/**
 * Стили Volumeolite — демо-экран с панелью задач, курсором и индикатором громкости.
 * Hero, секции, карточки и CTA — из base.css. Цвета — из theme.css.
 */

/* ——— Клавиша ——— */
.kbd {
    display: inline-block;
    min-width: 28px;
    padding: 3px 8px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-bottom-width: 2px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--vt-light);
    text-align: center;
    white-space: nowrap;
}

.kbd--theme {
    background: rgba(var(--vt-theme-rgb), 0.18);
    border-color: rgba(var(--vt-theme-rgb), 0.5);
    color: var(--vt-theme-light);
}

/* ——— Демо: экран ——— */
.vol-demo {
    max-width: 820px;
    margin: 0 auto;
}

.vol-demo__screen {
    position: relative;
    aspect-ratio: 16 / 10;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    background: radial-gradient(ellipse at 30% 25%, rgba(var(--vt-theme-rgb), 0.35) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 70%, rgba(var(--vt-accent-rgb), 0.18) 0%, transparent 50%),
                #1b2733;
}

/* Полоса-подсветка активной зоны */
.vol-demo__zone {
    position: absolute;
    background: rgba(var(--vt-theme-rgb), 0.28);
    box-shadow: 0 0 24px rgba(var(--vt-theme-rgb), 0.5);
    opacity: 0;
    transition: opacity 0.25s ease;
    pointer-events: none;
}

.vol-demo__zone.is-active { opacity: 1; }

.vol-demo__zone--taskbar { left: 0; right: 0; bottom: 0; height: 38px; }
.vol-demo__zone--right { top: 0; bottom: 38px; right: 0; width: 10px; }

/* Панель задач */
.vol-demo__taskbar {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 38px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 14px;
    background: rgba(12, 18, 24, 0.85);
    backdrop-filter: blur(8px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.vol-demo__tile {
    width: 22px;
    height: 22px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.12);
}

.vol-demo__spacer { flex: 1; }

.vol-demo__tray {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
}

.vol-demo__tray-icon {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 6px;
    color: var(--vt-theme-light);
    transition: background 0.2s ease;
}

.vol-demo__tray-icon.is-active { background: rgba(var(--vt-theme-rgb), 0.25); }

/* Полоса уровня на значке */
.vol-demo__tray-level {
    position: absolute;
    left: 3px;
    right: 3px;
    bottom: 2px;
    height: 2px;
    border-radius: 2px;
    background: var(--vt-theme-light);
    transform-origin: left center;
    transition: transform 0.25s ease;
}

/* Индикатор громкости (OSD) */
.vol-demo__osd {
    position: absolute;
    left: 50%;
    bottom: 64px;
    transform: translate(-50%, 12px);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 240px;
    padding: 12px 16px;
    border-radius: 14px;
    background: rgba(18, 24, 32, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    opacity: 0;
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.vol-demo__osd.is-visible {
    opacity: 1;
    transform: translate(-50%, 0);
}

.vol-demo__osd.is-muted { color: var(--vt-gray); }

.vol-demo__osd-icon {
    flex-shrink: 0;
    color: var(--vt-theme-light);
}

.vol-demo__osd.is-muted .vol-demo__osd-icon { color: rgba(255, 255, 255, 0.45); }

.vol-demo__osd-icon--off { display: none; }
.vol-demo__osd.is-muted .vol-demo__osd-icon--on { display: none; }
.vol-demo__osd.is-muted .vol-demo__osd-icon--off { display: block; }

.vol-demo__track {
    position: relative;
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.15);
    overflow: hidden;
}

.vol-demo__fill {
    position: absolute;
    inset: 0 auto 0 0;
    width: 35%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--vt-theme), var(--vt-theme-light));
    transition: width 0.18s ease, background 0.2s ease;
}

.vol-demo__osd.is-muted .vol-demo__fill { background: rgba(255, 255, 255, 0.25); }

/* Потолок громкости */
.vol-demo__cap {
    position: absolute;
    top: -4px;
    bottom: -4px;
    width: 2px;
    background: var(--vt-accent);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.vol-demo__cap.is-visible { opacity: 1; }

.vol-demo__value {
    flex-shrink: 0;
    min-width: 46px;
    text-align: right;
    font-size: 14px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    color: white;
}

/* Курсор */
.vol-demo__cursor {
    position: absolute;
    left: 50%;
    top: 40%;
    width: 22px;
    height: 22px;
    margin: -2px 0 0 -2px;
    color: white;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.6));
    transition: left 0.9s cubic-bezier(0.4, 0, 0.2, 1), top 0.9s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.vol-demo__cursor::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border-radius: 50%;
    border: 2px solid rgba(var(--vt-theme-rgb), 0.8);
    opacity: 0;
    transform: scale(0.4);
}

.vol-demo__cursor.is-clicked::after { animation: vol-click 0.5s ease-out; }

@keyframes vol-click {
    0% { opacity: 0.9; transform: scale(0.4); }
    100% { opacity: 0; transform: scale(1.4); }
}

/* Стрелка направления прокрутки */
.vol-demo__wheel {
    position: absolute;
    left: 24px;
    top: -2px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    opacity: 0;
    transition: opacity 0.15s ease;
    color: var(--vt-theme-light);
    font-size: 12px;
    font-weight: 700;
    line-height: 1;
}

.vol-demo__wheel.is-up,
.vol-demo__wheel.is-down { opacity: 1; }
.vol-demo__wheel.is-down { transform: rotate(180deg); }

/* Подпись под экраном */
.vol-demo__caption {
    margin-top: 22px;
    min-height: 52px;
    text-align: center;
    font-size: 15px;
    color: var(--vt-gray);
    line-height: 1.7;
}

.vol-demo__caption strong { color: var(--vt-theme-light); }

/* ——— Иконки карточек — тема ——— */
#features .feature-icon svg,
#privacy .feature-icon svg {
    color: var(--vt-theme);
    stroke: currentColor;
    fill: none;
}

/* ——— Карточки скачивания ——— */
.download-card h3 { color: var(--vt-theme); }
.download-card:hover { border-color: var(--vt-theme); box-shadow: 0 12px 32px rgba(var(--vt-theme-rgb), 0.25); }

.download-card__platform {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    padding: 4px 12px;
    border-radius: 50px;
    background: rgba(var(--vt-theme-rgb), 0.15);
    border: 1px solid rgba(var(--vt-theme-rgb), 0.35);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--vt-theme-light);
}

.download-card__platform--muted {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
    color: var(--vt-gray);
}

.download-note {
    margin-top: 24px;
    padding: 16px 20px;
    background: rgba(var(--vt-theme-rgb), 0.08);
    border-radius: 12px;
    color: var(--vt-gray);
    font-size: 14px;
}

.download-note code { color: var(--vt-theme-light); }

.instruction-card:hover { border-color: rgba(var(--vt-theme-rgb), 0.4); }

/* ——— Настройки: таблица ——— */
.settings-table { max-width: 860px; margin: 0 auto; }
.settings-table .table th { background: rgba(var(--vt-theme-rgb), 0.18); }
.settings-table .table td:first-child { color: var(--vt-light); font-weight: 600; white-space: nowrap; }

@media (max-width: 768px) {
    .vol-demo__screen { aspect-ratio: 4 / 3; }
    .vol-demo__osd { min-width: 0; left: 12px; right: 12px; transform: translate(0, 12px); }
    .vol-demo__osd.is-visible { transform: translate(0, 0); }
    .settings-table .table th,
    .settings-table .table td { padding: 10px 8px; font-size: 14px; }
    .settings-table .table td:first-child { white-space: normal; }
}