/* BU Chatbot - Dark Theme Styles */

:root {
    --bg-primary: #0d0d0f;
    --bg-secondary: #131316;
    --bg-sidebar: #0a0a0c;
    --bg-input: #1e1e22;
    --bg-hover: #2a2a30;
    --bg-message-user: #3b3b45;
    --bg-message-ai: rgba(139, 92, 246, 0.08);
    --text-primary: #f4f4f5;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --border-color: #27272a;
    --accent-color: #8b5cf6;
    --accent-hover: #a78bfa;
    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #6366f1 50%, #3b82f6 100%);
    --sidebar-width: 280px;
    --header-height: 60px;
    --input-height: 72px;
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.6);
    --glow-accent: 0 0 20px rgba(139, 92, 246, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(180deg, var(--bg-primary) 0%, #0f0f12 100%);
    color: var(--text-primary);
    display: flex;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Utility class */
.hidden {
    display: none !important;
}

/* Auth Container (Clerk Sign-in) */
.auth-container {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at top, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-primary) 0%, #0a0a0c 100%);
}

.auth-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    padding: 32px;
}

.auth-header {
    text-align: center;
    margin-bottom: 16px;
}

.auth-header h1 {
    font-size: 32px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.auth-header p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* App Container */
.app-container {
    display: flex;
    width: 100%;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--bg-sidebar) 0%, #070709 100%);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    position: relative;
}

.sidebar.collapsed {
    width: 0;
    min-width: 0;
    overflow: hidden;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

/* Fixed icon button sizes - same as other buttons */
.icon-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast), color var(--transition-fast);
    flex-shrink: 0;
}

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

/* Ensure toggle logo is properly sized */
.toggle-logo-small {
    width: 28px;
    height: 28px;
    object-fit: contain;
    border-radius: 3px;
}

.sidebar-content {
    flex: 1;
    padding: 12px;
    overflow-y: auto;
}

.sidebar-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    border-radius: 10px;
    transition: all var(--transition-fast);
    text-align: left;
}

.sidebar-btn:hover {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(99, 102, 241, 0.05) 100%);
    border-color: rgba(139, 92, 246, 0.2);
    color: var(--text-primary);
}

.sidebar-btn svg {
    flex-shrink: 0;
    color: var(--accent-color);
}

/* Chat History */
.chat-history {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.chat-history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color var(--transition-fast);
    font-size: 13px;
    color: var(--text-secondary);
}

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

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

.chat-history-item .title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-history-item .delete-btn {
    opacity: 0;
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition-fast), color var(--transition-fast);
}

.chat-history-item:hover .delete-btn {
    opacity: 1;
}

.chat-history-item .delete-btn:hover {
    color: #ef4444;
}

/* Search Modal */
.search-modal {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-sidebar);
    z-index: 100;
    display: none;
    flex-direction: column;
}

.search-modal.active {
    display: flex;
}

.search-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.search-header input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    outline: none;
}

.search-header input::placeholder {
    color: var(--text-muted);
}

.search-results {
    flex: 1;
    padding: 12px;
    overflow-y: auto;
}

.search-results-empty {
    text-align: center;
    color: var(--text-muted);
    padding: 24px;
    font-size: 14px;
}

/* Sidebar Footer with Clerk User Button */
.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.user-profile:hover {
    background-color: var(--bg-hover);
}

/* Clerk User Button styling */
#userButtonContainer {
    width: 100%;
}

/* Override Clerk's default styling to match our theme */
#userButtonContainer .cl-userButtonTrigger {
    width: 100% !important;
    justify-content: flex-start !important;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: relative;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

/* Chat Header */
.chat-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: center; 
    padding: 0 24px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(13, 13, 15, 0.8);
    backdrop-filter: blur(10px);
    position: relative;
}

/* Style for the new header logo */
.header-logo {
    width: 32px;      /* Adjust size as needed */
    height: 32px;
    object-fit: contain;
    border-radius: 6px; /* Optional: adds slightly rounded corners */
}

/* Ensure the header-title container aligns them perfectly */
.header-title {
    display: flex;
    align-items: center;
    gap: 10px;       
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 8px;
    transition: background-color var(--transition-fast);
}

.header-title:hover {
    background-color: var(--bg-hover);
}

.header-title svg {
    color: var(--text-muted);
}

/* Chat Container */
.chat-container {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    padding: 24px;
    padding-bottom: calc(var(--input-height) + 48px);
}

/* Welcome Message */
.welcome-message {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.welcome-message h1 {
    font-size: 32px;
    font-weight: 600;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
    text-shadow: 0 0 40px rgba(139, 92, 246, 0.3);
}

.welcome-message.hidden {
    display: none;
}

/* Messages */
.messages {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.message {
    display: flex;
    gap: 16px;
    animation: messageIn 0.3s ease;
}

@keyframes messageIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 14px;
    font-weight: 600;
}

.message.user .message-avatar {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
    color: white;
}

.message.assistant .message-avatar {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    color: white;
}

.message-content {
    flex: 1;
    max-width: 70%;
}

.message.user .message-content {
    text-align: right;
}

.message-bubble {
    display: inline-block;
    padding: 14px 18px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.7;
    word-wrap: break-word;
    box-shadow: var(--shadow-sm);
}

.message.user .message-bubble {
    background: linear-gradient(135deg, var(--bg-message-user) 0%, #45455a 100%);
    border-bottom-right-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.message.assistant .message-bubble {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.08) 0%, rgba(99, 102, 241, 0.04) 100%);
    border-bottom-left-radius: 6px;
    text-align: left;
    border: 1px solid rgba(139, 92, 246, 0.15);
}

/* Loading indicator */
.loading-dots {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    background-color: var(--text-muted);
    border-radius: 50%;
    animation: loadingBounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes loadingBounce {

    0%,
    80%,
    100% {
        transform: scale(0);
    }

    40% {
        transform: scale(1);
    }
}

/* Input Area - FIXED: No white box */
.input-area {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px 24px 28px;
    background: linear-gradient(transparent, var(--bg-secondary) 40%);
}

.input-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 28px;
    padding: 10px 10px 10px 18px;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
}

.input-container:focus-within {
    border-color: var(--accent-color);
    box-shadow: var(--glow-accent);
}

.attach-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast), background-color var(--transition-fast);
    flex-shrink: 0;
}

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

.input-container textarea {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    padding: 8px 0;
    resize: none;
    min-height: 24px;
    max-height: 150px;
    line-height: 1.5;
    overflow-y: auto;
}

.input-container textarea::placeholder {
    color: var(--text-muted);
}

.send-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--accent-gradient);
    color: white;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.send-btn:hover {
    transform: scale(1.08);
    box-shadow: var(--glow-accent);
}

.send-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Sparkle Decoration */
.sparkle-decoration {
    position: fixed;
    bottom: 24px;
    right: 24px;
    pointer-events: none;
    opacity: 0.4;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-muted);
}

/* Collapsed State Logic */
.sidebar.collapsed {
    width: 68px; /* Width of the sidebar when only icons show */
    min-width: 68px;
}

.sidebar.collapsed .sidebar-btn span,
.sidebar.collapsed .chat-history-item .title,
.sidebar.collapsed .chat-history-item .delete-btn,
.sidebar.collapsed .user-profile span {
    display: none; /* Hide all text */
}

.sidebar.collapsed .sidebar-btn {
    justify-content: center;
    padding: 12px 0;
}

/* Adjust Sidebar Button for better icon alignment */
.sidebar-btn svg {
    flex-shrink: 0;
}

/* Ensure User Button handles collapse */
.sidebar.collapsed #userButtonContainer .cl-userButtonBox {
    justify-content: center !important;
}
.sidebar.collapsed .cl-userButtonOuterIdentifier {
    display: none;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        z-index: 1000;
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sparkle-decoration {
        display: none;
    }

    .message-content {
        max-width: 85%;
    }
}

/* Markdown content styling */
.message-bubble p {
    margin-bottom: 8px;
}

.message-bubble p:last-child {
    margin-bottom: 0;
}

.message-bubble code {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 13px;
}

.message-bubble pre {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 12px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 8px 0;
}

.message-bubble pre code {
    background: none;
    padding: 0;
}

.message-bubble ul,
.message-bubble ol {
    margin: 8px 0;
    padding-left: 24px;
}

.message-bubble li {
    margin: 4px 0;
}

.message-bubble strong {
    font-weight: 600;
}

.message-bubble em {
    font-style: italic;
}

/* About Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    width: 90%;
    max-width: 500px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-lg), var(--glow-accent);
    transform: scale(0.95);
    transition: transform var(--transition-normal);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

.modal-body p {
    margin-bottom: 16px;
}

.modal-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 24px 0;
}

.developer-info {
    text-align: center;
}

.dev-title {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 12px;
}

.dev-links {
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); 
    gap: 12px;
    width: 100%;
}

.dev-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-muted);
    text-decoration: none;
    padding: 10px; 
    border-radius: 10px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    font-size: 13px; 
    font-weight: 500;
}

.dev-link svg {
    flex-shrink: 0; 
}

.dev-link:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent-color);
}