/* ==============================================================================
   After SELECT - Stream UI (Databricks Folder Theme)
   ============================================================================== */

:root {
    --color-orange: #FF3621;
    --color-navy: #1B3139;
    --color-navy-dark: #0F172A;
    --color-bg: #E5E7EB;
    --color-paper: #FFFFFF;
    --color-code-bg: #F8FAFC;
    --color-text-primary: #1B3139;
    --color-text-secondary: #64748B;
    --color-text-ghost: #CBD5E1;
    --color-border: #E2E8F0;

    --radius-folder: 12px;
    --shadow-folder: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--color-bg);
    font-family: 'Inter', sans-serif;
    color: var(--color-text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding-top: 20px;
    /* Reduced from 60px */
}

.app-background {
    width: 100%;
    max-width: 95%;
    position: relative;
    padding: 0 20px 40px;
}

/* Main Card */
.main-folder-card {
    background: var(--color-paper);
    width: 100%;
    min-height: 80vh;
    border-radius: var(--radius-folder);
    box-shadow: var(--shadow-folder);
    position: relative;
    z-index: 5;
    display: flex;
    flex-direction: column;
    padding: 40px;
    overflow: visible;
    /* Allow tabs to stick out visually */
}

/* ==============================================================================
   Sticky Header & HUD
   ============================================================================== */
.sticky-header {
    position: sticky;
    top: 0;
    z-index: 50;
    margin: -40px -40px 0 -40px;
    /* Negative margin to span full width of card */
    padding: 0;
    background: var(--color-paper);
    border-radius: var(--radius-folder) var(--radius-folder) 0 0;
    transition: box-shadow 0.3s ease;
}

/* Logo Header */
.logo-header {
    display: flex;
    align-items: center;
    padding: 16px 40px 0 40px;
    background: var(--color-paper);
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.logo-link:hover {
    opacity: 0.85;
}

.logo-icon {
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    align-items: baseline;
    gap: 4px;
    font-family: 'Inter', sans-serif;
}

.logo-name {
    font-size: 20px;
    font-weight: 800;
    color: var(--color-navy);
    letter-spacing: -0.02em;
}

.logo-sql {
    font-size: 20px;
    font-weight: 800;
    color: #1e3a5f;
    letter-spacing: -0.02em;
}

/* Tabs Container - Clean Horizontal Scroll */
.folder-tabs-inner {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
    display: flex;
    align-items: center;
    gap: 32px;
    /* gap-8 */
    z-index: 60;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 12px 40px 0 40px;
    /* Compact top padding */
    background-color: var(--color-paper);
    border-bottom: 1px solid var(--color-border);
    /* The single subtle grey line */

    /* Hide scrollbar */
    scrollbar-width: none;
    /* Firefox */
    -ms-overflow-style: none;
    /* IE/Edge */

    /* Gradient Fade on Right */
    mask-image: linear-gradient(to right, black 90%, transparent 100%);
    -webkit-mask-image: linear-gradient(to right, black 90%, transparent 100%);
}

.folder-tabs-inner::-webkit-scrollbar {
    display: none;
    /* Chrome/Safari */
}

/* Individual Tab Items */
.folder-tab {
    padding: 12px 0;
    /* Vertical padding */
    background: transparent;
    color: #6B7280;
    /* text-gray-500 */
    border-radius: 0;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    flex-shrink: 0;
    min-width: fit-content;
    display: flex;
    flex-direction: row;
    /* Side by side */
    align-items: baseline;
    gap: 8px;
    border: none;
    position: relative;
    transition: color 0.2s ease;
}

.folder-tab:hover {
    background: transparent;
    color: var(--color-navy);
}

.folder-tab .tab-number {
    font-size: 12px;
    font-weight: 500;
    opacity: 0.6;
    font-family: 'JetBrains Mono', monospace;
    /* Monospaced for numbers looks technical/clean */
}

.folder-tab .tab-label {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
}

/* Active State */
.folder-tab.active {
    background: transparent;
    color: var(--color-navy);
    font-weight: 700;
    border: none;
    padding-top: 12px;
    z-index: 10;
}

/* Active Indicator (Bottom Border) */
.folder-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-orange);
}

.folder-tab.active .tab-number {
    opacity: 1;
    color: var(--color-orange);
    font-weight: 700;
}

.folder-tab.active .tab-label {
    font-weight: 700;
}

/* Completed State */
.folder-tab.completed {
    color: #059669;
    /* text-green-600 */
}

.folder-tab.completed .tab-number {
    opacity: 0.8;
    color: #059669;
}

.folder-tab.completed .tab-label {
    color: #059669;
}

.folder-tab.completed .tab-check {
    display: inline-flex;
    margin-left: 4px;
    color: #059669;
}

/* Hide checkmark by default */
.folder-tab .tab-check {
    display: none;
}

/* Future/Inactive State - lighter weight */
.folder-tab.inactive {
    opacity: 0.7;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .folder-tabs-inner {
        gap: 24px;
        /* gap-6 */
        padding: 12px 20px 0 20px;
    }
}



/* HUD Header Layout */
.folder-header {
    padding: 16px 40px 16px 40px;
    /* Compact spacing */
    position: relative;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
    /* Add separator below header */
}

.hud-top-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.hud-bottom-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-top: 12px;
}

.lesson-id {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.task-counter {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-orange);
    background: #FFF1F0;
    padding: 4px 12px;
    border-radius: 100px;
}

.lesson-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-navy);
    /* Tighter spacing */
}

/* Progress Bar */
.progress-track {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background: transparent;
}

.progress-fill {
    height: 100%;
    background: var(--color-orange);
    width: 2%;
    /* Default start */
    transition: width 0.4s ease;
    box-shadow: 0 0 10px rgba(255, 54, 33, 0.4);
}

/* Welcome Accordion */
.welcome-accordion {
    margin-top: 32px;
    margin-bottom: 40px;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 20px;
}

.welcome-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
    padding: 8px 0;
}

.welcome-title-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.welcome-title-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-navy);
}

.chevron-icon {
    transition: transform 0.3s ease;
    color: var(--color-text-secondary);
}

.welcome-accordion.open .chevron-icon {
    transform: rotate(180deg);
}

.welcome-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
    opacity: 0;
}

.welcome-accordion.open .welcome-content {
    max-height: 5000px;
    opacity: 1;
    margin-top: 12px;
}

.welcome-content p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-navy);
    margin-bottom: 12px;
}

.welcome-instruction {
    color: var(--color-text-secondary) !important;
}

/* Stream Container */
.stream-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
    padding-bottom: 40px;
    /* Reduced since nav footer adds spacing */
}

/* ==============================================================================
   Lesson Navigation Footer
   ============================================================================== */
.lesson-nav-footer {
    margin-top: 64px;
    /* mt-16 */
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    /* Subtle separator */
    display: flex;
    justify-content: flex-end;
    /* Right aligned, space for future Previous button */
}

.lesson-nav-footer.hidden {
    display: none;
}

.next-lesson-link {
    display: flex;
    align-items: center;
    gap: 16px;
    text-decoration: none;
    padding: 16px 20px;
    border-radius: 8px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.next-lesson-link:hover {
    background: rgba(255, 54, 33, 0.04);
}

.next-lesson-link:hover .next-lesson-label,
.next-lesson-link:hover .next-lesson-title {
    color: var(--color-orange);
}

.next-lesson-link:hover .next-lesson-icon {
    color: var(--color-orange);
    transform: translateX(4px);
}

.next-lesson-content {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
}

.next-lesson-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--color-text-secondary);
    margin-bottom: 4px;
    transition: color 0.2s ease;
}

.next-lesson-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-navy);
    transition: color 0.2s ease;
}

.next-lesson-icon {
    color: var(--color-text-secondary);
    flex-shrink: 0;
    transition: all 0.2s ease;
}

/* ==============================================================================
   Lesson Block (The "Book Section")
   ============================================================================== */
.lesson-block {
    opacity: 1;
    transition: all 0.5s ease;
}

/* Future State (Ghosted/Preview) */
.lesson-block.future {
    opacity: 0.6;
    /* Increased visibility as requested */
    filter: grayscale(1);
    pointer-events: none;
    user-select: none;
}

/* Completed State */
.lesson-block.completed {
    opacity: 1;
    /* Fully visible history */
}

/* Row 1: Narrative Text */
.narrative-row {
    margin-bottom: 16px;
    max-width: 800px;
}

.narrative-text {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-navy);
}

/* Row 2: Code Environment */
.code-row {
    position: relative;
    width: 100%;
    background: var(--color-code-bg);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: 0;
}

/* Run Query Button */
.run-query-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    margin: 20px 16px 20px 0;
    background: var(--color-navy);
    color: white;
    border: none;
    border-radius: 6px;
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    flex-shrink: 0;
}

.run-query-btn:disabled {
    background: #CBD5E1;
    color: #94A3B8;
    cursor: not-allowed;
}

.run-query-btn:not(:disabled):hover {
    background: #2d4a6f;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(30, 58, 95, 0.3);
}

.run-query-btn svg {
    flex-shrink: 0;
}

/* Success Flash */
.lesson-block.completed .code-row {
    box-shadow: 0 0 0 2px #10B981;
    /* Green glow */
}

.typing-area {
    position: relative;
    padding: 24px;
    min-height: 80px;
    cursor: text;
    font-family: 'JetBrains Mono', monospace;
    font-size: 15px;
    line-height: 1.6;
    flex: 1;
}

.input-trap {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    z-index: 20;
    cursor: text;
}

.code-display {
    position: relative;
    z-index: 10;
    pointer-events: none;
    white-space: pre-wrap;
    word-break: break-all;
}

.char {
    transition: color 0.1s;
}

.char.pending {
    color: var(--color-text-ghost);
}

.char.correct {
    color: var(--color-navy-dark);
    font-weight: 500;
}

.char.incorrect {
    color: #DC2626;
    background: #fee2e2;
}

.char.case-error {
    color: #DC2626;
    background: #fef2f2;
    text-decoration: underline;
    text-decoration-color: #DC2626;
    text-decoration-style: wavy;
    text-decoration-thickness: 1px;
}

.char.correct.comment {
    color: #94A3B8;
}

/* Case Sensitivity Hint */
.case-hint {
    margin-top: 8px;
    padding: 8px 12px;
    background: #FEF2F2;
    border-left: 3px solid #DC2626;
    border-radius: 4px;
    font-size: 12px;
    color: #991B1B;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.case-hint svg {
    flex-shrink: 0;
    color: #DC2626;
}

.case-hint.hidden {
    display: none;
}

/* ==============================================================================
   SEMANTIC ENTITY COLORING
   ============================================================================== */
/* Subtle colors for table and column names to help users understand data relationships.
   Colors apply ONLY after correct typing - error styling always takes precedence.
   This is for recognition, not correction. */

.char.correct.semantic-table {
    color: #4F46E5;
    /* Indigo-600 - for table names */
}

.char.correct.semantic-column {
    color: #059669;
    /* Emerald-600 - for column names */
}

/* Semantic coloring in result tables */
.result-table th.semantic-column-header {
    color: #059669;
    /* Emerald-600 - matches typing area column color */
}

/* ==============================================================================
   TABLE ORIGIN STYLING FOR JOIN RESULTS
   ============================================================================== */
/* Visual distinction for table sources in JOIN queries.
   Helps users understand which data came from which table.
   Uses subtle left border + very light background tint. */

/* Customers table origin - Indigo theme */
.result-table th.table-origin-customers {
    color: #4F46E5;
    border-left: 3px solid #6366F1;
    background: linear-gradient(90deg, #EEF2FF 0%, transparent 100%);
}

.result-table td.table-origin-customers {
    border-left: 3px solid #C7D2FE;
    background: #FAFAFF;
}

/* Orders table origin - Orange theme (matches product accent) */
.result-table th.table-origin-orders {
    color: #DC2626;
    border-left: 3px solid #FF3621;
    background: linear-gradient(90deg, #FEF2F2 0%, transparent 100%);
}

.result-table td.table-origin-orders {
    border-left: 3px solid #FECACA;
    background: #FFFAFA;
}

/* Products table origin - Amber theme */
.result-table th.table-origin-products {
    color: #D97706;
    border-left: 3px solid #F59E0B;
    background: linear-gradient(90deg, #FFFBEB 0%, transparent 100%);
}

.result-table td.table-origin-products {
    border-left: 3px solid #FDE68A;
    background: #FFFEF5;
}

/* Employees table origin - Purple theme */
.result-table th.table-origin-employees {
    color: #7C3AED;
    border-left: 3px solid #8B5CF6;
    background: linear-gradient(90deg, #F5F3FF 0%, transparent 100%);
}

.result-table td.table-origin-employees {
    border-left: 3px solid #DDD6FE;
    background: #FAFAFF;
}

/* Departments table origin - Cyan theme */
.result-table th.table-origin-departments {
    color: #0891B2;
    border-left: 3px solid #06B6D4;
    background: linear-gradient(90deg, #ECFEFF 0%, transparent 100%);
}

.result-table td.table-origin-departments {
    border-left: 3px solid #A5F3FC;
    background: #F0FDFF;
}

/* Categories table origin - Green theme */
.result-table th.table-origin-categories {
    color: #16A34A;
    border-left: 3px solid #22C55E;
    background: linear-gradient(90deg, #F0FDF4 0%, transparent 100%);
}

.result-table td.table-origin-categories {
    border-left: 3px solid #BBF7D0;
    background: #F0FDF4;
}

/* NULL value styling */
.result-table .null-value {
    color: #94A3B8;
    font-style: italic;
}


.custom-cursor {
    position: absolute;
    width: 2px;
    background-color: var(--color-orange);
    z-index: 15;
    pointer-events: none;
    display: none;
    animation: blink 1s infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

/* Row 3: Result Reveal (Accordion) */
.result-row {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    margin-top: 0;
}

.result-row.visible {
    max-height: 2000px;
    /* Allow enough height for tables */
    margin-top: 16px;
    opacity: 1;
}

/* Legal Footer inside Folder */
.legal-footer {
    border-top: 1px solid var(--color-border);
    padding: 32px 0 12px 0;
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: #94A3B8;
    /* text-slate-400 */
}

.legal-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    justify-content: center;
}

.legal-footer a {
    color: #64748B;
    /* text-slate-500 */
    text-decoration: none;
    transition: color 0.2s;
}

.legal-footer a:hover {
    color: var(--color-navy);
}

.copyright {
    font-size: 12px;
    color: #CBD5E1;
    /* text-slate-300 */
}

.result-table-container,
.result-message {
    animation: fadeIn 0.5s ease forwards;
    opacity: 0;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-table-container {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    font-family: 'JetBrains Mono', monospace;
}

.result-table th {
    background: #F8FAFC;
    color: var(--color-text-secondary);
    font-weight: 600;
    text-align: left;
    padding: 8px 16px;
    border-bottom: 1px solid var(--color-border);
}

.result-table td {
    padding: 8px 16px;
    border-bottom: 1px solid #F1F5F9;
    color: var(--color-text-primary);
}

.result-message {
    padding: 12px;
    font-size: 13px;
    color: #10B981;
    background: #ECFDF5;
    border-radius: 6px;
}

/* Loading */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.loading-overlay.hidden {
    display: none;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #ddd;
    border-top-color: var(--color-orange);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 16px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Multi-result Styles */
.result-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: #64748b;
    /* slate-500 */
    margin-bottom: 0.5rem;
    margin-top: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.result-label:first-child {
    margin-top: 0;
}

/* ==============================================================================
   Table Viewer Modal & HUD Controls
   ============================================================================== */

/* New HUD Controls */
.hud-controls {
    display: flex;
    flex-direction: row;
    /* Changed from column to row */
    align-items: center;
    /* Align vertically centered */
    gap: 12px;
    /* Increased gap for better spacing */
}

/* HUD Actions Container */
.hud-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Reset Lesson Button */
.reset-lesson-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border: 1px solid var(--color-border);
    padding: 6px;
    border-radius: 50%;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.reset-lesson-btn:hover {
    background: #FFF1F0;
    color: var(--color-orange);
    border-color: var(--color-orange);
}

.reset-lesson-btn.hidden {
    display: none;
}

.view-table-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: white;
    border: 1px solid var(--color-border);
    padding: 6px 12px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 600;
    color: var(--color-navy);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.view-table-btn:hover {
    background: #F8FAFC;
    color: var(--color-orange);
    border-color: var(--color-orange);
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay:not(.hidden) {
    opacity: 1;
    pointer-events: auto;
}

.modal-container {
    background: white;
    width: 90%;
    max-width: 1000px;
    height: 80vh;
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

.modal-overlay:not(.hidden) .modal-container {
    transform: scale(1);
}

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

.modal-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-navy);
}

.close-modal-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-text-secondary);
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s;
}

.close-modal-btn:hover {
    background: #F1F5F9;
    color: var(--color-orange);
}

.modal-body {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.table-sidebar {
    width: 250px;
    background: #F8FAFC;
    border-right: 1px solid var(--color-border);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
}

.sidebar-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.table-item {
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-navy);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.table-item:hover {
    background: #E2E8F0;
}

.table-item.active {
    background: white;
    color: var(--color-orange);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.table-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: white;
    overflow: hidden;
}

.table-content-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-search-input {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 13px;
    width: 250px;
    outline: none;
    transition: border-color 0.2s;
}

.table-search-input:focus {
    border-color: var(--color-orange);
}

.table-data-container {
    flex: 1;
    overflow: auto;
    padding: 0;
}

.data-grid {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    font-family: 'JetBrains Mono', monospace;
}

.data-grid th {
    position: sticky;
    top: 0;
    background: #F8FAFC;
    padding: 10px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
    z-index: 10;
}

.data-grid td {
    padding: 10px 16px;
    border-bottom: 1px solid #F1F5F9;
    color: var(--color-navy);
    white-space: nowrap;
}

.data-grid tr:hover td {
    background: #F8FAFC;
}

/* Semantic coloring in View Tables modal */
.data-grid th.semantic-column-header {
    color: #059669;
    /* Emerald-600 - matches typing area column color */
}

.empty-state {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    color: var(--color-text-secondary);
    font-size: 14px;
}

/* =============================================================================
   HEADER AUTH CONTROLS
   ============================================================================= */

.logo-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

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

.btn-signin {
    background: white;
    border: 1px solid var(--color-border);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-navy);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-signin:hover {
    border-color: var(--color-navy);
    background: #F8FAFC;
}

.btn-start-lesson {
    background: var(--color-navy);
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-start-lesson:hover {
    background: #2d4a6f;
}

.btn-pro,
.btn-upgrade {
    background: linear-gradient(135deg, var(--color-navy), #2d4a6f);
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(30, 58, 95, 0.3);
}

.btn-pro:hover,
.btn-upgrade:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(30, 58, 95, 0.4);
}

.pro-badge {
    background: linear-gradient(135deg, var(--color-navy), #2d4a6f);
    color: white;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(30, 58, 95, 0.3);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-navy), #2d4a6f);
    border: 2px solid white;
    color: white;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.user-avatar:hover {
    transform: scale(1.05);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 200px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--color-border);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 1000;
    overflow: hidden;
}

.user-menu.open .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-info {
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
}

.user-name {
    display: block;
    font-weight: 600;
    color: var(--color-navy);
    font-size: 14px;
}

.user-email {
    display: block;
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

.signout-btn {
    width: 100%;
    padding: 12px 16px;
    background: none;
    border: none;
    text-align: left;
    font-size: 13px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.signout-btn:hover {
    background: #FFF1F0;
    color: var(--color-orange);
}

/* =============================================================================
   AUTH MODAL
   ============================================================================= */

.auth-modal-container {
    background: white;
    width: 100%;
    max-width: 400px;
    border-radius: 16px;
    padding: 48px 32px 32px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.auth-modal-container .close-modal-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--color-text-secondary);
    border-radius: 50%;
    transition: all 0.2s ease;
    z-index: 10;
}

.auth-modal-container .close-modal-btn:hover {
    background: #F1F5F9;
    color: var(--color-navy);
}

/* Auth Logo */
.auth-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 24px;
}

.auth-logo-text {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.auth-logo-name {
    font-size: 22px;
    font-weight: 800;
    color: var(--color-navy);
    letter-spacing: -0.02em;
}

.auth-logo-sql {
    font-size: 22px;
    font-weight: 800;
    color: #1e3a5f;
    letter-spacing: -0.02em;
}

.auth-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    background: #F1F5F9;
    padding: 4px;
    border-radius: 12px;
}

.auth-tab {
    flex: 1;
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.auth-tab.active {
    background: white;
    color: var(--color-navy);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.auth-form.hidden {
    display: none;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-navy);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.form-group input::placeholder {
    color: #94A3B8;
}

.auth-submit-btn {
    width: 100%;
    padding: 14px;
    background: var(--color-orange);
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
}

.auth-submit-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(255, 54, 33, 0.35);
}

.auth-submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.auth-error {
    padding: 12px;
    background: #FEE2E2;
    border-radius: 8px;
    color: #DC2626;
    font-size: 13px;
    text-align: center;
}

.auth-error.hidden {
    display: none;
}

.auth-error.auth-success {
    background: #FFF7ED;
    color: var(--color-navy);
    border: 1px solid rgba(255, 54, 33, 0.2);
}



/* =============================================================================
   PRO MODAL
   ============================================================================= */

.pro-modal-container {
    background: white;
    width: 100%;
    max-width: 440px;
    border-radius: 20px;
    padding: 40px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
}

.pro-modal-container .close-modal-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--color-text-secondary);
    border-radius: 50%;
    transition: all 0.2s ease;
}

.pro-modal-container .close-modal-btn:hover {
    background: #F1F5F9;
    color: var(--color-navy);
}

.pro-badge-large {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-navy), #2d4a6f);
    color: white;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    box-shadow: 0 4px 12px rgba(30, 58, 95, 0.3);
}

.pro-modal-content h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 8px;
}

.pro-subtitle {
    color: var(--color-text-secondary);
    font-size: 15px;
    margin-bottom: 24px;
}

.pro-features {
    list-style: none;
    padding: 0;
    margin: 0 auto 24px auto;
    text-align: left;
    display: inline-block;
}

.pro-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 14px;
    color: var(--color-navy);
    border-bottom: 1px solid #F1F5F9;
}

.pro-features li svg {
    flex-shrink: 0;
}

.pro-features li:last-child {
    border-bottom: none;
}

.pro-price {
    margin-bottom: 20px;
}

.price-amount {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-navy);
}

.price-label {
    display: block;
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

.pro-cta-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--color-navy), #2d4a6f);
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 15px rgba(30, 58, 95, 0.35);
}

.pro-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 58, 95, 0.45);
}

.pro-note {
    margin-top: 16px;
    font-size: 12px;
    color: var(--color-text-secondary);
}

/* =============================================================================
   LOCKED MODAL
   ============================================================================= */

.locked-modal-container {
    background: white;
    width: 100%;
    max-width: 400px;
    border-radius: 20px;
    padding: 40px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
}

.locked-modal-container .close-modal-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--color-text-secondary);
    border-radius: 50%;
    transition: all 0.2s ease;
}

.locked-modal-container .close-modal-btn:hover {
    background: #F1F5F9;
    color: var(--color-navy);
}

.lock-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.locked-content h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 8px;
}

.locked-content p {
    color: var(--color-text-secondary);
    font-size: 14px;
    margin-bottom: 8px;
}

.locked-subtitle {
    margin-bottom: 24px !important;
}

.locked-content .pro-cta-btn {
    margin-top: 16px;
}

/* ==============================================================================
   LOCKED LESSON OVERLAY (Curiosity-First Paywall)
   ============================================================================== */
/* This overlay appears INSIDE locked lessons, showing blurred content behind it */

.stream-container.lesson-locked {
    filter: blur(8px);
    pointer-events: none;
    user-select: none;
    opacity: 0.6;
}

.locked-lesson-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 20px;
}

.locked-lesson-overlay.hidden {
    display: none;
}

.locked-overlay-content {
    background: white;
    border-radius: 16px;
    padding: 40px 48px;
    max-width: 420px;
    text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    border: 1px solid #e5e7eb;
    position: relative;
}

.locked-overlay-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: transparent;
    border: none;
    color: #94A3B8;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.locked-overlay-close:hover {
    background: #F1F5F9;
    color: var(--color-navy);
}

.locked-icon {
    color: #6366F1;
    margin-bottom: 20px;
}

.locked-overlay-title {
    font-size: 24px;
    font-weight: 800;
    color: var(--color-navy);
    margin-bottom: 8px;
}

.locked-overlay-lesson {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-orange);
    margin-bottom: 16px;
}

.locked-overlay-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
}

.locked-overlay-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 8px;
    margin-bottom: 24px;
}

.locked-overlay-price .price-amount {
    font-size: 36px;
    font-weight: 800;
    color: var(--color-navy);
}

.locked-overlay-price .price-note {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.locked-overlay-cta {
    width: 100%;
    background: linear-gradient(135deg, #1e3a5f 0%, #1e4a7f 100%);
    color: white;
    border: none;
    padding: 16px 32px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 4px 15px rgba(30, 58, 138, 0.25);
}

.locked-overlay-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(30, 58, 138, 0.35);
}

.locked-overlay-guarantee {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 16px;
    letter-spacing: 0.01em;
}