:root {
    --color-bg: #ffffff;
    --color-text: #000000;
    --color-border: #000000;
    --color-accent: #333333;
    --color-hover: #f5f5f5;
    --color-muted: #5c5c5c;
    --spacing-sm: 8px;
    --spacing-md: 14px;
    --spacing-lg: 24px;
    --spacing-xl: 40px;
    --border-radius: 0px;
    --transition: all 0.2s ease;
}

[data-theme='dark'] {
    --color-bg: #111111;
    --color-text: #f5f5f5;
    --color-border: #f5f5f5;
    --color-accent: #e0e0e0;
    --color-hover: #222222;
    --color-muted: #c7c7c7;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Courier New', monospace;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.65;
}

.container {
    width: min(1200px, 100%);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-xl);
}

header {
    border: 2px solid var(--color-border);
    padding: var(--spacing-lg);
    background: var(--color-bg);
    box-shadow: 6px 6px 0 0 var(--color-border);
    margin-bottom: var(--spacing-lg);
}

header h1 {
    margin: 0 0 var(--spacing-md);
    font-size: clamp(1.1rem, 3.8vw, 1.6rem);
}

.menu {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.menu-btn {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    color: var(--color-text);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-weight: bold;
}

.menu-btn.active {
    background: var(--color-hover);
}

.theme-toggle {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    color: var(--color-text);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    margin-left: auto;
}

.theme-toggle:hover {
    background: var(--color-hover);
}

.panel {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: 6px 6px 0 0 var(--color-border);
}

.code-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.input-section,
.output-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

label {
    color: var(--color-muted);
    font-size: 0.9rem;
    font-weight: bold;
}

textarea {
    width: 100%;
    min-height: clamp(160px, 28vh, 220px);
    resize: vertical;
    background: var(--color-bg);
    color: var(--color-text);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm);
    font-family: Consolas, monospace;
    font-size: 0.9rem;
}

.execute-btn {
    align-self: flex-start;
    border: 2px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

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

.analysis-tables {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.table-container h4 {
    margin: 0 0 8px;
}

.table-accordion {
    border: 0;
}

.table-accordion > summary {
    list-style: none;
    cursor: pointer;
    border: 2px solid var(--color-border);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg);
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
}

.table-accordion > summary::-webkit-details-marker {
    display: none;
}

.table-accordion > summary::after {
    content: '+';
    float: right;
}

.table-accordion[open] > summary::after {
    content: '−';
}

.table-content {
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    background: var(--color-bg);
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 780px;
}

th,
td {
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm);
    text-align: left;
    font-size: 0.85rem;
}

th {
    background: var(--color-hover);
    color: var(--color-text);
    position: sticky;
    top: 0;
}

.no-data {
    padding: var(--spacing-sm);
    color: var(--color-muted);
}

.no-data.hidden {
    display: none;
}

footer {
    margin-top: var(--spacing-md);
    color: var(--color-muted);
    font-size: 0.9rem;
}

@media (max-width: 900px) {
    .container {
        padding: var(--spacing-md);
    }

    .panel {
        padding: var(--spacing-md);
    }

    .code-container {
        grid-template-columns: 1fr;
    }

    table {
        min-width: 0;
    }
}

@media (max-width: 700px) {
    header {
        padding: var(--spacing-md);
        box-shadow: 4px 4px 0 0 var(--color-border);
    }

    .menu {
        flex-wrap: wrap;
    }

    .theme-toggle {
        margin-left: 0;
    }

    .execute-btn {
        width: 100%;
        text-align: center;
    }

    .analysis-tables {
        gap: 12px;
    }
}

@media (max-width: 768px) {
    .table-container h4 {
        display: none;
    }

    .table-accordion > summary {
        margin-bottom: 0;
    }

    .table-accordion:not([open]) .table-content {
        display: none;
    }

    .table-accordion[open] .table-content {
        overflow: visible;
        border: none;
        background: transparent;
        padding-top: var(--spacing-sm);
    }

    table,
    thead,
    tbody,
    tr,
    td {
        display: block;
        width: 100%;
    }

    thead {
        display: none;
    }

    table {
        min-width: 0;
        border-collapse: separate;
        border-spacing: 0;
    }

    tbody tr {
        border: 2px solid var(--color-border);
        margin-bottom: var(--spacing-sm);
        background: var(--color-bg);
    }

    tbody td {
        border: none;
        border-bottom: 1px dashed var(--color-border);
        display: flex;
        justify-content: space-between;
        gap: var(--spacing-sm);
        align-items: flex-start;
        text-align: right;
        overflow-wrap: anywhere;
        word-break: break-word;
    }

    tbody td:last-child {
        border-bottom: none;
    }

    tbody td::before {
        content: attr(data-label);
        color: var(--color-muted);
        font-weight: bold;
        text-align: left;
        flex: 0 0 42%;
        max-width: 42%;
    }
}

@media (min-width: 769px) {
    .table-container h4 {
        display: block;
    }

    .table-accordion > summary {
        display: none;
    }

    .table-accordion .table-content {
        display: block;
    }
}

@media (max-width: 520px) {
    .container {
        padding: var(--spacing-sm);
    }

    header,
    .panel {
        box-shadow: 3px 3px 0 0 var(--color-border);
    }

    .panel {
        padding: var(--spacing-sm);
    }

    label,
    footer {
        font-size: 0.82rem;
    }

    textarea {
        min-height: 140px;
        font-size: 0.84rem;
    }

    th,
    td {
        font-size: 0.78rem;
        padding: 6px;
    }

    tbody td {
        font-size: 0.76rem;
        padding: 6px;
    }

    tbody td::before {
        flex: 0 0 44%;
        max-width: 44%;
        font-size: 0.74rem;
    }
}