/**
 * MathPad Web - Stylesheet
 */

/* CSS Variables */
:root {
    /* Colors */
    --bg-primary: #1e1e1e;
    --bg-secondary: #252526;
    --bg-tertiary: #2d2d30;
    --bg-hover: #3e3e42;
    --bg-active: #094771;

    --text-primary: #d4d4d4;
    --text-secondary: #858585;
    --text-muted: #6e6e6e;

    --border-color: #3e3e42;
    --border-light: #454545;

    --accent-primary: #007acc;
    --accent-hover: #1c97ea;
    --accent-active: #0062a3;

    --error-color: #f44747;
    --warning-color: #cca700;
    --success-color: #4ec9b0;
    --star-label-color: #57ffa3;

    /* Syntax highlighting */
    --syn-number: #b5cea8;
    --syn-string: #ce9178;
    --syn-comment: #6a9955;
    --syn-keyword: #569cd6;
    --syn-function: #dcdcaa;
    --syn-builtin: #c586c0;
    --syn-variable: #9cdcfe;
    --syn-variable-def: #4fc1ff;
    --syn-operator: #d4d4d4;
    --syn-bracket: #ffd700;
    --syn-brace: #da70d6;
    --syn-punctuation: #20ebc2;

    /* Editor */
    --caret-color: #d4d4d4;
    --selection-bg: rgba(0, 122, 204, 0.4);

    /* Overlays */
    --overlay-bg: rgba(0, 0, 0, 0.5);

    /* Sizing */
    --header-height: 48px;
    --sidebar-width: 220px;
    --details-width: 200px;
    --status-height: 24px;
    --tab-height: 35px;

    /* Fonts */
    --font-ui: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: 'Consolas', 'Monaco', 'Courier New', monospace;
}

/* Light Theme - VS Code Light style */
[data-theme="light"] {
    /* Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f3f3f3;
    --bg-tertiary: #ececec;
    --bg-hover: #e0e0e0;
    --bg-active: #0060c0;

    --text-primary: #1e1e1e;
    --text-secondary: #616161;
    --text-muted: #ababab;

    --border-color: #d4d4d4;
    --border-light: #e0e0e0;

    --accent-primary: #007acc;
    --accent-hover: #0062a3;
    --accent-active: #004e82;

    --error-color: #e51400;
    --warning-color: #bf8803;
    --success-color: #16825d;
    --star-label-color: #007d38;

    /* Syntax highlighting */
    --syn-number: #098658;
    --syn-string: #a31515;
    --syn-comment: #008000;
    --syn-keyword: #0000ff;
    --syn-function: #795e26;
    --syn-builtin: #af00db;
    --syn-variable: #001080;
    --syn-variable-def: #0070c1;
    --syn-operator: #1e1e1e;
    --syn-bracket: #d4a017;
    --syn-brace: #af00db;
    --syn-punctuation: #36786a;

    /* Editor */
    --caret-color: #1e1e1e;
    --selection-bg: rgba(0, 122, 204, 0.25);

    /* Overlays */
    --overlay-bg: rgba(0, 0, 0, 0.3);
}

/* Theme toggle button */
#btn-theme {
    font-size: 18px;
    padding: 2px 8px;
}

/* Sidebar theme row - hidden by default, shown on small screens */
.sidebar-actions-row.sidebar-theme-row {
    display: none;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-ui);
    font-size: 13px;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.4;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh; /* Dynamic viewport height - adjusts for mobile URL bar */
}

/* Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 16px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.header-left {
    display: flex;
    align-items: baseline;
    gap: 12px;
}

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

.app-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
}

.header-center {
    display: flex;
    gap: 8px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Buttons */
button {
    font-family: var(--font-ui);
    font-size: 13px;
    cursor: pointer;
    border: none;
    border-radius: 4px;
    padding: 6px 14px;
    transition: background-color 0.15s;
}

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

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

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

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

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

.btn-icon {
    background-color: transparent;
    color: var(--text-secondary);
    padding: 6px 10px;
}

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

#btn-undo, #btn-redo {
    font-size: 18px;
    padding: 2px 8px;
    color: var(--text-primary);
}

#btn-undo:disabled, #btn-redo:disabled {
    color: var(--text-muted);
    cursor: default;
}

#btn-undo:disabled:hover, #btn-redo:disabled:hover {
    background-color: transparent;
}

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

.btn-danger:hover {
    background-color: #d93939;
}

/* Toggle */
.toggle-label {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.toggle-label input {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.toggle-label:hover {
    color: var(--text-primary);
}

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

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

.sidebar-header {
    padding: 12px 16px 8px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

.category-group {
    margin-bottom: 2px;
}

.category-header {
    display: flex;
    align-items: center;
    padding: 6px 12px;
    cursor: pointer;
    user-select: none;
    color: var(--text-primary);
}

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

.category-arrow {
    width: 16px;
    font-size: 10px;
    color: var(--text-secondary);
}

.category-name {
    flex: 1;
    font-weight: 500;
}

.category-count {
    font-size: 11px;
    color: var(--text-muted);
}

.category-records {
    padding-left: 8px;
}

.category-records.hidden {
    display: none;
}

.record-item {
    padding: 5px 12px 5px 24px;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-secondary);
    border-radius: 3px;
    margin: 1px 4px;
}

.record-item:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.record-item.active {
    background-color: var(--bg-active);
    color: white;
}

.record-item.special {
    color: var(--warning-color);
}

.sidebar-actions {
    padding: 12px;
    margin-top: auto;
    flex-shrink: 0;
    border-top: 1px solid var(--border-color);
}

.btn-new-record {
    width: 100%;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px dashed var(--border-color);
}

.btn-new-record:hover {
    background-color: var(--bg-hover);
    border-style: solid;
}

.sidebar-actions-row {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.sidebar-actions-row button {
    flex: 1;
    padding: 6px 8px;
    font-size: 12px;
}


/* Editor Main Area */
.editor-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* Tab Bar */
.tab-bar {
    display: flex;
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    min-height: var(--tab-height);
    overflow-x: auto;
    overflow-y: hidden;
}

.tab {
    display: flex;
    align-items: center;
    padding: 0 12px;
    height: var(--tab-height);
    background-color: var(--bg-tertiary);
    border-right: 1px solid var(--border-color);
    cursor: pointer;
    white-space: nowrap;
    max-width: 200px;
}

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

.tab.active {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--bg-primary);
    margin-bottom: -1px;
}

.tab-title {
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-secondary);
}

.tab.active .tab-title {
    color: var(--text-primary);
}

.tab-close {
    margin-left: 8px;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 3px;
    color: var(--text-muted);
    font-size: 16px;
}

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

/* Editor Container */
.editor-container {
    flex: 1;
    overflow: hidden;
    position: relative;
    background-color: var(--bg-primary);
}

.no-editor-message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-muted);
    font-size: 14px;
}

/* Simple Editor Styles */
.simple-editor {
    display: flex;
    flex: 1;
    min-height: 0;
    width: 100%;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.5;
}

.line-numbers {
    width: 50px;
    padding: 8px 0;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    text-align: right;
    overflow: hidden;
    user-select: none;
}

.line-number {
    padding: 0 12px 0 8px;
    color: var(--text-muted);
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
    box-sizing: border-box;
}

.editor-area {
    flex: 1;
    position: relative;
    overflow: hidden;
}

.highlight-layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 8px;
    overflow: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
    pointer-events: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.5;
}

.editor-textarea {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 8px;
    border: none;
    outline: none;
    resize: none;
    background: transparent;
    color: transparent;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.5;
    caret-color: var(--caret-color);
    overflow: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.editor-textarea::selection {
    background-color: var(--selection-bg);
}

/* Hidden element for measuring line heights */
.editor-measure {
    position: absolute;
    visibility: hidden;
    padding: 0 8px;
    box-sizing: border-box;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.5;
    /* Width set dynamically by JS to match textarea.clientWidth */
}

/* Syntax highlighting tokens */
.tok-number {
    color: var(--syn-number);
}

.tok-comment {
    color: var(--syn-comment);
    font-style: italic;
}

.tok-builtin {
    color: var(--syn-builtin);
}

.tok-function {
    color: var(--syn-function);
}

.tok-variable {
    color: var(--syn-variable);
}

.tok-variable-def {
    color: var(--syn-variable-def);
}

.tok-operator {
    color: var(--syn-operator);
}

.tok-paren {
    color: var(--syn-bracket);
}

.tok-bracket {
    color: var(--syn-bracket);
}

.tok-brace {
    color: var(--syn-brace);
}

.tok-punctuation {
    color: var(--syn-punctuation);
}

.tok-error {
    color: var(--error-color);
}

.tok-inline-marker {
    color: var(--success-color);
    font-weight: bold;
}

/* Details Panel */
.details-panel {
    width: var(--details-width);
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    padding: 12px;
    overflow-y: auto;
}

.details-header {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.detail-group {
    margin-bottom: 16px;
}

.detail-group label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.detail-group select,
.detail-group input[type="number"] {
    width: 100%;
    padding: 6px 8px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 13px;
}

.detail-group .number-with-buttons {
    display: flex;
    align-items: center;
    gap: 4px;
}

.detail-group .number-with-buttons input[type="number"] {
    flex: 1;
    -moz-appearance: textfield;
}

.detail-group .number-with-buttons input[type="number"]::-webkit-inner-spin-button,
.detail-group .number-with-buttons input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.detail-group .number-with-buttons button {
    width: 28px;
    height: 28px;
    padding: 0;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-group .number-with-buttons button:hover {
    background-color: var(--bg-hover);
}

.detail-group select:focus,
.detail-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.detail-group.checkbox {
    display: flex;
    align-items: center;
}

.detail-group.checkbox label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0;
    cursor: pointer;
}

.detail-group.checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.details-actions {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.details-actions button {
    width: 100%;
}

.no-record {
    color: var(--text-muted);
    font-size: 13px;
    text-align: center;
    padding: 20px;
}

/* Status Bar */
.status-bar {
    min-height: var(--status-height);
    padding: 4px 16px;
    display: flex;
    align-items: center;
    background-color: var(--accent-primary);
    color: white;
    font-size: 12px;
    flex-wrap: wrap;
}

.status-bar.error {
    background-color: var(--error-color);
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-hover);
    border-radius: 5px;
}

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

/* Mobile: Hamburger button (hidden by default) */
.hamburger-btn {
    display: none;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--text-primary);
    font-size: 20px;
    padding: 8px;
    margin-right: 8px;
}

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

/* Mobile: Settings button (hidden by default) */
.settings-btn {
    display: none;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--text-secondary);
    font-size: 18px;
    padding: 8px;
}

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

/* Mobile: Sidebar overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    top: var(--header-height);
    background: var(--overlay-bg);
    z-index: 99;
}

.sidebar-overlay.visible {
    display: block;
}

/* Mobile: Settings modal */
.settings-modal {
    position: fixed;
    inset: 0;
    background: var(--overlay-bg);
    z-index: 200;
    display: none;
    justify-content: center;
    align-items: center;
}

.settings-modal.visible {
    display: flex;
}

.settings-modal-content {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: 8px;
    max-width: 90%;
    width: 280px;
    max-height: 80vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
}

.settings-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.settings-modal-header h3 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    margin: 0;
}

.settings-modal-close {
    background: transparent;
    color: var(--text-secondary);
    font-size: 20px;
    padding: 4px 8px;
    line-height: 1;
}

.settings-modal-close:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.settings-modal-divider {
    height: 1px;
    background: var(--border-color);
    margin: 16px 0;
}

.settings-modal-footer {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.settings-modal-footer button {
    width: 100%;
    padding: 12px;
    font-size: 16px;
}

/* Responsive */
@media (max-width: 900px) {
    .details-panel {
        display: none;
    }

    .settings-btn {
        display: flex;
    }

    .app-header button {
        min-width: 36px;
        min-height: 36px;
        padding: 6px 8px;
        font-size: 16px;
    }
}

@media (max-width: 768px) {
    .app-header .hamburger-btn {
        font-size: 20px;
    }

    .app-title {
        margin-right: 12px;
    }

    /* Hide subtitle on small screens */
    .app-subtitle {
        display: none;
    }

    /* Slide-out sidebar drawer */
    .sidebar {
        position: fixed;
        left: -220px;
        top: var(--header-height);
        height: calc(100vh - var(--header-height));
        height: calc(100dvh - var(--header-height)); /* Dynamic viewport height */
        z-index: 100;
        transition: left 0.3s ease;
        width: var(--sidebar-width);
    }

    .sidebar.open {
        left: 0;
    }

    /* Show hamburger button */
    .hamburger-btn {
        display: flex;
    }

    /* Adjust header spacing */
    .header-center {
        gap: 8px;
    }

    .header-right {
        gap: 4px;
    }

    /* Keep header fixed at top on mobile */
    .app-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 100;
    }

    /* Add padding to account for fixed header */
    .app-container {
        padding-top: var(--header-height);
    }
}

@media (max-width: 480px) {
    /* Smaller line numbers */
    .line-numbers {
        width: 35px;
    }

    .line-number {
        padding: 0 6px 0 4px;
    }

    .header-left {
        gap: 4px;
    }

    /* Shrink header controls */
    .app-header {
        padding: 0 8px;
    }

    .header-center {
        gap: 4px;
    }

    .header-right {
        gap: 2px;
    }

    #btn-theme {
        display: none;
    }

    .sidebar-actions-row.sidebar-theme-row {
        display: flex;
    }
}

@media (max-width: 410px) {
    .app-title {
        font-size: 16px;
        margin-right: 10px;
    }

    .app-header button {
        min-width: 30px;
        padding: 6px 4px;
        font-size: 14px;
    }

    #btn-undo, #btn-redo {
        font-size: 16px;
    }
}

/* Split Editor Layout */
.editor-split-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
}

.formulas-panel {
    flex: 1;
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.panel-divider {
    height: 9px;
    background: var(--bg-tertiary);
    cursor: row-resize;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.15s;
    flex-shrink: 0;
}

.panel-divider:hover,
.panel-divider.dragging {
    background: var(--accent-primary);
}

/* Larger touch target for panel divider on mobile */
@media (max-width: 768px) {
    .panel-divider {
        height: 16px;
        position: relative;
    }

    /* Extended touch area using pseudo-element */
    .panel-divider::before {
        content: '';
        position: absolute;
        left: 0;
        right: 0;
        top: -15px;
        bottom: -15px;
    }
}

/* Force cursor during panel resize */
body.panel-resizing,
body.panel-resizing * {
    cursor: row-resize !important;
}

.variables-panel {
    height: 50%;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}

.formulas-header {
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    background: var(--bg-tertiary);
    flex-shrink: 0;
}

.variables-header {
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    background: var(--bg-tertiary);
    flex-shrink: 0;
}

.variables-table {
    padding: 4px 8px;
    flex: 1;
    min-height: 0;
    overflow: auto;
}

.variable-row {
    display: flex;
    align-items: center;
    padding: 4px 8px;
    gap: 8px;
    border-radius: 3px;
    min-height: 35px;
    white-space: nowrap;
}

.variable-row:hover {
    background: var(--bg-hover);
}

.variable-name {
    min-width: 100px;
    font-family: var(--font-mono);
    font-size: 15px;
    color: var(--success-color);
    flex-shrink: 0;
}

.variable-row[data-type="output"] .variable-name {
    color: var(--accent-primary);
}

.variable-row[data-type="reference"] .variable-name {
    color: var(--text-primary);
}

.variable-row.has-error .variable-name {
    color: var(--error-color);
}

.variable-section-separator {
    padding: 8px 12px;
    color: var(--text-primary);
    font-style: italic;
    font-size: 13px;
    border-top: 1px solid var(--border-color);
    margin-top: 4px;
}

.variable-value-input {
    flex: 1;
    max-width: 200px;
    padding: 4px 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 15px;
    line-height: 1.4;
    min-height: 27px;
    box-sizing: border-box;
}

.variable-value-input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.variable-value-readonly {
    flex: 1;
    max-width: 200px;
    padding: 0 8px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 15px;
    line-height: 27px;
}

.variable-comment {
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 15px;
    font-style: italic;
    padding-left: 8px;
    line-height: 27px;
    flex-shrink: 0;
}

.variable-row[data-type="label"] {
    min-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    white-space: normal;
}

.variable-row[data-type="label"] .variable-comment {
    line-height: 1.4;
    padding-left: 4px;
    flex-shrink: 1;
    white-space: normal;
    word-wrap: break-word;
    color: var(--syn-variable);
}

.variable-row[data-type="label"].variable-label-spacer {
    height: 6px;
}

.variable-row[data-type="label"]:hover {
    background: transparent;
}

.variable-solve-btn {
    background: transparent;
    border: none;
    color: var(--success-color);
    cursor: pointer;
    font-size: 16px;
    padding: 2px 4px;
    margin-right: 2px;
    border-radius: 4px;
    opacity: 0.6;
    transition: opacity 0.15s, background 0.15s;
    width: 20px;
    flex-shrink: 0;
}

.variable-solve-btn-placeholder {
    width: 20px;
    flex-shrink: 0;
    padding: 2px 4px;
    margin-right: 2px;
}

.variable-solve-btn:hover {
    opacity: 1;
    background: var(--bg-tertiary);
}

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

@keyframes variable-flash {
    from { background-color: rgba(0, 122, 204, 0.3); }
    to { background-color: transparent; }
}

.variable-row.value-changed {
    animation: variable-flash 1.5s ease-out;
}

/* Print styles */
@media print {
    .app-header,
    .sidebar,
    .details-panel,
    .status-bar,
    .tab-bar {
        display: none !important;
    }

    .main-content {
        display: block;
    }

    .editor-container {
        position: static;
        overflow: visible;
    }

    .simple-editor {
        display: block;
    }

    .editor-textarea {
        position: static;
        color: black;
        background: white;
    }
}