/* ========================================
   Main Content
   ======================================== */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    background-color: var(--bg-primary);
    overflow: hidden;
}

/* Header */
.chat-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    border-bottom: 1px solid var(--border-primary);
    background-color: var(--bg-primary);
    flex-shrink: 0;
}

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

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Sidebar Toggle Button - Hidden by default */
.sidebar-toggle-btn {
    width: 36px;
    height: 36px;
}

.sidebar-toggle-btn.hidden {
    display: none;
}

/* Model Selector - Custom Dropdown */
.model-selector {
    position: relative;
    min-width: 200px;
}

.model-select-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 1px solid var(--border-primary);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.model-select-trigger:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.1);
}

.model-select-trigger.active {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.model-selected-text {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.model-select-arrow {
    color: var(--text-secondary);
    transition: transform 0.2s ease;
    margin-left: 8px;
}

.model-select-trigger.active .model-select-arrow {
    transform: rotate(180deg);
    color: var(--accent-primary);
}

/* Dropdown Menu */
.model-select-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    max-height: 300px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 1000;
}

.model-selector.open .model-select-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Model Option - Simple */
.model-option {
    padding: 12px 16px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-secondary);
    transition: all 0.15s ease;
}

.model-option:last-child {
    border-bottom: none;
    border-radius: 0 0 12px 12px;
}

.model-option:first-child {
    border-radius: 12px 12px 0 0;
}

.model-option:hover {
    background: var(--bg-secondary);
}

.model-option.selected {
    background: var(--accent-light);
}

.model-option-name {
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
}

.model-option.selected .model-option-name {
    color: var(--accent-primary);
    font-weight: 600;
}

/* Hidden native select */
.model-dropdown-hidden {
    display: none;
}

/* ========================================
   Chat History
   ======================================== */
.chat-history {
    flex-grow: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 20px 0;
    scroll-behavior: smooth;
}

.chat-history::-webkit-scrollbar {
    width: 6px;
}

.chat-history::-webkit-scrollbar-thumb {
    background-color: var(--border-primary);
    border-radius: 3px;
}

/* ========================================
   Messages Container - Aligned with input
   ======================================== */
.message {
    display: flex;
    padding: 8px 0;
    animation: fadeInUp 0.3s ease;
}

.message-inner {
    width: 100%;
    max-width: var(--input-max-width);
    margin: 0 auto;
    display: flex;
    gap: 12px;
    padding: 0 16px;
    align-items: flex-start;
}

/* User Messages - Right aligned, pink bubble */
.message.user .message-inner {
    justify-content: flex-end;
}

.message.user .message-content-wrapper {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    max-width: 70%;
}

.message.user .message-content {
    background-color: var(--user-bubble-bg);
    border: 1px solid var(--user-bubble-border);
    border-radius: 18px 18px 4px 18px;
    padding: 10px 16px;
    color: var(--user-bubble-text);
    box-shadow: var(--shadow-pink);
    line-height: 1.7;
    letter-spacing: 0.01em;
}

/* AI Messages - Left aligned, no bubble */
.message.assistant .message-inner {
    justify-content: flex-start;
}

.message.assistant .message-content-wrapper {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    flex: 1;
}

.message.assistant .message-content {
    background-color: transparent;
    border: none;
    padding: 0;
    color: var(--text-primary);
    padding-top: 4px;
}

/* AI Avatar - No background, just the logo image */
.avatar {
    width: var(--ai-avatar-size);
    height: var(--ai-avatar-size);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
    background: transparent;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* User has no avatar */
.message.user .avatar {
    display: none;
}

.message-content {
    font-size: 0.9375rem;
    line-height: 1.8;
    letter-spacing: 0.01em;
    overflow-wrap: break-word;
}

/* Copy Button - Icon Only, Tiny */
.message-actions {
    display: flex;
    gap: 4px;
    margin-top: 2px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.message:hover .message-actions {
    opacity: 1;
}

.copy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    padding: 0;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: 3px;
    transition: all var(--transition-fast);
}

.copy-btn:hover {
    background-color: var(--bg-hover);
    color: var(--text-secondary);
}

.copy-btn i {
    width: 12px;
    height: 12px;
}

.copy-btn.copied {
    color: #10b981;
}

.copy-btn.copied i {
    color: #10b981;
}

/* ========================================
   Welcome Message
   ======================================== */
@import url('https://fonts.cdnfonts.com/css/cascadia-code');

.welcome-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-primary);
    text-align: center;
}

.welcome-text {
    font-family: 'Cascadia Code', monospace;
    font-size: 2rem;
    font-weight: 400;
}

/* ========================================
   AI Thinking Animation - Modern Style
   ======================================== */
.thinking-container {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: 12px;
    border: 1px solid var(--border-secondary);
    box-shadow: var(--shadow-sm);
    width: fit-content;
}

.thinking-dots {
    display: flex;
    gap: 4px;
}

.thinking-dots span {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: thinkingBounce 1.4s ease-in-out infinite both;
}

.thinking-dots span:nth-child(1) { animation-delay: -0.32s; }
.thinking-dots span:nth-child(2) { animation-delay: -0.16s; }
.thinking-dots span:nth-child(3) { animation-delay: 0s; }

@keyframes thinkingBounce {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

.thinking-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* Legacy loading text (fallback) */
.loading-text {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.loading-text::after {
    content: "";
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-primary);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Reasoning Details */
.reasoning-details {
    margin-bottom: 15px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    overflow: hidden;
}

.reasoning-details summary {
    padding: 8px 12px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    user-select: none;
    transition: background-color 0.2s;
}

.reasoning-details summary:hover {
    background-color: var(--bg-hover);
}

.reasoning-content {
    padding: 12px;
    border-top: 1px solid var(--border-primary);
    font-size: 0.9rem;
    color: var(--text-secondary);
    background-color: rgba(0, 0, 0, 0.02);
    max-height: 300px;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.reasoning-content::-webkit-scrollbar {
    width: 6px;
}

.reasoning-content::-webkit-scrollbar-thumb {
    background-color: var(--border-primary);
    border-radius: 3px;
}

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

/* Code Blocks - MacOS Style */
.code-block-wrapper {
    margin: 20px 0;
    border-radius: 12px;
    overflow: hidden;
    background-color: #1e1e1e; /* VS Code dark bg */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    font-family: 'Cascadia Code', 'Fira Code', monospace;
    border: 1px solid #333;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background-color: #252526;
    border-bottom: 1px solid #333;
    user-select: none;
    position: relative;
}

.window-controls {
    display: flex;
    gap: 8px;
    width: 60px; /* Reserve space */
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.control.red { background-color: #ff5f56; border: 1px solid #e0443e; }
.control.yellow { background-color: #ffbd2e; border: 1px solid #dea123; }
.control.green { background-color: #27c93f; border: 1px solid #1aab29; }

.code-lang {
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.75rem;
    color: #858585;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

/* Note: Code block copy button styles are in markdown.css */
/* This section only defines message-level copy button styles above */

pre {
    margin: 0 !important;
    padding: 20px !important;
    overflow-x: auto;
    background-color: #1e1e1e !important;
    color: #d4d4d4;
}

code {
    font-family: 'Cascadia Code', 'Fira Code', monospace !important;
    font-size: 0.95em;
    line-height: 1.6;
    color: #d4d4d4;
}

/* Ensure highlight.js classes have correct colors */
.hljs {
    background: transparent !important;
    padding: 0 !important;
    color: #d4d4d4;
}

/* Fix specific highlight.js conflicts if any */
pre code.hljs {
    display: block;
    overflow-x: auto;
    padding: 0 !important;
    background: transparent !important;
}

/* Fix Selection Background */
.code-block-wrapper ::selection {
    background-color: rgba(255, 255, 255, 0.2); /* Proper selection color for dark theme */
    color: inherit;
}

/* Remove any potential conflicting background on inline elements */
pre code * {
    background-color: transparent !important;
}

/* KaTeX Adjustments */
.katex-display {
    overflow-x: auto;
    overflow-y: hidden;
    padding: 10px 0;
    margin: 1em 0;
}