/* ========================================
   SOLVERPRO SERVER - MONOCHROMATIC DARK THEME
   ======================================== */

:root {
    /* Core Dark Monochromatic Palette */
    --bg-darkest: #0a0a0a;
    --bg-darker: #111111;
    --bg-dark: #1a1a1a;
    --bg-medium: #2a2a2a;
    --bg-light: #3a3a3a;
    --bg-lighter: #4a4a4a;
    --bg-lightest: #5a5a5a;
    /* Text Colors */
    --text-primary: #cccccc;
    --text-secondary: #999999;
    --text-muted: #666666;
    --text-dim: #444444;
    /* Border Colors */
    --border-dark: #222222;
    --border-medium: #333333;
    --border-light: #444444;
    /* State Colors (monochromatic) */
    --accent-primary: #666666;
    --accent-secondary: #555555;
    --accent-hover: #777777;
    --accent-active: #888888;
    /* Status Colors (subtle grays) */
    --status-online: #666666;
    --status-typing: #555555;
    --status-error: #444444;
    --status-success: #777777;
    /* Effects */
    --shadow-light: rgba(0, 0, 0, 0.3);
    --shadow-medium: rgba(0, 0, 0, 0.5);
    --shadow-heavy: rgba(0, 0, 0, 0.7);
    /* Typography */
    --font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 14px;
    --font-size-small: 12px;
    --font-size-large: 16px;
    --font-size-xl: 18px;
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ========================================
   GLOBAL RESET & BASE STYLES
   ======================================== */

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

    *:focus {
        outline: 2px solid var(--accent-primary);
        outline-offset: 2px;
    }

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    background-color: var(--bg-darkest);
    color: var(--text-primary);
    line-height: 1.5;
    height: 100vh;
    overflow: hidden;
}

/* ========================================
   SCROLLBAR STYLING
   ======================================== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

    ::-webkit-scrollbar-thumb:hover {
        background: var(--bg-lighter);
    }

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--bg-light) var(--bg-dark);
}

/* ========================================
   THEME TOGGLE
   ======================================== */

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1050;
    border: 2px solid var(--border-medium);
    background-color: var(--bg-medium);
    color: var(--text-primary);
    border-radius: 50px;
    padding: 0.5rem 1rem;
    box-shadow: 0 0.25rem 0.75rem var(--shadow-medium);
    transition: all var(--transition-normal);
}

    .theme-toggle:hover {
        background-color: var(--bg-light);
        color: var(--text-primary);
        transform: scale(1.05);
    }

.theme-icon {
    transition: transform var(--transition-normal);
}

.theme-toggle:hover .theme-icon {
    transform: rotate(180deg);
}

/* ========================================
   SINGLE ROW NAVIGATION STYLES
   ======================================== */

.navbar-single-row {
    background-color: var(--bg-darker);
    border-bottom: 2px solid var(--border-medium);
    box-shadow: 0 2px 4px var(--shadow-medium);
    padding: var(--spacing-sm) 0;
    min-height: 60px;
}

    .navbar-single-row .container-fluid {
        display: flex;
        align-items: center;
        gap: var(--spacing-md);
    }

.navbar-brand-compact {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--font-size-large);
    flex-shrink: 0;
    min-width: 120px;
}

    .navbar-brand-compact .brand-text {
        font-weight: 600;
    }

.nav-input-section {
    flex: 1;
    max-width: 600px;
    margin: 0 var(--spacing-md);
}

.input-group-compact {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.message-input-nav {
    flex: 1;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-medium);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 6px;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    height: 40px;
}

    .message-input-nav:focus {
        background-color: var(--bg-medium);
        border-color: var(--accent-primary);
        color: var(--text-primary);
        box-shadow: 0 0 0 0.2rem rgba(102, 102, 102, 0.25);
        outline: none;
    }

    .message-input-nav::placeholder {
        color: var(--text-muted);
    }

.btn-send, .btn-stop {
    background-color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
    color: var(--text-primary);
    padding: var(--spacing-sm);
    border-radius: 6px;
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

    .btn-send:hover:not(:disabled), .btn-stop:hover:not(:disabled) {
        background-color: var(--accent-hover);
        border-color: var(--accent-hover);
        color: var(--text-primary);
    }

    .btn-send:disabled, .btn-stop:disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }

.nav-controls-compact {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

.nav-item-compact {
    position: relative;
}

.nav-btn {
    background-color: var(--bg-medium);
    border: 1px solid var(--border-medium);
    color: var(--text-primary);
    padding: var(--spacing-sm);
    border-radius: 6px;
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    position: relative;
}

    .nav-btn:hover {
        background-color: var(--bg-light);
        border-color: var(--border-light);
        color: var(--text-primary);
    }

    .nav-btn:focus {
        color: var(--text-primary);
        background-color: var(--bg-light);
        border-color: var(--border-light);
    }

.nav-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    font-size: 0.6rem;
    padding: 0.2rem 0.3rem;
    border-radius: 50px;
    min-width: 16px;
    text-align: center;
    line-height: 1;
}

/* Statistics Navigation */
.stats-nav {
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--border-medium);
    padding: var(--spacing-xs) 0;
}

.stats-row {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    min-width: 60px;
    flex: 1;
}

.stat-number {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-primary);
    display: block;
    line-height: 1.2;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 0.125rem;
}

/* ========================================
   DROPDOWN STYLES
   ======================================== */

.dropdown-menu {
    background-color: var(--bg-medium);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    box-shadow: 0 0.5rem 1rem var(--shadow-medium);
    border-radius: 8px;
    padding: 0.5rem 0;
    margin-top: 0.5rem;
}

.custom-dropdown-menu {
    min-width: 280px;
    max-height: 400px;
    overflow-y: auto;
}

.ai-provider-menu {
    min-width: 320px;
}

.dropdown-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    position: relative;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
}

    .dropdown-item:hover {
        background-color: var(--bg-light);
        color: var(--text-primary);
    }

    .dropdown-item:focus {
        background-color: var(--bg-light);
        color: var(--text-primary);
        outline: none;
    }

    .dropdown-item.selected {
        background-color: var(--bg-lighter);
        color: var(--text-primary);
    }

        .dropdown-item.selected::after {
            content: "✓";
            position: absolute;
            right: 0.75rem;
            font-weight: bold;
            color: var(--accent-primary);
        }

.dropdown-divider {
    margin: 0.5rem 0;
    border-color: var(--border-light);
}

.dropdown-header {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.8rem;
    padding: 0.5rem 1rem 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Provider Info Styles */
.provider-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
}

.provider-logo {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
    flex-shrink: 0;
}

.provider-details {
    flex: 1;
    min-width: 0;
}

.provider-name {
    font-weight: 600;
    font-size: 0.9rem;
    line-height: 1.2;
    color: var(--text-primary);
}

.provider-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.1;
}

.status-indicator {
    font-size: 1rem;
    margin-left: auto;
}

    .status-indicator.status-online {
        color: var(--accent-active);
    }

    .status-indicator.status-busy {
        color: var(--text-secondary);
    }

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

/* Action Info Styles */
.action-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.action-icon {
    width: 18px;
    flex-shrink: 0;
}

/* ========================================
   STATISTICS BAR
   ======================================== */

.statistics-bar {
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--border-medium);
    padding: var(--spacing-sm) 0;
}

.stats-row {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: var(--spacing-md);
}

.stat-item {
    text-align: center;
    min-width: 80px;
}

.stat-number {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-primary);
    display: block;
    line-height: 1.2;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 0.125rem;
}

/* ========================================
   CHAT CONTAINER
   ======================================== */

.chat-container {
    height: calc(100vh - 120px);
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    gap: var(--spacing-md);
}

/* ========================================
   CHAT MESSAGES
   ======================================== */

.chat-messages {
    flex: 1;
    overflow-y: auto;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-medium);
    border-radius: 8px;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.welcome-message {
    text-align: center;
    color: var(--text-secondary);
    padding: var(--spacing-xl);
    border: 1px dashed var(--border-light);
    border-radius: 8px;
    background-color: var(--bg-medium);
}

    .welcome-message i {
        font-size: 2rem;
        color: var(--accent-primary);
        margin-bottom: var(--spacing-sm);
    }

    .welcome-message h5 {
        margin-bottom: var(--spacing-xs);
        color: var(--text-primary);
    }

/* Message Styles */
.message-wrapper {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.message {
    max-width: 85%;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 8px;
    word-wrap: break-word;
    position: relative;
    line-height: 1.4;
}

    .message.user {
        align-self: flex-end;
        background-color: var(--bg-medium);
        border: 1px solid var(--border-light);
    }

    .message.assistant {
        align-self: flex-start;
        background-color: var(--bg-lighter);
        border: 1px solid var(--border-light);
    }

    .message.system {
        align-self: center;
        background-color: var(--bg-medium);
        border: 1px solid var(--border-medium);
        color: var(--text-muted);
        font-style: italic;
        text-align: center;
        max-width: 60%;
    }

.message-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-small);
    color: var(--text-muted);
}

.message-content {
    margin-bottom: var(--spacing-xs);
}

.message-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-small);
    color: var(--text-muted);
}

.message-time {
    font-size: var(--font-size-small);
    color: var(--text-dim);
}

.message-actions {
    display: flex;
    gap: var(--spacing-xs);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.message-wrapper:hover .message-actions {
    opacity: 1;
}

.message-action {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: 3px;
    transition: all var(--transition-fast);
}

    .message-action:hover {
        background-color: var(--bg-light);
        color: var(--text-primary);
    }

/* Streaming message animation */
.message.streaming::after {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    animation: pulse 1.5s infinite;
    margin-left: var(--spacing-xs);
}

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

    50% {
        opacity: 0.3;
    }
}

/* ========================================
   STATUS BAR
   ======================================== */

.status-bar {
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-top: 1px solid var(--border-medium);
    background-color: var(--bg-darker);
    color: var(--text-muted);
    font-size: var(--font-size-small);
}

.status-info {
    display: flex;
    gap: var(--spacing-md);
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--status-typing);
}

    .typing-indicator i {
        animation: pulse 1s infinite;
    }

/* ========================================
   SETTINGS OVERLAY
   ======================================== */

.settings-overlay {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background-color: var(--bg-darker);
    border-left: 1px solid var(--border-medium);
    transition: right var(--transition-normal);
    z-index: 1001;
    overflow-y: auto;
}

    .settings-overlay.show {
        right: 0;
    }

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

    .settings-header h5 {
        margin: 0;
        color: var(--text-primary);
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }

.settings-content {
    padding: var(--spacing-md);
}

.setting-group {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-dark);
}

    .setting-group:last-child {
        border-bottom: none;
    }

.setting-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.setting-value {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
}

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

    .setting-controls .btn {
        background-color: var(--bg-medium);
        border: 1px solid var(--border-medium);
        color: var(--text-primary);
        width: 32px;
        height: 32px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 4px;
    }

        .setting-controls .btn:hover {
            background-color: var(--bg-light);
            border-color: var(--border-light);
            color: var(--text-primary);
        }

.color-picker {
    width: 40px;
    height: 32px;
    border: 1px solid var(--border-medium);
    border-radius: 4px;
    background-color: var(--bg-medium);
    cursor: pointer;
}

.form-check-input {
    background-color: var(--bg-medium);
    border: 1px solid var(--border-medium);
}

    .form-check-input:checked {
        background-color: var(--accent-primary);
        border-color: var(--accent-primary);
    }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-sm);
    background-color: var(--bg-medium);
    border-radius: 4px;
    border: 1px solid var(--border-medium);
}

.stat-number {
    display: block;
    font-weight: 600;
    font-size: var(--font-size-large);
    color: var(--accent-primary);
}

.stat-label {
    font-size: var(--font-size-small);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.setting-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

    .setting-actions .btn {
        background-color: var(--bg-medium);
        border: 1px solid var(--border-medium);
        color: var(--text-primary);
        padding: var(--spacing-xs) var(--spacing-sm);
        border-radius: 4px;
        font-size: var(--font-size-small);
    }

        .setting-actions .btn:hover {
            background-color: var(--bg-light);
            border-color: var(--border-light);
            color: var(--text-primary);
        }

/* ========================================
   OVERLAY BACKDROP
   ======================================== */

.overlay-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

    .overlay-backdrop.show {
        opacity: 1;
        visibility: visible;
    }

/* ========================================
   TOAST NOTIFICATIONS
   ======================================== */

.toast {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-medium);
    color: var(--text-primary);
}

.toast-header {
    background-color: var(--bg-medium);
    border-bottom: 1px solid var(--border-medium);
    color: var(--text-primary);
}

.toast-body {
    color: var(--text-primary);
}

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

@media (max-width: 1200px) {
    .nav-text span {
        font-size: 0.9rem;
    }

    .nav-selected-indicator {
        font-size: 0.7rem;
    }

    .nav-link-custom {
        min-width: 100px;
        height: 45px;
    }
}

@media (max-width: 992px) {
    .navbar-brand h4 {
        font-size: 1.1rem;
    }

    .nav-link-custom {
        min-width: 80px;
        height: 42px;
        padding: 0.4rem 0.6rem;
    }

    .nav-text span {
        font-size: 0.85rem;
    }

    .nav-selected-indicator {
        display: none;
    }

    .navbar-nav {
        gap: 0.25rem !important;
    }

    .statistics-bar {
        padding: 0.25rem 0;
    }

    .stats-row {
        gap: var(--spacing-sm);
    }

    .stat-number {
        font-size: 1.1rem;
    }

    .stat-label {
        font-size: 0.65rem;
    }

    .chat-container {
        height: calc(100vh - 140px);
        padding: var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    .theme-toggle {
        top: 10px;
        right: 10px;
        padding: 0.4rem 0.8rem;
    }

        .theme-toggle span {
            display: none;
        }

    .navbar-brand h4 {
        font-size: 1rem;
    }

    .navbar-brand .bi {
        font-size: 1.2rem;
    }

    .navbar-nav {
        flex-wrap: wrap;
        gap: 0.2rem !important;
    }

    .nav-link-custom {
        min-width: 70px;
        height: 38px;
        padding: 0.3rem 0.5rem;
    }

    .nav-text span {
        font-size: 0.8rem;
    }

    .nav-icon {
        font-size: 1rem;
    }

    .nav-badge {
        font-size: 0.6rem;
        padding: 0.2rem 0.3rem;
        min-width: 16px;
    }

    .dropdown-menu {
        min-width: 250px;
        font-size: 0.9rem;
    }

    .custom-dropdown-menu {
        min-width: 250px;
    }

    .ai-provider-menu {
        min-width: 280px;
    }

    .stats-row {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .stat-item {
        min-width: 60px;
    }

    .stat-number {
        font-size: 1rem;
    }

    .message {
        max-width: 95%;
    }

    .settings-overlay {
        width: 100%;
        right: -100%;
    }

    .chat-container {
        height: calc(100vh - 130px);
    }
}

@media (max-width: 576px) {
    .navbar-custom {
        padding: 0.3rem 0;
        min-height: 60px;
    }

    .container-fluid {
        padding: 0.5rem;
    }

    .navbar-brand h4 {
        font-size: 0.9rem;
    }

    .navbar-brand .me-2 {
        margin-right: 0.25rem !important;
    }

    .navbar-nav {
        justify-content: center;
        width: 100%;
        margin-top: 0.5rem;
    }

    .nav-link-custom {
        min-width: 60px;
        height: 35px;
        padding: 0.25rem 0.4rem;
        flex-direction: column;
        gap: 0.125rem;
    }

    .nav-text {
        text-align: center;
    }

        .nav-text span {
            font-size: 0.7rem;
            line-height: 1;
        }

    .nav-icon {
        font-size: 0.9rem;
    }

    .nav-badge {
        position: static;
        font-size: 0.55rem;
        padding: 0.1rem 0.25rem;
        margin-top: 0.125rem;
    }

    .statistics-bar {
        padding: 0.25rem 0;
    }

    .stats-row {
        justify-content: space-between;
    }

    .stat-item {
        min-width: 50px;
    }

    .stat-number {
        font-size: 0.9rem;
    }

    .stat-label {
        font-size: 0.6rem;
    }

    .input-group {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .message-input {
        min-width: 100%;
        margin-bottom: var(--spacing-xs);
    }

    .dropdown-menu {
        font-size: 0.85rem;
    }

    .dropdown-item {
        padding: 0.6rem 0.8rem;
    }

    .provider-logo {
        width: 24px;
        height: 24px;
        font-size: 0.6rem;
    }

    .provider-name {
        font-size: 0.85rem;
    }

    .provider-desc {
        font-size: 0.7rem;
    }

    .chat-container {
        height: calc(100vh - 120px);
        padding: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .navbar-custom {
        min-height: 55px;
    }

    .navbar-brand h4 {
        font-size: 0.8rem;
    }

    .nav-link-custom {
        min-width: 45px;
        height: 32px;
        padding: 0.2rem 0.3rem;
    }

    .nav-text span {
        font-size: 0.65rem;
    }

    .nav-icon {
        font-size: 0.8rem;
    }

    .statistics-bar {
        display: none; /* Hide stats on very small screens */
    }

    .chat-container {
        height: calc(100vh - 80px);
    }
}

/* ========================================
   ACCESSIBILITY IMPROVEMENTS
   ======================================== */

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

.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;
}

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

@media print {
    .navbar-dark,
    .input-section,
    .status-bar,
    .settings-overlay,
    .overlay-backdrop {
        display: none !important;
    }

    .chat-container {
        height: auto !important;
        padding: 0 !important;
    }

    .chat-messages {
        border: none !important;
        background: transparent !important;
        overflow: visible !important;
    }

    .message {
        break-inside: avoid;
        color: #000 !important;
        background: #fff !important;
        border: 1px solid #ccc !important;
    }
}

/* ========================================
   TWO-COLUMN LAYOUT FOR CODE ANSWERS
   ======================================== */

/* Answer container - switches between single and two-column */
.answer-container {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: var(--spacing-md);
}

.answer-container.has-code {
    flex-direction: row;
    gap: var(--spacing-lg);
}

/* Text/explanation column */
.answer-text {
    flex: 1;
    min-width: 0;
}

.answer-container.has-code .answer-text {
    flex: 0 0 35%;
    max-width: 35%;
}

/* Code column - full width when has code */
.answer-code {
    flex: 1;
    min-width: 0;
    display: none;
}

.answer-container.has-code .answer-code {
    display: block;
    flex: 0 0 63%;
    max-width: 63%;
}

/* Code block styling */
.answer-code pre {
    background-color: var(--bg-darkest);
    border: 1px solid var(--border-medium);
    border-radius: 8px;
    padding: var(--spacing-md);
    overflow-x: auto;
    margin: 0;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.5;
    max-height: 70vh;
    overflow-y: auto;
}

.answer-code code {
    color: var(--text-primary);
    background: transparent;
}

/* Code header with language and copy button */
.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-medium);
    border: 1px solid var(--border-medium);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    padding: var(--spacing-xs) var(--spacing-md);
}

.code-language {
    font-size: var(--font-size-small);
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
}

.code-copy-btn {
    background: none;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    cursor: pointer;
    font-size: var(--font-size-small);
    transition: all var(--transition-fast);
}

.code-copy-btn:hover {
    background-color: var(--bg-light);
    color: var(--text-primary);
}

.code-block-wrapper {
    margin-bottom: var(--spacing-md);
}

.code-block-wrapper pre {
    border-radius: 0 0 8px 8px;
}

/* Full-width message for code answers */
.message.assistant.has-code {
    max-width: 100%;
    width: 100%;
}

/* Responsive: Stack on smaller screens */
@media (max-width: 992px) {
    .answer-container.has-code {
        flex-direction: column;
    }

    .answer-container.has-code .answer-text,
    .answer-container.has-code .answer-code {
        flex: 1 1 100%;
        max-width: 100%;
    }
}

/* ========================================
   BATCH INDICATORS - COMPACT
   ======================================== */

.batch-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.batch-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.batch-item i {
    font-size: 1rem;
}

.batch-count {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.15);
    padding: 0.1rem 0.4rem;
    border-radius: 8px;
    min-width: 18px;
    text-align: center;
}

.batch-item.has-items {
    color: #4ade80;
}

.batch-item.has-items .batch-count {
    background-color: #166534;
    color: #4ade80;
}

/* Batch Toggle Buttons (Selectable) */
.batch-toggle {
    transition: all 0.2s ease;
    position: relative;
}

.batch-toggle.active {
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
    transform: scale(1.05);
}

.batch-toggle.active::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 5px solid #fff;
}

#images-batch-btn.active {
    background-color: #198754 !important;
    color: #fff !important;
    border-color: #198754 !important;
}

#text-batch-btn.active {
    background-color: #0dcaf0 !important;
    color: #000 !important;
    border-color: #0dcaf0 !important;
}

#audio-batch-btn.active {
    background-color: #ffc107 !important;
    color: #000 !important;
    border-color: #ffc107 !important;
}

/* Batch Process Buttons */
.batch-group {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.batch-process-btn {
    padding: 0.15rem 0.35rem;
    font-size: 0.7rem;
    border-radius: 0.25rem;
    opacity: 0.7;
    transition: all 0.2s ease;
}

.batch-process-btn:hover {
    opacity: 1;
    transform: scale(1.1);
}

.batch-process-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Connection Badge */
.connection-badge .badge {
    font-size: 0.75rem;
    padding: 0.35rem 0.6rem;
    display: flex;
    align-items: center;
}

.connection-badge .badge.bg-success {
    background-color: #166534 !important;
}

.connection-badge .badge.bg-danger {
    background-color: #991b1b !important;
}

/* Dark theme form controls */
.form-control.bg-dark:focus,
.form-select.bg-dark:focus {
    background-color: var(--bg-medium);
    border-color: var(--accent-primary);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(102, 102, 102, 0.25);
}

.form-control.bg-dark::placeholder {
    color: var(--text-muted);
}

/* Input Section */
.input-section .input-group {
    max-width: 100%;
}

.input-section .form-control {
    min-width: 0;
}

/* Mobile Responsive */
@media (max-width: 576px) {
    .navbar .d-flex.flex-wrap {
        justify-content: center !important;
    }
    
    .navbar-brand span {
        display: none !important;
    }
    
    .batch-item {
        padding: 0.2rem 0.3rem;
    }
    
    .batch-item i {
        font-size: 0.875rem;
    }
    
    .batch-count {
        font-size: 0.65rem;
        padding: 0.05rem 0.3rem;
    }
}

/* ========================================
   TRANSCRIPTION MARQUEE
   ======================================== */

.transcription-marquee {
    overflow: hidden;
    white-space: nowrap;
}

.marquee-container {
    overflow: hidden;
    position: relative;
}

.marquee-text {
    display: inline-block;
    animation: marquee 20s linear infinite;
    font-size: 0.85rem;
    padding-left: 100%;
}

.marquee-text.paused {
    animation-play-state: paused;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-100%);
    }
}

.transcription-marquee:hover .marquee-text {
    animation-play-state: paused;
}

/* Process button */
#process-btn {
    font-weight: 600;
}

#process-btn:hover {
    transform: scale(1.05);
}

/* Batch Count Badge Styles */
.batch-count {
    display: inline-block;
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 4px;
    border: 2px solid #28a745;
    background: transparent;
    min-width: 20px;
    text-align: center;
}

/* Disabled state when count is 0 */
.batch-count.disabled {
    color: #6c757d;
    border-color: #495057;
    opacity: 0.5;
}

/* Batch toggle button styles */
.batch-toggle {
    transition: all 0.2s ease;
}

.batch-toggle:hover {
    background: #2d2d2d !important;
}

.batch-toggle.active {
    background: #2d2d2d !important;
    box-shadow: inset 0 0 0 2px #28a745;
}

.batch-toggle.disabled-batch {
    opacity: 0.5;
    pointer-events: none;
}