/* ===================================================
   RGB to CMYK Converter — Sticker Nation
   Scoped under .rc-wrap to avoid theme conflicts
   =================================================== */

.rc-wrap {
    --rc-navy: #1a1a2e;
    --rc-red: #e22944;
    --rc-dark: #16213e;
    --rc-mid: #0f3460;
    --rc-light: #f4f6fb;
    --rc-border: #dde1ea;
    --rc-text: #2c2c3a;
    --rc-muted: #6b7280;
    --rc-white: #ffffff;
    --rc-green: #16a34a;
    --rc-amber: #d97706;
    --rc-red-alert: #dc2626;
    --rc-cyan: #00b4d8;
    --rc-magenta: #e6007e;
    --rc-yellow: #ffd600;
    --rc-black: #1a1a1a;
    --rc-radius: 8px;
    --rc-shadow: 0 2px 8px rgba(0,0,0,0.08);

    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--rc-text);
    line-height: 1.5;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 16px;
    box-sizing: border-box;
}

.rc-wrap *, .rc-wrap *::before, .rc-wrap *::after {
    box-sizing: border-box;
}

.rc-app {
    background: var(--rc-white);
    border: 1px solid var(--rc-border);
    border-radius: var(--rc-radius);
    box-shadow: var(--rc-shadow);
    overflow: hidden;
}

/* Tabs */
.rc-tabs {
    display: flex;
    border-bottom: 2px solid var(--rc-border);
    background: var(--rc-light);
}

.rc-tab {
    flex: 1;
    padding: 14px 16px;
    border: none;
    background: none;
    font-size: 14px;
    font-weight: 600;
    color: var(--rc-muted);
    cursor: pointer;
    transition: color 0.2s, box-shadow 0.2s;
    position: relative;
}

.rc-tab:hover {
    color: var(--rc-navy);
}

.rc-tab--active {
    color: var(--rc-navy);
    box-shadow: inset 0 -2px 0 var(--rc-red);
}

/* Panels */
.rc-panel {
    display: none;
    padding: 24px;
}

.rc-panel--active {
    display: block;
}

/* Colour picker layout */
.rc-colour-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
}

@media (max-width: 700px) {
    .rc-colour-layout {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

/* Fields */
.rc-field {
    margin-bottom: 16px;
}

.rc-field label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--rc-navy);
    margin-bottom: 4px;
}

.rc-field input[type="text"],
.rc-field input[type="number"],
.rc-field select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--rc-border);
    border-radius: 6px;
    font-size: 14px;
    color: var(--rc-text);
    background: var(--rc-white);
    transition: border-color 0.2s;
}

.rc-field input:focus,
.rc-field select:focus {
    outline: none;
    border-color: var(--rc-mid);
    box-shadow: 0 0 0 3px rgba(15, 52, 96, 0.1);
}

/* Colour picker row */
.rc-picker-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.rc-picker-row input[type="color"] {
    width: 48px;
    height: 48px;
    border: 2px solid var(--rc-border);
    border-radius: 6px;
    padding: 2px;
    cursor: pointer;
    background: none;
}

.rc-swatch-large {
    flex: 1;
    height: 48px;
    border-radius: 6px;
    border: 1px solid var(--rc-border);
    transition: background-color 0.15s;
}

/* RGB inputs row */
.rc-rgb-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    margin-bottom: 16px;
}

.rc-rgb-row .rc-field {
    margin-bottom: 0;
}

/* Swatches comparison */
.rc-swatches {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
}

.rc-swatch-group {
    text-align: center;
}

.rc-swatch-group span {
    display: block;
    font-size: 12px;
    color: var(--rc-muted);
    margin-top: 6px;
}

.rc-swatch {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    border: 1px solid var(--rc-border);
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
    transition: background-color 0.15s;
}

.rc-swatch-arrow {
    font-size: 24px;
    color: var(--rc-muted);
    padding-bottom: 20px;
}

/* CMYK bars */
.rc-cmyk-bars {
    margin-bottom: 24px;
}

.rc-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.rc-bar-label {
    width: 16px;
    font-weight: 700;
    font-size: 13px;
    text-align: center;
}

.rc-bar[data-channel="c"] .rc-bar-label { color: var(--rc-cyan); }
.rc-bar[data-channel="m"] .rc-bar-label { color: var(--rc-magenta); }
.rc-bar[data-channel="y"] .rc-bar-label { color: var(--rc-yellow); }
.rc-bar[data-channel="k"] .rc-bar-label { color: var(--rc-black); }

.rc-bar-track {
    flex: 1;
    height: 12px;
    background: var(--rc-light);
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--rc-border);
}

.rc-bar-fill {
    height: 100%;
    border-radius: 6px;
    transition: width 0.25s ease, background-color 0.25s;
    width: 0;
}

.rc-bar[data-channel="c"] .rc-bar-fill { background: var(--rc-cyan); }
.rc-bar[data-channel="m"] .rc-bar-fill { background: var(--rc-magenta); }
.rc-bar[data-channel="y"] .rc-bar-fill { background: var(--rc-yellow); }
.rc-bar[data-channel="k"] .rc-bar-fill { background: #444; }

.rc-bar-value {
    width: 40px;
    font-size: 13px;
    font-weight: 600;
    text-align: right;
    color: var(--rc-text);
}

/* Delta-E */
.rc-delta {
    background: var(--rc-light);
    border-radius: var(--rc-radius);
    padding: 16px;
    margin-bottom: 16px;
    text-align: center;
}

.rc-delta-header {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 8px;
    margin-bottom: 10px;
}

.rc-delta-value {
    font-size: 32px;
    font-weight: 800;
    line-height: 1;
    transition: color 0.3s;
}

.rc-delta-label {
    font-size: 13px;
    color: var(--rc-muted);
    font-weight: 600;
}

.rc-delta-bar {
    position: relative;
    height: 8px;
    border-radius: 4px;
    overflow: visible;
    margin-bottom: 10px;
}

.rc-delta-bar-bg {
    position: absolute;
    inset: 0;
    border-radius: 4px;
    background: linear-gradient(to right, var(--rc-green), #84cc16, var(--rc-amber), #ef4444, var(--rc-red-alert));
}

.rc-delta-bar-marker {
    position: absolute;
    top: -4px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--rc-white);
    border: 3px solid var(--rc-navy);
    transform: translateX(-50%);
    transition: left 0.3s ease;
    left: 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.rc-delta-desc {
    font-size: 13px;
    color: var(--rc-muted);
    margin: 0;
}

.rc-delta--green .rc-delta-value { color: var(--rc-green); }
.rc-delta--amber .rc-delta-value { color: var(--rc-amber); }
.rc-delta--red .rc-delta-value { color: var(--rc-red-alert); }

/* Warning */
.rc-warning {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    background: #fef3c7;
    border: 1px solid #f59e0b;
    border-radius: var(--rc-radius);
    margin-bottom: 16px;
}

.rc-warning-icon {
    font-size: 20px;
    line-height: 1;
    flex-shrink: 0;
}

.rc-warning-body strong {
    display: block;
    font-size: 13px;
    margin-bottom: 2px;
}

.rc-warning-body p {
    font-size: 13px;
    color: #92400e;
    margin: 0;
    line-height: 1.4;
}

/* Suggestion */
.rc-suggestion {
    padding: 14px 16px;
    background: var(--rc-light);
    border: 1px solid var(--rc-border);
    border-radius: var(--rc-radius);
    margin-bottom: 16px;
}

.rc-suggestion strong {
    display: block;
    font-size: 13px;
    margin-bottom: 8px;
}

.rc-suggestion-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.rc-swatch-sm {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid var(--rc-border);
}

.rc-suggestion-row span {
    font-size: 14px;
    font-weight: 600;
    font-family: monospace;
}

/* Buttons */
.rc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.rc-btn--primary {
    background: var(--rc-red);
    color: var(--rc-white);
    border-color: var(--rc-red);
}

.rc-btn--primary:hover {
    background: #c91f38;
    border-color: #c91f38;
}

.rc-btn--secondary {
    background: var(--rc-navy);
    color: var(--rc-white);
    border-color: var(--rc-navy);
}

.rc-btn--secondary:hover {
    background: var(--rc-dark);
    border-color: var(--rc-dark);
}

.rc-btn--outline {
    background: var(--rc-white);
    color: var(--rc-navy);
    border-color: var(--rc-border);
}

.rc-btn--outline:hover {
    border-color: var(--rc-navy);
}

.rc-btn-sm {
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    background: var(--rc-navy);
    color: var(--rc-white);
    border: none;
    transition: background 0.2s;
}

.rc-btn-sm:hover {
    background: var(--rc-dark);
}

.rc-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* ==================== IMAGE TAB ==================== */

/* Upload area */
.rc-upload {
    border: 2px dashed var(--rc-border);
    border-radius: var(--rc-radius);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    position: relative;
}

.rc-upload:hover,
.rc-upload.rc-upload--dragover {
    border-color: var(--rc-mid);
    background: var(--rc-light);
}

.rc-upload-inner svg {
    color: var(--rc-muted);
    margin-bottom: 12px;
}

.rc-upload-inner p {
    margin: 0 0 4px;
    font-size: 15px;
    color: var(--rc-text);
}

.rc-upload-inner small {
    color: var(--rc-muted);
    font-size: 12px;
}

.rc-upload input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

/* Image profile field */
.rc-img-profile-field {
    max-width: 300px;
    margin-bottom: 20px;
}

/* Comparison slider */
.rc-comparison {
    position: relative;
    overflow: hidden;
    border-radius: var(--rc-radius);
    border: 1px solid var(--rc-border);
    background: #e5e7eb;
    user-select: none;
    touch-action: none;
}

.rc-comparison canvas {
    display: block;
    width: 100%;
    height: auto;
}

.rc-comparison-overlay {
    position: absolute;
    top: 0;
    left: 50%;
    bottom: 0;
    right: 0;
    overflow: hidden;
}

.rc-comparison-overlay canvas {
    display: block;
    position: absolute;
    top: 0;
    right: 0;
    width: auto;
    height: 100%;
}

.rc-comparison-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 3px;
    transform: translateX(-50%);
    cursor: ew-resize;
    z-index: 10;
}

.rc-comparison-line {
    position: absolute;
    inset: 0;
    background: var(--rc-white);
    box-shadow: 0 0 4px rgba(0,0,0,0.3);
}

.rc-comparison-grip {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--rc-white);
    border: 2px solid var(--rc-navy);
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.rc-comparison-grip::before {
    content: "\2194";
    font-size: 16px;
    color: var(--rc-navy);
}

.rc-comparison-label {
    position: absolute;
    top: 12px;
    padding: 4px 10px;
    background: rgba(0,0,0,0.6);
    color: var(--rc-white);
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
    pointer-events: none;
    z-index: 5;
}

.rc-comparison-label--left { left: 12px; }
.rc-comparison-label--right { right: 12px; }

/* Image stats */
.rc-img-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 20px 0;
}

.rc-stat {
    text-align: center;
    padding: 12px;
    background: var(--rc-light);
    border-radius: var(--rc-radius);
}

.rc-stat-value {
    display: block;
    font-size: 22px;
    font-weight: 800;
    color: var(--rc-navy);
}

.rc-stat-label {
    font-size: 12px;
    color: var(--rc-muted);
}

.rc-img-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* ==================== PALETTE TAB ==================== */

.rc-palette-intro {
    font-size: 14px;
    color: var(--rc-muted);
    margin: 0 0 16px;
}

.rc-palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.rc-palette-card {
    border: 1px solid var(--rc-border);
    border-radius: var(--rc-radius);
    overflow: hidden;
    cursor: pointer;
    transition: box-shadow 0.2s;
}

.rc-palette-card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}

.rc-palette-card-swatches {
    display: grid;
    grid-template-columns: 1fr 1fr;
    height: 56px;
}

.rc-palette-card-rgb,
.rc-palette-card-cmyk {
    position: relative;
}

.rc-palette-card-rgb::after,
.rc-palette-card-cmyk::after {
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 9px;
    font-weight: 700;
    color: rgba(255,255,255,0.8);
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

.rc-palette-card-rgb::after { content: "RGB"; }
.rc-palette-card-cmyk::after { content: "CMYK"; }

.rc-palette-card-info {
    padding: 8px 10px;
    font-size: 11px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.rc-palette-card-hex {
    font-family: monospace;
    font-weight: 600;
}

.rc-palette-card-delta {
    font-weight: 600;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 3px;
}

.rc-palette-card-delta--green { background: #dcfce7; color: #166534; }
.rc-palette-card-delta--amber { background: #fef3c7; color: #92400e; }
.rc-palette-card-delta--red { background: #fee2e2; color: #991b1b; }

.rc-palette-card-remove {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: none;
    background: rgba(0,0,0,0.4);
    color: white;
    font-size: 12px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.rc-palette-card:hover .rc-palette-card-remove {
    display: flex;
}

.rc-palette-actions {
    display: flex;
    gap: 8px;
}

/* ==================== PROBLEM COLOURS ==================== */

.rc-problem-colours {
    padding: 24px;
    border-top: 1px solid var(--rc-border);
}

.rc-problem-colours h3 {
    font-size: 16px;
    color: var(--rc-navy);
    margin: 0 0 4px;
}

.rc-problem-colours > p {
    font-size: 13px;
    color: var(--rc-muted);
    margin: 0 0 16px;
}

.rc-problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
}

.rc-problem-item {
    border: 1px solid var(--rc-border);
    border-radius: 6px;
    overflow: hidden;
    cursor: default;
    position: relative;
}

.rc-problem-swatches {
    display: grid;
    grid-template-columns: 1fr 1fr;
    height: 48px;
}

.rc-problem-swatch-rgb,
.rc-problem-swatch-cmyk {
    position: relative;
}

.rc-problem-info {
    padding: 6px 8px;
    font-size: 11px;
    text-align: center;
    color: var(--rc-text);
}

.rc-problem-info small {
    display: block;
    font-size: 10px;
    color: var(--rc-muted);
}

/* ==================== TOAST ==================== */

.rc-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 10px 20px;
    background: var(--rc-navy);
    color: var(--rc-white);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    z-index: 9999;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.3s, transform 0.3s;
    pointer-events: none;
}

.rc-toast--visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== RESPONSIVE ==================== */

@media (max-width: 600px) {
    .rc-panel {
        padding: 16px;
    }

    .rc-swatches {
        gap: 10px;
    }

    .rc-swatch {
        width: 60px;
        height: 60px;
    }

    .rc-img-stats {
        grid-template-columns: 1fr;
    }

    .rc-problem-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .rc-actions {
        flex-direction: column;
    }

    .rc-actions .rc-btn {
        width: 100%;
    }
}