:root {
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --accent-color: #10b981;
    --danger-color: #ef4444;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.logo-container {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.logo {
    font-weight: 600;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.header-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-left: 1.8rem;
    /* Align with text after logo icon (24px + 8px gap approx) */
}

.actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.lang-switcher {
    display: flex;
    background: #f3f4f6;
    border-radius: 6px;
    padding: 2px;
    border: 1px solid var(--border-color);
    margin-right: 0.5rem;
}

.lang-btn {
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    background: none;
    color: var(--text-secondary);
    border-radius: 4px;
    transition: all 0.2s;
}

.lang-btn.active {
    background: white;
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s;
}

.btn.small {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

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

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

.btn.secondary {
    background-color: white;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn.secondary:hover {
    background-color: #f9fafb;
    border-color: #d1d5db;
}

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

.btn.accent:hover {
    filter: brightness(90%);
}

.btn.danger {
    background-color: white;
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.btn.danger:hover {
    background-color: #fef2f2;
}

#btnHelp {
    padding: 0.5rem;
    width: 2.25rem;
    height: 2.25rem;
    justify-content: center;
    border-radius: 50%;
}

.btn-icon {
    padding: 0.2rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
}

.btn-icon:hover {
    color: var(--danger-color);
}

/* Split Button & Dropdown */
.dropdown-container {
    position: relative;
    display: inline-block;
}

.split-button {
    display: inline-flex;
    align-items: stretch;
}

.split-button #btnSave {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.split-button .dropdown-toggle {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    box-shadow: var(--shadow-md);
    z-index: 1001;
    min-width: 180px;
    padding: 0.5rem 0;
    display: flex;
    flex-direction: column;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1rem;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    font-size: 0.875rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: background 0.2s;
}

.dropdown-item:hover {
    background-color: #f3f4f6;
}

.dropdown-item svg {
    color: var(--text-secondary);
}


/* Main Layout */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1rem 1.5rem;
    overflow: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

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

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

/* Matches Grid */
.matches-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.match-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    cursor: pointer;
    transition: box-shadow 0.2s;
    position: relative;
}

.match-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

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

.trigger-badge {
    background-color: #eff6ff;
    color: var(--primary-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: monospace;
    font-weight: 600;
}

.type-badge {
    text-transform: uppercase;
    font-size: 0.7rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
}

.match-content {
    background-color: #f9fafb;
    padding: 0.75rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
    color: #374151;
    overflow-x: hidden;
    max-height: 150px;
    overflow-y: hidden;
    text-overflow: ellipsis;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    background: var(--card-bg);
    border-radius: 0.5rem;
    border: 2px dashed var(--border-color);
}


/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    position: relative;
    background-color: var(--card-bg);
    border-radius: 0.5rem;
    width: 100%;
    max-width: 650px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.modal-header {
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.25rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.modal-footer {
    padding: 1.25rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    background-color: #f9fafb;
    border-bottom-left-radius: 0.5rem;
    border-bottom-right-radius: 0.5rem;
}

.spacer {
    flex: 1;
}

/* Type Overlay */
.type-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--card-bg);
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 0.5rem;
}

.type-selection-content {
    text-align: center;
    max-width: 500px;
    padding: 2rem;
}

.type-selection-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.type-selection-content p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.type-buttons-large {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.type-btn-large {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 2rem 1rem;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-primary);
}

.type-btn-large svg {
    color: var(--primary-color);
    transition: transform 0.2s;
}

.type-btn-large:hover {
    border-color: var(--primary-color);
    background: #eff6ff;
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.btn-feedback-active {
    background-color: #10b981 !important;
    border-color: #059669 !important;
    color: white !important;
}

.btn-feedback-active svg {
    color: white !important;
}

.type-btn-large:hover svg {
    transform: scale(1.1);
}

.type-btn-large span {
    font-weight: 600;
    font-size: 0.9rem;
}

/* Form Elements */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* Tooltips */
.tooltip-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: #e5e7eb;
    color: var(--text-secondary);
    font-size: 0.7rem;
    cursor: help;
    font-weight: bold;
    font-style: normal;
    position: relative;
}

.tooltip-icon:hover {
    background-color: var(--primary-color);
    color: white;
}

.tooltip-icon:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Global Tooltip (JS managed) */
.global-tooltip {
    position: fixed;
    background-color: #1f2937;
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: normal;
    max-width: 250px;
    z-index: 9999;
    pointer-events: none;
    line-height: 1.4;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    opacity: 0;
    transition: opacity 0.2s;
}

.global-tooltip.visible {
    opacity: 1;
}

.form-group input[type="text"],
.form-group textarea,
.form-group select {
    padding: 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-family: inherit;
    font-size: 0.95rem;
}

.form-group textarea {
    font-family: monospace;
    resize: vertical;
}

.form-group small {
    color: var(--text-secondary);
}

/* Type Selector */
.type-selector {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.type-option {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    font-size: 0.9rem;
}

.hidden {
    display: none !important;
}

.input-with-prefix {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    overflow: hidden;
}

.input-with-prefix .prefix {
    background-color: #f3f4f6;
    padding: 0.6rem 0.8rem;
    color: var(--text-secondary);
    border-right: 1px solid var(--border-color);
}

.input-with-prefix input {
    border: none !important;
    border-radius: 0 !important;
    flex: 1;
}

/* Visual Builder Styles */
.info-box {
    background-color: #eff6ff;
    padding: 0.75rem;
    border-radius: 4px;
    border-left: 3px solid var(--primary-color);
    font-size: 0.9rem;
    color: #1e40af;
}

.alert-box {
    background-color: #fffbeb;
    padding: 0.75rem;
    border-radius: 4px;
    border-left: 3px solid #f59e0b;
    font-size: 0.9rem;
    color: #92400e;
    margin-top: 1rem;
}

.fields-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.field-row {
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    background: #f9fafb;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

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

.field-header input {
    flex: 0 0 50%;
    font-family: monospace;
    font-weight: 600;
}

.field-body {
    display: flex;
    gap: 1rem;
}

.field-body .col {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

/* Form Preview */
.form-preview {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--border-color);
}

.form-preview label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: block;
}

.preview-ui {
    background: #f9fafb;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 400px;
    overflow-y: auto;
}

.preview-inline-container {
    line-height: 2.2;
    white-space: pre-wrap;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.inline-field-wrapper {
    display: inline-block;
    margin: 0 4px;
    vertical-align: middle;
}

.inline-input {
    border: 1px solid var(--primary-color);
    background: #eff6ff;
    padding: 0.3rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 500;
}

/* Specific tooltip or placeholder style for inputs */
.inline-input::placeholder {
    color: #93c5fd;
}

.inline-text {
    vertical-align: middle;
}

.inline-date-preview {
    display: inline-block;
    background: #d1fae5;
    color: #065f46;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 600;
    font-family: monospace;
    font-size: 0.9rem;
    border: 1px solid #6ee7b7;
    margin: 0 4px;
    vertical-align: middle;
}

.info-box.success {
    background-color: #ecfdf5;
    border-left-color: #10b981;
    color: #065f46;
}

/* Help Modal Specifics */
.help-tip {
    font-size: 0.85rem;
    color: var(--text-secondary);
    background-color: #f3f4f6;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    border-left: 3px solid #9ca3af;
    margin-top: 0.75rem;
    font-style: italic;
}

/* Help Modal Table */
.os-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.85rem;
    background: #f9fafb;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.os-table th,
.os-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.os-table th {
    background-color: #f3f4f6;
    font-weight: 600;
    color: var(--text-primary);
}

.os-table tr:last-child td {
    border-bottom: none;
}

.os-table code {
    background: #e5e7eb;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
    display: block;
    word-break: break-all;
}

.os-table .btn-copy-mini {
    padding: 0.2rem 0.5rem;
    font-size: 0.7rem;
    margin-top: 0.4rem;
}

.path-display {
    background: #1f2937;
    color: #e5e7eb;
    padding: 0.75rem;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: monospace;
    margin: 1rem 0;
}

/* Split View Layout */
.split-view {
    display: flex;
    gap: 1.5rem;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* Sidebar Pane */
.sidebar-pane {
    flex: 0 0 180px;
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.sidebar-toolbar {
    padding: 0.5rem 1rem;
    background: #f9fafb;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0 !important;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-toolbar h3 {
    margin: 0;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sidebar-list {
    overflow-y: auto;
    flex: 1;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.sidebar-item {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    cursor: grab;
    font-size: 0.85rem;
    color: var(--text-primary);
    transition: all 0.2s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    border-left: 3px solid transparent;
}

.sidebar-item:active {
    cursor: grabbing;
}

.sidebar-item:hover {
    background-color: #f9fafb;
    color: var(--primary-color);
}

.sidebar-item.selected {
    background-color: #eff6ff;
    color: var(--primary-color);
    font-weight: 600;
    border-left-color: var(--primary-color);
}

.sidebar-item.dragging {
    opacity: 0.4;
    background-color: #f3f4f6;
}

.sidebar-item.drag-over {
    border-top: 2px solid var(--primary-color);
    background-color: #f0f7ff;
}

.visual-pane {
    flex: 1.5;
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    min-width: 0;
}

.visual-pane .toolbar {
    padding: 0.5rem 1rem;
    background: #f9fafb;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0;
    flex-shrink: 0;
}

/* Adjust matches grid to scroll within the pane */
.visual-pane .matches-grid {
    overflow-y: auto;
    flex: 1;
    padding: 1rem;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.match-card.selected {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
    background-color: #fdfdff;
}

/* YAML Preview Pane */
.yaml-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    min-width: 0;
}

.preview-toolbar {
    padding: 0.5rem 1rem;
    background: #f9fafb;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.preview-toolbar h3 {
    margin: 0;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.preview-toolbar .actions {
    display: flex;
    gap: 0.5rem;
}

#yamlEditor {
    flex: 1;
    width: 100%;
    border: none;
    resize: none;
    padding: 1rem;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    background-color: var(--card-bg);
    color: var(--text-primary);
    outline: none;
    white-space: pre;
    overflow: auto;
    tab-size: 2;
}

#yamlEditor::placeholder {
    color: var(--text-secondary);
    opacity: 0.5;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .split-view {
        flex-direction: column;
        height: auto;
    }

    .sidebar-pane {
        display: none;
        /* Hide sidebar on mobile or handle differently */
    }

    .visual-pane,
    .yaml-pane {
        height: 500px;
        margin-bottom: 2rem;
    }

    body {
        height: auto;
        overflow-y: auto;
    }

    main {
        overflow: visible;
    }
}

/* Footer */
.main-footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.footer-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.main-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.main-footer a:hover {
    text-decoration: underline;
}

.heart {
    color: var(--danger-color);
    font-size: 1rem;
    margin: 0 0.1rem;
}

@media (max-width: 600px) {
    .footer-content {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}