:root {
    --font-size-base: 16px;
    --sample-font-size: 16px;
    --c-bg: #1a1a1a;
    --c-text: #ccc;
    --c-header-bg: #222;
    --c-item-bg: #2e2e2e;
    --c-item-bg-hover: #3a3a3a;
    --c-border: #666;
    --c-control-bg: #3a3a3a;
    --c-control-bg-active: #5c5c5c;
    --c-unavailable: #df7a7a;
    --c-link: #64b5f6;
    --c-websafe: #4caf50;
    --c-accent: #3cdda4;
}

html.light-theme {
    --c-bg: #f4f4f4;
    --c-text: #333;
    --c-header-bg: #e0e0e0;
    --c-item-bg: #ffffff;
    --c-item-bg-hover: #f0f0f0;
    --c-border: #ccc;
    --c-control-bg: #e0e0e0;
    --c-control-bg-active: #c7c7c7;
    --c-unavailable: #d93030;
    --c-link: #0d47a1;
    --c-websafe: #388e3c;
}
html.light-theme h1 {
    color: #2da880;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--c-bg);
    color: var(--c-text);
    font-family: "Source Code Pro", Consolas, "Courier New", Courier, monospace;
    font-size: var(--font-size-base);
    margin: 20px auto 40px;
    width: 1400px;
    max-width: 95%;
    transition: background 0.6s ease, color 0.6s ease;
}

h1 {
    font-size: 36px;
    text-align: center;
    color: var(--c-accent);
}

h2 {
    margin-top: 30px;
    border-bottom: 1px solid var(--c-border);
    padding-bottom: 5px;
}

.controls-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 25px;
}

.controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.switch-field {
    display: flex;
    background-color: var(--c-control-bg);
    border-radius: 15px;
    padding: 3px;
}

.switch-field input {
    position: absolute;
    opacity: 0;
}

.switch-field label {
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 12px;
    transition: background-color 0.2s ease, color 0.2s ease;
    color: var(--c-text);
    font-size: 14px;
}

.switch-field input:not(:checked) + label:hover {
    background-color: var(--c-control-bg-active);
}

.switch-field input:checked + label {
    background-color: var(--c-accent);
    color: #1a1a1a;
    font-weight: bold;
}

.switch-field input:checked + label:hover {
    background-color: #35c494;
}

select,
input[type="search"],
input[type="text"] {
    background-color: var(--c-control-bg);
    color: var(--c-text);
    border: 1px solid var(--c-border);
    border-radius: 5px;
    padding: 8px;
    font-family: inherit;
    font-size: 14px;
}

button {
    background-color: var(--c-accent);
    color: #1a1a1a;
    font-weight: bold;
    border: none;
    border-radius: 5px;
    padding: 8px 12px;
    font-family: inherit;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

button:hover {
    background-color: #35c494;
}

button:disabled {
    background-color: var(--c-control-bg);
    color: var(--c-text);
    opacity: 0.5;
    cursor: not-allowed;
}

#custom-text-input {
    width: 300px;
}

.font-item-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.font-display-item {
    background: var(--c-item-bg);
    font-size: var(--sample-font-size);
}

.list-view .font-display-item {
    margin-bottom: 15px;
    padding: 8px 12px;
    border-radius: 4px;
    flex-grow: 1;
}

.list-view .font-name {
    background-color: var(--c-header-bg);
    display: inline-block;
    margin-right: 10px;
    padding: 4px 8px;
    width: 260px;
    border-radius: 3px;
    font-size: var(--sample-font-size);
    vertical-align: middle;
}

.table-view {
    text-align: center;
}

.font-comparison-table {
    margin: 0 auto;
    border-collapse: collapse;
    margin-bottom: 20px;
    width: 100%;
}

.font-comparison-table th,
.font-comparison-table td {
    background-color: var(--c-item-bg);
    border: 1px solid var(--c-border);
    padding: 6px 12px;
    text-align: left;
    vertical-align: top;
}

.font-comparison-table th {
    background-color: var(--c-header-bg);
    font-size: 20px;
    font-weight: bold;
}

.font-comparison-table .font-display-item {
    display: block;
    padding: 5px;
}

.font-item-wrapper.font-unavailable .font-display-item {
    color: var(--c-unavailable) !important;
    font-family: "Source Code Pro", Consolas, "Courier New", Courier, monospace !important;
}

.web-safe-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--c-websafe);
    display: inline-block;
    margin-left: 8px;
    vertical-align: middle;
    flex-shrink: 0;
}

.compare-checkbox {
    accent-color: var(--c-accent);
    margin-right: 5px;
    flex-shrink: 0;
}

#back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--c-accent);
    color: #1a1a1a;
    border: none;
    border-radius: 5px;
    padding: 10px 15px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    font-size: 16px;
}

#back-to-top.show {
    opacity: 1;
    visibility: visible;
}