/* Code Runner Panel - Interactive Code Execution Styles */

/* CSS Custom Properties */
:root {
    /* Primary palette */
    --code-runner-primary: #388e3c;
    --code-runner-primary-mid: #2e7d32;
    --code-runner-primary-dark: #1b5e20;
    --code-runner-primary-darker: #0d3d0f;
    --code-runner-primary-shadow: rgba(56, 142, 60, 0.3);
    --code-runner-primary-shadow-strong: rgba(56, 142, 60, 0.4);

    /* Gradients */
    --code-runner-gradient: linear-gradient(135deg, var(--code-runner-primary) 0%, var(--code-runner-primary-mid) 50%, var(--code-runner-primary-dark) 100%);
    --code-runner-gradient-hover: linear-gradient(135deg, var(--code-runner-primary-mid) 0%, var(--code-runner-primary-dark) 50%, var(--code-runner-primary-darker) 100%);

    /* Surface & text */
    --code-runner-surface: #ffffff;
    --code-runner-surface-alt: #fafafa;
    --code-runner-surface-alt2: #f5f5f5;
    --code-runner-surface-header: #f8f9fa;
    --code-runner-surface-header-end: #f1f3f4;
    --code-runner-text: rgba(0, 0, 0, 0.87);
    --code-runner-text-secondary: rgba(0, 0, 0, 0.6);
    --code-runner-text-tertiary: rgba(0, 0, 0, 0.54);
    --code-runner-border: rgba(0, 0, 0, 0.08);
    --code-runner-border-light: rgba(0, 0, 0, 0.06);
    --code-runner-hover-bg: rgba(0, 0, 0, 0.04);
    --code-runner-hover-bg-strong: rgba(0, 0, 0, 0.08);

    /* Console / output */
    --code-runner-console-bg: #1e1e1e;
    --code-runner-console-header-bg: #252526;
    --code-runner-console-border: #333333;
    --code-runner-console-text: #d4d4d4;
    --code-runner-console-text-secondary: rgba(255, 255, 255, 0.7);
    --code-runner-console-text-tertiary: rgba(255, 255, 255, 0.5);
    --code-runner-console-scroll-thumb: rgba(255, 255, 255, 0.15);
    --code-runner-console-scroll-thumb-hover: rgba(255, 255, 255, 0.25);

    /* Error */
    --code-runner-error-color: #f44336;
    --code-runner-error-dark: #d32f2f;
    --code-runner-error-darker: #c62828;
    --code-runner-error-bg-start: #ffebee;
    --code-runner-error-bg-end: #ffcdd2;
    --code-runner-error-output: #f48771;
    --code-runner-error-close-hover-bg: rgba(244, 67, 54, 0.08);

    /* Focus */
    --code-runner-focus-ring: rgba(56, 142, 60, 0.3);
    --code-runner-focus-ring-light: rgba(255, 255, 255, 0.3);

    /* Layout */
    --code-runner-panel-width: 600px;

    /* Z-index layers — relative to site overlay layer */
    --code-runner-z-overlay: 1100;
    --code-runner-z-panel: 1101;

    /* Easing */
    --code-runner-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Box-sizing scope */
.code-runner-panel *,
.code-runner-panel *::before,
.code-runner-panel *::after {
    box-sizing: border-box;
}

/* Run button (inline, placed next to listings) */
.code-runner-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 14px;
    margin-inline-start: 8px;
    background: var(--code-runner-gradient);
    color: white;
    border: none;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 200ms var(--code-runner-ease);
    flex-shrink: 0;
    box-shadow: 0 1px 3px var(--code-runner-primary-shadow);
    position: relative;
    overflow: hidden;
}

.code-runner-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.code-runner-btn:hover::before {
    left: 100%;
}

.code-runner-btn:hover {
    background: var(--code-runner-gradient-hover);
    box-shadow: 0 3px 8px var(--code-runner-primary-shadow-strong);
}

.code-runner-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px var(--code-runner-primary-shadow);
}

.code-runner-btn:focus-visible {
    outline: 3px solid var(--code-runner-focus-ring);
    outline-offset: 2px;
}

.code-runner-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.code-runner-btn i {
    font-size: 15px;
}

/* Slide-out panel overlay */
.code-runner-overlay {
    position: fixed;
    inset: 0;
    /* Opaque fallback for browsers without backdrop-filter support */
    background: rgba(0, 0, 0, 0.6);
    z-index: var(--code-runner-z-overlay);
    opacity: 0;
    visibility: hidden;
    /* visibility uses a step delay: hide after fade-out completes */
    transition: opacity 250ms var(--code-runner-ease),
                visibility 0s linear 250ms;
}

@supports (backdrop-filter: blur(4px)) or (-webkit-backdrop-filter: blur(4px)) {
    .code-runner-overlay {
        background: rgba(0, 0, 0, 0.4);
        -webkit-backdrop-filter: blur(4px);
        backdrop-filter: blur(4px);
    }
}

.code-runner-overlay.active {
    opacity: 1;
    visibility: visible;
    /* visibility flips immediately on show (0s delay) */
    transition: opacity 250ms var(--code-runner-ease),
                visibility 0s linear 0s;
}

/* Slide-out panel */
.code-runner-panel {
    position: fixed;
    top: 0;
    inset-inline-end: 0;
    bottom: 0;
    width: var(--code-runner-panel-width);
    max-width: 100vw;
    background: var(--code-runner-surface);
    box-shadow:
        -8px 0 30px rgba(0, 0, 0, 0.12),
        -2px 0 8px rgba(0, 0, 0, 0.08);
    z-index: var(--code-runner-z-panel);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 350ms var(--code-runner-ease);
    border-radius: 16px 0 0 16px;
    overflow: hidden;
    will-change: transform;
    contain: layout style;
}

.code-runner-overlay.active .code-runner-panel {
    transform: translateX(0);
}

/* Panel header — light gradient, matches chat */
.code-runner-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: 20px;
    padding-inline: 24px;
    background: linear-gradient(135deg, var(--code-runner-surface-header) 0%, var(--code-runner-surface-header-end) 100%);
    border-bottom: 1px solid var(--code-runner-border);
    flex-shrink: 0;
    position: relative;
}

.code-runner-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    inset-inline: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(56, 142, 60, 0.25) 50%, transparent 100%);
}

.code-runner-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--code-runner-text);
    letter-spacing: 0.15px;
}

.code-runner-title i {
    font-size: 22px;
    color: var(--code-runner-primary);
}

.code-runner-close-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--code-runner-hover-bg);
    border: none;
    border-radius: 50%;
    color: var(--code-runner-text-tertiary);
    cursor: pointer;
    transition: all 200ms var(--code-runner-ease);
}

.code-runner-close-btn:hover {
    background: var(--code-runner-error-close-hover-bg);
    color: var(--code-runner-error-color);
    transform: rotate(90deg);
}

.code-runner-close-btn:focus-visible {
    outline: 3px solid var(--code-runner-focus-ring);
    outline-offset: 2px;
}

.code-runner-close-btn i {
    font-size: 20px;
}

/* Editor container — top 60% of panel */
.code-runner-editor-container {
    /* 6 : 4 ratio with output container (60% / 40%) */
    flex: 6;
    min-height: 0;
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid var(--code-runner-border);
    position: relative;
}

.code-runner-editor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: 10px;
    padding-inline: 20px;
    background: linear-gradient(135deg, var(--code-runner-surface-alt) 0%, var(--code-runner-surface-alt2) 100%);
    border-bottom: 1px solid var(--code-runner-border-light);
}

.code-runner-editor-header h4 {
    margin: 0;
    font-size: 13px;
    font-weight: 500;
    color: var(--code-runner-text-secondary);
    letter-spacing: 0.4px;
    text-transform: uppercase;
}

.code-runner-buttons {
    display: flex;
    gap: 8px;
}

.code-runner-run-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 20px;
    background: var(--code-runner-gradient);
    color: white;
    border: none;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 200ms var(--code-runner-ease);
    box-shadow: 0 2px 6px var(--code-runner-primary-shadow);
    position: relative;
    overflow: hidden;
}

.code-runner-run-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.code-runner-run-btn:hover::before {
    left: 100%;
}

.code-runner-run-btn:hover {
    background: var(--code-runner-gradient-hover);
    box-shadow: 0 4px 12px var(--code-runner-primary-shadow-strong);
    transform: translateY(-1px);
}

.code-runner-run-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px var(--code-runner-primary-shadow);
}

.code-runner-run-btn:focus-visible {
    outline: 3px solid var(--code-runner-focus-ring);
    outline-offset: 2px;
}

.code-runner-run-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.code-runner-clear-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 7px 14px;
    background: var(--code-runner-hover-bg);
    color: var(--code-runner-text-secondary);
    border: none;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 200ms var(--code-runner-ease);
}

.code-runner-clear-btn:hover {
    background: var(--code-runner-hover-bg-strong);
    color: var(--code-runner-text);
}

.code-runner-clear-btn:focus-visible {
    outline: 3px solid var(--code-runner-focus-ring);
    outline-offset: 2px;
}

/* Monaco editor iframe */
.code-runner-editor {
    flex: 1;
    width: 100%;
    min-height: 0;
    border: none;
    display: block;
}

/* Loading state */
.code-runner-loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: var(--code-runner-text-secondary);
    background: var(--code-runner-surface);
    z-index: 10;
}

.code-runner-spinner {
    display: inline-block;
    width: 36px;
    height: 36px;
    border: 3px solid var(--code-runner-border);
    border-radius: 50%;
    border-top-color: var(--code-runner-primary);
    animation: code-runner-spin 0.8s ease-in-out infinite;
}

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

.code-runner-loading-text {
    margin-top: 16px;
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.25px;
}

/* Error state */
.code-runner-error {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: linear-gradient(135deg, var(--code-runner-error-bg-start) 0%, var(--code-runner-error-bg-end) 100%);
    text-align: center;
    z-index: 10;
}

.code-runner-error > i {
    font-size: 48px;
    margin-bottom: 16px;
    color: var(--code-runner-error-dark);
    opacity: 0.8;
}

.code-runner-error p {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
    color: var(--code-runner-error-darker);
    max-width: 320px;
}

.code-runner-retry-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    padding: 8px 22px;
    background: var(--code-runner-gradient);
    color: white;
    border: none;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 200ms var(--code-runner-ease);
    box-shadow: 0 2px 6px var(--code-runner-primary-shadow);
}

.code-runner-retry-btn:hover {
    background: var(--code-runner-gradient-hover);
    box-shadow: 0 4px 12px var(--code-runner-primary-shadow-strong);
    transform: translateY(-1px);
}

.code-runner-retry-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px var(--code-runner-primary-shadow);
}

.code-runner-retry-btn:focus-visible {
    outline: 3px solid var(--code-runner-focus-ring);
    outline-offset: 2px;
}

.code-runner-retry-btn i {
    font-size: 16px;
    color: white;
}

/* Output console — dark theme, bottom 40% of panel */
.code-runner-output-container {
    /* 4 : 6 ratio with editor container (40% / 60%) */
    flex: 4;
    min-height: 0;
    display: flex;
    flex-direction: column;
    background: var(--code-runner-console-bg);
}

.code-runner-output-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: 10px;
    padding-inline: 20px;
    background: var(--code-runner-console-header-bg);
    border-bottom: 1px solid var(--code-runner-console-border);
}

.code-runner-output-header h4 {
    margin: 0;
    font-size: 12px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* Scoped specificity: the dark console header forces white text
   without needing !important */
.code-runner-output-container .code-runner-output-header h4 {
    color: var(--code-runner-console-text-secondary);
}

.code-runner-output-header h4 i {
    font-size: 15px;
    color: var(--code-runner-console-text-tertiary);
}

.code-runner-clear-output-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    background: transparent;
    color: var(--code-runner-console-text-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    font-size: 12px;
    cursor: pointer;
    transition: all 200ms var(--code-runner-ease);
}

.code-runner-clear-output-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.8);
    border-color: var(--code-runner-focus-ring-light);
}

.code-runner-clear-output-btn:focus-visible {
    outline: 2px solid var(--code-runner-focus-ring-light);
    outline-offset: 2px;
}

.code-runner-output {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding-block: 16px;
    padding-inline: 20px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.6;
    color: var(--code-runner-console-text);
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
    /* Firefox scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--code-runner-console-scroll-thumb) transparent;
}

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

/* Chromium / Safari scrollbar */
.code-runner-output::-webkit-scrollbar {
    width: 8px;
}

.code-runner-output::-webkit-scrollbar-track {
    background: transparent;
}

.code-runner-output::-webkit-scrollbar-thumb {
    background: var(--code-runner-console-scroll-thumb);
    border-radius: 4px;
}

.code-runner-output::-webkit-scrollbar-thumb:hover {
    background: var(--code-runner-console-scroll-thumb-hover);
}

/* Responsive */
@media (max-width: 768px) {
    .code-runner-panel {
        width: 100%;
        border-radius: 0;
    }

    .code-runner-header {
        padding: 16px;
    }

    .code-runner-title {
        font-size: 15px;
    }

    .code-runner-editor-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        padding-block: 10px;
        padding-inline: 16px;
    }

    .code-runner-buttons {
        width: 100%;
        justify-content: flex-end;
    }

    .code-runner-output-header {
        padding-block: 10px;
        padding-inline: 16px;
    }

    .code-runner-output {
        padding-block: 12px;
        padding-inline: 16px;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .code-runner-panel {
        border-inline-start: 2px solid #000;
    }

    .code-runner-header {
        border-bottom: 2px solid #000;
    }

    .code-runner-run-btn {
        border: 2px solid white;
    }

    .code-runner-btn {
        border: 2px solid white;
    }

    .code-runner-clear-output-btn {
        border-color: var(--code-runner-console-text-tertiary);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .code-runner-overlay,
    .code-runner-panel,
    .code-runner-btn,
    .code-runner-run-btn,
    .code-runner-clear-btn,
    .code-runner-close-btn,
    .code-runner-clear-output-btn,
    .code-runner-retry-btn {
        transition: none;
    }

    .code-runner-btn::before,
    .code-runner-run-btn::before {
        display: none;
    }

    .code-runner-spinner {
        animation: none;
        opacity: 0.6;
    }
}

/* Print — hide everything */
@media print {
    .code-runner-overlay,
    .code-runner-btn {
        display: none;
    }
}