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

:root {
    /* Light Theme */
    --primary-color: #4361ee;
    --primary-dark: #3a56d4;
    --secondary-color: #7209b7;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --info-color: #3498db;
    
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --sidebar-bg: #ffffff;
    --header-bg: #ffffff;
    --text-color: #333333;
    --text-muted: #666666;
    --border-color: #e0e0e0;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --border-radius: 8px;
    --transition: all 0.2s ease;
}

.dark-theme {
    /* Dark Theme */
    --primary-color: #5a7dff;
    --primary-dark: #4a6df0;
    --secondary-color: #9d4edd;
    --success-color: #27ae60;
    --warning-color: #f1c40f;
    --danger-color: #c0392b;
    --info-color: #2980b9;
    
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --sidebar-bg: #252525;
    --header-bg: #1a1a1a;
    --text-color: #f0f0f0;
    --text-muted: #aaaaaa;
    --border-color: #444444;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: var(--transition);
    overflow: hidden;
    height: 100vh;
}

/* App Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
    height: 64px;
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.app-title {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
}

.form-title-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

#formTitle {
    font-size: 1.1rem;
    font-weight: 600;
    background: transparent;
    border: none;
    color: var(--text-color);
    padding: 4px 8px;
    border-radius: 4px;
    min-width: 200px;
    transition: var(--transition);
}

#formTitle:focus {
    outline: 2px solid var(--primary-color);
    background-color: var(--card-bg);
}

.form-status {
    font-size: 0.8rem;
    background-color: var(--warning-color);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 500;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Buttons */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn:active {
    transform: translateY(0);
}

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

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

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

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

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

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

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    justify-content: center;
    border-radius: 50%;
    background-color: transparent;
    color: var(--text-color);
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}

/* Main Content */
.app-main {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebars */
.sidebar {
    width: 280px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    overflow: hidden;
}

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

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.search-box {
    margin-top: 10px;
}

.search-box input {
    width: 100%;
    padding: 8px 12px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 0.9rem;
}

.search-box input:focus {
    outline: 2px solid var(--primary-color);
}

.field-categories {
    display: flex;
    padding: 0 20px;
    border-bottom: 1px solid var(--border-color);
}

.category {
    padding: 12px 0;
    flex: 1;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 2px solid transparent;
}

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

.category.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.fields-container {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.field-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.field-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 12px;
    cursor: move;
    user-select: none;
    transition: var(--transition);
    text-align: center;
}

.field-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.field-item i {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 8px;
    display: block;
}

.field-item span {
    font-size: 0.85rem;
    font-weight: 500;
}

.templates-section {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.templates-section h4 {
    font-size: 1rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.templates-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.template-item {
    padding: 12px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.template-item:hover {
    border-color: var(--primary-color);
    background-color: rgba(67, 97, 238, 0.05);
}

.template-item h5 {
    font-size: 0.9rem;
    margin-bottom: 4px;
}

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

/* Canvas */
.canvas-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.canvas-header {
    padding: 12px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.canvas-tabs {
    display: flex;
    gap: 4px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 4px;
}

.tab-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--text-color);
    background-color: var(--bg-color);
}

.tab-btn.active {
    color: var(--primary-color);
    background-color: rgba(67, 97, 238, 0.1);
}

.canvas-content {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.tab-content {
    display: none;
    height: 100%;
    flex-direction: column;
}

.tab-content.active {
    display: flex;
}

/* Builder Tab */
.pages-container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pages-tabs {
    display: flex;
    padding: 12px 24px 0;
    gap: 4px;
    overflow-x: auto;
    border-bottom: 1px solid var(--border-color);
}

.page-tab {
    padding: 10px 20px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    cursor: pointer;
    font-size: 0.9rem;
    white-space: nowrap;
    transition: var(--transition);
    position: relative;
}

.page-tab:hover {
    background-color: var(--bg-color);
}

.page-tab.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.page-tab .page-number {
    font-weight: 600;
    margin-right: 6px;
}

.page-content {
    flex: 1;
    overflow: auto;
    padding: 24px;
}

.drop-zone {
    min-height: 500px;
    background-color: var(--card-bg);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    transition: var(--transition);
}

.drop-zone.drag-over {
    border-color: var(--primary-color);
    background-color: rgba(67, 97, 238, 0.05);
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 60px 20px;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 0.95rem;
}

.form-field {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 16px;
    margin-bottom: 16px;
    transition: var(--transition);
    position: relative;
}

.form-field:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.form-field.selected {
    border-color: var(--primary-color);
    background-color: rgba(67, 97, 238, 0.05);
}

.field-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.field-label {
    font-weight: 600;
    font-size: 0.95rem;
    flex: 1;
}

.field-label .required {
    color: var(--danger-color);
    margin-left: 4px;
}

.field-actions {
    display: flex;
    gap: 8px;
}

.field-action-btn {
    width: 28px;
    height: 28px;
    border-radius: 4px;
    border: none;
    background-color: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.field-action-btn:hover {
    background-color: var(--border-color);
    color: var(--text-color);
}

.field-preview {
    pointer-events: none;
}

.field-preview input,
.field-preview textarea,
.field-preview select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 0.9rem;
    font-family: var(--font-family);
}

.field-preview input:focus,
.field-preview textarea:focus,
.field-preview select:focus {
    outline: 2px solid var(--primary-color);
}

.field-preview textarea {
    min-height: 80px;
    resize: vertical;
}

.radio-group,
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.radio-option,
.checkbox-option {
    display: flex;
    align-items: center;
    gap: 8px;
}

.field-drag-handle {
    position: absolute;
    left: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border-radius: 4px;
    background-color: var(--border-color);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: move;
    opacity: 0;
    transition: var(--transition);
}

.form-field:hover .field-drag-handle {
    opacity: 1;
}

.canvas-footer {
    padding: 12px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.form-stats {
    display: flex;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Preview Tab */
.preview-header {
    padding: 12px 24px;
    border-bottom: 1px solid var(--border-color);
}

.preview-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.preview-content {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.device-frame {
    flex: 1;
    padding: 40px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    overflow: auto;
}

.device-frame.desktop {
    background-color: var(--bg-color);
}

.device-frame.tablet {
    padding: 60px;
}

.device-frame.mobile {
    padding: 80px 20px;
}

.form-preview {
    width: 100%;
    max-width: 600px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 32px;
}

.debug-panel {
    width: 300px;
    border-left: 1px solid var(--border-color);
    background-color: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.debug-panel h4 {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.debug-log {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.debug-entry {
    padding: 8px 12px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    margin-bottom: 8px;
    font-size: 0.85rem;
}

.debug-entry .time {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-right: 8px;
}

/* Logic Rules Tab */
.logic-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.rules-container {
    padding: 24px;
    overflow-y: auto;
}

.rule-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 16px;
    overflow: hidden;
}

.rule-header {
    padding: 16px;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.rule-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.rule-title i {
    color: var(--primary-color);
}

.rule-body {
    padding: 16px;
}

.rule-condition {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.rule-when {
    font-weight: 500;
    color: var(--primary-color);
}

.rule-select,
.rule-operator,
.rule-input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 0.9rem;
}

.rule-then {
    font-weight: 500;
    color: var(--success-color);
    margin-left: 20px;
}

.rule-actions {
    margin-top: 16px;
    display: flex;
    gap: 8px;
}

/* Inspector */
.inspector-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.empty-inspector {
    text-align: center;
    color: var(--text-muted);
    padding: 60px 20px;
}

.inspector-section {
    margin-bottom: 24px;
}

.inspector-section h4 {
    font-size: 0.95rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-color);
}

.inspector-field {
    margin-bottom: 16px;
}

.inspector-field label {
    display: block;
    font-size: 0.85rem;
    margin-bottom: 6px;
    color: var(--text-muted);
    font-weight: 500;
}

.inspector-field input,
.inspector-field textarea,
.inspector-field select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 0.9rem;
    font-family: var(--font-family);
    transition: var(--transition);
}

.inspector-field input:focus,
.inspector-field textarea:focus,
.inspector-field select:focus {
    outline: 2px solid var(--primary-color);
    border-color: var(--primary-color);
}

.inspector-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
}

/* Control Bar */
.control-bar {
    padding: 12px 24px;
    border-top: 1px solid var(--border-color);
    background-color: var(--header-bg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.control-left,
.control-right {
    display: flex;
    gap: 10px;
}

.control-center {
    flex: 1;
    max-width: 300px;
}

.progress-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.progress-bar {
    flex: 1;
    height: 6px;
    background-color: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    display: block;
    height: 100%;
    width: 30%;
    background-color: var(--primary-color);
    border-radius: 3px;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    width: 90%;
    max-width: 700px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-close {
    font-size: 1.5rem;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: var(--transition);
}

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

.modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.help-sections {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.help-section h4 {
    margin-bottom: 12px;
    color: var(--primary-color);
}

.help-section p {
    margin-bottom: 8px;
    line-height: 1.5;
}

.help-section code {
    background-color: var(--bg-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9rem;
}

.help-section ul {
    padding-left: 20px;
}

.help-section li {
    margin-bottom: 8px;
}

.help-section kbd {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 2px 6px;
    font-family: monospace;
    font-size: 0.85rem;
}

.submissions-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.submission-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 16px;
}

.submission-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.submission-date {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.submission-data {
    font-size: 0.9rem;
    color: var(--text-color);
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 16px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 350px;
    animation: slideIn 0.3s ease;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

.toast.info {
    border-left: 4px solid var(--info-color);
}

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

/* Dropdown */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--card-bg);
    min-width: 180px;
    box-shadow: var(--shadow);
    border-radius: var(--border-radius);
    z-index: 100;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content a {
    color: var(--text-color);
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    font-size: 0.9rem;
    transition: var(--transition);
}

.dropdown-content a:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
}

/* Responsive */
@media (max-width: 1200px) {
    .sidebar {
        width: 240px;
    }
    
    .field-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .right-sidebar {
        position: fixed;
        right: 0;
        top: 64px;
        height: calc(100vh - 64px);
        z-index: 200;
        transform: translateX(100%);
        transition: transform 0.3s ease;
    }
    
    .right-sidebar.open {
        transform: translateX(0);
    }
    
    .preview-content {
        flex-direction: column;
    }
    
    .debug-panel {
        width: 100%;
        height: 300px;
        border-left: none;
        border-top: 1px solid var(--border-color);
    }
}