:root {
    --bg-dark: #07090e;
    --bg-panel: #0d111d;
    --bg-card: #131929;
    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(0, 220, 200, 0.25);
    
    --color-text: #e2e8f0;
    --color-text-muted: #64748b;
    --color-primary: #00dcc8; /* Teal / Cyan */
    --color-primary-dark: #00bfae;
    --color-accent: #ff6520; /* Orange */
    --color-danger: #ef4444;
    --color-success: #10b981;
    
    --font-sans: 'Outfit', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
    --transition: all 0.25s ease;
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    line-height: 1.5;
    overflow: hidden;
    height: 100vh;
}

/* App Layout */
.app-layout {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar */
.app-sidebar {
    width: 280px;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px;
    flex-shrink: 0;
}

.brand-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
}

.logo-icon {
    font-size: 2.2rem;
}

.brand-header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--color-text);
}

.sub-brand {
    font-size: 0.75rem;
    color: var(--color-primary);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.1em;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.nav-btn {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    text-align: left;
    padding: 12px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-btn:hover {
    color: var(--color-text);
    background-color: rgba(255, 255, 255, 0.03);
}

.nav-btn.active {
    color: var(--color-dark);
    background-color: var(--color-primary);
    font-weight: 600;
    box-shadow: 0 4px 20px -5px rgba(0, 220, 200, 0.4);
}

.sidebar-footer {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.auth-box {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.auth-box label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.auth-box input {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px;
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    outline: none;
    transition: var(--transition);
}

.auth-box input:focus {
    border-color: var(--color-primary);
}

.auth-box button {
    background-color: rgba(0, 220, 200, 0.1);
    border: 1px solid rgba(0, 220, 200, 0.2);
    color: var(--color-primary);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.auth-box button:hover {
    background-color: var(--color-primary);
    color: var(--bg-dark);
}

.status-indicator {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.dot.online {
    background-color: var(--color-success);
    box-shadow: 0 0 10px var(--color-success);
}

/* Main Viewport */
.app-viewport {
    flex-grow: 1;
    height: 100vh;
    overflow-y: auto;
    padding: 40px;
    position: relative;
}

/* Content Panels */
.content-panel {
    display: none;
    animation: fadeIn 0.3s ease;
    max-width: 1000px;
    margin: 0 auto;
}

.content-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-header {
    margin-bottom: 32px;
}

.panel-header h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #fff;
}

.panel-header p {
    color: var(--color-text-muted);
}

/* Toast Notifications */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--bg-card);
    border-left: 4px solid var(--color-success);
    border-radius: 6px;
    padding: 16px 24px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    z-index: 10000;
    transition: var(--transition);
    font-weight: 500;
}

.toast.error {
    border-left-color: var(--color-danger);
}

.toast.hidden {
    opacity: 0;
    transform: translateY(-20px);
    pointer-events: none;
}

/* Buttons */
.btn {
    border: none;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    box-shadow: 0 4px 20px rgba(0, 220, 200, 0.3);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--color-text);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Drag & Drop Upload Zone */
.upload-area {
    background-color: var(--bg-card);
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 48px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 30px;
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--color-primary);
    background-color: rgba(0, 220, 200, 0.01);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.upload-area h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.browse-link {
    color: var(--color-primary);
    text-decoration: underline;
    font-weight: 600;
}

.upload-limit {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 12px;
}

/* Uploading progress card */
.active-uploads-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px 20px;
    margin-bottom: 30px;
    animation: fadeIn 0.3s ease;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background-color: var(--bg-dark);
    border-radius: 99px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0;
    background-color: var(--color-primary);
    transition: width 0.3s ease;
}

/* Documents Grid */
.document-section h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: #fff;
}

.documents-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.doc-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

.doc-card:hover {
    border-color: var(--border-hover);
    transform: translateX(4px);
}

.doc-icon {
    font-size: 1.5rem;
}

.doc-details {
    flex-grow: 1;
}

.doc-details h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
    color: #fff;
}

.doc-details span {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.delete-doc-btn {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: var(--transition);
}

.delete-doc-btn:hover {
    color: var(--color-danger);
    background-color: rgba(239, 68, 68, 0.05);
}

.empty-state {
    text-align: center;
    padding: 48px;
    color: var(--color-text-muted);
}

.empty-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 12px;
}

/* Settings Form */
.settings-form {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group.full-width {
    grid-column: span 2;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text);
}

.form-group input, .form-group select, .form-group textarea {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--color-text);
    font-family: var(--font-sans);
    outline: none;
    transition: var(--transition);
}

.form-group textarea {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    resize: vertical;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--color-primary);
}

.password-input-wrap {
    position: relative;
    display: flex;
}

.password-input-wrap input {
    width: 100%;
    padding-right: 48px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    color: var(--color-text-muted);
}

.field-hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.field-hint code {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    color: var(--color-primary);
}

.form-actions {
    margin-top: 32px;
    display: flex;
    justify-content: flex-end;
}

/* Integration Widget page */
.widget-integration-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 30px;
}

.widget-integration-card h3 {
    margin-bottom: 8px;
    color: #fff;
}

.widget-integration-card p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.code-box {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.code-box pre {
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-primary);
}

.widget-styling-guide {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
}

.widget-styling-guide h3 {
    margin-bottom: 8px;
    color: #fff;
}

.widget-styling-guide p {
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.features-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.feature-item {
    display: flex;
    gap: 16px;
}

.feature-bullet {
    font-size: 1.5rem;
}

.feature-item h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
}

.feature-item p {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* Chat Playground Layout */
.playground-layout {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 24px;
    height: calc(100vh - 200px);
}

.chat-console {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.console-log {
    flex-grow: 1;
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.msg {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.9rem;
    animation: fadeIn 0.2s ease;
}

.msg.assistant {
    background-color: var(--bg-dark);
    align-self: flex-start;
    border-bottom-left-radius: 2px;
    border: 1px solid var(--border-color);
}

.msg.user {
    background-color: var(--color-primary);
    color: var(--bg-dark);
    font-weight: 500;
    align-self: flex-end;
    border-bottom-right-radius: 2px;
}

.msg.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
    align-self: center;
    border-radius: 8px;
    font-size: 0.8rem;
}

.msg.typing p {
    color: var(--color-text-muted);
    font-style: italic;
}

.console-input-area {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
}

.console-input-area input {
    flex-grow: 1;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--color-text);
    font-family: var(--font-sans);
    outline: none;
    transition: var(--transition);
}

.console-input-area input:focus {
    border-color: var(--color-primary);
}

.context-inspector {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.context-inspector h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
}

.section-desc {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.context-data-box {
    flex-grow: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.no-context {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    font-style: italic;
    text-align: center;
    margin-top: 40px;
}

.retrieved-chunk {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    font-size: 0.8rem;
    line-height: 1.4;
}

.retrieved-chunk strong {
    display: block;
    color: var(--color-primary);
    font-size: 0.75rem;
    margin-bottom: 4px;
}