/*
 * konniGPT Enterprise CSS v8
 * © 2025 CCS.AI - Enterprise AI Assistant Stylesheet
 * 
 * Features: Accessibility, Performance, Design System, PWA Support
 * Complies with: WCAG 2.1 AA, Modern CSS Standards, Enterprise Security
 */

/* =====================================
   ENTERPRISE CSS CUSTOM PROPERTIES
   ===================================== */
:root {
    /* Core Brand Colors */
    --primary-brand: #3d3dff;
    --primary-brand-hover: #5a5aff;
    --primary-brand-active: #2626cc;
    --secondary-brand: #6a11cb;
    --accent-brand: #2575fc;
    
    /* Semantic Color System */
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    
    /* Light Theme Palette */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-subtle: #e2e8f0;
    --border-strong: #cbd5e1;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Component Specific Variables (Legacy Support) */
    --bg: var(--bg-primary);
    --text: var(--text-primary);
    --header-footer: var(--bg-secondary);
    --chat-bg: var(--bg-tertiary);
    --user-msg: var(--primary-brand);
    --assistant-msg: var(--bg-primary);
    --input-bg: var(--bg-primary);
    --button-bg: var(--primary-brand);
    --button-hover: var(--primary-brand-hover);
    --menu-bg: var(--bg-primary);
    --menu-text: var(--text-primary);
    --menu-border: var(--border-subtle);
    --popup-bg: var(--bg-primary);
    --popup-text: var(--text-primary);
    --popup-border: var(--border-subtle);
    --popup-titlebar-bg: #e3e6f6;
    --popup-titlebar-text: #222b4a;
    
    /* Layout Variables */
    --footer-height: 56px;
    --header-height: 64px;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    
    /* Background Gradient */
    --bg-gradient-color1: var(--secondary-brand);
    --bg-gradient-color2: var(--accent-brand);
    --bg-gradient-angle: 120deg;
    
    /* Typography Scale */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    
    /* Animation & Transition Easing */
    --easing-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --easing-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --easing-sharp: cubic-bezier(0.4, 0, 0.6, 1);
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 350ms;
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Dark Theme Palette */
.dark {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-subtle: #334155;
    --border-strong: #475569;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.5), 0 8px 10px -6px rgb(0 0 0 / 0.5);
    
    /* Component overrides for dark mode */
    --bg: var(--bg-primary);
    --text: var(--text-primary);
    --header-footer: var(--bg-secondary);
    --chat-bg: var(--bg-secondary);
    --user-msg: var(--primary-brand);
    --assistant-msg: var(--bg-tertiary);
    --input-bg: var(--bg-tertiary);
    --menu-bg: var(--bg-secondary);
    --menu-text: var(--text-primary);
    --menu-border: var(--border-subtle);
    --popup-bg: var(--bg-secondary);
    --popup-text: var(--text-primary);
    --popup-border: var(--border-subtle);
    --popup-titlebar-bg: #23263a;
    --popup-titlebar-text: #e3e6f6;
    
    /* Dark gradient */
    --bg-gradient-color1: #18192b;
    --bg-gradient-color2: #10101a;
}

/* =====================================
   ACCESSIBILITY & REDUCED MOTION
   ===================================== */

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .bg-move,
    .fade-in,
    .slide-in {
        animation: none !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-subtle: #000000;
        --border-strong: #000000;
        --text-secondary: var(--text-primary);
    }
    
    .dark {
        --border-subtle: #ffffff;
        --border-strong: #ffffff;
        --text-secondary: var(--text-primary);
    }
}

/* Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Skip navigation link */
.skip-nav {
    position: absolute;
    top: -40px;
    left: var(--space-4);
    background: var(--primary-brand);
    color: white;
    padding: var(--space-2) var(--space-4);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    z-index: var(--z-tooltip);
    transition: top var(--duration-fast) var(--easing-smooth);
}

.skip-nav:focus {
    top: var(--space-4);
}

/* =====================================
   ENTERPRISE RESET & BASE STYLES
   ===================================== */

/* Modern box model and scroll behavior */
*,
*::before,
*::after {
    box-sizing: border-box;
}

/* Root element optimizations */
html {
    font-size: 16px; /* Explicit base font size for rem calculations */
    scroll-behavior: smooth;
    text-size-adjust: 100%; /* Prevent font scaling in landscape */
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    tab-size: 4;
    -webkit-tap-highlight-color: transparent;
}

/* Body foundation */
html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
    min-height: 100vh;
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Helvetica Neue', sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    display: flex;
    flex-direction: column;
    touch-action: manipulation; /* Improves touch responsiveness */
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Enhanced body with gradient background */
body {
    background: linear-gradient(
        var(--bg-gradient-angle, 120deg), 
        var(--bg-gradient-color1, #6a11cb) 0%, 
        var(--bg-gradient-color2, #2575fc) 100%
    );
    background-size: 200% 200%;
    background-attachment: fixed;
    animation: bg-move 12s ease-in-out infinite alternate;
    transition: background var(--duration-slow) var(--easing-smooth);
    will-change: background-position;
}

/* Dark mode gradient override */
body.dark {
    --bg-gradient-color1: #18192b;
    --bg-gradient-color2: #10101a;
}

/* Gradient animation */
@keyframes bg-move {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

/* Focus management for accessibility */
:focus {
    outline: 2px solid var(--primary-brand);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--primary-brand);
    outline-offset: 2px;
}

/* Enhanced scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
    border-radius: var(--border-radius-sm);
}

::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: var(--border-radius-sm);
    transition: background var(--duration-fast) var(--easing-smooth);
}

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

/* Specific scrollbar styling for containers */
.scroll-container::-webkit-scrollbar-track {
    background: transparent;
}

.scroll-container::-webkit-scrollbar-thumb {
    background-color: var(--text-muted);
    border-radius: var(--border-radius-sm);
}

/* =====================================
   ENTERPRISE HEADER COMPONENT
   ===================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: var(--header-height);
    background: var(--header-footer);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
    padding: var(--space-2) var(--space-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: var(--z-fixed);
    transition: all var(--duration-normal) var(--easing-smooth);
    will-change: transform, background-color;
    padding-top: env(safe-area-inset-top);
}

.header h1,
.app-title {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.025em;
    flex: 1;
    text-align: center;
}

/* Enterprise hamburger menu */
.hamburger-button {
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--border-radius-sm);
    transition: all var(--duration-fast) var(--easing-smooth);
    position: relative;
}

.hamburger-button:hover {
    background: var(--bg-tertiary);
}

.hamburger-button:focus-visible {
    background: var(--bg-tertiary);
}

.hamburger-bar {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    margin: 2px 0;
    transition: all var(--duration-normal) var(--easing-smooth);
    border-radius: 1px;
}

.hamburger-button[aria-expanded="true"] .hamburger-bar:nth-child(1) {
    transform: rotate(45deg) translate(4.5px, 4.5px);
}

.hamburger-button[aria-expanded="true"] .hamburger-bar:nth-child(2) {
    opacity: 0;
}

.hamburger-button[aria-expanded="true"] .hamburger-bar:nth-child(3) {
    transform: rotate(-45deg) translate(4.5px, -4.5px);
}

/* Connection status indicator */
.connection-status {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius-sm);
    background: var(--bg-tertiary);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.connection-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-success);
    animation: pulse 2s infinite;
}

.connection-status.disconnected .connection-indicator {
    background: var(--color-error);
    animation: none;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Main menu navigation */
.main-menu {
    position: absolute;
    top: 100%;
    left: var(--space-4);
    background: var(--menu-bg);
    border: 1px solid var(--menu-border);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    padding: var(--space-2);
    z-index: var(--z-dropdown);
    transform-origin: top left;
    transition: all var(--duration-normal) var(--easing-smooth);
}

.main-menu.hidden {
    opacity: 0;
    visibility: hidden;
    transform: scale(0.95) translateY(-10px);
}

.menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: none;
    border: none;
    border-radius: var(--border-radius-sm);
    color: var(--menu-text);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: all var(--duration-fast) var(--easing-smooth);
}

.menu-item:hover,
.menu-item:focus-visible {
    background: var(--bg-tertiary);
    transform: translateX(2px);
}

.menu-item--danger {
    color: var(--color-error);
}

.menu-item--danger:hover,
.menu-item--danger:focus-visible {
    background: rgba(239, 68, 68, 0.1);
}

.menu-icon {
    font-size: var(--font-size-base);
    opacity: 0.8;
}

.menu-text {
    flex: 1;
}

/* =====================================
   ENTERPRISE FOOTER COMPONENT
   ===================================== */

.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: var(--footer-height);
    background: var(--header-footer);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-subtle);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
    padding: var(--space-2) var(--space-4);
    padding-bottom: calc(var(--space-2) + env(safe-area-inset-bottom, 0px));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-fixed);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--duration-normal) var(--easing-smooth);
    will-change: transform, opacity;
}

.footer.hide-footer {
    transform: translateY(100%);
    opacity: 0;
    pointer-events: none;
}

.footer p {
    margin: 0;
    text-align: center;
}

/* =====================================
   ENTERPRISE CHAT LAYOUT
   ===================================== */

.chat-wrapper {
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.chat-container {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 0;
  height: 100%;
  box-sizing: border-box;
  padding-bottom: 0 !important; /* padding-bottom entfernt, damit die Form direkt am unteren Rand sitzt */
}

#chat-box {
  flex: 1 1 auto;
  overflow-y: auto;
  margin-bottom: 0;
}

#chat-form {
  flex-shrink: 0;
  margin-bottom: 0;
  width: 100%;
  border: none;
  background: none;
}

.chat-container {
    display: flex;
    flex-direction: column;
    flex: 1 1 0%;
    height: 100%;
    min-height: calc(100vh - var(--header-height, 64px) - 24px); /* nutzt fast den gesamten Viewport */
    max-width: 900px;
    height: 100%;
    width: 100%;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    box-sizing: border-box;
    padding-bottom: 18px; /* kleiner Abstand zum unteren Rand */
    contain: layout style;
}

@media (max-width: 700px) {
    .chat-container {
        min-height: calc(100vh - var(--header-height, 56px) - 10px);
        padding-bottom: 10px;
    }
}

/* Dark mode chat container */
body.dark .chat-container {
    background: rgba(15, 23, 42, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 
        0 20px 25px -5px rgba(0, 0, 0, 0.4),
        0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

/* Chat content area */
#chat-box {
    background: transparent;
    border-radius: var(--border-radius-lg);
    padding: var(--space-4);
    flex: 1 1 0%;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    scroll-padding-bottom: 80px;
    margin: var(--space-1);
    min-height: 0;
    max-height: 100%;
    contain: layout style;
    scroll-behavior: smooth;
}

/* Enhanced scrollbar for chat */
#chat-box::-webkit-scrollbar {
    width: 6px;
}

#chat-box::-webkit-scrollbar-track {
    background: transparent;
    margin: var(--space-2);
}

#chat-box::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: var(--border-radius-sm);
}

#chat-box::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.message,
form,
.chat-tabs,
#chat-form,
.input,
button,
input[type="text"],
input[type="search"],
input[type="color"],
input[type="range"],
select {
    background: var(--assistant-msg, #f0f0f0);
}

.message.user {
    background: var(--button-bg);
    color: #fff;
}

body.dark .message {
    background: var(--assistant-msg, #2b2b2b);
    color: var(--text);
}

body.dark .message.user {
    background: var(--button-bg);
    color: #fff;
}

.chat-tabs {
    background: var(--chat-bg);
}

form,
#chat-form {
    background: var(--chat-bg);
    position: relative;
    z-index: 2;
}

.message {
    box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.07);
    transition: transform 0.18s cubic-bezier(.4, 0, .2, 1);
    will-change: transform;
}

body.dark .message {
    box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.18);
}

.message {
    max-width: 75%;
    padding: 12px 16px;
    border-radius: 16px;
    line-height: 1.4;
    opacity: 0;
    transform: translateY(10px);
    animation: fadeInUp 0.3s ease forwards;
}

.message.user {
    align-self: flex-end;
    background-color: var(--button-bg);
    color: #fff;
}

.message.assistant {
    align-self: flex-start;
    background-color: var(--assistant-msg);
}

.message-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 6px;
    font-size: 0.93em;
    opacity: 0.7;
    user-select: none;
}

.message-timestamp {
    color: var(--text);
    font-family: 'Segoe UI', monospace;
    font-size: 0.93em;
}

.copy-icon {
    cursor: pointer;
    color: var(--button-bg);
    display: flex;
    align-items: center;
    transition: color 0.2s;
    margin-left: 2px;
    outline: none;
}

.copy-icon:hover,
.copy-icon:focus {
    color: var(--button-hover);
}

.copy-icon.copied {
    color: #4caf50;
}

.speak-icon {
    cursor: pointer;
    color: var(--button-bg);
    display: flex;
    align-items: center;
    transition: color 0.2s;
    margin-left: 2px;
    outline: none;
}

.speak-icon:hover,
.speak-icon:focus {
    color: var(--button-hover);
}

.share-icon {
    cursor: pointer;
    color: var(--button-bg);
    display: flex;
    align-items: center;
    transition: color 0.2s;
    margin-left: 2px;
    outline: none;
}

.share-icon:hover,
.share-icon:focus {
    color: var(--button-hover);
}

body.dark .message .share-icon {
    color: #fff !important;
}

body.dark .message .share-icon:hover,
body.dark .message .share-icon:focus {
    color: var(--button-hover) !important;
}

body.dark .message-timestamp {
    color: var(--menu-text);
}

body.dark .copy-icon {
    color: var(--button-bg);
}

body.dark .copy-icon:hover,
body.dark .copy-icon:focus {
    color: var(--button-hover);
}

body.dark .copy-icon,
body.dark .speak-icon {
    color: #fff !important;
}

body.dark .copy-icon:hover,
body.dark .copy-icon:focus,
body.dark .speak-icon:hover,
body.dark .speak-icon:focus {
    color: var(--button-hover) !important;
}

form {
    display: flex;
    border-top: 1px solid #ccc;
    padding: 8px;
    background-color: var(--chat-bg);
    gap: 0;
}

input {
    flex: 1;
    padding: 12px 16px;
    font-size: 16px;
    border: none;
    background-color: var(--input-bg);
    color: var(--text);
    border-top-left-radius: 12px;
    border-bottom-left-radius: 12px;
    outline: none;
    transition: box-shadow 0.2s ease;
}

input:focus {
    box-shadow: 0 0 0 2px var(--button-bg);
}

button {
    background-color: var(--button-bg);
    color: #fff;
    border: none;
    padding: 0 20px;
    font-size: 18px;
    cursor: pointer;
    border-top-right-radius: 12px;
    border-bottom-right-radius: 12px;
    transition: background 0.2s ease, transform 0.1s ease;
}

button:hover {
    background-color: var(--button-hover);
    transform: translateY(-1px);
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 600px) {
    .chat-container {
        margin: 0 8px;
    }
}

@media (max-width: 400px) {
    .typing-indicator span {
        width: 10px;
        height: 10px;
    }
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 6px 0 6px 0;
    padding: 10px 16px;
    background-color: var(--assistant-msg);
    color: var(--text);
    border-radius: 16px;
    width: fit-content;
    animation: fadeIn 0.3s ease-in-out;
    align-self: flex-start;
    opacity: 1;
    transition: opacity 0.4s ease-in-out;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background-color: var(--text);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
    display: inline-block;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

.typing-indicator.fade-out {
    opacity: 0;
}

@keyframes typing {

    0%,
    80%,
    100% {
        transform: scale(0.6);
        opacity: 0.3;
    }

    40% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.chat-tabs {
    display: flex;
    gap: 0.5rem;
    padding: 0.5rem;
    overflow-x: auto;
    overflow-y: visible;
    background: var(--chat-bg);
    border-bottom: 1px solid #ccc;
    position: relative;
    z-index: 10;
}

.chat-tabs-wrapper {
    position: relative;
    width: 100%;
    height: 60px;
    display: flex;
    align-items: stretch;
    background: var(--chat-bg);
    border-bottom: 1.5px solid #ccc;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    border-top-left-radius: 18px;
    border-top-right-radius: 18px;
    z-index: 20;
    display: flex;
    align-items: center;
    padding: 0 0 0 0;
}

.tabs-scroll,
#chat-tabs {
    display: flex;
    flex-direction: row;
    align-items: center;
    overflow-x: auto;
    overflow-y: overlay;
    padding-left: 16px;
    margin-right: 52px;
    height: 100%;
    scrollbar-gutter: stable;
    min-width: 0;
    width: 100%;
}

.chat-tab {
    flex: 0 0 140px;
    min-width: 140px;
    max-width: 140px;
    height: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 6px;
    white-space: nowrap;
    user-select: none;
    position: relative; /* <--- HINZUGEFÜGT */
    background: color-mix(in srgb, var(--chat-bg) 90%, var(--text) 10%);
    border-radius: 1rem;
    color: var(--text);
    box-shadow: none;
    border: none;
    transition: background 0.2s, color 0.2s;
    overflow: visible !important; /* Badge darf überstehen */
}

.chat-tab.active {
    background: var(--button-bg);
    color: #fff;
    font-weight: bold;
}

.chat-tab.add-tab {
    position: relative;
    /* Bestehende Styles bleiben erhalten */
}

.chat-tab.add-tab {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 48px;
    min-width: 48px;
    max-width: 48px;
    height: 100%;
    margin: 0;
    padding: 0;
    z-index: 2;
    background: var(--button-bg, #3d3dff);
    color: #fff;
    border-radius: 0 10px 0 0;
    box-shadow: -2px 0 6px rgba(0, 0, 0, 0.04);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    pointer-events: auto;
    border: none;
    max-height: none;
    height: 100%;
}

.chat-tab.add-tab svg {
    height: 60%;
    width: 60%;
    display: block;
}

.tabs-scroll {
    margin-right: 52px;
}

.chat-tabs-wrapper {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

#tabs-blocker {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.38);
    z-index: 10;
    pointer-events: auto;
    display: none;
    border-radius: 10px;
}

.chat-tab {
    background: color-mix(in srgb, var(--chat-bg) 90%, var(--text) 10%);
    padding: 0.4rem 0.8rem;
    border-radius: 1rem;
    cursor: pointer;
    position: relative;
    transition: background 0.2s, color 0.2s;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 4px;
    min-width: 72px;
    height: 40px;
    max-height: 40px;
    line-height: 40px;
    justify-content: center;
    text-align: center;
    box-sizing: border-box;
    overflow: hidden;
}

.chat-tab span {
    white-space: nowrap;
    overflow: visible;
    text-overflow: unset;
    display: block;
    width: 100%;
}

.chat-tab:hover {
    background: color-mix(in srgb, var(--chat-bg) 70%, var(--text) 30%);
}

.chat-tab.active {
    background: var(--button-bg);
    color: white;
    font-weight: bold;
}

.chat-tab.loading .tab-loading-bar {
    height: 4px;
    top: 0;
    left: 0;
    right: 0;
    border-radius: 4px 4px 0 0;
    z-index: 2;
}

.tab-menu-button {
    margin-left: auto;
    cursor: pointer;
    padding: 0 6px;
    font-size: 18px;
    user-select: none;
}

.tab-menu-button svg,
.chat-tab.add-tab svg {
    display: block;
    margin: auto;
}

.tab-context-menu {
    position: absolute;
    background: var(--menu-bg);
    color: var(--menu-text);
    border: 1px solid var(--menu-border);
    border-radius: 6px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    display: none;
    flex-direction: column;
    z-index: 10000;
    min-width: 120px;
    font-size: 14px;
    opacity: 0;
    transform: translateY(-10px) scale(0.98);
    pointer-events: none;
    transition: opacity 0.18s cubic-bezier(.4, 0, .2, 1), transform 0.18s cubic-bezier(.4, 0, .2, 1);
    z-index: 1000;
}

.tab-context-menu.visible {
    display: flex;
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.tab-context-menu .menu-item {
    padding: 8px 12px;
    cursor: pointer;
}

.tab-context-menu .menu-item:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

body.dark .tab-context-menu {
    background: var(--menu-bg);
    color: var(--menu-text);
    border-color: var(--menu-border);
}

.chat-tab.add-tab {
    font-weight: bold;
    background: var(--button-bg);
    color: white;
}

.export-button {
    font-size: 0.7rem;
    margin-left: 6px;
    background: transparent;
    color: var(--text);
    border: 1px solid var(--text);
    border-radius: 8px;
    padding: 2px 6px;
    cursor: pointer;
}

.export-button:hover {
    background: var(--button-bg);
    color: white;
}

body.theme-transition * {
    transition: background-color 0.3s ease, color 0.3s ease;
}

.switch-icon {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.2rem;
    cursor: pointer;
    position: relative;
}

.switch-icon input[type="checkbox"] {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.switch-icon .slider {
    width: 48px;
    height: 26px;
    background-color: #ccc;
    border-radius: 34px;
    position: relative;
    transition: background-color 0.3s;
}

.switch-icon .slider::before {
    content: "";
    position: absolute;
    height: 20px;
    width: 20px;
    left: 3px;
    top: 3px;
    background-color: white;
    border-radius: 50%;
    transition: transform 0.3s ease;
}

.switch-icon input:checked+.slider::before {
    transform: translateX(22px);
}

.switch-icon input:checked+.slider {
    background-color: var(--button-bg);
}

.switch-icon .icon {
    transition: opacity 0.2s ease;
}

.switch-icon .sun {
    opacity: 1;
}

.switch-icon .moon {
    opacity: 0.4;
}

.switch-icon input:checked~.moon {
    opacity: 1;
}

.switch-icon input:checked~.sun {
    opacity: 0.4;
}

#burger-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--menu-bg);
    color: var(--menu-text);
    border: 1px solid var(--menu-border);
    border-radius: 8px;
    padding: 10px;
    z-index: 9999;
    width: 200px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    opacity: 0;
    transform: translateY(-10px) scale(0.98);
    pointer-events: none;
    transition: opacity 0.22s cubic-bezier(.4, 0, .2, 1), transform 0.22s cubic-bezier(.4, 0, .2, 1);
}

#burger-menu div {
    margin: 5px 0;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: 4px;
}

#burger-menu div:hover {
    background-color: var(--button-hover);
    color: var(--menu-text);
}

body:not(.dark) #burger-menu div:hover {
    color: #fff !important;
}

#burger-menu:not(.hidden) {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

#burger-menu.menu-fade-in {
    animation: burgerMenuFadeIn 0.32s cubic-bezier(.4, 0, .2, 1);
}

@keyframes burgerMenuFadeIn {
    from {
        opacity: 0;
        transform: translateY(-16px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

#overlay-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 500;
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
    opacity: 0;
    transition: opacity 0.35s cubic-bezier(.4, 0, .2, 1), backdrop-filter 0.5s cubic-bezier(.4, 0, .2, 1), -webkit-backdrop-filter 0.5s cubic-bezier(.4, 0, .2, 1);
}

#overlay-layer:not(.hidden) {
    opacity: 1;
    pointer-events: auto;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

@keyframes popup-fade-in {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.92);
        filter: blur(2px);
    }

    60% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.03);
        filter: blur(0.5px);
    }

    100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
        filter: blur(0);
    }
}

.popup {
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 85vw;
    max-width: 600px;
    background: var(--menu-bg);
    color: var(--menu-text);
    padding: 0;
    border-radius: 8px;
    border: 1px solid var(--menu-border);
    box-shadow: 0 8px 40px 0 rgba(76, 140, 255, 0.13), 0 2px 16px #0002;
    z-index: 10000;
    animation: popup-fade-in 0.55s cubic-bezier(.33, 1.6, .6, 1) both;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - var(--header-height, 64px) - var(--footer-height, 56px) - 4vh);
    min-height: 120px;
    overflow: hidden;
}

.popup-content {
    overflow: auto;
    max-height: 100%;
}

@media (max-width: 700px) {
    .popup {
        width: 98vw;
        max-width: 98vw;
        max-height: calc(100vh - var(--header-height, 56px) - var(--footer-height, 56px) - 2vh);
    }
}

.popup-titlebar {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    height: 48px;
    background: var(--popup-titlebar-bg);
    color: var(--popup-titlebar-text);
    border-bottom: 1px solid var(--menu-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0;
    z-index: 10;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
    font-weight: 500;
    font-size: 1.13rem;
    user-select: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    flex: 0 0 auto;
}

.popup-title {
    flex: 1;
    text-align: left;
    font-size: 1.08rem;
    font-weight: 500;
    color: var(--popup-titlebar-text);
    padding-left: 18px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    height: 100%;
    display: flex;
    align-items: center;
}

.popup-close-x {
    position: relative;
    top: 0;
    right: 0;
    width: 48px;
    height: 48px;
    background: var(--button-bg);
    border: none;
    cursor: pointer;
    z-index: 11;
    padding: 0;
    opacity: 1;
    transition: background 0.2s, color 0.2s;
    border-top-right-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.popup-close-x .close-icon {
    position: relative;
    width: 22px;
    height: 22px;
    display: inline-block;
}

.popup-close-x .close-icon::before,
.popup-close-x .close-icon::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 3px;
    height: 18px;
    background: #fff !important;
    border-radius: 2px;
    transition: background 0.2s;
    transform: translate(-50%, -50%) rotate(45deg);
}

.popup-close-x .close-icon::after {
    transform: translate(-50%, -50%) rotate(-45deg);
}

.popup-close-x:hover,
.popup-close-x:focus {
    background: var(--button-hover);
}

body.dark .popup-close-x {
    background: var(--button-bg);
}

body.dark .popup-close-x:hover,
body.dark .popup-close-x:focus {
    background: var(--button-hover);
}

.popup-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    padding: 28px 24px 24px 24px;
    position: relative;
    flex: 1 1 auto;
    overflow: auto;
    min-height: 0;
    max-height: 100%;
    width: 100%;
}

.popup-content p,
.popup-content ul,
.popup-content ol,
.popup-content li,
.popup-content h1,
.popup-content h2,
.popup-content h3,
.popup-content h4,
.popup-content h5,
.popup-content h6 {
    margin: 0 0 1em 0;
    line-height: 1.6;
}

.popup-content ul,
.popup-content ol {
    padding-left: 2em;
}

.popup-content pre,
.popup-content code {
    font-family: 'Fira Mono', 'Consolas', 'Menlo', monospace;
    background: #f7f7f7;
    color: #222;
    border-radius: 4px;
    padding: 0.2em 0.5em;
    font-size: 0.98em;
    white-space: pre-wrap;
    word-break: break-word;
    margin-bottom: 1em;
    display: block;
}

.popup-content br {
    display: inline;
}

.popup-content {
    white-space: normal;
    word-break: break-word;
}

.popup-buttons {
    display: grid;
    grid-auto-flow: column;
    gap: 16px;
    justify-content: center;
    margin-top: 10px;
}

.popup-buttons button {
    min-width: 90px;
}

.popup button {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    background-color: var(--button-bg);
    color: white;
    cursor: pointer;
}

body.dark .popup {
    background-color: var(--menu-bg);
    color: var(--menu-text);
    border: 1px solid var(--menu-border);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
}

body.dark .popup button {
    background-color: var(--button-bg);
    color: white;
}

body.dark .popup button:hover {
    background-color: var(--button-hover);
}

.popup button:hover {
    background-color: var(--button-hover);
}

.dark .message.user {
    background-color: var(--button-bg);
    color: #ffffff;
}

@media (prefers-reduced-motion: reduce) {

    .message,
    .typing-indicator span {
        animation: none !important;
        transition: none !important;
    }
}

.input-error {
    border: 2px solid red !important;
    background-color: #ffe6e6;
    color: #b00020;
}

.hidden {
    display: none;
}

.chat-tab {
    background-color: rgba(0, 0, 0, 0.05);
    background: color-mix(in srgb, var(--chat-bg) 90%, var(--text) 10%);
}

.is-hidden {
    display: none !important;
}

.loader-invisible {
    display: none !important;
}

.rename-input {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
    border-radius: 8px;
    border: 1px solid var(--button-bg);
    padding: 4px 8px;
    font-size: 1em;
    outline: none;
}

@keyframes popup-fade-in {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.92);
        filter: blur(2px);
    }

    60% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.03);
        filter: blur(0.5px);
    }

    100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
        filter: blur(0);
    }
}

body.dark #burger-menu div:hover {
    background: var(--button-hover) !important;
}

.chat-tab,
.popup,
.button,
.menu-item {
    transition: all 0.3s ease-in-out;
}

.chat-tab.loading {
    background: #ccc !important;
    color: #888;
    position: relative;
    overflow: hidden !important;
}

.tab-loading-bar {
    position: absolute;
    left: 0;
    top: 0;
    width: 0;
    height: 4px;
    background: var(--button-bg, #4b8cff);
    z-index: 1;
    animation: tab-loading-bar-anim 1.2s linear forwards;
    border-radius: 4px 4px 0 0;
}

@keyframes tab-loading-bar-anim {
    from {
        width: 0;
    }

    to {
        width: 100%;
    }
}

/* --- NEU: Dediziertes Styling für den "Neuer Tab"-Button im Ladezustand --- */

/* 1. Spinner-Animation definieren */
@keyframes add-tab-spinner-anim {
    to {
        transform: rotate(360deg);
    }
}

/* 2. Den Button im Ladezustand anpassen */
.chat-tab.add-tab.loading {
    cursor: wait; /* Zeigt dem Nutzer, dass eine Aktion läuft */
    filter: brightness(1.05); /* Leichte Aufhellung statt Ausgrauen */
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
}

/* 3. Das normale "+"-Icon im Ladezustand ausblenden */
.chat-tab.add-tab.loading svg {
    display: none;
}

/* 4. Einen Spinner mit einem ::before Pseudo-Element erstellen und anzeigen */
.chat-tab.add-tab.loading::before {
    content: '';
    box-sizing: border-box;
    position: absolute;
    top: 50%;
    left: 50%;
    width: 24px;  /* Größe des Spinners */
    height: 24px;
    margin-top: -12px; /* Hälfte der Höhe, um zu zentrieren */
    margin-left: -12px;/* Hälfte der Breite, um zu zentrieren */
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff; /* Die "aktive" Farbe des Spinners */
    animation: add-tab-spinner-anim .7s linear infinite;
}


.chat-tab.loading span,
.chat-tab.loading .tab-menu-button {
    position: relative;
    z-index: 2;
}

.tab-loading-dots {
    display: inline-block;
    margin-left: 8px;
}

.tab-loading-dots span {
    display: inline-block;
    width: 6px;
    height: 6px;
    margin: 0 1px;
    border-radius: 50%;
    background: #888;
    opacity: 0.5;
    animation: tab-dot-bounce 1s infinite;
}

.tab-loading-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.tab-loading-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes tab-dot-bounce {

    0%,
    80%,
    100% {
        opacity: 0.5;
        transform: translateY(0);
    }

    40% {
        opacity: 1;
        transform: translateY(-5px);
    }
}

.reset-loader {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 60px;
    margin-top: 24px;
}

.reset-loader-track {
    width: 100%;
    max-width: 320px;
    min-width: 120px;
    height: 16px;
    background: #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--menu-border);
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.reset-loader-bar {
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--button-bg), var(--button-hover));
    border-radius: 8px 0 0 8px;
    transition: width 1.2s cubic-bezier(.4, 0, .2, 1);
    position: absolute;
    left: 0;
    top: 0;
}

.reset-loader.active .reset-loader-bar {
    width: 100%;
}

#content,
#content2 {
    padding: 0 !important;
    margin: 0 !important;
}

#content *,
#content2 * {
    margin-top: 0 !important;
    margin-bottom: 0 !important;
    padding: 0 !important;
    box-sizing: border-box;
}

#language-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background: var(--input-bg);
    color: var(--text);
    border: 1.5px solid var(--menu-border);
    border-radius: 8px;
    padding: 10px 38px 10px 14px;
    font-size: 1rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.22s cubic-bezier(.4, 0, .2, 1), box-shadow 0.22s cubic-bezier(.4, 0, .2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    cursor: pointer;
    min-width: 120px;
    max-width: 220px;
    margin-top: 6px;
    margin-bottom: 8px;
    background-image: linear-gradient(45deg, transparent 49%, var(--menu-border) 50%, var(--menu-border) 51%, transparent 52%), linear-gradient(135deg, transparent 49%, var(--menu-border) 50%, var(--menu-border) 51%, transparent 52%);
    background-position: right 16px top 55%, right 22px top 55%;
    background-size: 7px 7px, 7px 7px;
    background-repeat: no-repeat;
}

#language-select:focus {
    border-color: var(--button-bg);
    box-shadow: 0 0 0 2px var(--button-bg), 0 2px 8px rgba(0, 0, 0, 0.06);
}

#language-select:disabled {
    background: #e0e0e0;
    color: #aaa;
    cursor: not-allowed;
    opacity: 0.7;
}

body.dark #language-select {
    background: var(--input-bg);
    color: var(--text);
    border-color: var(--menu-border);
}

body.dark #language-select:focus {
    border-color: var(--button-bg);
    box-shadow: 0 0 0 2px var(--button-bg), 0 2px 8px rgba(0, 0, 0, 0.12);
}

#language-select {
    transition: border-color 0.22s cubic-bezier(.4, 0, .2, 1), box-shadow 0.22s cubic-bezier(.4, 0, .2, 1), background-color 0.22s cubic-bezier(.4, 0, .2, 1);
}

#color-scheme-picker {
    border: 1.5px solid var(--menu-border);
    border-radius: 6px;
    background: var(--input-bg);
    cursor: pointer;
    transition: border-color 0.2s;
}

#color-scheme-picker:focus {
    border-color: var(--button-bg);
    outline: none;
}

#reset-color-scheme {
    padding: 6px 14px;
    border-radius: 8px;
    border: 1px solid var(--button-bg);
    background: transparent;
    color: var(--button-bg);
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

#reset-color-scheme:hover {
    background: var(--button-bg);
    color: #fff;
}

input[type="color"] {
    -webkit-appearance: none;
    appearance: none;
    border: none;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    overflow: hidden;
    cursor: pointer;
    background: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.10);
    transition: box-shadow 0.18s, border 0.18s;
    margin: 0 6px;
    padding: 0;
    display: inline-block;
}

#color-scheme-picker,
#bg-gradient-color1,
#bg-gradient-color2 {
    width: 38px !important;
    height: 38px !important;
    border-radius: 50% !important;
    min-width: 38px !important;
    min-height: 38px !important;
    max-width: 38px !important;
    max-height: 38px !important;
    padding: 0 !important;
    margin: 0 6px !important;
    display: inline-block !important;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    box-sizing: border-box;
}

input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    box-sizing: border-box;
}

input[type="color"]::-moz-color-swatch {
    border: none;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    box-sizing: border-box;
}

input[type="color"]::-ms-color-swatch {
    border: none;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    box-sizing: border-box;
}

input[type="color"]:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--button-bg, #3d3dff);
    border: 2px solid var(--button-bg, #3d3dff);
}

body.dark input[type="color"] {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.22);
    border: 1.5px solid #444;
}

@media (prefers-color-scheme: dark) {
    ::-webkit-scrollbar {
        width: 8px;
        background: transparent;
    }

    ::-webkit-scrollbar-thumb {
        background: #23272e;
        border-radius: 6px;
    }

    ::-webkit-scrollbar-thumb:hover {
        background: #444a60;
    }

    * {
        scrollbar-width: thin;
        scrollbar-color: #23272e transparent;
    }
}

@media (prefers-color-scheme: light),
not all and (prefers-color-scheme: dark) {
    ::-webkit-scrollbar {
        width: 8px;
        background: transparent;
    }

    ::-webkit-scrollbar-thumb {
        background: #e0e0e0;
        border-radius: 6px;
    }

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

    * {
        scrollbar-width: thin;
        scrollbar-color: #e0e0e0 transparent;
    }
}

#hamburger-button {
    width: 48px;
    height: 48px;
    min-width: 48px;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    background: var(--button-bg);
    color: #fff;
    padding: 0;
    margin-right: 8px;
    font-size: 2rem;
    transition: background 0.18s;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(61, 61, 255, 0.10);
}

#hamburger-button:hover,
#hamburger-button:focus {
    background: var(--button-hover);
    color: #fff;
    outline: none;
    box-shadow: 0 2px 8px rgba(61, 61, 255, 0.18);
}

#hamburger-button svg {
    width: 32px;
    height: 32px;
    display: block;
    margin: auto;
}

.hamburger-button {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
}

.burger-bar {
    display: block;
    width: 26px;
    height: 3.5px;
    background: #fff;
    border-radius: 2px;
    margin: 3.5px 0;
    transition: all 0.2s;
}

button,
.chat-tab,
.copy-icon,
.speak-icon,
.share-icon,
.theme-toggle,
.tab-menu-button,
.hamburger-button,
input[type="text"],
input[type="search"],
select {
    transition-property: background-color, border-color, color, transform, box-shadow, opacity, filter;
    transition-duration: 0.2s;
    transition-timing-function: ease-in-out;
}

.chat-tab:not(.active):not(.add-tab):hover {
    transform: translateY(-2px);
    background-color: color-mix(in srgb, var(--chat-bg, #f8f8fa) 80%, var(--text, #222) 20%);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.06);
}

body.dark .chat-tab:not(.active):not(.add-tab):hover {
    background-color: color-mix(in srgb, var(--chat-bg, #2a2a2e) 85%, var(--text, #f0f0f0) 15%);
}

.chat-tab.add-tab:hover {
    transform: scale(1.05);
    filter: brightness(1.15);
}

.chat-tab.add-tab:active {
    transform: scale(0.98);
    filter: brightness(0.9);
}

.tab-menu-button {
    padding: 4px;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.tab-menu-button:hover {
    transform: scale(1.15);
    background-color: rgba(0, 0, 0, 0.07);
}

body.dark .tab-menu-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.tab-menu-button:active {
    transform: scale(0.95);
}

button:hover,
.button-like:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
}

button:active,
.button-like:active {
    filter: brightness(0.95);
    transform: translateY(0px) scale(0.98);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.copy-icon,
.speak-icon,
.share-icon {
    padding: 4px;
    border-radius: 50%;
}

.copy-icon:hover,
.speak-icon:hover,
.share-icon:hover {
    transform: scale(1.2) rotate(3deg);
    color: var(--button-bg, #3d3dff);
    background-color: rgba(0, 0, 0, 0.05);
}

body.dark .copy-icon:hover,
body.dark .speak-icon:hover,
body.dark .share-icon:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

.copy-icon:active,
.speak-icon:active,
.share-icon:active {
    transform: scale(0.9);
}

.copy-icon.copied {
    color: #4CAF50;
    transform: scale(1.15);
}

.hamburger-button:hover .burger-bar {
    background-color: var(--button-bg, #3d3dff);
}

.hamburger-button:hover .burger-bar:nth-child(1) {
    transform: translateX(-3px) scaleX(0.9);
}

.hamburger-button:hover .burger-bar:nth-child(3) {
    transform: translateX(3px) scaleX(0.9);
}

.hamburger-button:active {
    transform: scale(0.92);
}

.hamburger-button.open .burger-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger-button.open .burger-bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger-button.open .burger-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.theme-toggle:hover {
    transform: rotate(25deg) scale(1.15);
    color: var(--button-bg, #3d3dff);
}

.theme-toggle:active {
    transform: rotate(0deg) scale(0.95);
}

.theme-toggle svg {
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.theme-toggle:hover svg {
    transform: scale(1.1);
}

@keyframes fadeInMessage {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.99);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.message {
    animation: fadeInMessage 0.45s ease-out forwards;
}

#user-input:focus,
textarea:focus {
    border-color: var(--button-bg, #3d3dff);
    box-shadow: 0 0 0 3.5px color-mix(in srgb, var(--button-bg, #3d3dff) 25%, transparent);
}

.tab-context-menu {
    opacity: 0;
    transform: translateY(8px) scale(0.97);
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s 0.18s;
    visibility: hidden;
    pointer-events: none;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.12);
}

.tab-context-menu.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition-delay: 0s;
    visibility: visible;
    pointer-events: auto;
}

.tab-context-menu .menu-item {
    transition: background-color 0.15s ease, padding-left 0.18s ease, color 0.15s ease;
    padding: 8px 12px;
}

.tab-context-menu .menu-item:hover {
    background-color: color-mix(in srgb, var(--button-bg, #3d3dff) 15%, transparent);
    padding-left: 16px;
    color: var(--button-bg, #3d3dff);
}

body.dark .tab-context-menu .menu-item:hover {
    color: var(--text, #f0f0f0);
}

.tab-loading-dots span {
    animation: tabLoadingBounce 1.4s infinite ease-in-out both;
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: currentColor;
    margin: 0 2px;
}

.tab-loading-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.tab-loading-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes tabLoadingBounce {

    0%,
    80%,
    100% {
        transform: scale(0.3);
        opacity: 0.5;
    }

    40% {
        transform: scale(1.0);
        opacity: 1;
    }
}

html {
    scroll-behavior: smooth;
}

/* --- NEU: Styling für Codeblöcke in Chatnachrichten --- */

/* Container für den Codeblock (<pre>) */
.message pre {
    background-color: rgba(0, 0, 0, 0.05); /* Leichter Hintergrund zur Abhebung */
    border-radius: 8px;
    padding: 12px;
    font-size: 0.9em;
    
    overflow-x: auto; /* Fügt eine horizontale Scrollleiste hinzu, nur wenn nötig */

    /* Stellt sicher, dass der Block selbst nicht überläuft */
    max-width: 100%; 
    box-sizing: border-box; /* Padding und Border in die Breite einrechnen */
    
    /* Sorgt für korrektes Code-Rendering */
    white-space: pre;
    word-wrap: normal;
}

/* Das eigentliche <code>-Element im Block */
.message pre code {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
    padding: 0; /* Padding wird vom <pre>-Elternteil übernommen */
    background: none;
    border-radius: 0;
}

/* Dark-Mode-Anpassungen für Codeblöcke */
.dark .message pre {
    background-color: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* --- NEU: Styles für Einstellungs-Popup (ersetzt Inline-Styles) --- */

.settings-container {
    width: 100%;
    max-width: 340px;
}

.settings-group {
    margin-top: 24px;
}

.settings-group--large-margin {
    margin-top: 32px;
}

.settings-label {
    font-weight: 500;
    display: block;
    margin-bottom: 8px;
}

#language-select {
    margin-top: 6px;
    width: 100%;
    max-width: 220px;
}

#reset-color-scheme {
    margin-left: 18px;
}

.gradient-controls-container {
    display: flex;
    gap: 18px;
    align-items: center;
    flex-wrap: wrap;
}

.gradient-control {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.gradient-control--extra-margin {
    margin-left: 12px;
}

.gradient-control-label {
    font-size: 0.95em;
    margin-bottom: 2px;
}

#bg-gradient-angle {
    width: 140px;
}

#bg-gradient-angle-value {
    font-size: 0.9em;
    margin-top: 2px;
}

.checkbox-label {
    font-size: 0.95em;
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

#bg-gradient-darken {
    margin-right: 6px;
}

#reset-bg-gradient {
    margin-top: 8px;
}

/* --- Tab-Badge für neue KI-Nachrichten --- */
.tab-badge {
  position: absolute;
  top: -7px;      /* NEU: weiter nach oben */
  right: -7px;    /* NEU: weiter nach rechts */
  width: 22px;
  min-width: 22px;
  max-width: 22px;
  height: 22px;
  background: #e53935;
  color: #fff;
  font-size: 1rem;
  font-weight: bold;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  box-shadow: 0 2px 8px rgba(229,57,53,0.18);
  border: 2px solid #fff;
  opacity: 1;
  pointer-events: none;
  transition: opacity 0.22s cubic-bezier(.4,0,.2,1), transform 0.22s cubic-bezier(.4,0,.2,1);
  transform: scale(1);
  padding: 0;          /* Fix: Kein Padding */
  line-height: 22px;   /* Fix: Vertikal zentriert */
  box-sizing: border-box; /* Fix: Border und Größe */
}

.tab-badge-animate-in {
  animation: tabBadgeIn 0.32s cubic-bezier(.4,0,.2,1);
}
@keyframes tabBadgeIn {
  0% { opacity: 0; transform: scale(0.5);}
 70% { opacity: 1; transform: scale(1.15);}
 100% { opacity: 1; transform: scale(1);}
}

.tab-badge.tab-badge-animate-out {
  animation: tabBadgeOut 0.22s cubic-bezier(.4,0,.2,1) forwards;
}
@keyframes tabBadgeOut {
  0% { opacity: 1; transform: scale(1);}
  100% { opacity: 0; transform: scale(0.7);}
}

/* =====================================
   ENTERPRISE MESSAGE SYSTEM
   ===================================== */

/* Base message styles */
.message {
    max-width: 85%;
             padding: var(--space-3) var(--space-4);
    border-radius: var(--border-radius-lg);
    line-height: 1.5;
    font-size: var(--font-size-base);
    word-wrap: break-word;
    overflow-wrap: break-word;
    position: relative;
    contain: layout style;
    
    /* Animation setup */
   
   
   
    opacity: 0;
    transform: translateY(10px);
    animation: messageSlideIn var(--duration-normal) var(--easing-smooth) forwards;
    
    /* Enhanced shadow system */
    box-shadow: var(--shadow-md);
    transition: all var(--duration-fast) var(--easing-smooth);
}

.message:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

/* User messages */
.message.user {
    align-self: flex-end;
    background: linear-gradient(135deg, var(--primary-brand) 0%, var(--primary-brand-hover) 100%);
    color: white;
    border-bottom-right-radius: var(--border-radius-sm);
}

.message.user::before {
    content: '';
    position: absolute;
    bottom: 8px;
    right: -8px;
    width: 0;
    height: 0;
    border-left: 8px solid var(--primary-brand);
    border-bottom: 8px solid transparent;
}

/* Assistant messages */
.message.assistant {
    align-self: flex-start;
    background: var(--assistant-msg);
    color: var(--text-primary);
    border-bottom-left-radius: var(--border-radius-sm);
    border: 1px solid var(--border-subtle);
}

.message.assistant::before {
    content: '';
    position: absolute;
    bottom: 8px;
    left: -8px;
    width: 0;
    height: 0;
    border-right: 8px solid var(--assistant-msg);
    border-bottom: 8px solid transparent;
}

/* Dark mode message adjustments */
body.dark .message {
    box-shadow: var(--shadow-lg);
}

body.dark .message.assistant {
    background: var(--bg-tertiary);
    border-color: var(--border-subtle);
}

body.dark .message.assistant::before {
    border-right-color: var(--bg-tertiary);
}

/* Message states */
.message.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-error);
    color: var(--color-error);
}

.message.loading {
    opacity: 0.7;
    animation: pulse 1.5s ease-in-out infinite;
}

/* Message metadata */
.message-meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
    opacity: 0.7;
    user-select: none;
}

.message-timestamp {
    color: currentColor;
    font-family: ui-monospace, 'SF Mono', 'Monaco', 'Cascadia Code', 'Roboto Mono', monospace;
    font-size: var(--font-size-xs);
    font-weight: 500;
}

/* Copy message functionality */
.copy-message-btn {
    position: absolute;
    top: var(--space-2);
    right: var(--space-2);
    background: rgba(0, 0, 0, 0.1);
    border: none;
    border-radius: var(--border-radius-sm);
    padding: var(--space-1);
    cursor: pointer;
    opacity: 0;
    transition: all var(--duration-fast) var(--easing-smooth);
    font-size: var(--font-size-sm);
}

.message:hover .copy-message-btn {
    opacity: 1;
}

.copy-message-btn:hover {
    background: rgba(0, 0, 0, 0.2);
    transform: scale(1.1);
}

/* Typing indicator */
.typing-indicator {
    align-self: flex-start;
    max-width: 60px;
    padding: var(--space-3);
    background: var(--assistant-msg);
    border-radius: var(--border-radius-lg);
    border-bottom-left-radius: var(--border-radius-sm);
    animation: messageSlideIn var(--duration-normal) var(--easing-smooth) forwards;
}

.typing-dots {
    display: flex;
    gap: var(--space-1);
    align-items: center;
    justify-content: center;
}

.typing-dots span {
    width: 6px;
    height: 6px;
    background: var(--text-secondary);
    border-radius: 50%;
    animation: typingDots 1.4s ease-in-out infinite;
}

.typing-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

/* Code blocks in messages */
.message pre {
    background: rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius-sm);
    padding: var(--space-3);
    margin: var(--space-2) 0;
    overflow-x: auto;
    font-family: ui-monospace, 'SF Mono', 'Monaco', 'Cascadia Code', 'Roboto Mono', monospace;
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

body.dark .message pre {
    background: rgba(255, 255, 255, 0.1);
}

.message code {
    background: rgba(0, 0, 0, 0.1);
    padding: 0.125em 0.25em;
    border-radius: 3px;
    font-family: ui-monospace, 'SF Mono', 'Monaco', 'Cascadia Code', 'Roboto Mono', monospace;
    font-size: 0.9em;
}

body.dark .message code {
    background: rgba(255, 255, 255, 0.15);
}

/* Message animations */
@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes typingDots {
    0%, 60%, 100% {
        transform: scale(1);
        opacity: 0.4;
    }
    30% {
        transform: scale(1.2);
        opacity: 1;
    }
}

/* Legacy animation support */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =====================================
   NOSCRIPT OVERLAY ENHANCEMENT
   ===================================== */

.noscript-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
}

.noscript-message {
    max-width: 500px;
    text-align: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius-lg);
    padding: var(--space-8);
    box-shadow: var(--shadow-xl);
}

.noscript-message h1 {
    color: var(--color-error);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-2xl);
}

.noscript-message p {
    margin-bottom: var(--space-4);
    line-height: 1.6;
    color: var(--text-secondary);
}

.noscript-message a {
    color: var(--primary-brand);
    text-decoration: none;
    font-weight: 600;
}

.noscript-message a:hover {
    text-decoration: underline;
}

/* =====================================
   ENTERPRISE RESPONSIVE DESIGN
   ===================================== */

/* Mobile-first responsive breakpoints */
@media (max-width: 768px) {
    .chat-wrapper {
        padding: calc(var(--header-height) + var(--space-2)) var(--space-2) calc(var(--footer-height) + var(--space-2)) var(--space-2);
    }
    
    .chat-container {
        border-radius: var(--border-radius-lg);
        margin: 0;
    }
    
    #chat-box {
        padding: var(--space-3);
        gap: var(--space-2);
    }
    
    .message {
        max-width: 90%;
        padding: var(--space-2) var(--space-3);
        font-size: var(--font-size-sm);
    }
    
    .header h1,
    .app-title {
        font-size: var(--font-size-lg);
    }
    
    .main-menu {
        left: var(--space-2);
        right: var(--space-2);
        min-width: auto;
    }
}

/* Tablet optimizations */
@media (min-width: 769px) and (max-width: 1024px) {
    .chat-container {
        max-width: 700px;
    }
    
    .message {
        max-width: 80%;
    }
}

/* Desktop optimizations */
@media (min-width: 1025px) {
    .chat-container {
        max-width: 900px;
    }
    
    .message {
        max-width: 75%;
    }
    
    /* Enhanced hover states for desktop */
    .message:hover {
        transform: translateY(-2px);
    }
    
    .hamburger-button:hover {
        transform: scale(1.05);
    }
}

/* Large screen optimizations */
@media (min-width: 1400px) {
    .chat-wrapper {
        padding: calc(var(--header-height) + var(--space-6)) var(--space-6) calc(var(--footer-height) + var(--space-6)) var(--space-6);
    }
    
    .chat-container {
        max-width: 1000px;
    }
}

/* =====================================
   PWA & MOBILE OPTIMIZATIONS
   ===================================== */

/* iOS safe area support */
@supports (padding: max(0px)) {
    .header {
        padding-top: max(var(--space-2), env(safe-area-inset-top));
    }
    
    .footer {
        padding-bottom: max(var(--space-2), env(safe-area-inset-bottom));
    }
    
    .chat-wrapper {
        padding-top: calc(var(--header-height) + max(var(--space-4), env(safe-area-inset-top)));
        padding-bottom: calc(var(--footer-height) + max(var(--space-4), env(safe-area-inset-bottom)));
    }
}

/* Landscape mobile optimization */
@media (max-height: 500px) and (orientation: landscape) {
    .header {
        height: 48px;
        --header-height: 48px;
    }
    
    .footer {
        height: 40px;
        --footer-height: 40px;
    }
    
    .chat-wrapper {
        padding: calc(48px + var(--space-2)) var(--space-2) calc(40px + var(--space-2)) var(--space-2);
    }
}

/* Touch device optimizations */
@media (pointer: coarse) {
    .hamburger-button {
        width: 44px;
        height: 44px;
        padding: var(--space-3);
    }
    
    .menu-item {
        padding: var(--space-4);
        font-size: var(--font-size-base);
    }
    
    .copy-message-btn {
        padding: var(--space-2);
        opacity: 1; /* Always visible on touch devices */
    }
}

/* Hover capability detection */
@media (hover: hover) {
    .copy-message-btn {
        opacity: 0;
    }
    
    .message:hover .copy-message-btn {
        opacity: 1;
    }
}

/* =====================================
   PERFORMANCE OPTIMIZATIONS
   ===================================== */

/* GPU acceleration for smooth animations */
.message,
.hamburger-button,
.chat-container,
.header,
.footer {
    will-change: transform;
    transform: translateZ(0);
}

/* CSS containment for performance */
.chat-container {
    contain: layout style paint;
}

.message {
    contain: layout style;
}

/* Reduce layout thrashing */
.chat-tabs-wrapper,
#chat-box,
.chat-form {
    contain: layout;
}

/* =====================================
   PRINT STYLES
   ===================================== */

@media print {
    body {
        background: white !important;
        color: black !important;
    }
    
    .header,
    .footer,
    .hamburger-button,
    .main-menu,
    .overlay-layer {
        display: none !important;
    }
    
    .chat-wrapper {
        padding: 0 !important;
    }
    
    .chat-container {
        background: transparent !important;
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        border-radius: 0 !important;
    }
    
    .message {
        background: #f5f5f5 !important;
        color: black !important;
        box-shadow: none !important;
        border: 1px solid #ddd !important;
        page-break-inside: avoid;
    }
    
    .message.user {
        background: #e0e0e0 !important;
    }
}

/* =====================================
   UTILITY CLASSES
   ===================================== */

.hidden {
    display: none !important;
}

.invisible {
    visibility: hidden !important;
}

.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
    cursor: wait;
}

.shimmer {
    background: linear-gradient(90deg, 
        var(--bg-secondary) 25%, 
        var(--bg-tertiary) 50%, 
        var(--bg-secondary) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite ease-in-out;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Error states */
.error-state {
    color: var(--color-error);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-error);
    border-radius: var(--border-radius-sm);
    padding: var(--space-3);
    text-align: center;
}

/* Success states */
.success-state {
    color: var(--color-success);
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--color-success);
    border-radius: var(--border-radius-sm);
    padding: var(--space-3);
    text-align: center;
}

/* =====================================
   LEGACY BROWSER SUPPORT
   ===================================== */

/* Fallbacks for older browsers */
@supports not (backdrop-filter: blur(20px)) {
    .chat-container {
        background: rgba(255, 255, 255, 0.9) !important;
    }
    
    body.dark .chat-container {
        background: rgba(15, 23, 42, 0.9) !important;
    }
    
    .header,
    .footer {
        background: var(--header-footer) !important;
    }
}

/* Flexbox fallback */
@supports not (display: flex) {
    .header {
        display: block;
        text-align: center;
    }
    
    .chat-wrapper {
        display: block;
    }
    
    .message {
        display: inline-block;
        width: 75%;
    }
}

/* CSS Grid fallback for older browsers */
@supports not (display: grid) {
    .gradient-controls-container {
        display: block;
    }
    
    .gradient-control {
        display: inline-block;
        width: 48%;
        margin: 1%;
    }
}

/* =====================================
   ENTERPRISE MESSAGE ACTION BUTTONS
   ===================================== */

.message-action {
  background: none;
  border: none;
  color: var(--button-bg, #3d3dff);
  font-size: 1.15em;
  padding: 4px 8px;
  margin: 0 2px;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
  outline: none;
  box-shadow: none;
}
.message-action:hover, .message-action:focus-visible {
  background: var(--button-hover, #e6eaff);
  color: var(--button-bg, #3d3dff);
  box-shadow: 0 2px 8px rgba(61,61,255,0.07);
}
.message-action:active {
  background: var(--button-bg, #3d3dff);
  color: #fff;
}
body.dark .message-action {
  color: var(--button-bg, #7ca7ff);
}
body.dark .message-action:hover, body.dark .message-action:focus-visible {
  background: rgba(61,61,255,0.12);
  color: var(--button-bg, #7ca7ff);
}
body.dark .message-action:active {
  background: var(--button-bg, #7ca7ff);
  color: #fff;
}

.menu-footer {
  margin-top: 24px;
  padding: 12px 0 0 0;
  text-align: center;
  font-size: 0.98em;
  color: var(--text-muted, #888);
  border-top: 1px solid var(--border-subtle, #eee);
}
.menu-footer p {
  margin: 0;
  font-size: 0.98em;
  color: var(--text-muted, #888);
  display: inline-block;
}
#language-emoji {
  font-size: 1.2em;
  margin-left: 6px;
}
@media (max-width: 700px) {
  .menu-footer {
    font-size: 0.95em;
    padding-bottom: 8px;
  }
}