/* ═══════════════════════════════════════════
   Readership Level Widget
   ═══════════════════════════════════════════ */

#readership-widget {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    font-family: var(--paper-font, "Helvetica Neue", Helvetica, sans-serif);
}

/* ── Hidden state (before scroll/TOC trigger) ── */
#readership-widget.readership-hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
}

/* ── Entrance animation ── */
@keyframes readership-slide-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#readership-widget.readership-entering {
    animation: readership-slide-in 0.4s ease forwards;
}

/* ── Toggle button (pill) ── */
#readership-toggle {
    height: 44px;
    border-radius: 22px;
    border: none;
    background: #333;
    color: #fff;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 16px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0,0,0,0.18);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    white-space: nowrap;
}

#readership-toggle:hover {
    transform: scale(1.04);
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}

.readership-toggle-label {
    font-family: var(--paper-font, "Helvetica Neue", Helvetica, sans-serif);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.01em;
}

.readership-toggle-icon {
    font-size: 18px;
    line-height: 1;
}

/* ── Panel ── */
.readership-panel {
    position: absolute;
    bottom: 56px;
    right: 0;
    width: 300px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.16);
    overflow: hidden;
    transition: opacity 0.25s ease, transform 0.25s ease;
    transform-origin: bottom right;
}

.readership-panel.hidden {
    opacity: 0;
    pointer-events: none;
    transform: scale(0.92) translateY(8px);
}

/* Header */
.readership-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px 10px;
    border-bottom: 1px solid #eee;
}

.readership-panel-title {
    font-size: 13px;
    font-weight: 600;
    color: #333;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.readership-panel-close {
    font-size: 20px;
    color: #999;
    cursor: pointer;
    line-height: 1;
    transition: color 0.15s;
}

.readership-panel-close:hover {
    color: #333;
}

/* Explainer section */
.readership-panel-explainer {
    padding: 12px 16px 8px;
}

.readership-panel-explainer h4 {
    font-size: 12px;
    font-weight: 600;
    color: #555;
    margin: 0 0 6px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.readership-panel-explainer p {
    font-size: 12px;
    color: #666;
    line-height: 1.5;
    margin: 0 0 6px;
    text-align: left;
}

.readership-panel-explainer p:last-child {
    margin-bottom: 0;
}

/* Divider */
.readership-panel-divider {
    height: 1px;
    background: #eee;
    margin: 8px 16px;
}

/* Section title */
.readership-panel-section-title {
    font-size: 12px;
    font-weight: 600;
    color: #555;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: 4px 16px 2px;
}

/* Body */
.readership-panel-body {
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-height: 400px;
    overflow-y: auto;
}

/* Option buttons */
.readership-option {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 10px 12px;
    border: 2px solid transparent;
    border-radius: 10px;
    background: #fafafa;
    cursor: pointer;
    transition: all 0.18s ease;
    text-align: left;
}

.readership-option:hover {
    background: #f0f0f0;
}

.readership-option.active {
    background: #f5f0f7;
    border-color: #978897;
}

.readership-option-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.readership-option-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.readership-option-label {
    font-size: 13px;
    font-weight: 600;
    color: #333;
}

.readership-option-desc {
    font-size: 11px;
    color: #888;
}

/* ── Flash transition on content swap ── */
@keyframes readership-fade {
    0%   { opacity: 0.3; }
    100% { opacity: 1; }
}

.readership-flash {
    animation: readership-fade 0.5s ease forwards;
}

/* ── Easter egg reveal ── */
@keyframes readership-egg-pop {
    0%   { opacity: 0; transform: scale(0.8) translateY(6px); }
    50%  { transform: scale(1.05) translateY(-2px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}

.readership-egg-reveal {
    animation: readership-egg-pop 0.5s ease forwards;
}

/* ── Mobile adjustments ── */
@media (max-width: 768px) {
    #readership-widget {
        bottom: 16px;
        right: 16px;
    }

    #readership-toggle {
        height: 40px;
        padding: 0 14px;
        font-size: 13px;
    }

    .readership-toggle-icon {
        font-size: 16px;
    }

    .readership-panel {
        width: 270px;
        bottom: 50px;
    }
}