@manufosela/slider-underline

Range slider web component with underline track style

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Slider Underline

Range slider with underline track style and value display.

← Back to components GitHub Repo Playground npm

Basic Usage

Simple slider with default settings.

Value: 50

<slider-underline label="Volume"></slider-underline>

Custom Range

Set min, max, and step values.

<slider-underline
  label="Temperature"
  min="0"
  max="40"
  value="22"
  unit="°C"
></slider-underline>

Step Values

Slider with larger step increments.

<slider-underline
  label="Quantity"
  min="0"
  max="100"
  step="10"
  value="50"
></slider-underline>

Value Positions

Different label positions for the value display.

Above (default)

Below

Tooltip

<!-- Above (default) -->
<slider-underline label="Brightness" value="75" unit="%"></slider-underline>

<!-- Below -->
<slider-underline label="Brightness" value="75" unit="%" label-position="below"></slider-underline>

<!-- Tooltip -->
<slider-underline label="Brightness" value="75" unit="%" label-position="tooltip"></slider-underline>

Without Value Display

Hide the value display entirely.

<slider-underline label="Silent Mode" show-value="false"></slider-underline>

Disabled State

Disabled slider that cannot be interacted with.

<slider-underline label="Locked" value="30" disabled></slider-underline>

Programmatic Control

Control the slider with JavaScript.

<slider-underline id="programmatic" label="Controlled" value="25"></slider-underline>

<script>
  const slider = document.getElementById('programmatic');
  slider.setValue(50);
  slider.increase();
  slider.decrease();
  slider.reset();
</script>

Custom Styling

Theme with CSS custom properties.

<!-- Green Theme -->
<slider-underline
  label="Green Theme"
  value="60"
  style="--slider-fill: #22c55e; --slider-thumb: #22c55e;"
></slider-underline>

<!-- Purple Large -->
<slider-underline
  label="Purple Large"
  value="40"
  style="--slider-fill: #8b5cf6; --slider-thumb: #8b5cf6; --slider-thumb-size: 28px; --slider-track-height: 8px;"
></slider-underline>

<!-- With Border -->
<slider-underline
  label="With Border"
  value="70"
  style="--slider-fill: #f59e0b; --slider-thumb: white; --slider-thumb-border: 3px solid #f59e0b;"
></slider-underline>

Custom Width

Set a specific width for the slider.

<slider-underline label="Fixed 300px" width="300px" value="50"></slider-underline>

<slider-underline label="Half width (50%)" width="50%" value="75"></slider-underline>

Scale with Ticks

Show tick marks on the slider scale.

<slider-underline label="With 10 Ticks" show-ticks="10" value="60"></slider-underline>

<slider-underline label="With 5 Ticks" show-ticks="5" value="40"></slider-underline>

Scale with Values

Show tick marks with their values displayed.

<!-- Volume -->
<slider-underline
  label="Volume"
  min="0"
  max="100"
  show-ticks="10"
  show-tick-values
  value="70"
  unit="%"
></slider-underline>

<!-- Temperature -->
<slider-underline
  label="Temperature"
  min="-20"
  max="40"
  show-ticks="6"
  show-tick-values
  value="22"
  unit="°C"
  width="400px"
></slider-underline>

<!-- Custom Range with styled ticks -->
<slider-underline
  label="Custom Range"
  min="0"
  max="1000"
  step="100"
  show-ticks="10"
  show-tick-values
  value="500"
  style="--slider-tick-color: #3b82f6; --slider-tick-value-color: #1d4ed8;"
></slider-underline>

Price Range Example

Real-world example with currency formatting.

<slider-underline
  label="Max Price"
  min="0"
  max="1000"
  step="50"
  value="500"
  unit="$"
  show-ticks="10"
  show-tick-values
></slider-underline>

Demo code (CodePen-ready HTML, CSS, JS)

HTML (html)

<h1>Slider Underline</h1>
<p class="subtitle">Range slider with underline track style and value display.</p>
<div class="demo-links">
  <a href="https://manufosela.dev/ui-components/">← Back to components</a>
  <a href="https://github.com/manufosela/ui-components/tree/main/packages/slider-underline" target="_blank" rel="noopener">GitHub Repo</a>
  <a href="playground.html">Playground</a>
  <a href="https://www.npmjs.com/package/@manufosela/slider-underline" target="_blank" rel="noopener">npm</a>
</div>
<div class="demo-theme-toggle">
  <theme-toggle theme="dark"></theme-toggle>
</div>
<div class="demo-section">
    <h2>Basic Usage</h2>
    <p>Simple slider with default settings.</p>
    <slider-underline id="basic" label="Volume"></slider-underline>
    <div class="output" id="basicOutput">Value: 50</div>
    <div class="code-block">&lt;slider-underline label="Volume"&gt;&lt;/slider-underline&gt;</div>
  </div>

  <div class="demo-section">
    <h2>Custom Range</h2>
    <p>Set min, max, and step values.</p>
    <slider-underline
      label="Temperature"
      min="0"
      max="40"
      value="22"
      unit="°C"
    ></slider-underline>
    <div class="code-block">&lt;slider-underline
  label="Temperature"
  min="0"
  max="40"
  value="22"
  unit="°C"
&gt;&lt;/slider-underline&gt;</div>
  </div>

  <div class="demo-section">
    <h2>Step Values</h2>
    <p>Slider with larger step increments.</p>
    <slider-underline
      label="Quantity"
      min="0"
      max="100"
      step="10"
      value="50"
    ></slider-underline>
    <div class="code-block">&lt;slider-underline
  label="Quantity"
  min="0"
  max="100"
  step="10"
  value="50"
&gt;&lt;/slider-underline&gt;</div>
  </div>

  <div class="demo-section">
    <h2>Value Positions</h2>
    <p>Different label positions for the value display.</p>

    <div class="slider-row">
      <h3>Above (default)</h3>
      <slider-underline label="Brightness" value="75" unit="%"></slider-underline>
    </div>

    <div class="slider-row">
      <h3>Below</h3>
      <slider-underline label="Brightness" value="75" unit="%" label-position="below"></slider-underline>
    </div>

    <div class="slider-row">
      <h3>Tooltip</h3>
      <slider-underline label="Brightness" value="75" unit="%" label-position="tooltip"></slider-underline>
    </div>

    <div class="code-block">&lt;!-- Above (default) --&gt;
&lt;slider-underline label="Brightness" value="75" unit="%"&gt;&lt;/slider-underline&gt;

&lt;!-- Below --&gt;
&lt;slider-underline label="Brightness" value="75" unit="%" label-position="below"&gt;&lt;/slider-underline&gt;

&lt;!-- Tooltip --&gt;
&lt;slider-underline label="Brightness" value="75" unit="%" label-position="tooltip"&gt;&lt;/slider-underline&gt;</div>
  </div>

  <div class="demo-section">
    <h2>Without Value Display</h2>
    <p>Hide the value display entirely.</p>
    <slider-underline label="Silent Mode" show-value="false"></slider-underline>
    <div class="code-block">&lt;slider-underline label="Silent Mode" show-value="false"&gt;&lt;/slider-underline&gt;</div>
  </div>

  <div class="demo-section">
    <h2>Disabled State</h2>
    <p>Disabled slider that cannot be interacted with.</p>
    <slider-underline label="Locked" value="30" disabled></slider-underline>
    <div class="code-block">&lt;slider-underline label="Locked" value="30" disabled&gt;&lt;/slider-underline&gt;</div>
  </div>

  <div class="demo-section">
    <h2>Programmatic Control</h2>
    <p>Control the slider with JavaScript.</p>
    <slider-underline id="programmatic" label="Controlled" value="25"></slider-underline>
    <div class="controls">
      <button onclick="document.getElementById('programmatic').decrease()">Decrease</button>
      <button onclick="document.getElementById('programmatic').increase()">Increase</button>
      <button onclick="document.getElementById('programmatic').setValue(50)">Set to 50</button>
      <button onclick="document.getElementById('programmatic').reset()">Reset</button>
    </div>
    <div class="code-block">&lt;slider-underline id="programmatic" label="Controlled" value="25"&gt;&lt;/slider-underline&gt;

&lt;script&gt;
  const slider = document.getElementById('programmatic');
  slider.setValue(50);
  slider.increase();
  slider.decrease();
  slider.reset();
&lt;/script&gt;</div>
  </div>

  <div class="demo-section">
    <h2>Custom Styling</h2>
    <p>Theme with CSS custom properties.</p>

    <div class="slider-row">
      <slider-underline
        label="Green Theme"
        value="60"
        style="--slider-fill: #22c55e; --slider-thumb: #22c55e;"
      ></slider-underline>
    </div>

    <div class="slider-row">
      <slider-underline
        label="Purple Large"
        value="40"
        style="--slider-fill: #8b5cf6; --slider-thumb: #8b5cf6; --slider-thumb-size: 28px; --slider-track-height: 8px;"
      ></slider-underline>
    </div>

    <div class="slider-row">
      <slider-underline
        label="With Border"
        value="70"
        style="--slider-fill: #f59e0b; --slider-thumb: white; --slider-thumb-border: 3px solid #f59e0b;"
      ></slider-underline>
    </div>

    <div class="code-block">&lt;!-- Green Theme --&gt;
&lt;slider-underline
  label="Green Theme"
  value="60"
  style="--slider-fill: #22c55e; --slider-thumb: #22c55e;"
&gt;&lt;/slider-underline&gt;

&lt;!-- Purple Large --&gt;
&lt;slider-underline
  label="Purple Large"
  value="40"
  style="--slider-fill: #8b5cf6; --slider-thumb: #8b5cf6; --slider-thumb-size: 28px; --slider-track-height: 8px;"
&gt;&lt;/slider-underline&gt;

&lt;!-- With Border --&gt;
&lt;slider-underline
  label="With Border"
  value="70"
  style="--slider-fill: #f59e0b; --slider-thumb: white; --slider-thumb-border: 3px solid #f59e0b;"
&gt;&lt;/slider-underline&gt;</div>
  </div>

  <div class="demo-section">
    <h2>Custom Width</h2>
    <p>Set a specific width for the slider.</p>

    <div class="slider-row">
      <slider-underline
        label="Fixed 300px"
        width="300px"
        value="50"
      ></slider-underline>
    </div>

    <div class="slider-row">
      <slider-underline
        label="Half width (50%)"
        width="50%"
        value="75"
      ></slider-underline>
    </div>

    <div class="code-block">&lt;slider-underline label="Fixed 300px" width="300px" value="50"&gt;&lt;/slider-underline&gt;

&lt;slider-underline label="Half width (50%)" width="50%" value="75"&gt;&lt;/slider-underline&gt;</div>
  </div>

  <div class="demo-section">
    <h2>Scale with Ticks</h2>
    <p>Show tick marks on the slider scale.</p>

    <div class="slider-row">
      <slider-underline
        label="With 10 Ticks"
        show-ticks="10"
        value="60"
      ></slider-underline>
    </div>

    <div class="slider-row">
      <slider-underline
        label="With 5 Ticks"
        show-ticks="5"
        value="40"
      ></slider-underline>
    </div>

    <div class="code-block">&lt;slider-underline label="With 10 Ticks" show-ticks="10" value="60"&gt;&lt;/slider-underline&gt;

&lt;slider-underline label="With 5 Ticks" show-ticks="5" value="40"&gt;&lt;/slider-underline&gt;</div>
  </div>

  <div class="demo-section">
    <h2>Scale with Values</h2>
    <p>Show tick marks with their values displayed.</p>

    <div class="slider-row">
      <slider-underline
        label="Volume"
        min="0"
        max="100"
        show-ticks="10"
        show-tick-values
        value="70"
        unit="%"
      ></slider-underline>
    </div>

    <div class="slider-row">
      <slider-underline
        label="Temperature"
        min="-20"
        max="40"
        show-ticks="6"
        show-tick-values
        value="22"
        unit="°C"
        width="400px"
      ></slider-underline>
    </div>

    <div class="slider-row">
      <slider-underline
        label="Custom Range"
        min="0"
        max="1000"
        step="100"
        show-ticks="10"
        show-tick-values
        value="500"
        style="--slider-tick-color: #3b82f6; --slider-tick-value-color: #1d4ed8;"
      ></slider-underline>
    </div>

    <div class="code-block">&lt;!-- Volume --&gt;
&lt;slider-underline
  label="Volume"
  min="0"
  max="100"
  show-ticks="10"
  show-tick-values
  value="70"
  unit="%"
&gt;&lt;/slider-underline&gt;

&lt;!-- Temperature --&gt;
&lt;slider-underline
  label="Temperature"
  min="-20"
  max="40"
  show-ticks="6"
  show-tick-values
  value="22"
  unit="°C"
  width="400px"
&gt;&lt;/slider-underline&gt;

&lt;!-- Custom Range with styled ticks --&gt;
&lt;slider-underline
  label="Custom Range"
  min="0"
  max="1000"
  step="100"
  show-ticks="10"
  show-tick-values
  value="500"
  style="--slider-tick-color: #3b82f6; --slider-tick-value-color: #1d4ed8;"
&gt;&lt;/slider-underline&gt;</div>
  </div>

  <div class="demo-section">
    <h2>Price Range Example</h2>
    <p>Real-world example with currency formatting.</p>
    <slider-underline
      id="price"
      label="Max Price"
      min="0"
      max="1000"
      step="50"
      value="500"
      unit="$"
      show-ticks="10"
      show-tick-values
    ></slider-underline>
    <div class="code-block">&lt;slider-underline
  label="Max Price"
  min="0"
  max="1000"
  step="50"
  value="500"
  unit="$"
  show-ticks="10"
  show-tick-values
&gt;&lt;/slider-underline&gt;</div>
  </div>

CSS (css)

:root {
  --bg: #0c0f14;
  --bg-elevated: #141923;
  --bg-panel: #171d28;
  --border: #262f3f;
  --text: #f4f6fb;
  --text-muted: #a7b0c2;
  --text-dim: #7d879b;
  --accent: #ff8a3d;
  --accent-strong: #ff6a00;
  --accent-soft: rgba(255, 138, 61, 0.16);
  --shadow: 0 20px 50px rgba(5, 8, 14, 0.45);
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --max-width: 1160px;
}

h1 { color: #1d1d1f; }
    .demo-section {
      background: white;
      padding: 2rem;
      border-radius: 12px;
      margin-bottom: 2rem;
      box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    }
    h2 { margin-top: 0; color: #1d1d1f; }
    h3 { color: #1d1d1f; font-size: 1rem; margin-bottom: 0.5rem; }
    p { color: #86868b; line-height: 1.6; }
    a { color: #3b82f6; }
    .code-block {
      background: #1d1d1f;
      color: #f5f5f7;
      padding: 1rem;
      border-radius: 8px;
      font-family: monospace;
      font-size: 0.8rem;
      margin-top: 1rem;
      overflow-x: auto;
      white-space: pre;
    }
    .output {
      margin-top: 1rem;
      padding: 1rem;
      background: #f5f5f7;
      border-radius: 8px;
      font-family: monospace;
    }
    .controls {
      display: flex;
      gap: 0.5rem;
      margin-top: 1rem;
    }
    .controls button {
      padding: 0.5rem 1rem;
      border: 1px solid #e5e7eb;
      border-radius: 6px;
      background: white;
      cursor: pointer;
    }
    .controls button:hover {
      background: #f3f4f6;
    }
    .slider-row {
      margin-bottom: 1.5rem;
    }

    footer {
      text-align: center;
      margin-top: 3rem;
      padding-top: 2rem;
      border-top: 1px solid #d2d2d7;
      color: #86868b;
      font-size: 0.9rem;
    }
    footer a { color: #1d1d1f; text-decoration: none; }
    footer a:hover { text-decoration: underline; }
  


@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;600;700&display=swap');

:root {
  --bg: #f5f5f7;
  --bg-2: #ffffff;
  --bg-spot-1: #f8e9d0;
  --bg-spot-2: #e8eef8;
  --card: #ffffff;
  --text: #1d1d1f;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #ffb000;
  --accent-2: #00a7d6;
  --accent-soft: rgba(255, 176, 0, 0.18);
  --surface-1: #f3f4f6;
  --surface-2: #eef2f7;
  --code-bg: #111827;
  --code-text: #f9fafb;
  --panel-bg: rgba(255, 255, 255, 0.85);
  --overlay-bg: rgba(255, 255, 255, 0.98);
}

:root.dark {
  --bg: #0f1117;
  --bg-2: #151a26;
  --bg-spot-1: #1a2136;
  --bg-spot-2: #1d1b34;
  --card: #1c2233;
  --text: #f3f6ff;
  --muted: #b8c0d9;
  --line: #2b3247;
  --accent: #ffb000;
  --accent-2: #00d0ff;
  --accent-soft: rgba(255, 176, 0, 0.25);
  --surface-1: #0b0f1a;
  --surface-2: #263046;
  --code-bg: #0b0f1a;
  --code-text: #d6d9e6;
  --panel-bg: rgba(28, 34, 51, 0.8);
  --overlay-bg: rgba(15, 17, 23, 0.98);
}

* {
  box-sizing: border-box;
}

a {
  color: var(--accent);
}

h1 {
  color: var(--accent);
}

.demo-links {
  margin-top: 12px;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.demo-links a {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.demo-links a:hover {
  color: var(--text);
  border-color: var(--accent-2);
}

.demo-theme-toggle {
  margin-top: 12px;
  display: flex;
  justify-content: center;
}

header {
  border-bottom: 1px solid var(--line);
}

.demo-card,
.section,
.demo-section,
.panel,
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  color: var(--text);
  box-shadow: 0 18px 36px rgba(6, 10, 24, 0.45);
}

.demo-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.demo-card .code-block {
  margin-top: auto;
}

.demo-grid,
.grid {
  align-items: stretch;
}

.demo-card h2,
.demo-card h3,
.section h2,
.demo-section h2,
.panel-header {
  color: var(--text);
}

.label,
.stat-label,
.category-title,
.subtitle,
.hint,
.note {
  color: var(--muted);
}

.info-item,
.capability,
.preference,
.option-group,
.output,
.current-url,
.event-log,
.result-card,
.log,
.stat {
  background: var(--surface-1);
  border: 1px solid var(--line);
  color: var(--text);
}

.info-item .label,
.capability .name {
  color: var(--muted);
}

.panel-header,
.options,
.topbar,
.top-links {
  background: var(--panel-bg);
  border-bottom: 1px solid var(--line);
  color: var(--text);
}

.subtitle,
.hint,
.note,
.demo-card p,
.section p,
.demo-section p {
  color: var(--muted);
}

.code-block,
pre,
code {
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: 8px;
}

.value-display,
.output,
.result,
.demo-output {
  background: var(--surface-1);
  border: 1px solid var(--line);
  color: var(--text);
}

button {
  background: linear-gradient(120deg, var(--accent), #ff6a00);
  color: #111;
  border: none;
}

button:hover {
  filter: brightness(1.05);
}

input,
select,
textarea {
  background: var(--surface-1);
  color: var(--text);
  border: 1px solid var(--line);
}

footer {
  color: var(--muted);
}

footer a {
  color: var(--text);
}

arc-slider {
  --arc-slider-text-color: var(--text);
  --arc-slider-value-bg: var(--surface-1);
  --arc-slider-value-border: var(--line);
  --arc-slider-value-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
}

rich-select {
  --caller-background: var(--card);
  --caller-color: var(--text);
  --caller-border: 1px solid var(--line);
  --caller-hover-background: var(--surface-2);
  --caller-hover-color: var(--text);
  --caller-hover-border-color: var(--line);
  --caller-focus-border-color: var(--accent-2);
  --caller-focus-shadow: 0 0 0 3px rgba(0, 208, 255, 0.25);
  --caller-disabled-background: var(--surface-1);
  --caller-disabled-color: #6b7280;
  --caller-disabled-border-color: var(--line);
  --arrow-color: var(--muted);
  --selectOptions-background: var(--card);
  --selectOptions-border: 1px solid var(--line);
  --selectOptions-shadow: 0 10px 22px rgba(0, 0, 0, 0.45);
  --input-background: var(--surface-1);
  --input-border: 1px solid var(--line);
  --input-color: var(--text);
  --input-placeholder-color: #6b7280;
  --option-color: var(--text);
  --option-hover-background: var(--surface-2);
  --option-hover-color: var(--text);
  --option-active-background: var(--accent);
  --option-active-color: #111;
  --option-selected-background: var(--accent-soft);
  --option-selected-color: var(--text);
  --option-disabled-background: var(--surface-1);
  --option-disabled-color: #6b7280;
}

multi-select {
  --multi-select-bg: var(--card);
  --multi-select-border-color: var(--line);
  --multi-select-border-hover: var(--line);
  --multi-select-border-focus: var(--accent-2);
  --multi-select-text-color: var(--text);
  --multi-select-placeholder-color: #6b7280;
  --multi-select-arrow-color: var(--muted);
  --multi-select-dropdown-bg: var(--card);
  --multi-select-shadow: 0 10px 22px rgba(0, 0, 0, 0.45);
  --multi-select-option-hover-bg: var(--surface-2);
  --multi-select-option-selected-bg: var(--accent-soft);
}

tab-nav {
  --tab-bg: var(--card);
  --tab-border: var(--line);
  --tab-text: var(--muted);
  --tab-active-text: var(--text);
  --tab-hover-bg: var(--surface-2);
  --tab-active-border: var(--accent);
  --tab-disabled: #9ca3af;
}

slider-underline {
  --slider-track: var(--surface-2);
  --slider-fill: var(--accent);
  --slider-thumb: var(--accent);
  --slider-label-color: var(--text);
  --slider-tick-color: #9ca3af;
  --slider-tick-value-color: var(--muted);
}

header-nav {
  --header-bg: var(--card);
  --header-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
  --header-link-color: var(--text);
  --header-link-hover: var(--accent);
  --header-mobile-hover-bg: var(--surface-2);
}

calendar-inline {
  --calendar-bg: var(--card);
  --calendar-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
  --calendar-text: var(--text);
  --calendar-accent: var(--accent);
  --calendar-today: var(--accent-soft);
  --calendar-selected: var(--accent);
  --calendar-hover-bg: var(--surface-2);
  --calendar-muted: var(--muted);
  --calendar-muted-strong: #9ca3af;
  --calendar-other-month: #9ca3af;
  --calendar-disabled: #cbd5e1;
  --calendar-holiday: #ef4444;
  --calendar-holiday-selected: #111;
}

marked-calendar {
  --calendar-bg: var(--card);
  --calendar-border: var(--line);
  --calendar-title: var(--text);
  --calendar-muted: var(--muted);
  --calendar-surface: var(--surface-1);
  --calendar-accent: var(--accent);
  --calendar-accent-hover: #ff7a1a;
  --calendar-border-strong: var(--line);
  --calendar-contrast: #111;
  --calendar-nav-bg: var(--surface-1);
  --calendar-nav-hover: var(--surface-2);
}

radar-chart {
  --radar-bg: var(--card);
  --radar-grid-color: var(--line);
  --radar-axis-color: #94a3b8;
  --radar-label-color: var(--muted);
}

multi-carousel {
  --carousel-bg: var(--card);
  --carousel-arrow-bg: var(--surface-1);
  --carousel-arrow-color: var(--text);
  --carousel-arrow-hover-bg: var(--surface-2);
  --carousel-arrow-hover-color: var(--text);
  --carousel-nav-bg: var(--surface-1);
  --carousel-nav-color: var(--muted);
  --carousel-nav-hover: #9ca3af;
  --carousel-nav-active: var(--accent);
  --carousel-focus-color: var(--accent-2);
}

nav-list {
  --nav-list-bg: var(--card);
  --nav-list-border-color: var(--line);
  --nav-list-selected-border-color: var(--accent);
  --nav-list-selected-bg: var(--surface-2);
  --nav-list-hover-bg: var(--surface-2);
  --nav-list-selected-color: var(--text);
}

theme-toggle {
  --theme-toggle-bg: var(--card);
  --theme-toggle-icon-color: var(--muted);
  --theme-toggle-hover-bg: var(--surface-2);
  --theme-toggle-active-bg: var(--surface-1);
  --theme-toggle-active-color: var(--text);
  --theme-toggle-dark-bg: var(--card);
  --theme-toggle-dark-border: var(--line);
  --theme-toggle-dark-icon-color: var(--muted);
  --theme-toggle-dark-active-bg: var(--surface-1);
  --theme-toggle-dark-active-color: var(--text);
  --theme-toggle-dark-hover-bg: var(--surface-2);
}

qr-code {
  --qr-fg: #0f1117;
  --qr-bg: #f3f6ff;
}

click-clock {
  --clock-color: var(--text);
  --clock-bg: var(--card);
  --clock-muted-color: var(--muted);
}

historical-line {
  --title-color: var(--text);
  --border-color: var(--line);
  --year-bg: var(--surface-1);
}

circle-steps {
  --steps-muted: var(--muted);
  --steps-text: var(--text);
  --steps-pending: var(--surface-2);
}

rich-inputfile {
  --input-border: var(--line);
  --input-border-focus: var(--accent-2);
  --input-bg: var(--card);
  --input-label-color: var(--text);
  --input-hover-bg: var(--surface-2);
  --input-drag-bg: var(--accent-soft);
  --input-disabled-bg: var(--surface-1);
  --input-success-border: #22c55e;
  --input-success-bg: rgba(34, 197, 94, 0.12);
  --input-icon-color: #94a3b8;
  --input-text-color: var(--muted);
  --input-accent-color: var(--accent-2);
  --input-file-bg: var(--surface-1);
  --input-preview-bg: var(--surface-1);
  --input-file-name-color: var(--text);
  --input-file-size-color: var(--muted);
  --input-error-color: #ef4444;
  --input-hint-color: var(--muted);
}

data-card {
  --data-card-bg: var(--card);
  --data-card-border-color: var(--line);
  --data-card-title-color: var(--text);
  --data-card-desc-color: var(--muted);
  --data-card-info-bg: var(--overlay-bg);
  --data-card-info-close-bg: var(--surface-2);
  --data-card-info-close-color: var(--text);
  --data-card-info-close-hover-bg: var(--surface-1);
  --data-card-info-text: var(--text);
  --data-card-loading-color: var(--muted);
  --data-card-info-trigger-hover: var(--accent);
}

app-modal {
  --app-modal-bg: var(--card);
  --app-modal-body-color: var(--text);
  --app-modal-standalone-bg: rgba(255, 176, 0, 0.35);
  --app-modal-standalone-color: #111;
  --app-modal-standalone-hover-bg: rgba(255, 176, 0, 0.6);
}

JS (js)

document.querySelectorAll('.footer-year').forEach(el => el.textContent = new Date().getFullYear());
  

    import "https://esm.sh/@manufosela/slider-underline";

    // Basic event listener
    const basic = document.getElementById('basic');
    const basicOutput = document.getElementById('basicOutput');
    basic.addEventListener('input', (e) => {
      basicOutput.textContent = `Value: ${e.detail.value}`;
    });
  

  import '../../theme-toggle/src/theme-toggle.js';

  const root = document.documentElement;
  root.classList.add('dark');

  const toggle = document.querySelector('theme-toggle');
  if (toggle) {
    toggle.theme = root.classList.contains('dark') ? 'dark' : 'light';
    toggle.addEventListener('theme-changed', (event) => {
      const theme = event.detail?.theme;
      if (!theme) return;
      root.classList.toggle('dark', theme === 'dark');
    });
  }