/* CSS Variables for Light Mode (Default: White & Black) and Dark Mode */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f1f3f5;
    --text-primary: #000000;
    --text-secondary: #495057;
    --border-color: #e9ecef;
    --accent-color: #000000;
    --accent-text: #ffffff;
    --chat-ai-bg: #f1f3f5;
    --chat-user-bg: #000000;
    --chat-user-text: #ffffff;
    --modal-bg: #ffffff;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --border-color: #333333;
    --accent-color: #ffffff;
    --accent-text: #000000;
    --chat-ai-bg: #2a2a2a;
    --chat-user-bg: #ffffff;
    --chat-user-text: #000000;
    --modal-bg: #1e1e1e;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    transition: background-color 0.2s, color 0.2s;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar Styling */
.sidebar {
    width: 280px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 24px;
}

.model-selection {
    margin-bottom: 20px;
}

.model-selection label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.model-selection select {
    width: 100%;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    cursor: pointer;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border: 1px solid transparent;
    border-radius: 8px;
    background: transparent;
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    text-align: left;
}

.nav-btn:hover {
    background-color: var(--bg-tertiary);
}

.nav-btn.active {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    font-weight: 600;
}

.sidebar-footer {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

/* Main Chat Area */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-primary);
}

.chat-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message {
    display: flex;
    gap: 12px;
    max-width: 80%;
}

.message.ai-message {
    align-self: flex-start;
}

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

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.message-content {
    padding: 12px 16px;
    border-radius: 12px;
    line-height: 1.5;
    font-size: 0.95rem;
}

.ai-message .message-content {
    background-color: var(--chat-ai-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.user-message .message-content {
    background-color: var(--chat-user-bg);
    color: var(--chat-user-text);
}

/* Chat Input Bar */
.chat-input-container {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

#chat-form {
    display: flex;
    gap: 10px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px 14px;
}

#user-input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    resize: none;
    max-height: 120px;
}

#send-btn {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 4px 8px;
}

/* Settings Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.open {
    display: flex;
}

.modal {
    background: var(--modal-bg);
    border-radius: 12px;
    width: 450px;
    max-width: 90%;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header button {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
}

.modal-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.modal-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.input-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.input-group input {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
}

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    text-align: right;
}

.primary-btn {
    background: var(--accent-color);
    color: var(--accent-text);
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
}
/* Multi-Model Grid Layout */
.grid-response-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    width: 100%;
    margin-top: 10px;
}

.ai-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px;
    display: flex;
    flex-direction: column;
}

.ai-card-header {
    font-weight: bold;
    font-size: 0.9rem;
    padding-bottom: 8px;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.quick-launchpad {
    margin-top: 15px;
    font-size: 0.85rem;
}

.launch-links {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 6px;
}

.launch-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.85rem;
    opacity: 0.8;
}

.launch-links a:hover {
    opacity: 1;
}
/* Layout Fix for Full Screen & Input Box */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.chat-input-container {
    padding: 15px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}
.visit-main-site {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 10px 14px;
    margin-bottom: 10px;
    background-color: transparent;
    color: var(--text-primary, #ffffff);
    border: 1px solid var(--border-color, #333);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
}

.visit-main-site:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-color, #4a90e2);
}