:root {
    --bg-light: #F8F9FA;
    --text-light: #333;
    --button-light: #007BFF;
    --highlight-light: #FFC107;

    --bg-dark: #1E1E1E;
    --text-dark: #EAEAEA;
    --button-dark: #00C8FF;
    --highlight-dark: #FF8C00;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-light);
    margin: 0;
    padding: 20px;
    transition: background 0.3s, color 0.3s;
}

body.dark-mode {
    background-color: var(--bg-dark);
    color: var(--text-dark);
}

.container {
    padding: 20px;
    text-align: center;
    display: grid;
    grid-template-columns: 25em 1fr;
    gap: 1rem;
    align-items: start;
}

.filter-section {
    position: sticky;
    top: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    min-width: 25em;
    max-width: 25em;
    margin-left: auto;
    margin-right: auto;
}

.filter-section button {
    margin-top: 1.5em;
}

.filter-section label {
    text-align: left;
    margin: auto 0 auto 0;
    grid-column: 1 / 2;
}

.filter-section div.slider {
    padding: 1.5em;
    grid-column: 2 / 5;
}

input[type="number"],
select {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 5px;
    text-align: right;
}

button {
    background-color: var(--button-light);
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

button:hover {
    background-color: var(--highlight-light);
}

button:disabled {
    pointer-events: none;
    opacity: 0.5;
}

.dark-mode-toggle {
    margin-top: 20px;
    cursor: pointer;
    font-size: 14px;
    color: var(--button-light);
}

.dark-mode-toggle:hover {
    color: var(--highlight-light);
}

/* Preview */
.word-list {
    border-collapse: collapse;
    border-radius: 5px;
}

.word-list th,
.word-list td {
    padding: 0.2rem;
    border: 1px solid #ccc;
}

.word-list th {
    font-weight: bold;
    color: var(--text-light);
}

.filter-section #sizeWarning {
    grid-column: 1 / 4;
    margin-top: 0;
    font-style: italic;
}

body.dark-mode .word-list th {
    color: var(--text-dark);
}

span.icon {
    font-style: normal !important;
}

.word-list:empty::before {
    content: "No words available";
    display: block;
    text-align: center;
    padding: 10px;
    color: #666;
    font-style: italic;
}

@media (max-width: 55em) {
    .container {
        grid-template-columns: 1fr;
    }
}

.word-list td.score-column {
    display: table-cell;
}

.word-list td.hidden {
    display: none;
}

td.zero {
    color: #999;
}

tr.scores:hover {
    background-color: #f0f0f0;
}

.noUi-handle {
    background-color: var(--button-light) !important;
    cursor: pointer;
}

.noUi-handle-upper,
.noUi-handle-lower {
    border: none !important;
    box-shadow: none !important;
}

.noUi-handle-upper:hover,
.noUi-handle-lower:hover {
    background-color: var(--highlight-light) !important;
}

.noUi-base {
    background-color: #d0d0d0 !important;
}

.noUi-connect {
    background-color: #ffffff !important;
}