/* Base Styles and Variables */
:root {
    /* Light Theme Colors */
    --light-bg: #FFF6DC;
    --light-sidebar-bg: #d69e43;
    --light-primary-text-color: #000000;
    --light-secondary-text-color: #000000;
    --light-sidebar-text-color: #FFFFFF;
    --light-border: #DE8F0C;
    --light-input-border: #DE8F0C;
    --light-bot-chat-bubble: #FFF6DC;
    --light-user-chat-bubble: #DE8F0C;
    --light-hover: #895a0f38;
    --light-dropdown-hover: #b9a588;
    --light-input-bg: #FFF6DC;
    --light-accent-color: #DE8F0C;
    --light-slider-thumb-color: #DE8F0C;

    /* Dark Theme Colors */
    --dark-bg: #0C111D;
    --dark-sidebar-bg: #272730;
    --dark-primary-text-color: #FFFFFF;
    --dark-secondary-text-color: #B9B9B9;
    --dark-sidebar-text-color: #FFFFFF;
    --dark-border: #374151;
    --dark-dropdown-hover: #374151;
    --dark-input-border: #FFFFFF;
    --dark-bot-chat-bubble: #0C111D;
    --dark-user-chat-bubble: #DE8F0C;
    --dark-hover: #2d3748;
    --dark-input-bg: #000000;
    --dark-accent-color: #FFFFFF;
    --dark-slider-thumb-color: #facc15;


    /* Common Colors */
    --error-color: #ef4444;
    --success-color: #10b981;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

/* Theme Styles */
body.light-theme {
    --bg-color: var(--light-bg);
    --sidebar-bg: var(--light-sidebar-bg);
    --text-color: var(--light-primary-text-color);
    --sidebar-text-color: var(--light-sidebar-text-color);
    --input-bg: var(--light-input-bg);
    --input-border: var(--light-input-border);
    --border-color: var(--light-border);
    --user-msg-bg: var(--light-user-chat-bubble);
    --bot-msg-bg: var(--light-bot-chat-bubble);
    --hover-color: var(--light-hover);
    --dropdown-hover-color: var(--light-dropdown-hover);
    --accent-color: #DE8F0C;
    --slider-thumb-color: var(--light-slider-thumb-color);
    background-color: var(--bg-color);
}

body.dark-theme {
    --bg-color: var(--dark-bg);
    --sidebar-bg: var(--dark-sidebar-bg);
    --text-color: var(--dark-primary-text-color);
    --sidebar-text-color: var(--dark-sidebar-text-color);
    --input-bg: var(--dark-input-bg);
    --input-border: var(--dark-input-border);
    --border-color: var(--dark-border);
    --user-msg-bg: var(--dark-user-chat-bubble);
    --bot-msg-bg: var(--dark-bot-chat-bubble);
    --hover-color: var(--dark-hover);
    --dropdown-hover-color: var(--dark-dropdown-hover);
    --accent-color: #FFFFFF;
    --slider-thumb-color: var(--dark-slider-thumb-color);
    background-color: var(--bg-color);
}

/* Layout */
.chat-container {
    display: flex;
    height: 100vh;
    position: relative;
    overflow: hidden;
}

/* Sidebar Styles */
.sidebar {
    width: 20%;
    background-color: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    z-index: 10;
    position: relative;
    height: 100%;
    flex-shrink: 0;
}

.sidebar.collapsed {
    width: 3.5%;
    overflow: hidden;
    transform: none;
}

.sidebar.collapsed .sidebar-content {
    padding-left: 0;
    padding-right: 0;
    
}

.sidebar.collapsed .sidebar-content > *:not(#new-chat-btn),
.sidebar.collapsed .sidebar-footer,
.sidebar.collapsed .sidebar-icon-right {
    display: none; /* Hide other content */
}

.sidebar.collapsed .sidebar-header {
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 25px 0;
}

.sidebar.collapsed #sidebar-header {
    justify-content: center;
}

.sidebar.collapsed .new-chat-btn {
  justify-content: center;
  width: 100%;
}

.sidebar.collapsed .sidebar-icon-right {
    display: none;
}

.sidebar.collapsed .btn-text {
    display: none;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 25px;
    height: 70px;
}

.sidebar-top-icons {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sidebar-icon-left, .sidebar-icon-right {
    width: 25px;
    height: 25px;
    font-weight: 500;
    font-size: 1.5rem;
    color: var(--sidebar-text-color);
    cursor: pointer;
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    padding: 0px 25px 0px 25px;
    overflow: hidden;
    height: 100%;
}

.conversation-heading {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--sidebar-text-color);
    margin-bottom: 10px;
    padding-left: 8px;
    opacity: 0.7;
}

/* Hide when sidebar is collapsed */
.sidebar.collapsed .conversation-heading {
    display: none;
}

.sidebar-footer {
    padding: 15px;
    border-top: 1px solid var(--border-color);
}

.new-chat-btn {
    display: flex;
    align-items: center;
    width: 100%;
    height: auto;
    padding: 10px 0px 10px 0px;
    gap: 8px;
    background-color: var(--sidebar-bg);
    border: none;
    cursor: pointer;
    font-weight: 500;
    font-size: 1rem;
    margin-bottom: 10px;
}

.icon-circle {
    width: 25px;
    height: 25px;
    border: 2px solid var(--sidebar-text-color);
    color: var(--sidebar-text-color);
    border-radius: 5px 5px 5px 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 16px;
}

.new-chat-btn .new-chat-icon{
    padding: 0.2;
}

.new-chat-btn .btn-text{
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--sidebar-text-color)
}


.new-chat-btn:hover {
    background-color: var(--hover-color);
}

.new-chat-btn:hover .icon-circle {
    background-color: var(--hover-color);
}

/* Conversation List */
#conversation-list {
    list-style: none;
    max-height: 60vh; /* or any fixed px like 300px */
    overflow-y: auto;
    color: var(--sidebar-text-color);
}

.conversation-item {
    padding: 12px;
    border-radius: 5px;
    cursor: pointer;
    margin-bottom: 4px;
    font-weight: 300;
    font-size: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.conversation-title {
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-grow: 1;
}

.conversation-item:hover {
    background-color: var(--hover-color);
}

.conversation-item.active {
    font-weight: 500;
    background-color: var(--hover-color);
}

.edit-conv-btn, .delete-conv-btn {
    background: transparent;
    border: none;
    color: var(--sidebar-text-color);
    opacity: 0.6;
    cursor: pointer;
}

.edit-conv-btn:hover {
    opacity: 1;
}

.edit-title-input {
    width: 100%;
    padding: 4px 8px;
    font-size: 1rem;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    background-color: var(--input-bg);
    color: var(--text-color);
}

.delete-conv-btn:hover {
    opacity: 1;
    color: var(--error-color);
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: var(--slider-thumb-color);
    transition: .4s;
}

input:checked + .slider {
    background-color: var(--accent-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 24px;
}

.slider.round:before {
    border-radius: 50%;
}

.light-icon, .dark-icon {
    color: var(--text-color);
    font-size: 14px;
}

/* Main Content */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    height: 100%;
    background-color: var(--bg-color);
}

/* Header Styles */
header {
    padding: 8px 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 5;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-left h1 {
    font-size: 2rem;
    font-weight: 1000;
    color: var(--accent-color);
}

.header-right {
    position: relative;
}

.user-avatar {
    cursor: pointer;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: block;
}

.user-dropdown {
    display: none;
    position: absolute;
    right: 0;
    top: 48px;
    min-width: 220px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 100;
}

.user-dropdown ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.user-dropdown ul li a {
    display: block;
    padding: 10px 16px;
    color: var(--text-color);
    text-decoration: none;
    transition: background 0.2s;
}

.user-dropdown #token-usage {
    font-size: 0.9rem;
    font-weight: 600;
    opacity: 0.7;
    padding: 10px 16px;
    color: var(--text-color);
}

.user-dropdown ul li a:hover {
    background-color: var(--dropdown-hover-color);
}



.sidebar-toggle {
    background: transparent;
    border: none;
    color: var(--text-color);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 5px;
}

.user-avatar img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
}

/* Chat Area */
.chat-area {
    list-style: none;
    flex-grow: 1;
    padding: 20px;
    height: auto;
    overflow-x: hidden;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.chat-welcome {
    display: flex;
    gap: 15px;
    max-width: 80%;
    margin: 20px auto;
    padding: 20px;
    background-color: var(--bot-msg-bg);
    border-radius: 10px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border: 1px solid var(--border-color);
}



.welcome-message p {
    margin-bottom: 15px;
    color: var(--text-color);
}

/* Message Styles */
.message {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    max-width: 70%;
    padding: 15px;
    border-radius: 10px;
    animation: fadeIn 0.3s;
    word-break: break-word;     /* ✅ break long words/URLs */
    overflow-wrap: break-word;  /* ✅ force wrap */
}

.message.user {
    flex-direction: row-reverse;
    margin-left: auto;
    background-color: var(--user-msg-bg);
    border-radius: 18px 0 18px 18px;
}

.message-avatar {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    display: flex;
    align-items: flex-start;
    padding-top: 0.8em; /* Adjust for perfect alignment */
}

.message.bot {
    margin-right: auto;
    background-color: var(--bot-msg-bg);
    border-radius: 0 18px 18px 18px;
}

.message-content {
    flex-grow: 1;
    font-size: 1.25rem;
    color: var(--text-color);
    max-width: 100%;
}

.message-avatar img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.message p {
    margin: 0;
}

.quick-reply-option {
    display: inline-block;
    margin: 5px 5px 5px 0;
    padding: 8px 15px;
    background-color: var(--accent-color);
    color: white;
    border-radius: 18px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.quick-reply-option:hover {
    background-color: #e68a00;
}

/* Chat Input */
.chat-input-container {
    padding: 15px 20px;
    background-color: var(--bg-color);
}

.input-group {
    display: flex;
    align-items: center;
    background-color: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 24px;
    padding: 5px 10px;
}

#chat-input {
    flex-grow: 1;
    padding: 10px;
    border: none;
    outline: none;
    background-color: transparent;
    color: var(--text-color);
    font-size: 16px;
}

#chat-input::placeholder {
    color: var(--text-color);
    opacity: 0.6;
}

.voice-btn, .send-btn {
    background: transparent;
    border: none;
    padding: 10px;
    cursor: pointer;
    color: var(--text-color);
    opacity: 0.8;
    transition: opacity 0.2s;
}

.voice-btn:hover, .send-btn:hover {
    opacity: 1;
}

.send-btn {
    color: var(--accent-color);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        position: absolute;
        top: 0;
        left: 0;
        height: 100%;
        width: 80%;
        max-width: 300px;
        z-index: 100;
    }

    .chat-welcome, .message {
        max-width: 95%;
    }
}

#conversation-list::-webkit-scrollbar {
    width: 6px;
}

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


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

.chat-area::-webkit-scrollbar-thumb {
    background-color: var(--sidebar-bg);
    border-radius: 4px;
}

.message-content pre {
    max-width: 100%;
    overflow-x: auto;
    white-space: pre-wrap; /* wraps lines */
    word-break: break-word;
}

.message-content code {
    white-space: pre-wrap;
    word-break: break-word;
}

.message-content p {
    margin-bottom: 1rem;
}

.message-content ul {
    margin-bottom: 1rem;
    padding-left: 2rem;
}