/* ===== Хедер: ☰ 🔍 название ⚙ ===== */
/* Прячем 🎨 переключатель тем из хедера */
#mdbook-theme-toggle,
#mdbook-theme-list {
    display: none !important;
}
/* Прячем 🖨 печать из хедера */
.menu-bar .right-buttons > a[href*="print"] {
    display: none !important;
}

/* ⚙ кнопка */
#mdbook-header-settings {
    font-size: 1.2em;
    cursor: pointer;
    transition: transform 0.2s;
}
#mdbook-header-settings:hover {
    transform: rotate(30deg);
}
#mdbook-header-settings.active {
    transform: rotate(45deg);
}

/* ===== Выпадающее меню ⚙ ===== */
#mdbook-settings-menu {
    display: none;
    position: fixed;
    top: 50px;
    right: 8px;
    background: var(--bg);
    border: 1px solid var(--theme-popup-border);
    border-radius: 10px;
    padding: 12px 0;
    z-index: 2000;
    min-width: 220px;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    box-shadow: 0 4px 20px rgba(0,0,0,0.18);
}
#mdbook-settings-menu.visible {
    display: block;
}

#mdbook-settings-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1999;
    background: transparent;
}
#mdbook-settings-overlay.visible {
    display: block;
}

#mdbook-settings-menu .menu-action {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 8px 16px;
    border: none;
    background: none;
    color: var(--fg);
    font-size: 0.95em;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
}
#mdbook-settings-menu .menu-action:hover {
    background: var(--theme-hover);
}
#mdbook-settings-menu .menu-action .icon {
    font-size: 1.1em;
    width: 24px;
    text-align: center;
}

#mdbook-settings-menu .menu-divider {
    border: none;
    border-top: 1px solid var(--theme-popup-border);
    margin: 8px 12px;
}

#mdbook-settings-menu .settings-section-title {
    font-size: 0.7em;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.4;
    padding: 4px 16px 8px;
}

#mdbook-settings-menu .control-row {
    display: flex;
    align-items: center;
    padding: 4px 16px;
    gap: 10px;
}
#mdbook-settings-menu .control-row label {
    font-size: 0.75em;
    opacity: 0.6;
    min-width: 44px;
}
#mdbook-settings-menu .control-row input[type="range"] {
    flex: 1;
    min-width: 60px;
    cursor: pointer;
    height: 4px;
    accent-color: var(--links);
}
#mdbook-settings-menu .control-row .value {
    font-size: 0.7em;
    opacity: 0.45;
    min-width: 24px;
    text-align: right;
}
#mdbook-settings-menu .control-row select {
    flex: 1;
    font-size: 0.8em;
    padding: 4px 6px;
    border-radius: 4px;
    border: 1px solid var(--theme-popup-border);
    background: var(--bg);
    color: var(--fg);
    cursor: pointer;
}

/* Тема: ряд кнопок */
#mdbook-settings-menu .theme-row {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 4px 16px 8px;
}
#mdbook-settings-menu .theme-btn {
    font-size: 0.75em;
    padding: 3px 8px;
    border-radius: 4px;
    border: 1px solid var(--theme-popup-border);
    background: var(--bg);
    color: var(--fg);
    cursor: pointer;
    font-family: inherit;
}
#mdbook-settings-menu .theme-btn:hover {
    background: var(--theme-hover);
}
#mdbook-settings-menu .theme-btn.active {
    background: var(--links);
    color: #fff;
    border-color: var(--links);
}

/* ===== 6/8 — Плавное появление глав ===== */
main {
    animation: shimmerFadeIn 0.15s ease-out;
}
@keyframes shimmerFadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ===== 5/8 — Баннер «Продолжить чтение» ===== */
#shimmer-continue-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 3000;
    background: var(--links, #4183c4);
    color: #fff;
    padding: 10px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    font-size: 0.9em;
    animation: slideDown 0.25s ease;
}
#shimmer-continue-banner a {
    color: #fff;
    font-weight: 700;
    text-decoration: underline;
}
#shimmer-continue-banner a:hover {
    opacity: 0.85;
}
#shimmer-continue-dismiss {
    background: none;
    border: none;
    color: #fff;
    font-size: 1.3em;
    cursor: pointer;
    opacity: 0.7;
    line-height: 1;
    padding: 0 4px;
}
#shimmer-continue-dismiss:hover {
    opacity: 1;
}
@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

/* ===== 4/8 — Авто-скрытие хедера ===== */
.menu-bar.shimmer-header-hidden {
    transform: translateY(-100%);
    opacity: 0;
    transition: transform 0.25s ease, opacity 0.25s ease;
}
.menu-bar {
    transition: transform 0.25s ease, opacity 0.25s ease;
}

/* ===== 3/8 — Прогресс-бар внизу ===== */
#shimmer-progress {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--quote-border, #ddd);
    cursor: pointer;
    z-index: 1000;
    transition: opacity 0.3s;
}
#shimmer-progress-bar {
    height: 100%;
    background: var(--links, #4183c4);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 0 2px 2px 0;
}
#shimmer-progress-label {
    position: fixed;
    bottom: 8px;
    right: 12px;
    font-size: 0.65em;
    opacity: 0.35;
    z-index: 1001;
    pointer-events: none;
    transition: opacity 0.3s;
}
#shimmer-progress:hover {
    height: 6px;
}
#shimmer-progress:hover #shimmer-progress-bar {
    transition: width 0.3s ease, height 0.15s;
}
#shimmer-progress:hover ~ #shimmer-progress-label,
#shimmer-progress-label:hover {
    opacity: 0.7;
}