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

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --border-color: #30363d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent-primary: #58a6ff;
    --accent-hover: #1f6feb;
    --success: #3fb950;
    --warning: #d29922;
    --danger: #f85149;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    z-index: 100;
    padding: 1rem;
    box-shadow: var(--shadow);
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

#header h1 {
    font-size: 1.5rem;
    color: var(--accent-primary);
    white-space: nowrap;
}

.header-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex: 1;
    max-width: 500px;
}

#search {
    flex: 1;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

#search:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.mobile-menu-btn {
    display: none;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.2rem;
}

.mobile-menu-btn:hover {
    background: var(--border-color);
}

/* Main Container */
.main-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    margin-top: 70px;
    min-height: calc(100vh - 70px);
}

/* Sidebar Categories */
.sidebar-categories {
    background: var(--bg-secondary);
    padding: 1rem;
    overflow-y: auto;
    border-right: 1px solid var(--border-color);
    height: calc(100vh - 70px);
    position: sticky;
    top: 70px;
}

.sidebar-categories h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--accent-primary);
}

.category-item {
    margin-bottom: 0.5rem;
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
}

.category-header:hover {
    background: var(--border-color);
}

.category-header.active {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.category-count {
    font-size: 0.85rem;
    background: var(--bg-primary);
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
}

/* Templates Gallery */
.templates-gallery {
    padding: 2rem;
    overflow-y: auto;
}

.gallery-header {
    margin-bottom: 2rem;
}

.gallery-header h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

#template-count {
    color: var(--text-secondary);
}

.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.template-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.3s;
}

.template-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--accent-primary);
}

.template-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--accent-primary);
}

.template-card .category-badge {
    display: inline-block;
    background: var(--bg-tertiary);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.template-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.template-card .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.template-card .tag {
    background: var(--border-color);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--text-primary);
}

/* Canvas Container */
.canvas-container {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 0;
    z-index: 90;
}

.canvas-container.hidden {
    display: none;
}

/* Canvas */
.canvas {
    background: var(--bg-primary);
    padding: 2rem;
    overflow-y: auto;
    border-right: 1px solid var(--border-color);
}

.canvas-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.canvas-header h2 {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.close-btn {
    background: var(--danger);
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    transition: opacity 0.2s;
}

.close-btn:hover {
    opacity: 0.8;
}

.workflow-info {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.workflow-info h3 {
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.jobs-container {
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    min-height: 200px;
    margin-bottom: 1.5rem;
}

.placeholder-text {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

.job-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.job-item h4 {
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.step-item {
    background: var(--bg-primary);
    border-left: 3px solid var(--accent-primary);
    padding: 0.5rem 1rem;
    margin: 0.5rem 0;
    border-radius: 4px;
}

.preview-section {
    margin-top: 2rem;
}

.preview-section h3 {
    margin-bottom: 0.5rem;
    color: var(--accent-primary);
}

.yaml-preview {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-primary);
    max-height: 400px;
    overflow-y: auto;
}

/* Actions Sidebar */
.sidebar-actions {
    background: var(--bg-secondary);
    padding: 1.5rem;
    overflow-y: auto;
    border-left: 1px solid var(--border-color);
}

.sidebar-actions h3 {
    margin-bottom: 1rem;
    color: var(--accent-primary);
}

#action-search {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    border-radius: 6px;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

#action-search:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.actions-list {
    margin-bottom: 2rem;
}

.action-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
}

.action-item:hover {
    background: var(--border-color);
}

.action-item h4 {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
    color: var(--accent-primary);
}

.action-item p {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.export-section {
    position: sticky;
    bottom: 0;
    background: var(--bg-secondary);
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.export-section h4 {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.export-btns {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.btn {
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.2s;
}

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

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

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

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

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

.btn-success:hover {
    opacity: 0.9;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    z-index: 1000;
    animation: slideIn 0.3s ease-out;
}

.toast.hidden {
    display: none;
}

.toast.success {
    border-color: var(--success);
    background: rgba(63, 185, 80, 0.1);
}

.toast.error {
    border-color: var(--danger);
    background: rgba(248, 81, 73, 0.1);
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .canvas-container {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 400px;
    }

    .sidebar-actions {
        border-left: none;
        border-top: 1px solid var(--border-color);
    }
}

@media (max-width: 768px) {
    .main-container {
        grid-template-columns: 1fr;
    }

    .sidebar-categories {
        position: fixed;
        left: -250px;
        top: 70px;
        width: 250px;
        z-index: 95;
        transition: left 0.3s;
        box-shadow: var(--shadow);
    }

    .sidebar-categories.active {
        left: 0;
    }

    .mobile-menu-btn {
        display: block;
    }

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

    #header h1 {
        font-size: 1.2rem;
    }

    .header-content {
        width: 100%;
    }

    .header-controls {
        max-width: 100%;
    }

    .canvas-container {
        grid-template-rows: 1fr 50vh;
    }

    .canvas {
        padding: 1rem;
    }

    .sidebar-actions {
        padding: 1rem;
    }

    .toast {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.loading {
    opacity: 0.5;
    pointer-events: none;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

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