/* ===== Color Palette Easter Egg ===== */

.palette-trigger {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 100;
    display: flex;
    gap: 4px;
    cursor: pointer;
    opacity: 0.45;
    transition: opacity 0.3s;
    padding: 4px;
}

.palette-trigger:hover {
    opacity: 1;
}


.palette-square {
    width: 14px;
    height: 14px;
    border-radius: 4px;
    border: 2px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s, box-shadow 0.2s;
}

.palette-trigger:hover .palette-square {
    transform: scale(1.2);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

/* Desktop picker panel */
.palette-picker {
    position: absolute;
    top: 40px;
    left: 12px;
    z-index: 101;
    background: var(--card-bg);
    border-radius: 14px;
    padding: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    opacity: 0;
    transform: translateY(-8px) scale(0.95);
    pointer-events: none;
    transition: opacity 0.25s, transform 0.25s;
    width: 240px;
}

.palette-picker-scroll {
    max-height: 360px;
    overflow-y: auto;
    scrollbar-width: thin;
}

.palette-picker-scroll::-webkit-scrollbar {
    width: 4px;
}

.palette-picker-scroll::-webkit-scrollbar-thumb {
    background: var(--text-secondary);
    border-radius: 2px;
    opacity: 0.4;
}

.palette-picker.open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.palette-picker-title {
    font-size: 0.7em;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 10px;
    font-weight: 600;
}

.palette-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 7px 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s;
    border: 2px solid transparent;
}

.palette-option:hover {
    background: var(--about-bg);
}

.palette-option.active {
    border-color: var(--border-color);
    background: var(--about-bg);
}

.palette-option-swatches {
    display: flex;
    gap: 3px;
    flex-shrink: 0;
}

.palette-option-swatch {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    border: 1px solid rgba(128, 128, 128, 0.2);
}

.palette-option-info {
    flex: 1;
    min-width: 0;
}

.palette-option-year {
    font-size: 0.8em;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.palette-option-name {
    font-size: 0.65em;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.palette-reset {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    padding: 7px;
    margin-top: 8px;
    border: 1px dashed var(--text-secondary);
    border-radius: 8px;
    background: none;
    color: var(--text-secondary);
    font-size: 0.75em;
    cursor: pointer;
    font-family: inherit;
    transition: border-color 0.15s, color 0.15s;
}

.palette-reset:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

/* Background effect selector */
.bg-section {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}

.bg-section-label {
    font-size: 0.65em;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}

.bg-section-row {
    display: flex;
    gap: 4px;
}

.bg-option {
    flex: 1;
    padding: 5px 4px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: none;
    color: var(--text-secondary);
    font-size: 0.65em;
    cursor: pointer;
    font-family: inherit;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.bg-option:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

.bg-option.active {
    border-color: var(--social-gradient-start);
    color: var(--social-gradient-start);
    background: rgba(102, 126, 234, 0.08);
}

/* Mobile sheet - hidden on desktop, visible on mobile */
.palette-sheet {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 201;
    display: none;
}

@media (max-width: 768px) {
    .palette-trigger {
        top: 10px;
        left: 10px;
        opacity: 0.5;
    }

    .palette-square {
        width: 8px;
        height: 8px;
    }

    .palette-picker {
        display: none !important;
    }

    .palette-sheet {
        display: block;
        background: var(--card-bg);
        border-radius: 20px 20px 0 0;
        padding: 12px 16px calc(env(safe-area-inset-bottom, 16px) + 16px);
        transform: translateY(100%);
        transition: transform 0.4s cubic-bezier(0.32, 0.72, 0, 1);
    }

    .palette-sheet.open {
        transform: translateY(0);
    }

    .palette-sheet-handle {
        width: 36px;
        height: 4px;
        background: var(--text-secondary);
        opacity: 0.3;
        border-radius: 2px;
        margin: 0 auto 14px;
    }

    .palette-sheet-title {
        font-size: 0.7em;
        text-transform: uppercase;
        letter-spacing: 0.1em;
        color: var(--text-secondary);
        margin-bottom: 12px;
        font-weight: 600;
    }

    .palette-sheet-scroll {
        display: flex;
        gap: 10px;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: 4px;
    }

    .palette-sheet-scroll::-webkit-scrollbar {
        display: none;
    }

    .palette-card {
        flex-shrink: 0;
        width: 90px;
        padding: 10px 8px;
        border-radius: 12px;
        background: var(--about-bg);
        text-align: center;
        cursor: pointer;
        transition: transform 0.15s, border-color 0.15s;
        border: 2px solid transparent;
        -webkit-tap-highlight-color: transparent;
    }

    .palette-card.active {
        border-color: var(--border-color);
    }

    .palette-card:active {
        transform: scale(0.95);
    }

    .palette-card-swatches {
        display: flex;
        gap: 4px;
        justify-content: center;
        margin-bottom: 6px;
    }

    .palette-card-swatch {
        width: 24px;
        height: 24px;
        border-radius: 5px;
        border: 1px solid rgba(128, 128, 128, 0.2);
    }

    .palette-card-year {
        font-size: 0.8em;
        font-weight: 700;
        color: var(--text-primary);
    }

    .palette-card-name {
        font-size: 0.6em;
        color: var(--text-secondary);
        margin-top: 2px;
        line-height: 1.2;
    }

    .palette-sheet-footer {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-top: 12px;
        padding-top: 10px;
        border-top: 1px solid rgba(128, 128, 128, 0.15);
    }

    .palette-shake-hint {
        font-size: 0.65em;
        color: var(--text-secondary);
        opacity: 0.6;
    }

    .palette-sheet .palette-reset {
        margin-top: 0;
        width: auto;
        padding: 6px 12px;
        font-size: 0.7em;
    }
}

/* Palette flash animation on change */
.palette-flash {
    position: fixed;
    inset: 0;
    z-index: 300;
    pointer-events: none;
    opacity: 0;
    animation: paletteFlash 0.4s ease-out forwards;
}

@keyframes paletteFlash {
    0% { opacity: 0.25; }
    100% { opacity: 0; }
}

/* Shake notification toast */
.palette-toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    z-index: 400;
    background: var(--card-bg);
    color: var(--text-primary);
    padding: 16px 24px;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    font-size: 0.9em;
    font-weight: 600;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
}

.palette-toast.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.palette-toast-swatches {
    display: flex;
    gap: 6px;
    justify-content: center;
    margin-top: 8px;
}

.palette-toast-swatch {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    border: 1px solid rgba(128, 128, 128, 0.2);
}