/* Theme & Variables - Royal Purple */
:root {
    --bg-base: #1A0D2E;
    /* Deep Purple Background */
    --bg-panel: #241442;
    --bg-input: #120921;

    --primary: #6C5CE7;
    /* Royal Purple */
    --primary-hover: #8071f0;
    --primary-dim: rgba(108, 92, 231, 0.15);

    --secondary: #A29BFE;
    --accent: #FD79A8;

    --success: #00E676;
    --error: #FF5252;

    --text-main: #F3F0FA;
    --text-muted: #8E84B1;

    --border: rgba(162, 155, 254, 0.15);
    --border-light: rgba(162, 155, 254, 0.3);

    /* Syntax Highlighting Colors */
    --syn-key: #A29BFE;
    --syn-string: #55EFC4;
    --syn-number: #FAB1A0;
    --syn-boolean: #FD79A8;
    --syn-comment: #636E72;
    --syn-section: #74B9FF;
    --syn-punctuation: #8E84B1;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;

    --font-ui: 'Inter', system-ui, sans-serif;
    --font-mono: 'Fira Code', monospace;

    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

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

body {
    background-color: var(--bg-base);
    color: var(--text-main);
    font-family: var(--font-ui);
    line-height: 1.5;
    height: 100vh;
    overflow: hidden;
}

/* Utilities */
.hidden {
    display: none !important;
}

.icon {
    vertical-align: middle;
}

/* Layout */
.app-layout {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(36, 20, 66, 0.7);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

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

.logo-box {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.2rem;
    color: #FFF;
    box-shadow: 0 0 15px var(--primary-dim);
}

.brand h1 {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

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

.divider {
    width: 1px;
    height: 24px;
    background: var(--border);
    margin: 0 0.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-ui);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--primary);
    color: #FFF;
    box-shadow: 0 4px 12px rgba(108, 92, 231, 0.2);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-input);
    color: var(--text-main);
    border-color: var(--border);
}

.btn-secondary:hover {
    background: rgba(162, 155, 254, 0.1);
    border-color: var(--border-light);
}

.btn-icon {
    background: transparent;
    color: var(--text-muted);
    padding: 0.5rem;
}

.btn-icon span {
    display: none;
}

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

@media (min-width: 768px) {
    .btn-icon span {
        display: inline;
    }
}

/* Workspace Grid */
.workspace {
    display: grid;
    grid-template-columns: 1fr 1fr;
    flex: 1;
    overflow: hidden;
}

.pane {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.editor-pane {
    border-right: 1px solid var(--border);
    background: var(--bg-input);
    position: relative;
}

.inspector-pane {
    background: var(--bg-panel);
}

/* Pane Headers (Tabs) */
.pane-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    height: 48px;
    flex-shrink: 0;
}

.tabs {
    display: flex;
    height: 100%;
}

.tab {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    cursor: pointer;
    position: relative;
    transition: color 0.2s;
}

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

.tab.active {
    color: var(--secondary);
    font-weight: 500;
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}

.status-badge {
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.success {
    background: rgba(0, 230, 118, 0.1);
    color: var(--success);
}

.status-badge.error {
    background: rgba(255, 82, 82, 0.1);
    color: var(--error);
}

/* Editor Syntax Area */
.editor-container {
    flex: 1;
    position: relative;
    overflow: auto;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    line-height: 1.6;
}

#code-input,
#code-highlight {
    margin: 0;
    padding: 1.5rem;
    border: 0;
    width: 100%;
    height: 100%;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    white-space: pre;
    overflow-wrap: normal;
    background: transparent;
}

#code-input {
    position: absolute;
    top: 0;
    left: 0;
    color: transparent;
    /* Text is transparent, caret is visible */
    caret-color: var(--text-main);
    z-index: 2;
    resize: none;
    outline: none;
}

#code-highlight {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    color: var(--text-main);
    pointer-events: none;
}

.error-panel {
    background: rgba(255, 82, 82, 0.1);
    border-top: 1px solid rgba(255, 82, 82, 0.3);
    padding: 0.75rem 1.5rem;
    color: var(--error);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.error-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

/* Formatter Tokens */
.tk-key {
    color: var(--syn-key);
}

.tk-str {
    color: var(--syn-string);
}

.tk-num {
    color: var(--syn-number);
}

.tk-bool {
    color: var(--syn-boolean);
    font-weight: 600;
}

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

.tk-sec {
    color: var(--syn-section);
    font-weight: 600;
}

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

/* Inspector Views */
.inspector-content {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.output-view {
    height: 100%;
    overflow: auto;
    display: none;
}

.output-view.active {
    display: block;
}

.compiled-code {
    margin: 0;
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--secondary);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    text-align: center;
    padding: 2rem;
}

.empty-state svg {
    margin-bottom: 1rem;
}

/* Visual Tree Nodes */
.tree-container {
    padding: 1.5rem;
    font-family: var(--font-ui);
    font-size: 0.9rem;
}

.tree-node {
    margin-bottom: 2px;
}

.tree-node-header {
    display: flex;
    align-items: center;
    padding: 0.4rem 0.5rem;
    border-radius: 4px;
}

.tree-node-header:hover {
    background: rgba(255, 255, 255, 0.05);
}

.tree-indent {
    width: 1.5rem;
    display: inline-block;
}

.node-type {
    font-size: 0.7rem;
    font-family: var(--font-mono);
    padding: 0.1rem 0.3rem;
    border-radius: 3px;
    margin-right: 0.5rem;
    background: var(--bg-input);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.type-section {
    color: var(--syn-section);
    border-color: rgba(116, 185, 255, 0.3);
}

.type-array {
    color: var(--accent);
    border-color: rgba(253, 121, 168, 0.3);
}

.type-string {
    color: var(--syn-string);
}

.type-number {
    color: var(--syn-number);
}

.type-boolean {
    color: var(--success);
}

.type-date {
    color: #ffeaa7;
}

.node-key {
    font-weight: 500;
    color: var(--secondary);
    margin-right: 0.5rem;
}

.node-val {
    font-family: var(--font-mono);
    color: var(--text-main);
    word-break: break-all;
}

.node-string {
    color: var(--syn-string);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #FFF;
    padding: 0.6rem 1.25rem;
    border-radius: 20px;
    font-weight: 500;
    box-shadow: var(--shadow);
    transition: opacity 0.3s;
    z-index: 100;
}

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

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

::-webkit-scrollbar-thumb {
    background: rgba(162, 155, 254, 0.2);
    border-radius: 5px;
    border: 2px solid var(--bg-base);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(162, 155, 254, 0.4);
}

@media (max-width: 800px) {
    .workspace {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
    }

    .editor-pane {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
}