/* ============================================
   DESIGN SYSTEM - CSS Variables
   ============================================ */
:root {
    /* Primary Colors */
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-primary-light: #eff6ff;
    --color-primary-dark: #1e40af;

    /* Secondary Colors */
    --color-secondary: #64748b;
    --color-secondary-hover: #475569;
    --color-secondary-light: #f1f5f9;

    /* Semantic Colors */
    --color-success: #10b981;
    --color-success-light: #d1fae5;
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-danger: #ef4444;
    --color-danger-light: #fee2e2;
    --color-info: #06b6d4;
    --color-info-light: #cffafe;

    /* Neutral Colors */
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;

    /* Text Colors */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --text-inverse: #ffffff;

    /* Borders */
    --border-color: #e5e7eb;
    --border-color-dark: #d1d5db;
    --border-radius: 0.5rem;
    --border-radius-sm: 0.375rem;
    --border-radius-lg: 0.75rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* 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-base: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.btn-primary {
    background-color: var(--color-primary);
    color: var(--text-inverse);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-base);
}

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

.btn-secondary {
    background-color: var(--color-secondary);
    color: var(--text-inverse);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-base);
}

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

.btn-danger {
    background-color: var(--color-danger);
    color: var(--text-inverse);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-base);
}
.btn-danger:hover { background-color: #dc2626; }

.btn-warning {
    background-color: var(--color-warning);
    color: var(--text-inverse);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-base);
}
.btn-warning:hover { background-color: #d97706; }

.btn-ghost {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color-dark);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-base);
}
.btn-ghost:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.badge {
    display: inline-flex;
    align-items: center;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    padding: 0.125rem 0.625rem;
}
.badge-success { background: var(--color-success-light); color: #065f46; }
.badge-info    { background: var(--color-info-light); color: #164e63; }
.badge-neutral { background: var(--color-gray-100); color: var(--color-gray-600); }
.badge-warning { background: var(--color-warning-light); color: #92400e; }
.badge-danger  { background: var(--color-danger-light); color: #991b1b; }

.admin-table { width: 100%; border-collapse: collapse; }
.admin-table thead th {
    padding: 0.75rem 1.5rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}
.admin-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-fast);
}
.admin-table tbody tr:hover { background: var(--color-primary-light); }
.admin-table td { padding: 1rem 1.5rem; font-size: 0.875rem; }

.card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

/* ============================================
   COMPONENT STYLES
   ============================================ */
.drop-zone {
    transition: all var(--transition-slow);
    border: 2px dashed var(--border-color-dark);
}
.drop-zone.drag-over {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
    transform: scale(1.02);
}
.file-item {
    transition: all var(--transition-base);
}
.file-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}
.chat-message {
    animation: slideIn var(--transition-slow) ease;
}
@keyframes slideIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.typing-indicator {
    animation: pulse 2s infinite;
}
.progress-bar {
    transition: width var(--transition-slow);
}
/* Стили для блоков кода в сообщениях */
.message-content pre {
    background-color: var(--color-gray-900) !important;
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-md);
    overflow-x: auto;
    margin: var(--spacing-md) 0;
    box-shadow: var(--shadow-md);
}
.message-content code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.875em;
}
.message-content pre code {
    background: transparent !important;
    padding: 0;
    border-radius: 0;
    color: #d4d4d4;
    display: block;
    line-height: 1.5;
}
.message-content p code {
    background-color: var(--color-gray-100);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    color: var(--color-danger);
    font-weight: 500;
}
.message-content :not(pre) > code {
    background-color: var(--color-gray-100);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    color: var(--color-danger);
}
.message-content p {
    margin: var(--spacing-xs) 0;
}
.message-content ul, .message-content ol {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}
.message-content blockquote {
    border-left: 3px solid var(--border-color-dark);
    padding-left: var(--spacing-md);
    margin: var(--spacing-sm) 0;
    color: var(--text-secondary);
}
/* Кнопка копирования кода */
.code-block-wrapper {
    position: relative;
}
.copy-code-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-inverse);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 0.75rem;
    opacity: 0;
    transition: opacity var(--transition-base);
}
.code-block-wrapper:hover .copy-code-btn {
    opacity: 1;
}
.copy-code-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Always show copy button on touch devices */
@media (hover: none) {
    .copy-code-btn {
        opacity: 1;
    }
}

/* Admin Sidebar Navigation */
.admin-menu-item {
    display: flex;
    align-items: center;
    padding: 0.4rem var(--spacing-lg);
    padding-left: calc(var(--spacing-lg) - 3px);
    border-left: 3px solid transparent;
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    transition: all var(--transition-base);
    cursor: pointer;
    text-decoration: none;
    font-size: 0.8125rem;
    font-weight: 500;
}

.admin-menu-item:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.admin-menu-item.active {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 600;
    border-left-color: var(--color-primary);
}

.admin-menu-item i {
    width: 16px;
    text-align: center;
    font-size: 0.8125rem;
}

.admin-section {
    display: none;
}

.admin-section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

#adminSidebar {
    border-right: 1px solid #e5e7eb;
}


/* Import Wizard Stepper */
.import-stepper {
    display: flex;
    align-items: center;
    gap: 0;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}
.import-stepper .step {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    white-space: nowrap;
}
.import-stepper .step-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-gray-200);
    color: var(--color-gray-500);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}
.import-stepper .step.active .step-num {
    background: var(--color-primary);
    color: white;
}
.import-stepper .step.active {
    color: var(--text-primary);
    font-weight: 500;
}
.import-stepper .step.done .step-num {
    background: var(--color-success);
    color: white;
}
.import-stepper .step-connector {
    flex: 1;
    height: 2px;
    background: var(--color-gray-200);
    min-width: 16px;
}
.import-stepper .step.done ~ .step-connector,
.import-stepper .step.active ~ .step-connector {
    background: var(--color-primary);
}

/* Toggle switch (Tailwind 2.x compatible — no peer-* needed) */
.rag-toggle { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
.rag-toggle input { opacity: 0; width: 0; height: 0; position: absolute; }
.rag-toggle-track {
    position: absolute; inset: 0;
    background: #d1d5db; border-radius: 9999px;
    transition: background 0.2s;
    cursor: pointer;
}
.rag-toggle-track::after {
    content: '';
    position: absolute; top: 2px; left: 2px;
    width: 20px; height: 20px;
    background: #fff; border-radius: 9999px;
    transition: transform 0.2s;
}
.rag-toggle input:checked + .rag-toggle-track { background: #6366f1; }
.rag-toggle input:checked + .rag-toggle-track { background: var(--toggle-color, #6366f1); }
.rag-toggle input:checked + .rag-toggle-track::after { transform: translateX(20px); }

/* Prompt override tabs */
.prompt-tab { color: #6b7280; background: transparent; border-bottom: 2px solid transparent; transition: color .15s, border-color .15s; }
.prompt-tab:hover { color: #374151; }
.prompt-tab-active { color: #4f46e5; border-bottom-color: #4f46e5; font-weight: 600; }

/* ============================================
   DRAWFLOW PIPELINE CANVAS
   ============================================ */

/* Override Drawflow defaults to match our design */
#pipeline-canvas .drawflow {
    background-color: #f9fafb;
    background-image: radial-gradient(circle, #d1d5db 1px, transparent 1px);
    background-size: 24px 24px;
}
#pipeline-canvas .drawflow .drawflow-node {
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    padding: 0;
    min-width: 190px;
    max-width: 220px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    transition: border-color 0.15s, box-shadow 0.15s;
}
#pipeline-canvas .drawflow .drawflow-node:hover {
    border-color: #a5b4fc;
    box-shadow: 0 2px 8px rgba(99,102,241,0.12);
}
#pipeline-canvas .drawflow .drawflow-node.selected,
#pipeline-canvas .drawflow .drawflow-node.df-selected {
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99,102,241,0.2);
}
/* Node inner layout */
.df-node-inner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    cursor: pointer;
    position: relative;
}
.df-node-icon {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 13px;
}
.df-node-text {
    flex: 1;
    min-width: 0;
}
.df-node-label {
    font-size: 13px;
    font-weight: 600;
    color: #1f2937;
    overflow-wrap: break-word;
    word-break: break-word;
    line-height: 1.3;
}
.df-node-type {
    font-size: 11px;
    color: #9ca3af;
    margin-top: 1px;
}
.df-delete-btn {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #d1d5db;
    border-radius: 6px;
    flex-shrink: 0;
    transition: color 0.15s, background 0.15s;
    font-size: 11px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
}
.df-delete-btn:hover {
    color: #ef4444;
    background: #fee2e2;
}
/* Connection ports */
#pipeline-canvas .drawflow .drawflow-node .input,
#pipeline-canvas .drawflow .drawflow-node .output {
    background: #6366f1;
    border: 2px solid white;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    box-shadow: 0 0 0 1px #6366f1;
}
#pipeline-canvas .drawflow .drawflow-node .input { left: -7px; }
#pipeline-canvas .drawflow .drawflow-node .output { right: -7px; }
/* Connection lines */
#pipeline-canvas .drawflow .connection .main-path {
    stroke: #6366f1;
    stroke-width: 2;
    opacity: 0.7;
}
#pipeline-canvas .drawflow .connection .main-path:hover {
    stroke-width: 3;
    opacity: 1;
}

/* ============================================
   APP SHELL LAYOUT
   ============================================ */
html, body {
    height: 100%;
    overflow: hidden;
}

#appHeader {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 56px;
    z-index: 30;
}

#adminSidebar {
    position: fixed;
    top: 56px; left: 0; bottom: 0;
    width: 220px;
    z-index: 20;
    overflow-y: auto;
    border-right: 1px solid #f0f0f0;
}

#adminContent {
    position: fixed;
    top: 56px;
    left: 220px;
    right: 0;
    bottom: 0;
    overflow-y: auto;
    padding: 1.5rem;
}

/* Mobile: sidebar slides over content */
@media (max-width: 768px) {
    #adminSidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-slow);
        box-shadow: var(--shadow-xl);
    }
    #adminSidebar.sidebar-open {
        transform: translateX(0);
    }
    #adminContent {
        left: 0;
    }
    #sidebarToggle { display: flex; }
}
@media (min-width: 769px) {
    #sidebarToggle { display: none; }
}

/* Toast positioning */
@media (max-width: 640px) {
    #toastContainer { top: auto; bottom: 1rem; right: 0.5rem; left: 0.5rem; }
}

/* API Docs: HTTP method badges */
.method-badge {
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.04em;
    border-radius: 4px; padding: 0.125rem 0.5rem; min-width: 54px;
    font-family: 'Consolas', 'Monaco', monospace; flex-shrink: 0;
}
.method-GET    { background: #d1fae5; color: #065f46; }
.method-POST   { background: #dbeafe; color: #1e40af; }
.method-PUT    { background: #fef3c7; color: #92400e; }
.method-DELETE { background: #fee2e2; color: #991b1b; }

/* API Docs: endpoint rows */
.api-endpoint-row {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.5rem 1rem; border-radius: 0.375rem;
    transition: background var(--transition-fast);
}
.api-endpoint-row:hover { background: var(--bg-tertiary); }

/* API Docs: details summary arrow rotation */
details[open] > summary .api-chevron { transform: rotate(180deg); }
details > summary .api-chevron { transition: transform 0.2s ease; }