/**
 * SQL-Report Studio Pro - Styles
 * Modern, professional UI with light/dark theme support
 */

/* ===== CSS Variables ===== */
:root {
    /* Light theme colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-hover: #e5e7eb;
    --bg-active: #dbeafe;
    
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    
    --border-color: #e5e7eb;
    --border-hover: #d1d5db;
    
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: #dbeafe;
    
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --info-color: #3b82f6;
    
    --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);
    
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Consolas', 'Monaco', 'Courier New', monospace;
    
    --header-height: 60px;
    --toolbar-height: 48px;
    --sidebar-width: 280px;
    --bottom-panel-height: 300px;
}

[data-theme="dark"] {
    --bg-primary: #1f2937;
    --bg-secondary: #111827;
    --bg-tertiary: #374151;
    --bg-hover: #4b5563;
    --bg-active: #1e3a8a;
    
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    
    --border-color: #374151;
    --border-hover: #4b5563;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.7);
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-secondary);
    overflow: hidden;
}

/* ===== Application Container ===== */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
}

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

.header-left, .header-center, .header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.app-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.app-icon {
    font-size: 24px;
}

/* Tabs */
.tabs {
    display: flex;
    gap: var(--spacing-xs);
}

.tab {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}

.tab:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

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

/* ===== Toolbar ===== */
.toolbar {
    height: var(--toolbar-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
    gap: var(--spacing-sm);
    overflow-x: auto;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--border-color);
}

.tool-btn, .toolbar-btn, .icon-btn {
    padding: var(--spacing-sm);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-primary);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all 0.2s;
}

.tool-btn:hover, .toolbar-btn:hover, .icon-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

.tool-btn.active {
    background: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.toolbar-btn {
    padding: var(--spacing-sm) var(--spacing-md);
}

.icon-btn {
    width: 32px;
    height: 32px;
    justify-content: center;
}

/* Checkbox labels */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    cursor: pointer;
}

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

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

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

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

.sidebar-header h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

/* Canvas Container */
.canvas-container {
    flex: 1;
    position: relative;
    background: var(--bg-secondary);
    overflow: hidden;
}

#canvas {
    width: 100%;
    height: 100%;
    display: block;
    cursor: default;
}

.canvas-info {
    position: absolute;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

/* ===== Bottom Panel ===== */
.bottom-panel {
    height: var(--bottom-panel-height);
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.panel-header {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-tabs {
    display: flex;
    gap: var(--spacing-xs);
}

.panel-tab {
    padding: var(--spacing-xs) var(--spacing-md);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s;
}

.panel-tab:hover {
    color: var(--text-primary);
}

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

.panel-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.panel-content {
    flex: 1;
    overflow: hidden;
}

.panel-tab-content {
    display: none;
    height: 100%;
}

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

/* SQL Editor */
.sql-editor {
    width: 100%;
    height: 100%;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 13px;
    resize: none;
    outline: none;
}

/* Results Grid */
.results-toolbar {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.results-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.results-grid {
    height: calc(100% - 40px);
    overflow: auto;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.results-table th {
    position: sticky;
    top: 0;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 600;
    text-align: left;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.results-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.results-table tbody tr:hover {
    background: var(--bg-hover);
}

/* Console Output */
.console-output {
    height: 100%;
    padding: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 12px;
    overflow-y: auto;
    background: var(--bg-secondary);
}

/* ===== Buttons ===== */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

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

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

/* ===== Modals ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1001;
    max-width: 90vw;
    max-height: 90vh;
}

.modal.hidden, .modal-overlay.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 500px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

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

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.modal-close:hover {
    background: var(--bg-hover);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
    font-size: 13px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font-family);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* ===== Upload Zone ===== */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.upload-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.upload-icon {
    font-size: 48px;
}

.upload-zone p {
    color: var(--text-primary);
    font-weight: 500;
}

.upload-zone small {
    color: var(--text-secondary);
}

/* ===== Notifications ===== */
.notifications-container {
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.notification {
    min-width: 300px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.notification-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.notification-icon {
    font-size: 18px;
}

.notification-message {
    color: var(--text-primary);
    font-size: 14px;
}

.notification-close {
    background: transparent;
    border: none;
    font-size: 20px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.notification-close:hover {
    background: var(--bg-hover);
}

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

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

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

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

/* ===== Empty States ===== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-secondary);
}

.empty-state p {
    font-size: 16px;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.empty-state small {
    font-size: 13px;
}

/* ===== Data Sources Tree ===== */
.data-sources-tree {
    font-size: 13px;
}

/* ===== Scrollbars ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }
}

@media (max-width: 768px) {
    .header-center {
        display: none;
    }
    
    .sidebar {
        position: absolute;
        z-index: 50;
        height: calc(100vh - var(--header-height) - var(--toolbar-height));
    }
}