/* ===========================================
   Theme Picker - Slide-out Panel
   =========================================== */

/* Backdrop */
.theme-picker-backdrop {
    position: fixed;
    inset: 0;
    background: var(--overlay-bg);
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.theme-picker-backdrop.open {
    opacity: 1;
    pointer-events: auto;
}

/* Panel */
.theme-picker-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 520px;
    height: 100vh;
    background: var(--c-bg);
    border-left: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    z-index: 2001;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.theme-picker-panel.open { transform: translateX(0); }

/* Panel Header */
.theme-picker-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--border-light);
    flex-shrink: 0;
}

.theme-picker-header h3 { margin: 0; font-size: 1rem; font-weight: 600; color: var(--text-primary); }

.theme-picker-close {
    background: transparent; border: none; padding: 0.25rem; cursor: pointer;
    color: var(--text-secondary); font-size: 1.25rem; line-height: 1; margin: 0; min-width: unset;
}
.theme-picker-close:hover { color: var(--text-primary); transform: none; }

/* Panel Body */
.theme-picker-body { flex: 1; overflow-y: auto; padding: 1rem 1.25rem; }

/* Section */
.tp-section { margin-bottom: 1.25rem; }

.tp-section-title {
    font-size: 0.7rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 0.5rem;
}

/* Preset Grid */
.tp-presets-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem; }

.tp-preset-card {
    background: var(--surface); border: 2px solid var(--border-light); border-radius: 6px;
    padding: 0.4rem 0.5rem; cursor: pointer; transition: border-color 0.15s, box-shadow 0.15s;
}
.tp-preset-card:hover { border-color: var(--c-primary); transform: none; }
.tp-preset-card.active { border-color: var(--c-primary); box-shadow: 0 0 0 1px var(--c-primary); }

.tp-preset-name { font-size: 0.7rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.25rem; }

.tp-preset-swatches { display: flex; gap: 2px; align-items: center; }

.tp-preset-swatch {
    width: 16px; height: 16px; border-radius: 3px; border: 1px solid var(--border-light);
}

.tp-preset-swatch-mode {
    width: 12px; height: 12px; border-radius: 2px;
}

.tp-preset-swatch-sep {
    width: 1px; height: 12px; background: var(--border-light); margin: 0 1px; flex-shrink: 0;
}

/* Color Editor Grid */
.tp-color-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.3rem; }
.tp-color-grid.three-col { grid-template-columns: 1fr 1fr 1fr; }

.tp-color-cell {
    display: flex; align-items: center; gap: 0.3rem; background: var(--surface);
    border: 1px solid var(--border-light); border-radius: 5px; padding: 0.25rem 0.35rem;
    position: relative;
}
.tp-color-cell.locked { opacity: 0.65; }

.tp-color-cell-swatch {
    width: 20px; height: 20px; border-radius: 3px; border: 1px solid var(--border);
    flex-shrink: 0; cursor: pointer; position: relative;
}

.tp-color-cell-swatch input[type="color"] {
    position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0;
    cursor: pointer; border: none; padding: 0; margin: 0;
}

.tp-color-cell-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 0; }

.tp-color-cell-label {
    font-size: 0.65rem; font-weight: 600; color: var(--text-primary);
    text-transform: capitalize; line-height: 1.1;
}

.tp-color-cell-hex {
    width: 100%; font-family: monospace; font-size: 0.6rem; padding: 0.05rem 0.15rem;
    border: 1px solid transparent; border-radius: 2px; background: transparent;
    color: var(--text-secondary); margin: 0; line-height: 1.2;
}
.tp-color-cell-hex:hover { border-color: var(--border); background: var(--input-bg); }
.tp-color-cell-hex:focus { border-color: var(--c-primary); background: var(--input-bg); color: var(--text-primary); outline: none; }

/* Color Cell Label Row */
.tp-color-cell-label-row { display: flex; align-items: center; gap: 0.2rem; }
.tp-color-cell-label-row .tp-color-cell-label { flex: 1; }

/* Lock Button */
.tp-lock-btn {
    font-size: 0.55rem; padding: 0; border: none; background: transparent;
    color: var(--text-muted); cursor: pointer; line-height: 1; margin: 0; min-width: unset; opacity: 0.5;
}
.tp-lock-btn:hover { opacity: 1; transform: none; }
.tp-lock-btn.locked { opacity: 1; color: var(--c-warning); }

/* Swap Button */
.tp-swap-btn {
    font-size: 0.55rem; padding: 0.02rem 0.2rem; border: 1px solid var(--border); border-radius: 2px;
    background: transparent; color: var(--text-muted); cursor: pointer; line-height: 1.1;
    margin: 0; min-width: unset; font-weight: 500; text-transform: lowercase;
}
.tp-swap-btn:hover { background: var(--surface-hover); color: var(--text-primary); transform: none; }

/* Swap Popover */
.tp-swap-popover {
    position: absolute; top: 100%; left: 0; z-index: 10; background: var(--c-bg);
    border: 1px solid var(--border); border-radius: 6px; box-shadow: var(--shadow-popover);
    padding: 0.3rem; min-width: 110px; margin-top: 2px;
}

.tp-swap-title {
    font-size: 0.6rem; color: var(--text-muted); padding: 0.1rem 0.3rem;
    font-weight: 600; text-transform: uppercase; letter-spacing: 0.3px;
}

.tp-swap-opt {
    display: flex; align-items: center; gap: 0.35rem; width: 100%; padding: 0.2rem 0.3rem;
    border: none; background: transparent; color: var(--text-primary); font-size: 0.7rem;
    cursor: pointer; border-radius: 3px; text-transform: capitalize; margin: 0; min-width: unset; text-align: left;
}
.tp-swap-opt:hover { background: var(--surface-hover); transform: none; }

.tp-swap-opt-swatch {
    width: 12px; height: 12px; border-radius: 2px; border: 1px solid var(--border-light); flex-shrink: 0;
}

/* Mode Label */
.tp-mode-label {
    display: inline-block; font-size: 0.65rem; font-weight: 600; color: var(--c-primary);
    background: var(--c-primary-soft); padding: 0.1rem 0.4rem; border-radius: 3px; margin-bottom: 0.4rem;
}

/* Palette Generator */
.tp-generator { display: flex; flex-direction: column; gap: 0.4rem; }
.tp-gen-row { display: flex; align-items: center; gap: 0.4rem; }
.tp-gen-label { font-size: 0.7rem; color: var(--text-secondary); flex-shrink: 0; }

.tp-gen-seed-swatch {
    width: 26px; height: 26px; border-radius: 4px; border: 1px solid var(--border);
    flex-shrink: 0; cursor: pointer; position: relative;
}

.tp-gen-seed-swatch input[type="color"] {
    position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0;
    cursor: pointer; border: none; padding: 0; margin: 0;
}

.tp-gen-hex {
    width: 72px; font-family: monospace; font-size: 0.75rem; padding: 0.25rem 0.35rem;
    border: 1px solid var(--border); border-radius: 4px; background: var(--input-bg);
    color: var(--text-primary); margin: 0;
}
.tp-gen-hex:focus { border-color: var(--c-primary); outline: none; }

.tp-gen-random-btn {
    font-size: 0.7rem; padding: 0.25rem 0.45rem; border: 1px solid var(--border); border-radius: 4px;
    background: var(--surface); color: var(--text-secondary); cursor: pointer; margin: 0; min-width: unset; line-height: 1;
}
.tp-gen-random-btn:hover { background: var(--surface-hover); color: var(--text-primary); transform: none; }

/* Generator Sliders */
.tp-gen-sliders { display: flex; flex-direction: column; gap: 0.2rem; }

.tp-gen-slider-row {
    display: flex; align-items: center; gap: 0.4rem;
}

.tp-gen-slider-label {
    font-size: 0.65rem; color: var(--text-secondary); width: 55px; flex-shrink: 0;
    font-weight: 500;
}

.tp-gen-slider-row input[type="range"] {
    flex: 1; height: 4px; -webkit-appearance: none; appearance: none;
    background: var(--border); border-radius: 2px; outline: none;
    cursor: pointer; margin: 0;
}

.tp-gen-slider-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none;
    width: 12px; height: 12px; border-radius: 50%;
    background: var(--c-primary); border: none; cursor: pointer;
}

.tp-gen-slider-row input[type="range"]::-moz-range-thumb {
    width: 12px; height: 12px; border-radius: 50%;
    background: var(--c-primary); border: none; cursor: pointer;
}

.tp-gen-slider-val {
    width: 28px; text-align: right; font-size: 0.65rem; color: var(--text-muted);
    font-family: monospace; flex-shrink: 0;
}

/* Harmony Buttons */
.tp-gen-harmony-btns {
    display: flex;
    gap: 0.3rem;
    flex-wrap: wrap;
}

.tp-harmony-btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.65rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--surface);
    color: var(--text-secondary);
    cursor: pointer;
    margin: 0;
    min-width: unset;
    font-weight: 500;
    transition: all 0.12s;
}

.tp-harmony-btn:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
    border-color: var(--c-primary);
    transform: none;
}

.tp-harmony-btn.active {
    background: var(--c-primary);
    color: var(--c-text-on-bright);
    border-color: var(--c-primary);
}

.tp-gen-preview { display: flex; gap: 2px; }

.tp-gen-preview-swatch {
    flex: 1; height: 20px; border-radius: 3px; border: 1px solid var(--border-light);
}
.tp-gen-preview-swatch.mode-swatch { flex: 0.7; }

.tp-gen-actions {
    display: flex;
    gap: 0.4rem;
    align-items: center;
}

.tp-gen-lock-hint {
    font-size: 0.6rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Rewind / History */
.tp-rewind {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tp-rewind-btn {
    flex: 0 0 auto;
    padding: 0.3rem 0.6rem;
    font-size: 0.7rem;
}

.tp-rewind-btn:disabled {
    opacity: 0.35;
    cursor: default;
}
.tp-rewind-btn:disabled:hover {
    background: var(--surface);
    transform: none;
}

.tp-rewind-label {
    flex: 1;
    text-align: center;
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-family: monospace;
}

/* Import/Export */
.tp-json-area {
    width: 100%; min-height: 90px; font-family: monospace; font-size: 0.65rem; padding: 0.4rem;
    border: 1px solid var(--border); border-radius: 6px; background: var(--input-bg);
    color: var(--text-primary); resize: vertical; margin-bottom: 0.4rem;
}
.tp-json-area:focus { border-color: var(--c-primary); outline: none; }

.tp-btn-row { display: flex; gap: 0.4rem; }

.tp-btn {
    flex: 1; padding: 0.35rem 0.6rem; font-size: 0.75rem; border-radius: 5px;
    border: 1px solid var(--border); background: var(--surface); color: var(--text-primary);
    cursor: pointer; text-align: center; margin: 0; font-weight: 500;
}
.tp-btn:hover { background: var(--surface-hover); transform: none; }

.tp-btn-primary { background: linear-gradient(135deg, var(--c-secondary) 0%, var(--c-secondary-bold) 100%); color: var(--c-text-on-dark); border-color: transparent; }
.tp-btn-primary:hover { box-shadow: 0 0 16px color-mix(in srgb, var(--c-secondary), transparent 65%); }

.tp-btn-danger { border-color: var(--c-danger); color: var(--c-danger); }
.tp-btn-danger:hover { background: var(--c-danger-soft); }

/* Responsive */
@media (max-width: 540px) {
    .theme-picker-panel { width: 100vw; }
}