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

:root {
    /* Strict Palette from User Image */
    --color-1: #3e3e42;
    /* Lighter Grey */
    --color-2: #2d2d30;
    /* Dark Grey */
    --color-3: #252526;
    /* Panel Grey */
    --color-4: #1e1e1e;
    /* Editor Grey */
    --color-5: #000000;
    /* Black */

    --bg-primary: var(--color-5);
    --bg-secondary: var(--color-3);
    --bg-tertiary: var(--color-3);
    --bg-toolbar: var(--color-3);
    --bg-editor: var(--color-5);
    --bg-output: var(--color-5);

    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-tertiary: #888888;

    --accent-blue: #ffffff;
    --accent-blue-hover: #e5e5e5;
    --success-color: #ffffff;
    --error-color: #ffffff;

    --border-color: var(--color-2);

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Consolas', 'Monaco', monospace;

    /* Transitions */
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-toolbar: #e2e8f0;

    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;

    --border-color: rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Editor Wrapper */
.editor-wrapper {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
}

/* Top Toolbar */
.top-toolbar {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    background: var(--bg-toolbar);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 20px;
    height: 56px;
    gap: 20px;
}

.toolbar-left {
    display: flex;
    align-items: center;
}

.file-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    font-family: var(--font-mono);
}

.toolbar-center {
    display: flex;
    align-items: center;
    gap: 12px;
    justify-content: center;
}

.toolbar-right {
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.output-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Toolbar Buttons */
.toolbar-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

.toolbar-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.toolbar-btn:active {
    transform: scale(0.95);
}

/* Run Button */
.btn-run {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--accent-blue);
    color: #000000;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-sans);
    box-shadow: 0 2px 8px rgba(255, 255, 255, 0.1);
}

.btn-run:hover {
    background: var(--accent-blue-hover);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

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

/* Split View */
.split-view {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
}

/* Editor Section */
.editor-section {
    display: flex;
    flex-direction: column;
    background: var(--bg-editor);
    border-right: 1px solid var(--border-color);
    overflow: hidden;
}

.code-editor-wrapper {
    flex: 1;
    overflow: hidden;
}

.CodeMirror {
    height: 100% !important;
    font-size: 15px;
    font-family: var(--font-mono);
    line-height: 1.6;
    background: var(--bg-editor) !important;
    color: var(--text-primary) !important;
}

.CodeMirror-gutters {
    background-color: var(--bg-editor) !important;
    border-right: 1px solid var(--border-color) !important;
}

.CodeMirror-linenumber {
    color: var(--text-tertiary) !important;
    background: transparent !important;
}

.CodeMirror-cursor {
    border-left: 2px solid #ffffff !important;
}

.CodeMirror-activeline-background {
    background: rgba(255, 255, 255, 0.05) !important;
}

/* Output Section */
.output-section {
    display: flex;
    flex-direction: column;
    background: var(--bg-output);
    overflow: hidden;
}

.output-wrapper {
    flex: 1;
    overflow: auto;
    padding: 20px;
    position: relative;
}

.output-content {
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--text-primary);
}

.output-content:empty::before {
    content: '';
}

.output-content.error {
    color: var(--error-color);
}

.output-content.success {
    color: var(--success-color);
}

/* Success Message */
.success-message {
    color: var(--text-tertiary);
    font-style: italic;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

/* Output Footer */
.output-footer {
    display: flex;
    justify-content: flex-end;
    padding: 12px 20px;
    background: var(--bg-toolbar);
    border-top: 1px solid var(--border-color);
}

.btn-clear {
    padding: 6px 16px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-sans);
}

.btn-clear:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: var(--text-tertiary);
}

.btn-clear:active {
    transform: scale(0.95);
}

/* Loading Spinner */
.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--bg-toolbar);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: slideUp 0.3s ease;
    overflow: hidden;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }

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

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

.modal-header h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.modal-header h2 svg {
    color: var(--accent-blue);
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

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

.shortcuts-grid {
    display: grid;
    gap: 24px;
}

.shortcut-group h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.shortcut-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 8px;
}

.shortcut-item kbd {
    display: inline-block;
    padding: 4px 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
}

.shortcut-item span {
    color: var(--text-secondary);
    font-size: 14px;
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .split-view {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
    }

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

    .top-toolbar {
        grid-template-columns: auto 1fr auto;
    }

    .toolbar-center {
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    .top-toolbar {
        padding: 10px 16px;
        height: auto;
        gap: 12px;
    }

    .toolbar-btn {
        width: 32px;
        height: 32px;
    }

    .btn-run span {
        display: none;
    }

    .btn-run {
        padding: 8px 12px;
    }

    .output-wrapper {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    .file-name {
        font-size: 12px;
    }

    .output-label {
        font-size: 12px;
    }

    .CodeMirror {
        font-size: 13px;
    }

    .output-content {
        font-size: 13px;
    }
}