style.css

/* MartBot v5.0 - Professional Dark Theme */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #7c3aed;
    --accent-color: #0ea5e9;
    --dark-bg: #0f172a;
    --darker-bg: #020617;
    --surface-bg: #1e293b;
    --surface-light: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #334155;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --sidebar-width: 280px;
    --sidebar-collapsed: 70px;
    --header-height: 70px;
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Layout Grid */
.app-container {
    display: grid;
    grid-template-areas:
        "sidebar header"
        "sidebar main"
        "sidebar footer";
    grid-template-columns: auto 1fr;
    grid-template-rows: var(--header-height) 1fr auto;
    min-height: 100vh;
}

/* Header Styles */
.app-header {
    grid-area: header;
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.version-badge {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--surface-bg);
    border-radius: 12px;
    margin-left: 2rem;
}

.nav-tab {
    padding: 0.75rem 1.5rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-speed);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.nav-tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-tab.active {
    color: var(--text-primary);
    background: var(--primary-color);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.nav-tab.active::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: var(--accent-color);
    border-radius: 3px 3px 0 0;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { width: 0; }
    to { width: 60%; }
}

/* Header Controls */
.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.user-avatar:hover {
    transform: scale(1.05);
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed);
}

.theme-toggle:hover {
    background: var(--surface-light);
    color: var(--text-primary);
}

/* Sidebar Styles */
.app-sidebar {
    grid-area: sidebar;
    background: var(--surface-bg);
    width: var(--sidebar-width);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-speed);
    position: relative;
    overflow: hidden;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: calc(var(--header-height) - 1px);
}

.sidebar-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    opacity: 1;
    transition: opacity var(--transition-speed);
}

.sidebar.collapsed .sidebar-title {
    opacity: 0;
    width: 0;
}

.toggle-sidebar {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed);
}

.toggle-sidebar:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.sidebar.collapsed .toggle-sidebar {
    transform: rotate(180deg);
}

/* Sidebar Content */
.sidebar-content {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

.sidebar-section {
    margin-bottom: 2rem;
    animation: fadeIn 0.5s ease-out;
}

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

.section-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.sidebar.collapsed .section-title {
    opacity: 0;
    width: 0;
    overflow: hidden;
}

/* Sidebar Items */
.sidebar-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-speed);
    cursor: pointer;
    margin-bottom: 0.5rem;
    white-space: nowrap;
}

.sidebar-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    transform: translateX(5px);
}

.sidebar-item.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.sidebar-item-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.sidebar-item-text {
    font-size: 0.875rem;
    font-weight: 500;
    flex: 1;
    transition: opacity var(--transition-speed);
}

.sidebar.collapsed .sidebar-item-text {
    opacity: 0;
    width: 0;
    overflow: hidden;
}

.sidebar.collapsed .sidebar-item {
    justify-content: center;
    padding: 0.75rem;
}

/* Main Content */
.main-content {
    grid-area: main;
    padding: 2rem;
    overflow-y: auto;
    min-height: calc(100vh - var(--header-height) - 70px);
}

.content-section {
    display: none;
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.content-section.active {
    display: block;
}

.section-header {
    margin-bottom: 2rem;
}

.section-header h1 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Chat Container */
.chat-container {
    background: var(--surface-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    height: 600px;
    display: flex;
    flex-direction: column;
}

.chat-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chat-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.chat-actions {
    display: flex;
    gap: 0.5rem;
}

.chat-messages {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message {
    max-width: 80%;
    padding: 1rem 1.25rem;
    border-radius: 16px;
    animation: messageSlide 0.3s ease-out;
}

@keyframes messageSlide {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

.message.user {
    background: var(--primary-color);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.message.bot {
    background: var(--surface-light);
    color: var(--text-primary);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.message-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.message-time {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.75rem;
}

.message.bot .message-time {
    color: var(--text-muted);
}

.chat-input-container {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--surface-bg);
}

.chat-input-wrapper {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

/* Profile Cards */
.profile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.profile-card {
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all var(--transition-speed);
}

.profile-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border-color: var(--primary-color);
}

/* Login Form */
.login-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 2rem;
    background: var(--surface-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-speed);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Footer */
.app-footer {
    grid-area: footer;
    padding: 1.5rem 2rem;
    background: var(--surface-bg);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.footer-link:hover {
    color: var(--text-primary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.stat-card {
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all var(--transition-speed);
}

.stat-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-primary {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

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

::-webkit-scrollbar-track {
    background: var(--surface-light);
    border-radius: 4px;
}

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

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

/* Responsive Design */
@media (max-width: 1024px) {
    .app-container {
        grid-template-areas:
            "header"
            "main"
            "footer";
        grid-template-columns: 1fr;
    }
    
    .app-sidebar {
        position: fixed;
        left: -100%;
        top: var(--header-height);
        height: calc(100vh - var(--header-height));
        z-index: 1000;
        transition: left var(--transition-speed);
    }
    
    .app-sidebar.active {
        left: 0;
    }
    
    .mobile-menu-toggle {
        display: block !important;
    }
}

@media (max-width: 768px) {
    .app-header {
        padding: 0 1rem;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .nav-tabs {
        margin-left: 1rem;
        overflow-x: auto;
    }
    
    .nav-tab {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
}

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

.mobile-menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

/* Gradio Component Overrides */
.gradio-container {
    font-family: 'Inter', sans-serif !important;
    background: transparent !important;
}

.gr-button {
    background: var(--primary-color) !important;
    color: white !important;
    border: none !important;
    border-radius: 8px !important;
    padding: 0.75rem 1.5rem !important;
    font-weight: 500 !important;
    transition: all var(--transition-speed) !important;
}

.gr-button:hover {
    background: var(--primary-dark) !important;
    transform: translateY(-2px) !important;
}

.gr-input, .gr-textbox {
    background: var(--surface-light) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
    border-radius: 8px !important;
}

.gr-chatbot {
    background: var(--surface-bg) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 16px !important;
}

.gr-chatbot .user {
    background: var(--primary-color) !important;
    color: white !important;
    border-radius: 16px !important;
}

.gr-chatbot .bot {
    background: var(--surface-light) !important;
    color: var(--text-primary) !important;
    border-radius: 16px !important;
}

/* Loading Animation */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    animation: slideInRight 0.3s ease-out;
    z-index: 10000;
}

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}