim-item {
    position: relative;
    padding: 0.5rem 0.6rem;
    border-radius: var(--radius-lg);
    cursor: pointer;
    margin-bottom: 0.35rem;
    transition: background var(--transition-fast);
    border: 1px solid transparent;
}

.sim-item:hover { background: var(--color-primary-hover); }
.sim-item.active { background: var(--color-primary-active); border-color: var(--color-primary); }

.sim-title-row {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.sim-category-icon {
    flex-shrink: 0;
    color: var(--text-secondary);
}

.sim-serial { font-size: 0.7rem; font-weight: 600; color: var(--text-primary); flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.sim-address {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-primary);
    margin-top: 2px;
    padding-left: calc(14px + 0.35rem); /* align with serial (icon width + gap) */
}

.sim-item.device-off .sim-address {
    color: var(--text-muted);
}

.sim-port-unassigned { color: var(--text-muted); font-style: italic; font-family: inherit; }

/* Sidebar Add Device */
.sidebar-add-device {
    padding: 0.35rem 0.5rem;
}

.sidebar-add-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    width: 100%;
    padding: 0.45rem;
    background: transparent;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sidebar-add-btn:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.05);
}

.sim-mode {
    display: inline-block;
    padding: 0.1rem 0.35rem;
    border-radius: var(--radius-sm);
    font-size: 0.6rem;
    font-weight: 600;
}
.sim-mode.auto { background: rgba(var(--color-success-rgb), 0.2); color: var(--color-success); }
.sim-mode.static { background: rgba(100, 100, 100, 0.2); color: var(--text-muted); }

/* Sidebar Toggle (kept for potential reuse) */

/* Delete Button */
.sim-delete {
    position: absolute;
    bottom: 0.4rem;
    right: 0.4rem;
    width: 20px;
    height: 20px;
    padding: 0;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.75rem;
    line-height: 1;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.sim-item:hover .sim-delete {
    opacity: 1;
}

.sim-delete:hover {
    color: var(--color-error);
    background: rgba(var(--color-error-rgb), 0.15);
}

/* Add Simulator Button */
.add-simulator-btn {
    width: 100%;
    padding: 0.6rem;
    margin-top: var(--spacing-sm);
    background: rgba(var(--color-primary-rgb), 0.1);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
    font-size: var(--font-size-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.add-simulator-btn:hover {
    background: var(--color-primary-active);
    border-style: solid;
}

/* Add Menu */
.add-menu {
    display: none;
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-sm);
}

.add-menu.show {
    display: block;
}

.add-menu-title {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
}

.add-menu-btn {
    display: block;
    width: 100%;
    padding: var(--spacing-sm);
    margin-bottom: 0.35rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-md);
    cursor: pointer;
    text-align: left;
    transition: all var(--transition-fast);
}

.add-menu-btn:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary);
}

.add-menu-btn:last-child {
    margin-bottom: 0;
}

/* Empty Simulator State */
.no-simulators {
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-size-md);
}

/* Main Content */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Config Row */
.config-row {
    display: flex;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    background: var(--bg-secondary);
    padding: 0.75rem var(--spacing-lg);
    border-radius: var(--radius-xl);
    align-items: center;
}

.config-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.config-item label {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.config-item input, .config-item select {
    padding: 0.4rem 0.6rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    min-width: 120px;
    height: 32px;
    box-sizing: border-box;
}

.config-item .value {
    font-size: 0.9rem;
    color: var(--color-primary);
    height: 32px;
    display: flex;
    align-items: center;
}

.config-item .value.live {
    min-width: 120px;
    padding: 0 0.6rem;
}

.config-item .value.readonly {
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0 var(--spacing-sm);
    color: var(--text-secondary);
    min-width: 80px;
}

.config-item .host-ip {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-primary);
}

/* Automation Row */
.auto-row {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
    background: var(--bg-secondary);
    padding: 0.75rem var(--spacing-lg);
    border-radius: var(--radius-xl);
    flex-wrap: wrap;
}