/* CMYK to HEX Converter – mobile-first, sleek, light theme */

:root {
    --cmykhex-surface: #ffffff;
    --cmykhex-surface-elev: #f1f3f5;
    --cmykhex-border: #dee2e6;
    --cmykhex-text: #212529;
    --cmykhex-muted: #6c757d;
    --cmykhex-accent: #5c4dbb;
    --cmykhex-accent-hover: #6b5bc9;
    --cmykhex-radius: 16px;
    --cmykhex-radius-sm: 10px;
    --cmykhex-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    --cmykhex-focus: 0 0 0 3px rgba(92, 77, 187, 0.25);
}

/* Tool panel */
.cmyk-hex-tool {
    background: var(--cmykhex-surface);
    border: 1px solid var(--cmykhex-border);
    border-radius: var(--cmykhex-radius);
    box-shadow: var(--cmykhex-shadow);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
    margin-bottom: 2rem;
}

/* Swatch + HEX display */
.cmyk-hex-swatch-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.cmyk-hex-swatch {
    width: 100%;
    max-width: 280px;
    aspect-ratio: 2 / 1;
    border-radius: var(--cmykhex-radius);
    border: 1px solid var(--cmykhex-border);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    transition: background-color 0.15s ease;
}

.cmyk-hex-hex-display {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--cmykhex-text);
    margin: 0;
    letter-spacing: 0.02em;
}

@media (min-width: 480px) {
    .cmyk-hex-hex-display {
        font-size: 1.5rem;
    }
}

/* Channel rows */
.cmyk-hex-channels {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.cmyk-hex-channel {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.cmyk-hex-channel-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--cmykhex-text);
    cursor: default;
}

.cmyk-hex-channel-name {
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cmyk-hex-cyan { color: #0891b2; }
.cmyk-hex-magenta { color: #be185d; }
.cmyk-hex-yellow { color: #b45309; }
.cmyk-hex-black { color: #374151; }

.cmyk-hex-channel-num {
    font-variant-numeric: tabular-nums;
    color: var(--cmykhex-muted);
    min-width: 2ch;
    text-align: right;
}

.cmyk-hex-channel-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.cmyk-hex-range {
    flex: 1;
    height: 8px;
    border-radius: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--cmykhex-surface-elev);
    border: 1px solid var(--cmykhex-border);
}

.cmyk-hex-range:focus {
    outline: none;
    box-shadow: var(--cmykhex-focus);
}

.cmyk-hex-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--cmykhex-border);
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.cmyk-hex-range::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--cmykhex-border);
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.cmyk-hex-range-cyan::-webkit-slider-runnable-track { background: linear-gradient(to right, #e0f7fa 0%, #00acc1 100%); }
.cmyk-hex-range-cyan::-moz-range-track { background: linear-gradient(to right, #e0f7fa 0%, #00acc1 100%); }
.cmyk-hex-range-magenta::-webkit-slider-runnable-track { background: linear-gradient(to right, #fce4ec 0%, #d81b60 100%); }
.cmyk-hex-range-magenta::-moz-range-track { background: linear-gradient(to right, #fce4ec 0%, #d81b60 100%); }
.cmyk-hex-range-yellow::-webkit-slider-runnable-track { background: linear-gradient(to right, #fff8e1 0%, #ffb300 100%); }
.cmyk-hex-range-yellow::-moz-range-track { background: linear-gradient(to right, #fff8e1 0%, #ffb300 100%); }
.cmyk-hex-range-black::-webkit-slider-runnable-track { background: linear-gradient(to right, #eceff1 0%, #455a64 100%); }
.cmyk-hex-range-black::-moz-range-track { background: linear-gradient(to right, #eceff1 0%, #455a64 100%); }

.cmyk-hex-num {
    width: 3.5rem;
    padding: 0.4rem 0.5rem;
    font-size: 0.875rem;
    font-variant-numeric: tabular-nums;
    text-align: center;
    color: var(--cmykhex-text);
    background: var(--cmykhex-surface-elev);
    border: 1px solid var(--cmykhex-border);
    border-radius: var(--cmykhex-radius-sm);
}

.cmyk-hex-num:focus {
    outline: none;
    border-color: var(--cmykhex-accent);
    box-shadow: var(--cmykhex-focus);
}

.cmyk-hex-num::-webkit-inner-spin-button,
.cmyk-hex-num::-webkit-outer-spin-button {
    opacity: 1;
}

/* Output chips */
.cmyk-hex-output {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.cmyk-hex-output-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--cmykhex-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.cmyk-hex-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.cmyk-hex-chip {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.15rem;
    padding: 0.5rem 0.75rem;
    background: var(--cmykhex-surface-elev);
    border: 1px solid var(--cmykhex-border);
    border-radius: var(--cmykhex-radius-sm);
    color: var(--cmykhex-text);
    font: inherit;
    cursor: pointer;
    text-align: left;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.cmyk-hex-chip:hover {
    border-color: var(--cmykhex-accent);
    background: rgba(92, 77, 187, 0.06);
}

.cmyk-hex-chip:focus-visible {
    outline: none;
    box-shadow: var(--cmykhex-focus);
}

.cmyk-hex-chip-tag {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--cmykhex-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cmyk-hex-chip-code {
    font-size: 0.8125rem;
    color: var(--cmykhex-text);
    background: none;
    padding: 0;
}

/* Presets */
.cmyk-hex-presets {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.cmyk-hex-presets-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--cmykhex-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.cmyk-hex-preset-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.cmyk-hex-preset {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--cmykhex-border);
    background: var(--preset-bg, #333);
    cursor: pointer;
    padding: 0;
    transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.cmyk-hex-preset:hover {
    transform: scale(1.1);
    border-color: var(--cmykhex-accent);
    box-shadow: var(--cmykhex-focus);
}

.cmyk-hex-preset:focus-visible {
    outline: none;
    box-shadow: var(--cmykhex-focus);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Copy toast */
.cmyk-hex-toast {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%) translateY(1rem);
    padding: 0.6rem 1rem;
    background: var(--cmykhex-surface);
    border: 1px solid var(--cmykhex-accent);
    border-radius: var(--cmykhex-radius-sm);
    color: var(--cmykhex-text);
    font-size: 0.875rem;
    box-shadow: var(--cmykhex-shadow);
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.cmyk-hex-toast.is-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

@media (min-width: 640px) {
    .cmyk-hex-tool {
        padding: 2rem;
    }

    .cmyk-hex-swatch {
        max-width: 320px;
    }
}