/* ===== CSS RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Dark Theme Colors */
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #404040;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    --accent-primary: #007bff;
    --accent-secondary: #6c757d;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    
    /* Calculator Colors */
    --calc-display: #2d2d2d;
    --calc-btn-number: #404040;
    --calc-btn-operator: #ff9500;
    --calc-btn-equals: #ff9500;
    --calc-btn-clear: #a6a6a6;
    
    /* Chat Colors */
    --chat-message-sent: #007bff;
    --chat-message-received: #404040;
    --online-indicator: #28a745;
    --offline-indicator: #6c757d;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== UTILITY CLASSES ===== */
.hidden {
    display: none !important;
}

.screen {
    min-height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

/* ===== LOADING SCREEN ===== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--bg-secondary);
    border-top: 4px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== AUTHENTICATION SCREEN ===== */
.auth-container {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.auth-container h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--accent-primary), #0056b3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    font-size: 1rem;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.form-group input {
    padding: var(--spacing-md);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.form-group small {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

.auth-btn {
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--accent-primary), #0056b3);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.auth-switch {
    margin-top: var(--spacing-md);
    color: var(--text-secondary);
}

.auth-switch a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
}

.auth-switch a:hover {
    text-decoration: underline;
}

/* ===== CALCULATOR SCREEN ===== */
.calculator {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 350px;
}

.calculator-display {
    margin-bottom: var(--spacing-lg);
}

.calculator-display input {
    width: 100%;
    height: 80px;
    background-color: var(--calc-display);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 2rem;
    text-align: right;
    padding: 0 var(--spacing-md);
    font-family: 'Courier New', monospace;
}

.calculator-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.btn {
    height: 60px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.btn:hover {
    transform: scale(1.05);
}

.btn:active {
    transform: scale(0.95);
}

.btn-number {
    background-color: var(--calc-btn-number);
    color: var(--text-primary);
}

.btn-operator {
    background-color: var(--calc-btn-operator);
    color: var(--text-primary);
}

.btn-equals {
    background-color: var(--calc-btn-equals);
    color: var(--text-primary);
    grid-row: span 2;
    height: 128px;
}

.btn-clear {
    background-color: var(--calc-btn-clear);
    color: var(--bg-primary);
}

.btn-zero {
    grid-column: span 2;
}

.calculator-footer {
    display: flex;
    justify-content: center;
}

.logout-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--danger);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.875rem;
    transition: background-color var(--transition-fast);
}

.logout-btn:hover {
    background-color: #c82333;
}

/* ===== CHAT SCREEN ===== */
.chat-container {
    width: 100%;
    height: 100vh;
    max-width: 1200px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
}

.chat-header {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--bg-primary);
}

.back-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.back-btn:hover {
    background-color: var(--bg-secondary);
}

.chat-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.chat-main {
    flex: 1;
    display: flex;
    height: calc(100vh - 70px);
}

/* ===== USER LIST ===== */
.user-list-container {
    width: 300px;
    background-color: var(--bg-primary);
    border-right: 1px solid var(--bg-tertiary);
    display: flex;
    flex-direction: column;
}

.user-list-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--bg-tertiary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-primary);
}

.user-list-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.user-count {
    background-color: var(--success);
    color: var(--text-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    font-weight: 600;
}

.user-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.user-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
    margin-bottom: var(--spacing-xs);
    position: relative;
}

.user-item:hover {
    background-color: var(--bg-secondary);
    transform: translateX(4px);
}

.user-item.active {
    background-color: var(--accent-primary);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.user-item:active {
    transform: scale(0.98);
}

.user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), #0056b3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.25rem;
    margin-right: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

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

.user-name {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-status {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: var(--spacing-xs);
    flex-shrink: 0;
}

.status-indicator.online {
    background-color: var(--online-indicator);
    box-shadow: 0 0 6px var(--online-indicator);
}

.status-indicator.offline {
    background-color: var(--offline-indicator);
}

/* Notification dot for new messages */
.notification-dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 12px;
    height: 12px;
    background-color: var(--danger);
    border-radius: 50%;
    border: 2px solid var(--bg-primary);
    animation: pulse 2s infinite;
}

@keyframes notification-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0.7);
    }
    70% {
        box-shadow: 0 0 0 6px rgba(220, 53, 69, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0);
    }
}

/* ===== CHAT AREA ===== */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.chat-messages-container {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

.chat-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    color: var(--text-secondary);
}

.chat-welcome h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.chat-messages {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.message {
    display: flex;
    margin-bottom: var(--spacing-md);
}

.message.sent {
    justify-content: flex-end;
}

.message.received {
    justify-content: flex-start;
}

.message-bubble {
    max-width: 70%;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    word-wrap: break-word;
}

.message.sent .message-bubble {
    background-color: var(--chat-message-sent);
    color: var(--text-primary);
    border-bottom-right-radius: var(--spacing-xs);
}

.message.received .message-bubble {
    background-color: var(--chat-message-received);
    color: var(--text-primary);
    border-bottom-left-radius: var(--spacing-xs);
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
    text-align: right;
}

.message.received .message-time {
    text-align: left;
}

/* Temporary message styling */
.message.temp-message .message-bubble {
    opacity: 0.7;
    position: relative;
}

.message.temp-message .message-bubble::after {
    content: '⏳';
    position: absolute;
    bottom: 4px;
    right: 4px;
    font-size: 0.7rem;
    opacity: 0.6;
}

/* ===== MESSAGE INPUT ===== */
.message-input-container {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--bg-tertiary);
    background-color: var(--bg-secondary);
}

.message-form {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.message-form input {
    flex: 1;
    padding: var(--spacing-md);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-lg);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.message-form input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.message-form button {
    background-color: var(--accent-primary);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.25rem;
}

.message-form button:hover {
    background-color: #0056b3;
    transform: scale(1.05);
}

.message-form button:disabled {
    background-color: var(--accent-secondary);
    cursor: not-allowed;
    transform: none;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background-color: var(--danger);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    z-index: 1000;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    max-width: 400px;
}

.toast:not(.hidden) {
    transform: translateX(0);
}

.toast.success {
    background-color: var(--success);
}

.toast button {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== ERROR MESSAGES ===== */
.error-message {
    background-color: var(--danger);
    color: var(--text-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    text-align: center;
    font-size: 0.875rem;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .screen {
        padding: var(--spacing-sm);
    }
    
    .auth-container {
        padding: var(--spacing-lg);
    }
    
    .calculator {
        max-width: 100%;
    }
    
    .chat-container {
        border-radius: 0;
        height: 100vh;
        max-width: 100%;
        position: relative;
        overflow: hidden;
    }
    
    .chat-main {
        height: calc(100vh - 60px);
        position: relative;
        overflow: hidden;
    }
    
    .chat-header {
        padding: var(--spacing-md);
        position: relative;
        z-index: 10;
    }
    
    .chat-header h2 {
        font-size: 1.125rem;
    }
    
    /* Mobile Navigation - Messenger Style */
    .mobile-back-btn {
        display: none;
        background: none;
        border: none;
        color: var(--text-primary);
        font-size: 1.25rem;
        cursor: pointer;
        padding: var(--spacing-sm);
        border-radius: var(--radius-sm);
        transition: background-color var(--transition-fast);
        position: absolute;
        left: var(--spacing-md);
        top: 50%;
        transform: translateY(-50%);
    }
    
    .mobile-back-btn:hover {
        background-color: var(--bg-secondary);
    }
    
    /* Hide desktop menu toggle on mobile */
    .mobile-menu-toggle {
        display: none;
    }
    
    /* User List - Full screen on mobile initially */
    .user-list-container {
        width: 100%;
        position: absolute;
        top: 0;
        left: 0;
        height: 100%;
        z-index: 100;
        background-color: var(--bg-primary);
        transform: translateX(0%);
        transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        border-right: none;
    }
    
    .user-list-container.slide-out {
        transform: translateX(-100%);
    }
    
    /* Enhanced user list styling for mobile */
    .user-list-header {
        padding: var(--spacing-lg);
        background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
        border-bottom: 2px solid var(--bg-tertiary);
    }
    
    .user-list-header h3 {
        font-size: 1.5rem;
        font-weight: 700;
    }
    
    .user-list {
        padding: var(--spacing-md);
    }
    
    .user-item {
        padding: var(--spacing-lg);
        margin-bottom: var(--spacing-md);
        border-radius: var(--radius-lg);
        background-color: var(--bg-secondary);
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--bg-tertiary);
    }
    
    .user-item:hover {
        transform: scale(1.02);
        box-shadow: var(--shadow-md);
    }
    
    .user-item.active {
        background: linear-gradient(135deg, var(--accent-primary), #0056b3);
        transform: scale(1.02);
        box-shadow: var(--shadow-lg);
    }
    
    .user-avatar {
        width: 56px;
        height: 56px;
        font-size: 1.5rem;
        margin-right: var(--spacing-lg);
    }
    
    .user-name {
        font-size: 1.125rem;
        font-weight: 700;
    }
    
    .user-status {
        font-size: 0.875rem;
        margin-top: var(--spacing-xs);
    }
    
    /* Chat Area - Initially hidden, slides in from right */
    .chat-area {
        width: 100%;
        height: 100%;
        position: absolute;
        top: 0;
        left: 0;
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        background-color: var(--bg-secondary);
    }
    
    .chat-area.slide-in {
        transform: translateX(0%);
    }
    
    /* Enhanced chat messages for mobile */
    .chat-messages-container {
        padding: var(--spacing-lg);
    }
    
    .message {
        margin-bottom: var(--spacing-lg);
    }
    
    .message-bubble {
        max-width: 80%;
        padding: var(--spacing-md) var(--spacing-lg);
        border-radius: var(--radius-lg);
        font-size: 1rem;
        line-height: 1.5;
    }
    
    .message.sent .message-bubble {
        border-bottom-right-radius: var(--spacing-sm);
        box-shadow: var(--shadow-sm);
    }
    
    .message.received .message-bubble {
        border-bottom-left-radius: var(--spacing-sm);
        box-shadow: var(--shadow-sm);
    }
    
    /* Enhanced message input for mobile */
    .message-input-container {
        padding: var(--spacing-lg);
        background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
        border-top: 2px solid var(--bg-tertiary);
    }
    
    .message-form input {
        padding: var(--spacing-lg);
        font-size: 1rem;
        border-radius: var(--radius-lg);
    }
    
    .message-form button {
        width: 56px;
        height: 56px;
        font-size: 1.5rem;
    }
    
    /* Show back button when in chat view */
    .chat-container.in-chat .mobile-back-btn {
        display: block;
    }
    
    /* Hide calculator and user logout buttons when in chat */
    .chat-container.in-chat .back-btn,
    .chat-container.in-chat .chat-logout-btn {
        display: none;
    }
    
    /* Remove overlay - not needed for this design */
    .mobile-overlay {
        display: none;
    }
    
    .toast {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        left: var(--spacing-sm);
        max-width: none;
    }
    
    .message-bubble {
        max-width: 85%;
    }
    
    .btn {
        height: 50px;
        font-size: 1.125rem;
    }
    
    .btn-equals {
        height: 108px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-sm: 6px;
        --spacing-md: 12px;
        --spacing-lg: 18px;
        --spacing-xl: 24px;
    }
    
    .calculator-display input {
        height: 70px;
        font-size: 1.75rem;
    }
    
    .btn {
        height: 45px;
        font-size: 1rem;
    }
    
    .btn-equals {
        height: 98px;
    }
    
    .user-avatar {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
button:focus,
input:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --bg-primary: #000000;
        --bg-secondary: #1a1a1a;
        --bg-tertiary: #333333;
        --text-primary: #ffffff;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3) translateY(20px);
    }
    50% {
        opacity: 1;
        transform: scale(1.05) translateY(-5px);
    }
    70% {
        transform: scale(0.95) translateY(0);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 123, 255, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(0, 123, 255, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 123, 255, 0);
    }
}

.message.sent {
    animation: slideInFromRight 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.message.received {
    animation: slideInFromLeft 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.user-item {
    animation: fadeIn 0.3s ease;
}

/* Mobile specific animations */
@media (max-width: 768px) {
    .user-item {
        animation: bounceIn 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        animation-fill-mode: both;
    }
    
    .user-item:nth-child(1) { animation-delay: 0.1s; }
    .user-item:nth-child(2) { animation-delay: 0.2s; }
    .user-item:nth-child(3) { animation-delay: 0.3s; }
    .user-item:nth-child(4) { animation-delay: 0.4s; }
    .user-item:nth-child(5) { animation-delay: 0.5s; }
    
    .message-form button:hover {
        animation: pulse 1.5s infinite;
    }
    
    .status-indicator.online {
        animation: pulse 2s infinite;
    }
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

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