/* ====================================================================
   WINDOW CONTAINER - No header, managed by window manager
   ==================================================================== */
.io-window {
    width: 900px;
    height: 600px;
    background: var(--io-surface-raised);
    display: flex;
    overflow: hidden;
}

/* ====================================================================
   SIDEBAR TABS
   ==================================================================== */
.io-tabs-sidebar {
    width: 180px;
    background: var(--io-surface-sunken);
    display: flex;
    flex-direction: column;
    padding: var(--io-space-md) var(--io-space-sm);
    gap: 2px;
    flex-shrink: 0;
}

.io-tab {
    padding: 10px 12px;
    background: transparent;
    border-left: 2px solid transparent;
    color: var(--io-text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: var(--io-text-sm);
    transition: all var(--io-transition-base);
    position: relative;
    letter-spacing: 0.02em;
}

.io-tab i {
    font-size: 12px;
    width: 16px;
    text-align: center;
    transition: all var(--io-transition-fast);
    opacity: 0.6;
}

.io-tab-label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-transform: lowercase;
}

/* Hover state */
.io-tab:hover {
    color: var(--io-text-secondary);
    background: rgba(255, 255, 255, 0.02);
}

.io-tab:hover i {
    opacity: 0.8;
}

/* Active state */
.io-tab.active {
    color: var(--io-text-primary);
    border-left-color: var(--io-accent);
}

.io-tab.active i {
    color: var(--io-accent);
    opacity: 1;
}

/* Subtle glow on active tab */
.io-tab.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--io-accent);
    box-shadow: 0 0 8px var(--io-accent-glow);
}

/* ====================================================================
   CONTENT AREA
   ==================================================================== */
.io-tab-content {
    flex: 1;
    background: var(--io-surface-base);
    padding: var(--io-space-xl);
    overflow-y: auto;
}

.io-tab-panel {
    display: none;
    animation: fadeIn 250ms ease;
}

.io-tab-panel.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ====================================================================
   CONTENT STYLING
   ==================================================================== */
.io-content-header {
    margin-bottom: var(--io-space-xl);
    padding-bottom: var(--io-space-md);
}

.io-content-header h2 {
    font-size: var(--io-text-lg);
    color: var(--io-text-primary);
    margin-bottom: var(--io-space-xs);
    font-weight: normal;
    letter-spacing: 0.03em;
    text-transform: lowercase;
}

.io-content-header p {
    font-size: var(--io-text-xs);
    color: var(--io-text-tertiary);
    letter-spacing: 0.02em;
}

.io-content-section {
    margin-bottom: var(--io-space-lg);
}

.io-content-section h3 {
    font-size: var(--io-text-sm);
    color: var(--io-text-secondary);
    margin-bottom: var(--io-space-sm);
    display: flex;
    align-items: center;
    gap: var(--io-space-sm);
    font-weight: normal;
    letter-spacing: 0.02em;
}

.io-content-section h3 i {
    color: var(--io-accent);
    font-size: 10px;
    opacity: 0.7;
}

.io-content-section p {
    font-size: var(--io-text-sm);
    color: var(--io-text-tertiary);
    line-height: 1.7;
    letter-spacing: 0.01em;
}

.io-info-box {
    padding: var(--io-space-md);
    background: var(--io-surface-raised);
    border-left: 2px solid var(--io-border);
    margin-top: var(--io-space-md);
    font-size: var(--io-text-xs);
    color: var(--io-text-secondary);
}

.io-info-box.accent {
    border-left-color: var(--io-accent);
}

/* Stat grid layout */
.io-stat-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--io-space-md);
    margin-top: var(--io-space-lg);
}

.io-stat-card {
    padding: var(--io-space-md);
    background: var(--io-surface-raised);
    border-left: 1px solid transparent;
    transition: all var(--io-transition-base);
}

.io-stat-card:hover {
    border-left-color: var(--io-accent);
}

.io-stat-label {
    font-size: var(--io-text-xs);
    color: var(--io-text-tertiary);
    margin-bottom: var(--io-space-xs);
    text-transform: lowercase;
}

.io-stat-value {
    font-size: var(--io-text-base);
    color: var(--io-text-primary);
    font-weight: normal;
}

.io-stat-value.accent {
    color: var(--io-accent);
}

/* Custom scrollbar */
.io-tab-content::-webkit-scrollbar {
    width: 6px;
}

.io-tab-content::-webkit-scrollbar-track {
    background: transparent;
}

.io-tab-content::-webkit-scrollbar-thumb {
    background: var(--io-accent-subtle);
    border-radius: 3px;
}

.io-tab-content::-webkit-scrollbar-thumb:hover {
    background: var(--io-accent);
}