/**
 * 3Syxty Studio — Slider Component
 *
 * Single and range sliders with numeric input pairing,
 * step snapping, and elegant thumb animations.
 */

/* -----------------------------------------------------------------------
   Base Slider
   ----------------------------------------------------------------------- */

.slider {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
}

.slider-track-wrapper {
    position: relative;
    flex: 1;
    height: 24px;
    display: flex;
    align-items: center;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.slider-track {
    width: 100%;
    height: 4px;
    background-color: var(--surface-tertiary);
    border-radius: var(--radius-full);
    position: relative;
    overflow: visible;
}

.slider-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background-color: var(--accent-primary);
    border-radius: var(--radius-full);
    pointer-events: none;
}

.slider-fill-gradient {
    background: var(--accent-gradient);
}

/* Thumb */
.slider-thumb {
    position: absolute;
    top: 50%;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    border: 2px solid var(--surface-primary);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    transform: translate(-50%, -50%);
    cursor: grab;
    transition: box-shadow var(--motion-instant), transform var(--motion-instant);
    z-index: 1;
}

.slider-thumb:hover {
    box-shadow: 0 0 0 4px var(--accent-primary-muted), 0 1px 4px rgba(0, 0, 0, 0.2);
    transform: translate(-50%, -50%) scale(1.1);
}

.slider-thumb:active,
.slider-thumb[data-dragging="true"] {
    cursor: grabbing;
    box-shadow: 0 0 0 6px var(--accent-primary-muted), 0 1px 4px rgba(0, 0, 0, 0.2);
    transform: translate(-50%, -50%) scale(1.15);
}

.slider-thumb:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Value tooltip on thumb */
.slider-thumb-tooltip {
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    padding: 2px var(--space-2);
    font: var(--type-caption);
    font-weight: 600;
    color: #FFFFFF;
    background-color: var(--surface-invert);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--motion-fast);
}

.slider-thumb:hover .slider-thumb-tooltip,
.slider-thumb[data-dragging="true"] .slider-thumb-tooltip {
    opacity: 1;
}

.slider-thumb-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -4px;
    width: 8px;
    height: 8px;
    background-color: var(--surface-invert);
    transform: rotate(45deg);
    margin-top: -4px;
}

/* Tick marks */
.slider-ticks {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-1);
    pointer-events: none;
}

.slider-tick {
    font: var(--type-overline);
    color: var(--text-muted);
}

/* -----------------------------------------------------------------------
   Numeric Input Pairing
   ----------------------------------------------------------------------- */

.slider-value-input {
    width: 56px;
    height: var(--input-height-sm);
    padding: 0 var(--space-1-5);
    font: var(--type-mono);
    font-size: 12px;
    text-align: center;
    color: var(--text-primary);
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color var(--motion-instant);
    flex-shrink: 0;
}

.slider-value-input:focus {
    border-color: var(--input-border-focus);
}

.slider-value-input::-webkit-inner-spin-button,
.slider-value-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    appearance: none;
}

.slider-value-input {
    -moz-appearance: textfield;
    appearance: textfield;
}

/* -----------------------------------------------------------------------
   Slider Label
   ----------------------------------------------------------------------- */

.slider-labeled {
    display: flex;
    flex-direction: column;
    gap: var(--space-1-5);
}

.slider-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.slider-label {
    font: var(--type-body-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.slider-value-display {
    font: var(--type-mono);
    font-size: 12px;
    color: var(--text-primary);
}

/* -----------------------------------------------------------------------
   Size Variants
   ----------------------------------------------------------------------- */

.slider-sm .slider-track { height: 2px; }
.slider-sm .slider-thumb { width: 12px; height: 12px; }

.slider-lg .slider-track { height: 6px; }
.slider-lg .slider-thumb { width: 20px; height: 20px; }

/* -----------------------------------------------------------------------
   Disabled
   ----------------------------------------------------------------------- */

.slider[data-disabled="true"] {
    opacity: 0.4;
    pointer-events: none;
}

.slider[data-disabled="true"] .slider-thumb {
    cursor: not-allowed;
}

/* -----------------------------------------------------------------------
   Native Range Input (enhanced styling)
   ----------------------------------------------------------------------- */

input[type="range"].input-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: var(--surface-tertiary);
    border-radius: var(--radius-full);
    outline: none;
    cursor: pointer;
}

input[type="range"].input-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-primary);
    border: 2px solid var(--surface-primary);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    cursor: grab;
    transition: box-shadow var(--motion-instant);
}

input[type="range"].input-range::-webkit-slider-thumb:hover {
    box-shadow: 0 0 0 4px var(--accent-primary-muted), 0 1px 4px rgba(0, 0, 0, 0.2);
}

input[type="range"].input-range::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-primary);
    border: 2px solid var(--surface-primary);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    cursor: grab;
}

input[type="range"].input-range:focus-visible::-webkit-slider-thumb {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}