/* ──────────────────────────────────────────────
   rhx-color-picker — Color picker with saturation area,
   hue/opacity sliders, text input, and preset swatches
   ────────────────────────────────────────────── */

.rhx-color-picker {
    display: inline-flex;
    flex-direction: column;
    gap: var(--rhx-space-sm);
    position: relative;
}

/* ── Label ── */

.rhx-color-picker__label {
    font-size: var(--rhx-font-size-sm);
    font-weight: var(--rhx-font-weight-medium);
    color: var(--rhx-color-text);
}

/* ── Trigger button ── */

.rhx-color-picker__trigger {
    display: inline-flex;
    align-items: center;
    gap: var(--rhx-space-sm);
    padding: var(--rhx-space-sm) var(--rhx-space-md);
    border: var(--rhx-border-width) solid var(--rhx-color-border);
    border-radius: var(--rhx-radius-md);
    background: var(--rhx-color-surface);
    cursor: pointer;
    font-size: var(--rhx-font-size-sm);
    color: var(--rhx-color-text);
    transition: border-color 0.15s ease;
}

.rhx-color-picker__trigger:hover {
    border-color: var(--rhx-color-brand-500);
}

.rhx-color-picker__trigger:focus-visible {
    outline: 2px solid var(--rhx-color-brand-500);
    outline-offset: 2px;
}

/* ── Swatch preview ── */

.rhx-color-picker__swatch {
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: var(--rhx-radius-sm);
    border: var(--rhx-border-width) solid var(--rhx-color-border);
    flex-shrink: 0;
}

/* ── Trigger text ── */

.rhx-color-picker__text {
    font-family: var(--rhx-font-mono, monospace);
    font-size: var(--rhx-font-size-sm);
}

/* ── Panel ── */

.rhx-color-picker__panel {
    display: flex;
    flex-direction: column;
    gap: var(--rhx-space-md);
    padding: var(--rhx-space-md);
    background: var(--rhx-color-surface);
    border: var(--rhx-border-width) solid var(--rhx-color-border);
    border-radius: var(--rhx-radius-lg);
    box-shadow: var(--rhx-shadow-lg);
    min-width: 14rem;
    z-index: var(--rhx-z-dropdown, 1000);
}

.rhx-color-picker__panel[hidden] {
    display: none;
}

/* Non-inline: position as dropdown */
.rhx-color-picker:not(.rhx-color-picker--inline) .rhx-color-picker__panel {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: var(--rhx-space-xs);
}

/* Inline: no dropdown positioning */
.rhx-color-picker--inline .rhx-color-picker__panel {
    position: static;
    box-shadow: none;
    border: var(--rhx-border-width) solid var(--rhx-color-border);
}

/* ── Saturation area ── */

.rhx-color-picker__saturation {
    position: relative;
    width: 100%;
    height: 8rem;
    border-radius: var(--rhx-radius-sm);
    background: linear-gradient(to bottom, transparent, #000),
                linear-gradient(to right, #fff, hsl(0, 100%, 50%));
    cursor: crosshair;
    user-select: none;
}

.rhx-color-picker__saturation-cursor {
    position: absolute;
    width: 0.75rem;
    height: 0.75rem;
    border: 2px solid white;
    border-radius: 50%;
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.5);
    transform: translate(-50%, -50%);
    pointer-events: none;
}

/* ── Sliders ── */

.rhx-color-picker__sliders {
    display: flex;
    flex-direction: column;
    gap: var(--rhx-space-sm);
}

/* ── Hue slider ── */

.rhx-color-picker__hue {
    position: relative;
    height: 0.75rem;
    border-radius: var(--rhx-radius-full);
    background: linear-gradient(
        to right,
        hsl(0, 100%, 50%),
        hsl(60, 100%, 50%),
        hsl(120, 100%, 50%),
        hsl(180, 100%, 50%),
        hsl(240, 100%, 50%),
        hsl(300, 100%, 50%),
        hsl(360, 100%, 50%)
    );
}

.rhx-color-picker__hue-input,
.rhx-color-picker__opacity-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    opacity: 0;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
}

/* Visible thumb for hue/opacity */
.rhx-color-picker__hue-input::-webkit-slider-thumb,
.rhx-color-picker__opacity-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--rhx-color-border);
    box-shadow: var(--rhx-shadow-sm);
    cursor: pointer;
}

.rhx-color-picker__hue-input::-moz-range-thumb,
.rhx-color-picker__opacity-input::-moz-range-thumb {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--rhx-color-border);
    box-shadow: var(--rhx-shadow-sm);
    cursor: pointer;
}

/* Make slider visible for thumb */
.rhx-color-picker__hue-input,
.rhx-color-picker__opacity-input {
    opacity: 1;
    background: transparent;
}

.rhx-color-picker__hue-input::-webkit-slider-runnable-track,
.rhx-color-picker__opacity-input::-webkit-slider-runnable-track {
    background: transparent;
    height: 0.75rem;
}

.rhx-color-picker__hue-input::-moz-range-track,
.rhx-color-picker__opacity-input::-moz-range-track {
    background: transparent;
    height: 0.75rem;
}

/* ── Opacity slider ── */

.rhx-color-picker__opacity {
    position: relative;
    height: 0.75rem;
    border-radius: var(--rhx-radius-full);
    /* Checkerboard + gradient (updated by JS) */
    background:
        linear-gradient(to right, transparent, #000),
        repeating-conic-gradient(#ccc 0% 25%, #fff 0% 50%) 0 0 / 0.5rem 0.5rem;
}

/* ── Color text input ── */

.rhx-color-picker__input-row {
    display: flex;
    gap: var(--rhx-space-sm);
}

.rhx-color-picker__input {
    flex: 1;
    padding: var(--rhx-space-xs) var(--rhx-space-sm);
    border: var(--rhx-border-width) solid var(--rhx-color-border);
    border-radius: var(--rhx-radius-sm);
    font-family: var(--rhx-font-mono, monospace);
    font-size: var(--rhx-font-size-sm);
    color: var(--rhx-color-text);
    background: var(--rhx-color-surface);
}

.rhx-color-picker__input:focus {
    outline: 2px solid var(--rhx-color-brand-500);
    outline-offset: -1px;
}

/* ── Preset swatches ── */

.rhx-color-picker__swatches {
    display: flex;
    flex-wrap: wrap;
    gap: var(--rhx-space-xs);
}

.rhx-color-picker__preset {
    width: 1.5rem;
    height: 1.5rem;
    border-radius: var(--rhx-radius-sm);
    border: var(--rhx-border-width) solid var(--rhx-color-border);
    cursor: pointer;
    padding: 0;
    transition: transform 0.1s ease;
}

.rhx-color-picker__preset:hover {
    transform: scale(1.15);
}

.rhx-color-picker__preset:focus-visible {
    outline: 2px solid var(--rhx-color-brand-500);
    outline-offset: 2px;
}

/* ── Hint ── */

.rhx-color-picker__hint {
    font-size: var(--rhx-font-size-xs);
    color: var(--rhx-color-text-muted);
}

/* ── Error ── */

.rhx-color-picker__error {
    font-size: var(--rhx-font-size-xs);
    color: var(--rhx-color-danger-500);
}

.rhx-color-picker--error .rhx-color-picker__trigger,
.rhx-color-picker[data-rhx-invalid] .rhx-color-picker__trigger {
    border-color: var(--rhx-color-danger-500);
}

/* ── Disabled ── */

.rhx-color-picker--disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* ── Size variants ── */

.rhx-color-picker--small .rhx-color-picker__trigger {
    padding: var(--rhx-space-xs) var(--rhx-space-sm);
    font-size: var(--rhx-font-size-xs);
}

.rhx-color-picker--small .rhx-color-picker__swatch {
    width: 1.125rem;
    height: 1.125rem;
}

.rhx-color-picker--large .rhx-color-picker__trigger {
    padding: var(--rhx-space-md) var(--rhx-space-lg);
}

.rhx-color-picker--large .rhx-color-picker__swatch {
    width: 2rem;
    height: 2rem;
}

/* ── Reduced motion ── */

@media (prefers-reduced-motion: reduce) {
    .rhx-color-picker__trigger,
    .rhx-color-picker__preset {
        transition: none;
    }
}