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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #ffffff 0%, #fef2f2 50%, #ffffff 100%);
    color: var(--truex-text);
    height: 100vh;
    overflow: hidden;
}

.chat-container {
    display: flex;
    height: 100vh;
}

/* TrueX Brand Colors - Red & White Theme */
:root {
    --truex-primary: #dc2626;
    --truex-secondary: #991b1b;
    --truex-accent: #ef4444;
    --truex-light: #ffffff;
    --truex-gray: #6b7280;
    --truex-dark: #1f2937;
    --truex-sidebar: #ffffff;
    --truex-surface: #f9fafb;
    --truex-card: #ffffff;
    --truex-border: #e5e7eb;
    --truex-hover: #fef2f2;
    --truex-text: #111827;
    --truex-subtle: #6b7280;
}

/* Sidebar Styles */
.sidebar {
    width: 260px;
    background: var(--truex-sidebar);
    border-right: 1px solid var(--truex-border);
    display: flex;
    flex-direction: column;
    transition: margin-left 0.3s ease;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.05);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--truex-border);
    background: var(--truex-surface);
}

.logo-section {
    margin-bottom: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--truex-primary);
    border: 2px solid var(--truex-primary);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
}

.logo svg {
    color: #ffffff;
}

.logo-text {
    font-size: 16px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.5px;
}

.new-chat-btn {
    width: 100%;
    padding: 14px 18px;
    background: #ffffff;
    border: 2px solid var(--truex-primary);
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--truex-primary);
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.new-chat-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.2);
    background: var(--truex-hover);
    border-color: var(--truex-secondary);
}

.new-chat-btn svg {
    color: var(--truex-primary);
}

.chat-history {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
}

.history-item {
    padding: 14px 16px;
    margin: 4px 0;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--truex-surface);
    border: 1px solid var(--truex-border);
    position: relative;
}

.history-item:hover {
    background: var(--truex-hover);
    border-color: var(--truex-primary);
    transform: translateX(4px);
}

.history-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--truex-text);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-date {
    font-size: 12px;
    color: var(--truex-subtle);
}

/* Main Chat Area */
.main-chat {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--truex-light);
}

.chat-header {
    padding: 24px 32px;
    border-bottom: 1px solid var(--truex-border);
    background: var(--truex-surface);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--truex-primary);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.header-subtitle {
    font-size: 14px;
    color: var(--truex-subtle);
    font-weight: 500;
}

/* Messages Container */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.welcome-message {
    text-align: center;
    margin-top: 80px;
    color: var(--truex-text);
}

.welcome-message h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--truex-primary);
    letter-spacing: -1px;
}

.welcome-message p {
    font-size: 18px;
    color: var(--truex-subtle);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto;
}

.message {
    display: flex;
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    animation: fadeInUp 0.3s ease;
}

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

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.message.assistant .message-avatar {
    background: var(--truex-primary);
    color: #ffffff;
    border: 2px solid var(--truex-primary);
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
}

.message.user .message-avatar {
    background: var(--truex-dark);
    color: #ffffff;
    border: 2px solid var(--truex-dark);
    box-shadow: 0 4px 12px rgba(31, 41, 55, 0.25);
}

.message-content {
    flex: 1;
    min-width: 0;
}

.message.assistant .message-content {
    background: var(--truex-surface);
    padding: 18px 20px;
    border-radius: 12px;
    border: 1px solid var(--truex-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.message.user .message-content {
    background: var(--truex-primary);
    color: #ffffff;
    padding: 18px 20px;
    border-radius: 12px;
    border: 1px solid var(--truex-primary);
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
}

.message-text {
    font-size: 15px;
    line-height: 1.7;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--truex-text);
}

.message.user .message-text {
    color: #ffffff;
}

.message-time {
    font-size: 12px;
    color: var(--truex-subtle);
    margin-top: 8px;
    font-weight: 500;
}

.message.user .message-time {
    color: rgba(255, 255, 255, 0.8);
}

/* Message Image Styling */
.message-image {
    margin-top: 12px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--truex-surface);
    border: 1px solid var(--truex-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.message-image img {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    transition: transform 0.2s ease;
}

.message-image img:hover {
    transform: scale(1.02);
}

.message.assistant .message-image {
    border-color: var(--truex-primary);
    box-shadow: 0 2px 12px rgba(220, 38, 38, 0.15);
}

.message.user .message-image {
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

/* Message Iframe Styling for Looker Studio */
.message-iframe {
    margin-top: 16px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--truex-surface);
    border: 1px solid var(--truex-border);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    position: relative;
}

.iframe-caption {
    background: linear-gradient(135deg, var(--truex-primary), var(--truex-secondary));
    color: white;
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.message-iframe iframe {
    width: 100%;
    height: 450px;
    border: none;
    display: block;
    background: white;
    transition: transform 0.2s ease;
}

.message-iframe iframe:hover {
    transform: scale(1.01);
}

.message.assistant .message-iframe {
    border-color: var(--truex-primary);
    box-shadow: 0 4px 16px rgba(220, 38, 38, 0.2);
}

.message.user .message-iframe {
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

/* Responsive iframe styling */
@media (max-width: 768px) {
    .message-iframe iframe {
        height: 300px;
    }

    .iframe-caption {
        font-size: 11px;
        padding: 6px 10px;
    }
}

@media (max-width: 480px) {
    .message-iframe iframe {
        height: 250px;
    }
}

/* Input Container */
.input-container {
    padding: 24px 32px 32px;
    border-top: 1px solid var(--truex-border);
    background: var(--truex-surface);
}

.input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
    background: var(--truex-light);
    border: 2px solid var(--truex-border);
    border-radius: 16px;
    padding: 16px 20px;
    transition: all 0.3s ease;
}

.input-wrapper:focus-within {
    border-color: var(--truex-primary);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.message-input {
    flex: 1;
    border: none;
    background: transparent;
    resize: none;
    font-size: 15px;
    line-height: 1.6;
    font-family: inherit;
    outline: none;
    max-height: 140px;
    overflow-y: auto;
    color: var(--truex-text);
}

.message-input::placeholder {
    color: var(--truex-subtle);
}

.send-button {
    width: 44px;
    height: 44px;
    border: none;
    background: var(--truex-primary);
    color: #ffffff;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
}

.send-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.35);
    background: var(--truex-secondary);
}

.send-button:disabled {
    background: var(--truex-hover);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.input-footer {
    text-align: center;
    margin-top: 12px;
}

.input-footer span {
    font-size: 12px;
    color: var(--truex-subtle);
    font-weight: 500;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100vh;
        z-index: 1000;
        margin-left: -260px;
    }

    .sidebar.active {
        margin-left: 0;
    }

    .main-chat {
        width: 100%;
    }

    .messages-container {
        padding: 16px;
    }

    .input-container {
        padding: 12px 16px 16px;
    }

    .chat-header {
        padding: 12px 16px;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #999;
}

/* Loading animation */
.typing-indicator {
    display: inline-flex;
    gap: 4px;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #666;
    animation: typing 1.4s infinite ease-in-out;
}

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

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

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Context Menu Styles */
.context-menu {
    position: fixed;
    background: var(--truex-light);
    border: 1px solid var(--truex-border);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    display: none;
    min-width: 180px;
    overflow: hidden;
}

.context-menu-item {
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--truex-text);
    transition: all 0.3s ease;
}

.context-menu-item:hover {
    background: var(--truex-hover);
    transform: translateX(4px);
}

.context-menu-item svg {
    flex-shrink: 0;
    color: var(--truex-subtle);
}

.context-menu-item#deleteItem {
    color: var(--truex-accent);
}

.context-menu-item#deleteItem:hover {
    background: #fef2f2;
}

/* Rename Dialog Styles */
.rename-dialog {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1001;
    backdrop-filter: blur(8px);
}

.rename-dialog.show {
    display: flex;
}

.rename-dialog-content {
    background: var(--truex-light);
    border: 1px solid var(--truex-border);
    border-radius: 16px;
    padding: 32px;
    min-width: 400px;
    max-width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.rename-dialog-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--truex-text);
    letter-spacing: -0.5px;
}

.rename-input {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--truex-border);
    border-radius: 10px;
    font-size: 15px;
    font-family: inherit;
    outline: none;
    margin-bottom: 24px;
    transition: all 0.3s ease;
    background: var(--truex-light);
    color: var(--truex-text);
}

.rename-input:focus {
    border-color: var(--truex-primary);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.rename-input::placeholder {
    color: var(--truex-subtle);
}

.rename-dialog-buttons {
    display: flex;
    gap: 16px;
    justify-content: flex-end;
}

.rename-btn {
    padding: 12px 24px;
    border: 2px solid var(--truex-border);
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cancel-btn {
    background: var(--truex-light);
    color: var(--truex-subtle);
    border-color: var(--truex-border);
}

.cancel-btn:hover {
    background: var(--truex-hover);
    color: var(--truex-text);
    border-color: var(--truex-primary);
}

.confirm-btn {
    background: var(--truex-primary);
    color: #ffffff;
    border: var(--truex-primary);
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
}

.confirm-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.35);
    background: var(--truex-secondary);
}

.confirm-btn:disabled {
    background: var(--truex-hover);
    color: var(--truex-subtle);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* History item hover state with visual feedback */
.history-item {
    position: relative;
}

.history-item::after {
    content: '⋮';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255, 255, 255, 0.4);
    font-size: 14px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.history-item:hover::after {
    opacity: 1;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Scrollbar styling for TrueX theme */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--truex-border);
    border-radius: 4px;
    transition: background 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--truex-primary);
}

/* Loading animation with TrueX colors */
.typing-indicator span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--truex-primary);
    animation: typing 1.4s infinite ease-in-out;
}

/* Additional TrueX-specific styling */
.truex-glow {
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.truex-border {
    border: 1px solid rgba(0, 212, 255, 0.3);
}

/* Smart home tech aesthetic */
.tech-pattern {
    background-image:
        radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 107, 53, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(0, 212, 255, 0.05) 0%, transparent 50%);
}

/* Quick Actions */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin-top: 32px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.quick-action {
    padding: 16px 20px;
    background: var(--truex-card);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px;
    color: #ffffff;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.quick-action:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--truex-primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.2);
}

/* TrueX Smart Home specific responses */
.truex-device-card {
    background: var(--truex-card);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px;
    padding: 16px;
    margin: 12px 0;
    backdrop-filter: blur(10px);
}

.truex-device-title {
    color: var(--truex-primary);
    font-weight: 600;
    margin-bottom: 8px;
}

.truex-device-status {
    display: inline-block;
    padding: 4px 8px;
    background: rgba(40, 167, 69, 0.2);
    color: #28a745;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
}

/* ============================================
   LOGIN PAGE STYLES - TrueX Aligned Theme
   ============================================ */

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #ffffff 0%, #fef2f2 50%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 30%, rgba(220, 38, 38, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 70% 70%, rgba(220, 38, 38, 0.03) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(2%, 2%) rotate(5deg); }
}

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    width: 100%;
    z-index: 1;
}

.login-card {
    background: var(--truex-light);
    border: 1px solid var(--truex-border);
    border-radius: 20px;
    padding: 48px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1),
                0 0 0 1px rgba(220, 38, 38, 0.05);
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-logo {
    text-align: center;
    margin-bottom: 40px;
}

.login-logo svg {
    color: var(--truex-primary);
    display: inline-block;
    margin-bottom: 16px;
    filter: drop-shadow(0 4px 12px rgba(220, 38, 38, 0.2));
}

.login-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--truex-text);
    margin: 0 0 8px 0;
    letter-spacing: -0.5px;
}

.login-subtitle {
    font-size: 14px;
    color: var(--truex-subtle);
    margin: 0;
    font-weight: 500;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--truex-text);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--truex-border);
    border-radius: 12px;
    font-size: 15px;
    font-family: inherit;
    background: var(--truex-light);
    color: var(--truex-text);
    transition: all 0.3s ease;
    outline: none;
}

.form-input:focus {
    border-color: var(--truex-primary);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-input::placeholder {
    color: var(--truex-subtle);
}

.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input-wrapper .form-input {
    padding-right: 48px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--truex-subtle);
    transition: all 0.2s ease;
    border-radius: 8px;
}

.toggle-password:hover {
    color: var(--truex-primary);
    background: var(--truex-hover);
}

.eye-icon, .eye-off-icon {
    transition: all 0.2s ease;
}

.error-message {
    padding: 12px 16px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 10px;
    color: var(--truex-accent);
    font-size: 13px;
    font-weight: 500;
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.login-btn {
    width: 100%;
    padding: 16px 24px;
    background: var(--truex-primary);
    border: none;
    border-radius: 12px;
    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 52px;
    margin-top: 8px;
}

.login-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.35);
    background: var(--truex-secondary);
}

.login-btn:active:not(:disabled) {
    transform: translateY(0);
}

.login-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-text {
    transition: opacity 0.2s ease;
}

.login-btn.loading .btn-text {
    opacity: 0;
}

.btn-loader {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-btn:not(.loading) .btn-loader {
    display: none;
}

.login-btn.loading .btn-loader {
    display: flex;
}

.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.login-footer {
    text-align: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--truex-border);
}

.login-footer p {
    font-size: 13px;
    color: var(--truex-subtle);
    margin: 0;
}

/* Chat Page Styles */
.chat-page {
    display: none;
}

.chat-page.active {
    display: block;
}

/* Header with User Info */
.chat-header {
    padding: 24px 32px;
    border-bottom: 1px solid var(--truex-border);
    background: var(--truex-surface);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-left {
    flex: 1;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.welcome-message-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--truex-text);
}

.user-dropdown {
    position: relative;
}

.user-menu-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--truex-light);
    border: 2px solid var(--truex-border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--truex-text);
}

.user-menu-btn:hover {
    border-color: var(--truex-primary);
    background: var(--truex-hover);
}

.user-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 280px;
    background: var(--truex-light);
    border: 1px solid var(--truex-border);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.user-dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-dropdown-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    border-bottom: 1px solid var(--truex-border);
}

.user-avatar {
    width: 44px;
    height: 44px;
    background: var(--truex-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
}

.user-dropdown-info {
    flex: 1;
    min-width: 0;
}

.user-email {
    font-size: 14px;
    font-weight: 600;
    color: var(--truex-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 12px;
    color: var(--truex-subtle);
    margin-top: 2px;
}

.user-dropdown-divider {
    height: 1px;
    background: var(--truex-border);
}

.logout-btn {
    width: 100%;
    padding: 14px 20px;
    background: none;
    border: none;
    border-radius: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    font-weight: 500;
    color: var(--truex-text);
    transition: all 0.2s ease;
    font-family: inherit;
}

.logout-btn:hover {
    background: var(--truex-hover);
    color: var(--truex-accent);
}

.logout-btn svg {
    flex-shrink: 0;
}

/* Responsive Design for Login */
@media (max-width: 480px) {
    .login-card {
        padding: 32px 24px;
        border-radius: 16px;
    }

    .login-title {
        font-size: 24px;
    }

    .form-input {
        padding: 12px 16px;
        font-size: 14px;
    }

    .login-btn {
        padding: 14px 20px;
        font-size: 14px;
    }
}

/* Responsive for Chat Header */
@media (max-width: 768px) {
    .chat-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 16px;
    }

    .header-right {
        width: 100%;
        justify-content: space-between;
    }

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

    .user-dropdown-menu {
        min-width: 260px;
    }
}