/* ==========================================================================
   AgenticApp - Layout Styles
   Collapsed sidebar with hover expansion
   ========================================================================== */

:root {
    --sidebar-collapsed-width: 60px;
    --sidebar-expanded-width: 240px;
    --header-height: 60px;
    --transition-speed: 0.3s;
    --bg-primary: #1e1e2e;
    --bg-hover: #2a2a3e;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --border-color: #333344;
}

/* ==========================================================================
   MAIN LAYOUT STRUCTURE
   ========================================================================== */

html, body {
    height: 100%;
    margin: 0;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ==========================================================================
   SIDEBAR
   ========================================================================== */

.app-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    width: var(--sidebar-collapsed-width);
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    transition: width var(--transition-speed) ease;
    z-index: 1000;
    overflow: visible;
}

.app-sidebar:hover {
    width: var(--sidebar-expanded-width);
}

/* ==========================================================================
   SIDEBAR HEADER (Logo/Brand)
   ========================================================================== */

.sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 16px;
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
    white-space: nowrap;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-primary);
    gap: 12px;
}

.sidebar-logo-icon {
    font-size: 24px;
    min-width: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-logo-text {
    font-size: 18px;
    font-weight: 600;
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
}

.app-sidebar:hover .sidebar-logo-text {
    opacity: 1;
}

/* ==========================================================================
   SIDEBAR NAVIGATION
   ========================================================================== */

.sidebar-nav {
    height: calc(100vh - var(--header-height));
    overflow-x: hidden;
    overflow-y: auto;
    padding: 8px 0;
}

/* Custom scrollbar for sidebar */
.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* ==========================================================================
   NAV ITEMS
   ========================================================================== */

.nav-item {
    margin: 2px 8px;
}

.nav-item a {
    display: flex;
    align-items: center;
    padding: 12px 12px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    gap: 16px;
    overflow: hidden;
    white-space: nowrap;
}

.nav-item a:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item a.active {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item-icon {
    font-size: 20px;
    min-width: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-item-text {
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
    font-size: 14px;
    font-weight: 500;
}

.app-sidebar:hover .nav-item-text {
    opacity: 1;
}

/* ==========================================================================
   MAIN CONTENT AREA
   ========================================================================== */

.app-content {
    margin-left: var(--sidebar-collapsed-width);
    width: calc(100% - var(--sidebar-collapsed-width));
    height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition-speed) ease, width var(--transition-speed) ease;
}

/* ==========================================================================
   TOP HEADER
   ========================================================================== */

.app-header {
    height: var(--header-height);
    background: white;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 100;
}

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

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

/* ==========================================================================
   MAIN WORKSPACE
   ========================================================================== */

.app-workspace {
    flex: 1;
    overflow-y: auto;
    background: #f5f5f5;
}

.workspace-content {
    padding: 24px;
    max-width: 1400px;
    margin: 0 auto;
}

/* ==========================================================================
   MOBILE MENU TOGGLE
   ========================================================================== */

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #333;
    padding: 8px;
    cursor: pointer;
    margin-right: 12px;
}

.mobile-menu-toggle:hover {
    color: #000;
}

/* Mobile overlay to close menu */
.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

.mobile-overlay.active {
    display: block;
}

/* ==========================================================================
   MOBILE RESPONSIVENESS
   ========================================================================== */

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .app-sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-speed) ease;
    }
    
    .app-sidebar.mobile-open {
        transform: translateX(0);
        width: var(--sidebar-expanded-width);
    }
    
    .app-sidebar.mobile-open .sidebar-logo-text,
    .app-sidebar.mobile-open .nav-item-text {
        opacity: 1;
    }
    
    /* Don't expand on hover on mobile - use button instead */
    .app-sidebar:hover {
        width: var(--sidebar-collapsed-width);
        transform: translateX(-100%);
    }
    
    .app-sidebar.mobile-open:hover {
        width: var(--sidebar-expanded-width);
        transform: translateX(0);
    }
    
    .app-content {
        margin-left: 0;
        width: 100%;
    }
}