/**
 * CrewXR Admin Interface Styles
 * CWRU-branded, responsive design following IC UI Design principles
 */

/* ============================================================================
   CSS Variables - CWRU Brand Colors
   ============================================================================ */
:root {
    /* Primary Colors */
    --cwru-blue: #003071;
    --cwru-blue-light: #0a4a94;
    --cwru-blue-dark: #001f4a;

    /* Secondary Colors */
    --cwru-gray: #6c757d;
    --cwru-gray-light: #e9ecef;
    --cwru-gray-dark: #343a40;

    /* Accent Colors */
    --success-green: #28a745;
    --warning-yellow: #ffc107;
    --error-red: #dc3545;
    --info-blue: #17a2b8;

    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;

    /* Text */
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;

    /* Borders */
    --border-color: #dee2e6;
    --border-radius: 16px;
    --border-radius-sm: 8px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);

    /* Spacing (8pt grid) */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;

    /* Touch targets */
    --touch-target: 48px;
}

/* ============================================================================
   Base Styles
   ============================================================================ */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

/* ============================================================================
   Layout
   ============================================================================ */
.admin-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.admin-header {
    background-color: var(--cwru-blue);
    color: white;
    padding: var(--spacing-lg) var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--border-radius);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.admin-header .header-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* ============================================================================
   Navigation
   ============================================================================ */
.admin-nav {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    min-height: var(--touch-target);
    background-color: var(--bg-card);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-link:hover {
    background-color: var(--cwru-blue-light);
    color: white;
    border-color: var(--cwru-blue-light);
}

.nav-link.active {
    background-color: var(--cwru-blue);
    color: white;
    border-color: var(--cwru-blue);
}

/* ============================================================================
   Cards
   ============================================================================ */
.card {
    background-color: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

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

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--cwru-blue);
}

/* ============================================================================
   Buttons
   ============================================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    min-height: var(--touch-target);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--cwru-blue);
    color: white;
}

.btn-primary:hover {
    background-color: var(--cwru-blue-light);
}

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--cwru-gray-light);
}

.btn-success {
    background-color: var(--success-green);
    color: white;
}

.btn-danger {
    background-color: var(--error-red);
    color: white;
}

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

.btn-sm {
    min-height: 36px;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-icon {
    min-width: var(--touch-target);
    padding: var(--spacing-sm);
}

/* ============================================================================
   Forms
   ============================================================================ */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    min-height: var(--touch-target);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background-color: var(--bg-card);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--cwru-blue);
    box-shadow: 0 0 0 3px rgba(0, 48, 113, 0.15);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-textarea.code {
    font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    min-height: 300px;
}

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

/* Checkboxes */
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-height: var(--touch-target);
    padding: var(--spacing-sm);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--cwru-blue);
}

/* ============================================================================
   Tables
   ============================================================================ */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    font-weight: 600;
    color: var(--cwru-blue);
    background-color: var(--bg-secondary);
}

.table tr:hover {
    background-color: var(--bg-secondary);
}

/* ============================================================================
   Status Badges
   ============================================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    text-transform: uppercase;
}

.badge-active {
    background-color: rgba(40, 167, 69, 0.15);
    color: var(--success-green);
}

.badge-inactive {
    background-color: rgba(108, 117, 125, 0.15);
    color: var(--cwru-gray);
}

.badge-warning {
    background-color: rgba(255, 193, 7, 0.15);
    color: #856404;
}

.badge-error {
    background-color: rgba(220, 53, 69, 0.15);
    color: var(--error-red);
}

.badge-system {
    background-color: rgba(0, 48, 113, 0.15);
    color: var(--cwru-blue);
    margin-left: 8px;
    font-size: 0.65rem;
}

/* ============================================================================
   Teacher List
   ============================================================================ */
.teacher-list {
    display: grid;
    gap: var(--spacing-md);
}

.teacher-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    transition: box-shadow 0.2s ease;
}

.teacher-item:hover {
    box-shadow: var(--shadow-md);
}

.teacher-info {
    flex: 1;
}

.teacher-name {
    font-weight: 600;
    color: var(--cwru-blue);
    margin-bottom: var(--spacing-xs);
}

.teacher-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.teacher-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.teacher-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ============================================================================
   Tool Builder
   ============================================================================ */
.tool-builder {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

@media (max-width: 1024px) {
    .tool-builder {
        grid-template-columns: 1fr;
    }
}

.mode-toggle {
    display: flex;
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}

.mode-btn {
    flex: 1;
    padding: var(--spacing-md);
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.mode-btn.active {
    background-color: var(--cwru-blue);
    color: white;
}

.code-preview {
    background-color: #1e1e1e;
    color: #d4d4d4;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    overflow-x: auto;
    white-space: pre-wrap;
    min-height: 300px;
}

/* ============================================================================
   Validation Results
   ============================================================================ */
.validation-results {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
}

.validation-success {
    background-color: rgba(40, 167, 69, 0.1);
    border: 1px solid var(--success-green);
}

.validation-error {
    background-color: rgba(220, 53, 69, 0.1);
    border: 1px solid var(--error-red);
}

.validation-warning {
    background-color: rgba(255, 193, 7, 0.1);
    border: 1px solid var(--warning-yellow);
}

.validation-issue {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    background-color: var(--bg-card);
    border-radius: var(--border-radius-sm);
}

.issue-severity {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
}

.issue-severity.critical {
    color: var(--error-red);
}

.issue-severity.warning {
    color: var(--warning-yellow);
}

/* ============================================================================
   Version History
   ============================================================================ */
.version-list {
    display: grid;
    gap: var(--spacing-sm);
}

.version-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid var(--cwru-blue);
}

.version-date {
    font-weight: 500;
}

.version-message {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.version-hash {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================================================
   Dashboard Stats
   ============================================================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background-color: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    border-left: 4px solid var(--cwru-blue);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--cwru-blue);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============================================================================
   Loading & Empty States
   ============================================================================ */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xxl);
    color: var(--text-muted);
}

.loading::after {
    content: '';
    width: 24px;
    height: 24px;
    border: 3px solid var(--cwru-blue);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: var(--spacing-md);
}

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

.empty-state {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* ============================================================================
   Modals
   ============================================================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background-color: var(--bg-card);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(-20px);
    transition: transform 0.2s ease;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

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

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--cwru-blue);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    padding: var(--spacing-sm);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* ============================================================================
   Responsive
   ============================================================================ */
@media (max-width: 768px) {
    .admin-container {
        padding: var(--spacing-md);
    }

    .admin-header {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .teacher-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .teacher-actions {
        margin-top: var(--spacing-md);
        width: 100%;
        justify-content: flex-end;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* ============================================================================
   Utility Classes
   ============================================================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success-green); }
.text-error { color: var(--error-red); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.flex { display: flex; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }

.hidden { display: none !important; }

/* ============================================================================
   Teacher Studio Styles
   ============================================================================ */

/* Collapsible Sections */
.studio-section {
    background-color: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--cwru-blue);
    color: white;
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s ease;
}

.section-header:hover {
    background-color: var(--cwru-blue-light);
}

.section-title {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section-count {
    background-color: rgba(255, 255, 255, 0.2);
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
}

.section-toggle {
    transition: transform 0.2s ease;
}

.section-header.collapsed .section-toggle {
    transform: rotate(-90deg);
}

.section-content {
    padding: var(--spacing-lg);
}

.section-header.collapsed + .section-content {
    display: none;
}

/* Data Source Items */
.data-source-list {
    display: grid;
    gap: var(--spacing-md);
}

.data-source-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid var(--cwru-blue);
    transition: box-shadow 0.2s ease;
}

.data-source-item:hover {
    box-shadow: var(--shadow-sm);
}

.data-source-icon {
    font-size: 1.5rem;
    width: 40px;
    text-align: center;
}

.data-source-info {
    flex: 1;
}

.data-source-name {
    font-weight: 600;
    color: var(--text-primary);
}

.data-source-type {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.data-source-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Tool Cards */
.tool-list {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.tool-card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    transition: box-shadow 0.2s ease;
}

.tool-card:hover {
    box-shadow: var(--shadow-sm);
}

.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
}

.tool-name {
    font-weight: 600;
    font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
    color: var(--cwru-blue);
}

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

.tool-description {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.tool-progress {
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.progress-bar {
    height: 4px;
    background-color: var(--cwru-gray-light);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: var(--cwru-blue);
    transition: width 0.3s ease;
}

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

.tool-code {
    display: none;
    padding: var(--spacing-md);
    background-color: #1e1e1e;
    max-height: 300px;
    overflow: auto;
}

.tool-code.visible {
    display: block;
}

.tool-code pre {
    margin: 0;
    color: #d4d4d4;
    font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    white-space: pre-wrap;
}

/* Tool Status Badges */
.badge-draft {
    background-color: rgba(255, 193, 7, 0.15);
    color: #856404;
}

.badge-generating {
    background-color: rgba(0, 48, 113, 0.15);
    color: var(--cwru-blue);
    animation: pulse 1.5s infinite;
}

.badge-validating {
    background-color: rgba(255, 193, 7, 0.15);
    color: #856404;
}

.badge-retrying {
    background-color: rgba(255, 193, 7, 0.15);
    color: #856404;
    animation: pulse 1.5s infinite;
}

.badge-ready {
    background-color: rgba(40, 167, 69, 0.15);
    color: var(--success-green);
}

.badge-failed {
    background-color: rgba(220, 53, 69, 0.15);
    color: var(--error-red);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* Chat Interface */
.chat-container {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    display: flex;
    flex-direction: column;
    height: 400px;
    background-color: var(--bg-card);
}

.chat-header {
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--cwru-blue);
}

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

.chat-message {
    max-width: 85%;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    line-height: 1.5;
}

.chat-message.user {
    align-self: flex-end;
    background-color: var(--cwru-blue);
    color: white;
}

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

.chat-message .message-content {
    white-space: pre-wrap;
    word-break: break-word;
}

.chat-input-container {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.chat-input {
    flex: 1;
    min-height: var(--touch-target);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    resize: none;
    font-family: inherit;
}

.chat-input:focus {
    outline: none;
    border-color: var(--cwru-blue);
    box-shadow: 0 0 0 3px rgba(0, 48, 113, 0.15);
}

/* Generation Controls */
.generation-controls {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

/* Save Status Indicator */
.save-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-muted);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    background-color: var(--bg-secondary);
}

.save-status.saving {
    color: var(--cwru-blue);
}

.save-status.saving::before {
    content: '';
    width: 12px;
    height: 12px;
    border: 2px solid var(--cwru-blue);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.save-status.saved {
    color: var(--success-green);
}

.save-status.saved::before {
    content: '✓';
    font-weight: bold;
}

.save-status.error {
    color: var(--error-red);
}

.save-status.error::before {
    content: '✗';
    font-weight: bold;
}

/* Deploy Button States */
.btn-deploy {
    min-width: 200px;
}

.btn-deploy.disabled {
    background-color: var(--cwru-gray);
    cursor: not-allowed;
    opacity: 0.7;
}

.btn-deploy.ready {
    background-color: var(--success-green);
}

.btn-deploy.ready:hover {
    background-color: #218838;
}

.btn-deploy.blocked {
    background-color: var(--error-red);
    cursor: not-allowed;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 1001;
    pointer-events: none;
}

.toast {
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--cwru-blue);
    color: white;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    animation: toastSlideIn 0.3s ease;
    pointer-events: auto;
}

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

.toast.warning {
    background-color: #e0a800;
    color: #212529;
}

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

.toast {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.toast-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0 0 0 var(--spacing-md);
    opacity: 0.7;
    line-height: 1;
}

.toast-close:hover {
    opacity: 1;
}

@keyframes toastSlideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Add Data Source Form */
.add-source-form {
    display: none;
    padding: var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    margin-top: var(--spacing-md);
    border: 1px solid var(--border-color);
}

.add-source-form.visible {
    display: block;
}

/* Responsive Adjustments for Studio */
@media (max-width: 768px) {
    .chat-container {
        height: 350px;
    }

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

    .tool-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .tool-status {
        width: 100%;
        justify-content: flex-end;
    }

    .generation-controls {
        flex-direction: column;
    }

    .btn-deploy {
        width: 100%;
    }
}

/* ============================================================================
   Generation Status Bar
   ============================================================================ */

.generation-status {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--cwru-blue) 0%, var(--cwru-blue-dark) 100%);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    transform: translateY(100%);
    transition: transform 0.3s ease;
    z-index: 1002;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
}

.generation-status.visible {
    transform: translateY(0);
}

.generation-status-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.generation-status .status-message {
    font-size: 1rem;
    font-weight: 500;
}

/* Spinner Animation */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.btn .spinner {
    width: 16px;
    height: 16px;
    border-width: 2px;
    margin-right: var(--spacing-sm);
    vertical-align: middle;
}

.btn.loading {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

/* ============================================================================
   Tool Generation Status Panel
   ============================================================================ */

.tool-generation-status {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--cwru-blue) 0%, var(--cwru-blue-dark) 100%);
    color: white;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    z-index: 1002;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
    max-height: 50vh;
    overflow-y: auto;
}

.tool-generation-status.visible {
    transform: translateY(0);
}

.tool-generation-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-xl);
    background: rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: sticky;
    top: 0;
}

.tool-generation-header .spinner {
    flex-shrink: 0;
}

.tool-generation-header span {
    flex: 1;
    font-weight: 600;
    font-size: 1rem;
}

.tool-generation-header .btn {
    flex-shrink: 0;
}

.tool-generation-list {
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.gen-tool-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    transition: background 0.2s ease;
}

.gen-tool-item.active {
    background: rgba(255, 255, 255, 0.2);
}

.gen-tool-item.done {
    background: rgba(40, 167, 69, 0.3);
}

.gen-tool-item.failed {
    background: rgba(220, 53, 69, 0.3);
}

.gen-tool-item.retrying {
    background: rgba(255, 193, 7, 0.3);
}

.gen-tool-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.gen-tool-name {
    font-weight: 500;
    flex: 1;
}

.gen-tool-msg {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Small spinner for inline use */
.spinner-sm {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}