/* unified_frontend/css/layout.css */
/* ==========================================================================
   Main Application Layout Styles - MINTBOXAGENTS
   - Defines the primary structure including the header and main content panels.
   - All values are derived from the central design tokens in styles.css.
   ========================================================================== */

/* --- Main Application Layout --- */
#app-container,
#main-app-view {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-body);
    position: relative;
    overflow: hidden;
}

/* --- App Layout Container (CSS Grid: RAG Panel + Main Wrapper) --- */
#app-layout-container {
    display: grid;
    grid-template-columns: auto 1fr; /* Left panel (auto width) + Main area (rest) */
    width: 100%;
    height: 100%;
    padding: var(--spacing-md);
    gap: var(--spacing-md);
}

/* --- Main Wrapper (Header + Chat Content) --- */
/* This creates the "floating card" look for the main area */
#main-wrapper {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    /* Grid handles sizing - no calc() or margins needed */
    min-height: 0; /* Prevent flex overflow issues */

    /* The Card Look */
    background-color: var(--bg-surface);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-subtle);
}

/* --- Top Header Bar --- */
#main-header {
    height: var(--header-height);
    background-color: var(--bg-surface);
    border-bottom: var(--border-width-sm) solid var(--border-medium);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-lg);
    z-index: var(--z-layer-header);
    flex-shrink: 0;
}

#main-header h1 {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
}

#user-session-controls {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* --- Main Content Area (CSS Grid: Chat Container + Icon Bar) --- */
#main-content {
    flex-grow: 1;
    display: grid;
    grid-template-columns: 1fr auto; /* Chat container (flexible) + Icon bar (auto width) */
    overflow: hidden;
    min-height: 0; /* Prevent flex overflow issues */
}

/* --- Left Panel (RAG) --- */
#rag-panel {
    position: relative; /* Required for absolute positioned toggle button */
    width: var(--panel-width-default);
    /* Grid handles height - no calc() or margins needed */
    background-color: var(--bg-surface);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-subtle);
    z-index: var(--z-layer-panel);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#rag-panel .rag-panel__content {
    flex-grow: 1;
    overflow-y: hidden; /* Prevent double scrollbar, flex children handle scroll */
    padding: var(--spacing-sm);
    transition: padding 0.3s ease, opacity 0.2s ease;
    display: flex;
    flex-direction: column;
}

#rag-panel .rag-panel__toggle {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    transform: rotate(0deg);
    width: var(--spacing-lg);
    height: var(--spacing-lg);
    background: var(--bg-surface-hover);
    border: var(--border-width-sm) var(--border-medium);
    border-radius: var(--border-radius-circle);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    z-index: var(--z-layer-panel-controls);
}

#rag-panel .rag-panel__toggle:hover {
    background-color: var(--secondary-bg);
    border-color: var(--border-dark);
    transform: scale(1.1);
}

/* Collapsed State for Left Panel */
#rag-panel.collapsed {
    width: var(--panel-width-collapsed);
}

#rag-panel.collapsed .rag-panel__content {
    padding: var(--spacing-xs);
}

#rag-panel.collapsed .rag-panel__toggle {
    transform: rotate(180deg);
}

#rag-panel.collapsed .rag-panel__toggle:hover {
    transform: rotate(180deg) scale(1.1);
}

/* --- Middle Panel (Chat) --- */
#chat-panel {
    flex-grow: 1;
    min-width: 300px; /* Prevent chat panel from becoming too small */
    height: 100%;

    /* REMOVE CARD STYLES - It now lives inside main-wrapper */
    background-color: transparent;
    border-radius: 0;
    box-shadow: none;

    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* --- Right Panel (Agent Icon Bar Only) --- */
#agent-panel {
    /* Grid column - contains only the icon bar now */
    display: flex;
    flex-direction: column;
    z-index: var(--z-layer-panel-controls);
    height: 100%;
}

#agent-icon-bar {
    width: var(--icon-bar-width);
    height: 100%;
    background-color: var(--bg-surface);
    border-left: var(--border-width-sm) var(--border-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-sm) 0;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

.icon-bar-separator {
    width: 70%;
    height: var(--border-width-sm);
    background-color: var(--border-light);
    margin: var(--spacing-xs) 0;
    flex-shrink: 0;
}

.control-buttons-section,
.agent-buttons-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    width: 100%;
}

/* Base style for all buttons in the icon bar */
.agent-icon-button {
    width: var(--icon-button-size);
    height: var(--icon-button-size);
    border: none;
    background: none;
    cursor: pointer;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    flex-shrink: 0;
    position: relative;
}

.agent-icon-button:hover {
    background-color: var(--bg-surface-hover);
    color: var(--text-primary);
}

.agent-icon-button.active {
    background-color: var(--secondary-bg);
    color: var(--primary-color);
}

.agent-quick-access-btn {
    border: var(--border-width-md) transparent; /* Placeholder for hover/active state */
}

.agent-quick-access-btn:hover {
    transform: scale(1.1);
    border-color: var(--border-light);
}

.agent-quick-access-btn.active {
    background-color: var(--primary-bg);
    border-color: var(--primary-light);
}

.agent-quick-access-btn.active::after {
    content: '';
    position: absolute;
    right: var(--spacing-offset-sm);
    top: 50%;
    transform: translateY(-50%);
    width: var(--spacing-xxs); /* CHANGED from 4px */
    height: var(--font-size-xl); /* CHANGED from 20px */
    background-color: var(--primary-color);
    border-radius: var(--border-radius-pill);
}

.agent-quick-access-btn.switching {
    animation: agentSwitch 0.3s ease-in-out;
}

@keyframes agentSwitch {
    50% { transform: scale(1.2); }
}

/* Right Expandable Panel */
#agent-expandable-panel {
    width: 0;
    height: 100%;
    background-color: var(--bg-surface);
    overflow: hidden;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-subtle);
    display: flex;
    flex-direction: column;
}

#agent-expandable-panel.expanded {
    width: var(--panel-width-expanded);
}

#agent-content {
    width: var(--panel-width-expanded);
    height: 100%;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    padding: var(--spacing-md);
    box-sizing: border-box;
    gap: var(--spacing-sm);
}

/* --- Agent Panel Styling --- */
#agent-content h3 {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0 0 var(--spacing-xs) 0;
}

#agent-content .select-wrapper {
    background-color: var(--bg-panel-alt);
    border: var(--border-width-sm) solid var(--border-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xxs);
}

#agent-content .select-wrapper select,
#agent-content #agent-select {
    width: 100%;
    padding: var(--spacing-xs) var(--spacing-sm);
    padding-right: var(--spacing-xl);
    border: none;
    background: var(--bg-surface);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
}

#agent-content .select-wrapper select:focus,
#agent-content #agent-select:focus {
    outline: none;
    box-shadow: var(--focus-ring-primary);
}

#agent-details-memory {
    flex-grow: 1;
    overflow-y: auto;
    background-color: var(--bg-panel-alt);
    border: var(--border-width-sm) solid var(--border-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-sm);
}

/* --- Agent Ordering Panel (inside expandable panel) --- */
.agent-ordering-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: var(--spacing-lg);
    box-sizing: border-box;
    gap: var(--spacing-md);
}

.agent-ordering-panel h3 {
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--font-size-lg);
    font-weight: 500;
}

.ordering-instructions {
    background-color: var(--bg-surface-alt);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    color: var(--text-secondary);
    border: var(--border-width-sm) var(--border-light);
}

.agent-ordering-list {
    flex-grow: 1;
    overflow-y: auto;
    border: var(--border-width-sm) var(--border-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xs);
    background: var(--bg-surface-alt);
    min-height: 0;
}

.sortable-agent-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xxs);
    background-color: var(--bg-surface);
    border: var(--border-width-sm) var(--border-medium);
    border-radius: var(--border-radius-md);
    cursor: grab;
    transition: all 0.2s ease;
    user-select: none;
}

.sortable-agent-item:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--border-dark);
}

.sortable-agent-item.dragging {
    opacity: 0.5;
    background-color: var(--secondary-bg);
}

.sortable-agent-item.drag-over {
    border-top: var(--border-width-md) solid var(--primary-color);
}

.position-number {
    width: var(--spacing-lg);
    height: var(--spacing-lg);
    background-color: var(--secondary-bg);
    color: var(--primary-dark);
    border-radius: var(--border-radius-circle);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-xs);
    margin-right: var(--spacing-sm);
    flex-shrink: 0;
}

.drag-handle {
    color: var(--text-muted);
    margin-right: var(--spacing-sm);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.drag-handle:active {
    cursor: grabbing;
}

.agent-info {
    flex-grow: 1;
    min-width: 0;
}

.agent-name {
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.ordering-actions {
    display: flex;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-md);
    border-top: var(--border-width-sm) var(--border-light);
    flex-shrink: 0;
}

/* ==========================================================================
   RESIZABLE PANEL SYSTEM
   ========================================================================== */

/* Container for Chat + Resizable Panel */
#chat-panel-container {
    display: flex;
    flex-direction: row;
    height: 100%;
    overflow: hidden;
    flex: 1;
    min-width: 0;
}

/* Unified Right Panel (replaces old agent-expandable-panel for content) */
#unified-right-panel {
    width: 0;
    height: 100%;
    overflow: hidden;
    transition: width 0.15s ease-out;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-surface);
    position: relative;
}

#unified-right-panel.active {
    border-left: var(--border-width-sm) solid var(--border-light);
}

#panel-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-md);
    min-width: 280px; /* Minimum content width for readability */
}

/* Resize Handle */
.panel-resize-handle {
    width: 6px;
    height: 100%;
    cursor: col-resize;
    background: transparent;
    flex-shrink: 0;
    position: relative;
    z-index: var(--z-layer-panel-controls);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

.panel-resize-handle.visible {
    opacity: 1;
    pointer-events: auto;
}

/* Visual indicator on handle */
.panel-resize-handle::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 2px;
    height: 40px;
    background: var(--border-medium);
    border-radius: var(--border-radius-pill);
    opacity: 0;
    transition: opacity 0.2s ease, height 0.2s ease;
}

.panel-resize-handle:hover::after {
    opacity: 1;
    height: 60px;
}

.panel-resize-handle.dragging::after {
    opacity: 1;
    height: 80px;
    background: var(--accent-primary);
}

/* Prevent text selection during resize */
body.resizing-panel {
    cursor: col-resize !important;
    -webkit-user-select: none;
    user-select: none;
}

body.resizing-panel * {
    cursor: col-resize !important;
}

/* Chat Expand Button (visible when chat is hidden) */
.chat-expand-btn {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 24px;
    height: 48px;
    background: var(--bg-surface);
    border: var(--border-width-sm) solid var(--border-light);
    border-left: none;
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    z-index: var(--z-layer-panel-controls);
}

.chat-expand-btn:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
    width: 28px;
}

.chat-expand-btn[hidden] {
    display: none;
}

/* Hide chat panel when ratio is 100% panel */
#chat-panel.hidden {
    display: none;
}

/* Panel Header Styling */
.panel-header {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0 0 var(--spacing-md) 0;
    padding-bottom: var(--spacing-sm);
    border-bottom: var(--border-width-sm) solid var(--border-light);
}

/* Artifact Panel Workspace */
.artifact-panel-workspace {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: var(--spacing-sm);
}

.artifact-panel-workspace .artifact-workspace-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: var(--border-width-sm) solid var(--border-light);
}

.artifact-panel-workspace .artifact-workspace-content {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}

.artifact-panel-workspace .artifact-actions {
    display: flex;
    gap: var(--spacing-xs);
}