/**
 * Verifyr Chat Interface - Chat-Specific Styles
 *
 * Uses Verifyr design system tokens and components
 * All colors, spacing, typography from design system CSS variables
 */

/* ============================================================================
   Layout & Container
   ============================================================================ */

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    font-family: var(--font-primary);
}

.chat-container {
    max-width: 1000px;
    margin: 0 auto;
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
    position: relative;
}

/* ============================================================================
   Conversation Sidebar
   ============================================================================ */

.conversation-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 300px;
    height: 100vh;
    background: var(--white);
    box-shadow: var(--shadow-elevated);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.conversation-sidebar.active {
    transform: translateX(0);
}

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

.sidebar-header h2 {
    margin: 0;
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    color: var(--dark);
}

.sidebar-close-btn {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--gray);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.sidebar-close-btn:hover {
    background: var(--light-gray);
    color: var(--dark);
}

.new-conversation-btn {
    margin: var(--spacing-base) var(--spacing-xl);
    padding: var(--spacing-base) var(--spacing-lg);
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-blue-sm);
}

.new-conversation-btn:hover {
    background: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-blue-md);
}

/* Desktop Navigation Buttons (like quiz pages) */
.header-nav {
    display: none; /* Hidden by default (mobile) */
}

.header-nav .nav-btn {
    padding: var(--spacing-xs) var(--spacing-base);
    background: var(--white);
    color: var(--dark);
    border: 2px solid var(--light-gray);
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.header-nav .nav-btn:hover {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
    transform: translateY(-2px);
}

.header-nav .nav-btn.active {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}

/* Desktop: Show nav buttons, hide mobile menu */
@media (min-width: 769px) {
    .mobile-menu {
        display: none !important;
    }

    .mobile-nav,
    .hamburger-btn {
        display: none !important;
    }

    /* Show desktop navigation */
    .header-nav.desktop-nav {
        display: flex;
        align-items: center;
        gap: var(--spacing-sm);
    }

    /* Hide header controls (they're in sidebar) */
    .header-logo-section .lang-switch,
    .header-controls {
        display: none !important;
    }
}

/* Sidebar Sections - Compact like mobile menu */
.sidebar-section {
    padding: var(--spacing-base) var(--spacing-base);
    border-bottom: 1px solid var(--border-light);
}

.sidebar-section-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray);
    margin-bottom: 4px;
}

/* Sidebar Language Switch - Match mobile design */
.sidebar-lang-switch {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: var(--spacing-xs);
    background: var(--light-gray);
    border-radius: 8px;
}

.sidebar-lang-switch .lang-option {
    padding: 4px 12px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    background: transparent;
    color: var(--gray);
}

.sidebar-lang-switch .lang-option.active {
    background: var(--primary-blue);
    color: var(--white);
}

.sidebar-lang-switch .lang-option:hover:not(.active) {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-blue);
}

/* Sidebar Model Selector - Match mobile design */
.sidebar-model-selector {
    width: 100%;
    font-size: 0.875rem;
    padding: 6px 8px;
}

/* Sidebar Conversations Section */
.sidebar-conversations-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: var(--spacing-base);
}

.sidebar-conversations-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.sidebar-new-conversation-btn {
    width: 28px;
    height: 28px;
    padding: 0;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: 6px;
    font-size: 1.25rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.sidebar-new-conversation-btn:hover {
    background: var(--dark-blue);
}

.conversations-list {
    flex: 1;
    overflow-y: auto;
    padding: 0 var(--spacing-sm);
    margin-top: 4px;
}

/* Sidebar User Section - Match mobile design */
.sidebar-user-section {
    margin-top: auto;
    padding: var(--spacing-base);
    border-top: 1px solid var(--border-light);
}

.sidebar-user-info {
    margin-bottom: 6px;
}

.sidebar-user-email {
    display: block;
    font-size: 0.75rem;
    color: var(--gray);
    word-break: break-all;
}

.sidebar-logout-btn {
    width: 100%;
    padding: 6px 12px;
    background: var(--white);
    color: var(--dark);
    border: 2px solid var(--light-gray);
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.sidebar-logout-btn:hover {
    background: var(--error);
    color: var(--white);
    border-color: var(--error);
}

.conversation-item {
    padding: var(--spacing-base) var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

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

.conversation-item.active {
    background: linear-gradient(135deg, var(--bg-gradient-blue-start) 0%, var(--bg-gradient-blue-end) 100%);
    border-color: var(--primary-blue);
}

.conversation-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--dark);
    margin: 0 0 var(--spacing-xs) 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.conversation-timestamp {
    font-size: var(--font-size-xs);
    color: var(--gray);
}

.sidebar-toggle-btn {
    position: fixed;
    left: var(--spacing-base);
    top: var(--spacing-base);
    width: 48px;
    height: 48px;
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 24px;
    color: var(--dark);
    cursor: pointer;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-card);
    transition: all 0.2s ease;
}

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

/* ============================================================================
   Header
   ============================================================================ */

.chat-header {
    padding: var(--spacing-lg) var(--spacing-xl) var(--spacing-base);
    border-bottom: 1px solid var(--border-light);
    background: var(--white);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    box-shadow: var(--shadow-md);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.header-logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    flex-wrap: wrap;
}

.chat-title {
    font-family: var(--font-display);
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--dark);
    margin: 0;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
}

.hero-badge-container {
    text-align: center;
    margin-top: 0;
}

/* Model Selector */
.model-selector {
    padding: var(--spacing-sm) var(--spacing-base);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    background: var(--light-gray);
    color: var(--dark);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.model-selector:hover {
    border-color: var(--primary-blue);
    background: var(--white);
}

.model-selector:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* User Menu */
.user-menu {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-xs);
}

.user-email {
    font-size: var(--font-size-sm);
    color: var(--gray);
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.logout-btn {
    padding: var(--spacing-sm) var(--spacing-base);
    background: transparent;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--gray);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.logout-btn:hover {
    background: var(--light-gray);
    color: var(--dark);
    border-color: var(--gray);
}

/* ============================================================================
   Messages Area
   ============================================================================ */

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
    background: var(--white);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    scroll-behavior: smooth;
}

/* Scrollbar Styling */
.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: var(--light-gray);
    border-radius: var(--radius-sm);
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--gray);
    border-radius: var(--radius-sm);
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--dark-blue);
}

/* ============================================================================
   Message Bubbles
   ============================================================================ */

.message {
    max-width: 75%;
    animation: slideUp 0.3s ease-out;
}

.message-content {
    padding: var(--spacing-base) var(--spacing-lg);
    border-radius: var(--radius-md);
    line-height: var(--line-height-normal);
    font-size: var(--font-size-base);
    word-wrap: break-word;
}

/* User Message (Right-aligned, Blue) */
.user-message {
    align-self: flex-end;
    margin-left: auto;
}

.user-message .message-content {
    background: var(--primary-blue);
    color: var(--white);
    box-shadow: var(--shadow-card);
}

/* Assistant Message (Left-aligned, Gray) */
.assistant-message {
    align-self: flex-start;
    margin-right: auto;
}

.assistant-message .message-content {
    background: var(--light-gray);
    color: var(--dark);
    box-shadow: var(--shadow-card);
}

/* Welcome Message */
.welcome-message {
    max-width: 85%;
    border: 2px solid var(--primary-blue);
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--bg-gradient-blue-start) 0%, var(--bg-gradient-blue-end) 100%);
}

.welcome-message .message-content {
    background: transparent;
    box-shadow: none;
}

.welcome-text-de {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--dark);
    font-weight: var(--font-weight-semibold);
}

.welcome-text-en {
    margin: 0;
    color: var(--gray);
    font-size: var(--font-size-sm);
}

/* Loading Message */
.loading-message .message-content {
    padding: var(--spacing-lg);
}

.loading-dots {
    display: flex;
    gap: var(--spacing-sm);
}

.loading-dots span {
    width: 8px;
    height: 8px;
    background: var(--gray);
    border-radius: var(--radius-full);
    animation: bounce 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 bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

/* Error Message */
.error-message {
    max-width: 85%;
    align-self: center;
}

/* ============================================================================
   Sources
   ============================================================================ */

.message-sources {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-light);
}

.sources-title {
    font-size: var(--font-size-sm);
    font-weight: normal;
    color: var(--gray);
    margin-bottom: var(--spacing-xs);
    font-family: monospace;
}

.source-card {
    background: transparent;
    padding: 2px 0;
    margin-bottom: 0;
    border-radius: 0;
    border-left: none;
    box-shadow: none;
    transition: none;
    font-weight: normal;
    color: var(--gray);
    font-size: var(--font-size-sm);
    font-family: monospace;
}

.source-link {
    color: var(--primary-blue, #0066cc);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: opacity 0.2s;
}

.source-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.source-link-icon {
    font-size: 0.9em;
    opacity: 0.7;
}

.source-name {
    color: var(--gray, #666);
    font-size: 0.9em;
    margin-left: 0.5rem;
    font-family: var(--font-primary, sans-serif);
}

/* ============================================================================
   Metadata
   ============================================================================ */

.message-metadata {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-light);
    display: flex;
    gap: var(--spacing-base);
    flex-wrap: wrap;
}

.metadata-item {
    font-size: var(--font-size-sm);
    color: var(--gray);
    font-family: monospace;
}

/* ============================================================================
   Quick Replies
   ============================================================================ */

.quick-replies {
    padding: var(--spacing-base) var(--spacing-xl);
    background: var(--white);
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.quick-reply-btn {
    padding: var(--spacing-sm) var(--spacing-base);
    border-radius: var(--radius-xl);
    background: var(--light-gray);
    border: 1px solid var(--border-light);
    color: var(--gray);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-primary);
}

.quick-reply-btn:hover {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-blue-sm);
}

.quick-reply-btn:active {
    transform: translateY(0);
}

/* ============================================================================
   Input Area
   ============================================================================ */

.chat-input-area {
    padding: var(--spacing-xl);
    background: var(--white);
    border-top: 1px solid var(--border-light);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    box-shadow: var(--shadow-md);
}

.chat-input-container {
    display: flex;
    gap: var(--spacing-sm);
    background: var(--light-gray);
    padding: var(--spacing-sm);
    border-radius: var(--radius-input);
    box-shadow: var(--shadow-sm);
}

.chat-input {
    flex: 1;
    padding: var(--input-padding);
    border: none;
    background: transparent;
    font-size: var(--font-size-md);
    color: var(--dark);
    font-family: var(--font-primary);
}

.chat-input::placeholder {
    color: var(--gray);
}

.chat-input:focus {
    outline: none;
}

.chat-input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Send Button (uses design system .submit-btn) */
.submit-btn {
    min-width: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.input-note {
    margin-top: var(--spacing-sm);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--gray);
}

/* ============================================================================
   Footer
   ============================================================================ */

.chat-footer {
    padding: var(--spacing-base) 0;
    text-align: center;
}

.chat-footer p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--gray);
}

/* ============================================================================
   Responsive Design - Mobile
   ============================================================================ */

@media (max-width: 768px) {
    .chat-container {
        padding: var(--spacing-sm);
    }

    .chat-header {
        padding: var(--spacing-base) var(--spacing-base) var(--spacing-base) 0;
    }

    .header-top {
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-base);
        justify-content: space-between;
        padding-left: 0;
    }

    .header-logo-section {
        width: auto;
        gap: var(--spacing-sm);
    }

    /* Hide desktop controls on mobile */
    .header-logo-section .lang-switch {
        display: none !important;
    }

    .header-controls {
        display: none !important;
    }

    /* Show mobile navigation */
    .mobile-nav {
        display: flex !important;
    }

    /* Mobile header layout: Hamburger left, Logo centered */
    .header-top {
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Hamburger button on the left */
    .hamburger-btn {
        position: absolute;
        left: var(--spacing-base);
        width: 44px;
        height: 44px;
        background: var(--white);
        border: 2px solid var(--light-gray);
        border-radius: 8px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        padding: 0;
        cursor: pointer;
        transition: all 0.3s ease;
        z-index: 10;
    }

    /* Logo centered */
    .header-logo-section {
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .header-logo-section .logo {
        text-align: center;
    }

    .hamburger-btn span {
        width: 20px;
        height: 2px;
        background: var(--dark);
        display: block;
        transition: all 0.3s ease;
    }

    .hamburger-btn:hover {
        background: var(--primary-blue);
        border-color: var(--primary-blue);
    }

    .hamburger-btn:hover span {
        background: var(--white);
    }

    /* Mobile menu dropdown - opens below hamburger on left */
    .mobile-menu {
        position: fixed;
        top: 80px;
        left: var(--spacing-base);
        background: var(--white);
        border: 2px solid var(--light-gray);
        border-radius: 12px;
        padding: var(--spacing-sm);
        box-shadow: 0 8px 24px var(--shadow-dark-medium);
        z-index: 1000;
        min-width: 200px;
        display: none;
    }

    .mobile-menu.show {
        display: flex;
        flex-direction: column;
        gap: 4px;
    }

    /* Mobile language switch */
    .mobile-lang-switch {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 4px;
        padding: var(--spacing-xs);
        background: var(--light-gray);
        border-radius: 8px;
    }

    .mobile-lang-switch .lang-option {
        padding: 4px 12px;
        border-radius: 6px;
        font-weight: 600;
        font-size: 0.875rem;
        cursor: pointer;
        transition: all 0.2s ease;
        background: transparent;
        color: var(--gray);
    }

    .mobile-lang-switch .lang-option.active {
        background: var(--primary-blue);
        color: var(--white);
    }

    .mobile-lang-switch .lang-option:hover:not(.active) {
        background: rgba(59, 130, 246, 0.1);
        color: var(--primary-blue);
    }

    /* Mobile model selector */
    .mobile-model-selector {
        display: flex;
        flex-direction: column;
        gap: 4px;
        padding: var(--spacing-xs);
    }

    .mobile-model-selector label {
        font-size: 0.75rem;
        color: var(--gray);
        font-weight: 600;
    }

    .mobile-model-selector .model-selector {
        width: 100%;
        font-size: 0.875rem;
        padding: 6px 8px;
    }

    /* Mobile menu divider */
    .mobile-menu-divider {
        height: 1px;
        background: var(--light-gray);
        margin: 4px 0;
    }

    /* Mobile menu items */
    .mobile-menu-item {
        padding: var(--spacing-sm) var(--spacing-base);
        background: transparent;
        color: var(--dark);
        border-radius: 8px;
        text-decoration: none;
        font-weight: 600;
        font-size: 0.9375rem;
        transition: all 0.2s ease;
    }

    .mobile-menu-item:hover,
    .mobile-menu-item.active {
        background: var(--primary-blue);
        color: var(--white);
    }

    /* Mobile conversations section */
    .mobile-conversations {
        display: flex;
        flex-direction: column;
        gap: 4px;
        max-height: 300px;
        overflow-y: auto;
    }

    .mobile-conversations-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: var(--spacing-xs);
        background: var(--light-gray);
        border-radius: 8px;
    }

    .mobile-conversations-header h3 {
        font-size: 0.875rem;
        font-weight: 600;
        color: var(--dark);
        margin: 0;
    }

    .mobile-new-conversation-btn {
        width: 28px;
        height: 28px;
        background: var(--primary-blue);
        color: var(--white);
        border: none;
        border-radius: 6px;
        font-size: 1.25rem;
        font-weight: 600;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.2s ease;
    }

    .mobile-new-conversation-btn:hover {
        background: var(--dark-blue);
    }

    .mobile-conversations-list {
        display: flex;
        flex-direction: column;
        gap: 2px;
        padding: 0 var(--spacing-xs);
    }

    /* Mobile user info */
    .mobile-user-info {
        display: flex;
        flex-direction: column;
        gap: 6px;
        padding: var(--spacing-xs);
    }

    .mobile-user-email {
        font-size: 0.875rem;
        color: var(--gray);
        word-break: break-all;
        text-align: center;
    }

    .mobile-logout-btn {
        width: 100%;
        padding: 8px 12px;
        background: var(--white);
        color: var(--dark);
        border: 2px solid var(--light-gray);
        border-radius: 6px;
        font-weight: 600;
        font-size: 0.875rem;
        cursor: pointer;
        transition: all 0.2s ease;
    }

    .mobile-logout-btn:hover {
        background: var(--error);
        color: var(--white);
        border-color: var(--error);
    }

    /* Hide sidebar toggle button on mobile (now in hamburger menu) */
    .sidebar-toggle-btn {
        display: none !important;
    }

    /* Reduce hero badge size - single line, compact */
    .hero-badge-container {
        padding: 4px 0;
    }

    .hero-badge {
        font-size: 0.75rem !important;
        padding: 4px 12px !important;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 100%;
    }

    /* Reduce beta disclaimer - subtle and single line */
    .chat-footer {
        padding: 4px var(--spacing-base) !important;
    }

    .chat-footer p {
        font-size: 0.625rem !important;
        line-height: 1.2;
        opacity: 0.7;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .chat-title {
        font-size: var(--font-size-3xl);
    }

    .model-selector {
        flex: 1;
        font-size: var(--font-size-xs);
    }


    .chat-messages {
        padding: var(--spacing-base);
        gap: var(--spacing-base);
    }

    .message {
        max-width: 90%;
    }

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

    .quick-replies {
        padding: var(--spacing-base);
        gap: var(--spacing-xs);
    }

    .quick-reply-btn {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .chat-input-area {
        padding: var(--spacing-base);
    }

    .chat-input {
        font-size: 0.8125rem; /* 13px - smaller font for mobile to fit placeholder text */
    }

    .chat-input::placeholder {
        font-size: 0.8125rem; /* 13px - ensure placeholder is also smaller */
    }

    .input-note {
        font-size: 0.6875rem; /* 11px - smaller to save space */
        margin-top: 4px;
    }

    .submit-btn {
        min-width: 50px !important;
        max-width: 70px !important;
        padding: var(--spacing-xs) var(--spacing-xs) !important;
        font-size: 0.75rem !important;
        flex-shrink: 0;
    }
}

@media (max-width: 480px) {
    .chat-title {
        font-size: var(--font-size-2xl);
    }

    .message-content {
        font-size: var(--font-size-sm);
    }

    .quick-replies {
        flex-direction: column;
    }

    .quick-reply-btn {
        width: 100%;
    }
}

/* ============================================================================
   Print Styles
   ============================================================================ */

@media print {
    .chat-header,
    .chat-input-area,
    .chat-footer,
    .quick-replies {
        display: none;
    }

    .chat-messages {
        height: auto;
        overflow: visible;
    }

    .message {
        page-break-inside: avoid;
    }
}

/* ============================================================================
   Auth Overlay (Login + Waitlist on Chat Page)
   ============================================================================ */

.auth-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--spacing-lg);
    box-sizing: border-box;
}

.auth-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-elevated);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 420px;
    max-height: 90vh;
    overflow-y: auto;
}

.auth-logo {
    display: block;
    text-align: center;
    font-family: var(--font-display);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
    text-decoration: none;
    margin-bottom: var(--spacing-sm);
}

.auth-subtitle {
    text-align: center;
    color: var(--gray);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xl);
}

.auth-tabs {
    display: flex;
    margin-bottom: var(--spacing-lg);
    background: var(--light-gray);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs);
}

.auth-tab {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-base);
    border: none;
    background: transparent;
    color: var(--gray);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-primary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.auth-tab.active {
    background: var(--white);
    color: var(--primary-blue);
    box-shadow: var(--shadow-sm);
}

.auth-tab:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.auth-message {
    padding: var(--spacing-sm) var(--spacing-base);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-base);
    font-size: var(--font-size-sm);
    display: none;
}

.auth-message.error {
    display: block;
    background: #FEE2E2;
    color: #DC2626;
    border: 1px solid #FECACA;
}

.auth-message.success {
    display: block;
    background: #DCFCE7;
    color: #16A34A;
    border: 1px solid #BBF7D0;
}

.form-group {
    margin-bottom: var(--spacing-base);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--dark);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-base);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-primary);
    color: var(--dark);
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.auth-submit-btn {
    width: 100%;
    margin-top: var(--spacing-base);
}

.signup-disabled-notice {
    text-align: center;
    padding: var(--spacing-base);
    background: var(--light-gray);
    border-radius: var(--radius-md);
    color: var(--gray);
    font-size: var(--font-size-sm);
}

.auth-divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-xl) 0;
    color: var(--gray);
    font-size: var(--font-size-sm);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-light);
}

.auth-divider span {
    padding: 0 var(--spacing-base);
}

.waitlist-section h3 {
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--dark);
    margin-bottom: var(--spacing-xs);
}

.waitlist-section .waitlist-note {
    text-align: center;
    color: var(--gray);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-base);
}

.waitlist-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.waitlist-btn {
    background: var(--secondary-green);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.waitlist-btn:hover {
    background: #059669;
}

.waitlist-message {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    text-align: center;
}

.waitlist-message.success {
    background: #DCFCE7;
    color: #16A34A;
}

.waitlist-message.error {
    background: #FEE2E2;
    color: #DC2626;
}