/**
 * ICC-Service — Sticky Sidebar (Липкая боковая панель)
 *
 * Стилизованная боковая панель с иконками быстрого доступа.
 * Появляется при скролле вместе с липким хедером.
 *
 * Цвета берутся из CSS custom properties (Customizer):
 *   --icc-ssb-accent   : акцентный цвет (#0097a7)
 *   --icc-ssb-bg       : фон панели (#0a1628)
 *
 * @version 1.0.0
 */

/* ============================================
   1. CONTAINER
   ============================================ */
.icc-sticky-sidebar {
    --_accent: var(--icc-ssb-accent, #0097a7);
    --_bg: var(--icc-ssb-bg, #0a1628);
    --_size: 52px;         /* icon button size */
    --_gap: 6px;           /* gap between items */
    --_radius: 16px;       /* container border radius */
    --_item-radius: 14px;  /* button border radius */

    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%) translateX(0);
    z-index: 99998;
    display: flex;
    flex-direction: column;
    gap: var(--_gap);
    padding: 8px 6px;
    background: var(--_bg);
    background: linear-gradient(
        145deg,
        color-mix(in srgb, var(--_bg) 90%, white 10%),
        var(--_bg) 60%,
        color-mix(in srgb, var(--_bg) 95%, var(--_accent) 5%)
    );
    border-radius: var(--_radius) 0 0 var(--_radius);
    box-shadow:
        -4px 0 24px rgba(0, 0, 0, 0.25),
        -1px 0 0 rgba(255, 255, 255, 0.06) inset,
        0 1px 0 rgba(255, 255, 255, 0.04) inset;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-right: none;
    transition: transform 0.45s cubic-bezier(0.23, 1, 0.32, 1),
                opacity 0.35s ease;
    will-change: transform, opacity;
}

/* ── Hidden state (scroll-linked) ────────── */
.icc-sticky-sidebar.icc-ssb-on-scroll {
    transform: translateY(-50%) translateX(calc(100% + 10px));
    opacity: 0;
    pointer-events: none;
}

.icc-sticky-sidebar.icc-ssb-on-scroll.is-visible {
    transform: translateY(-50%) translateX(0);
    opacity: 1;
    pointer-events: auto;
}

/* ── Always visible ──────────────────────── */
.icc-sticky-sidebar.icc-ssb-always {
    transform: translateY(-50%) translateX(0);
    opacity: 1;
}

/* ============================================
   2. NAV
   ============================================ */
.icc-ssb-nav {
    display: flex;
    flex-direction: column;
    gap: var(--_gap);
}

/* ============================================
   3. ITEM (link button)
   ============================================ */
.icc-ssb-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--_size);
    height: var(--_size);
    border-radius: var(--_item-radius);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    overflow: visible;
    outline: none;
}

.icc-ssb-item:hover,
.icc-ssb-item:focus-visible {
    background: var(--_accent);
    border-color: var(--_accent);
    color: #fff;
    transform: translateX(-4px) scale(1.08);
    box-shadow:
        0 0 18px color-mix(in srgb, var(--_accent) 40%, transparent),
        0 4px 12px rgba(0, 0, 0, 0.3);
}

.icc-ssb-item:active {
    transform: translateX(-2px) scale(1.02);
    transition-duration: 0.1s;
}

/* Hide text label — shown only in tooltip */
.icc-ssb-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

/* ============================================
   4. ICON
   ============================================ */
.icc-ssb-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    line-height: 1;
    transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.icc-ssb-item:hover .icc-ssb-icon {
    transform: scale(1.15);
}

/* ============================================
   5. TOOLTIP (on hover)
   ============================================ */
.icc-ssb-item::after {
    content: attr(data-tooltip);
    position: absolute;
    right: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%) translateX(8px);
    padding: 6px 14px;
    background: var(--_bg);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    white-space: nowrap;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.08);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all 0.25s cubic-bezier(0.23, 1, 0.32, 1);
    z-index: 1;
}

/* Tooltip arrow */
.icc-ssb-item::before {
    content: '';
    position: absolute;
    right: calc(100% + 4px);
    top: 50%;
    transform: translateY(-50%) translateX(8px);
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 6px solid var(--_bg);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all 0.25s cubic-bezier(0.23, 1, 0.32, 1);
    z-index: 1;
}

.icc-ssb-item:hover::after,
.icc-ssb-item:focus-visible::after {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

.icc-ssb-item:hover::before,
.icc-ssb-item:focus-visible::before {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

/* ============================================
   6. BRAND COLORS PER ITEM
   ============================================ */
.icc-ssb-item--catalog:hover,
.icc-ssb-item--catalog:focus-visible {
    background: var(--_accent);
    border-color: var(--_accent);
}

.icc-ssb-item--contacts:hover,
.icc-ssb-item--contacts:focus-visible {
    background: #0097a7;
    border-color: #0097a7;
}

.icc-ssb-item--callback:hover,
.icc-ssb-item--callback:focus-visible {
    background: #e91e63;
    border-color: #e91e63;
}

.icc-ssb-item--whatsapp:hover,
.icc-ssb-item--whatsapp:focus-visible {
    background: #25d366;
    border-color: #25d366;
}

.icc-ssb-item--telegram:hover,
.icc-ssb-item--telegram:focus-visible {
    background: #2aabee;
    border-color: #2aabee;
}

/* ============================================
   7. STAGGER ANIMATION on appear
   ============================================ */
.icc-ssb-on-scroll.is-visible .icc-ssb-item {
    animation: icc-ssb-pop 0.4s cubic-bezier(0.23, 1, 0.32, 1) both;
}

.icc-ssb-on-scroll.is-visible .icc-ssb-item:nth-child(1) { animation-delay: 0.05s; }
.icc-ssb-on-scroll.is-visible .icc-ssb-item:nth-child(2) { animation-delay: 0.1s; }
.icc-ssb-on-scroll.is-visible .icc-ssb-item:nth-child(3) { animation-delay: 0.15s; }
.icc-ssb-on-scroll.is-visible .icc-ssb-item:nth-child(4) { animation-delay: 0.2s; }
.icc-ssb-on-scroll.is-visible .icc-ssb-item:nth-child(5) { animation-delay: 0.25s; }

@keyframes icc-ssb-pop {
    0% {
        opacity: 0;
        transform: translateX(20px) scale(0.8);
    }
    100% {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

/* ============================================
   8. PULSE animation for callback
   ============================================ */
.icc-ssb-item--callback .icc-ssb-icon {
    animation: icc-ssb-pulse 2.5s ease-in-out infinite;
}

@keyframes icc-ssb-pulse {
    0%, 100% { transform: scale(1); }
    50%      { transform: scale(1.12); }
}

/* ============================================
   9. GLOW RING — subtle permanent glow
   ============================================ */
.icc-sticky-sidebar::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--_radius) 0 0 var(--_radius);
    background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--_accent) 20%, transparent) 0%,
        transparent 40%,
        transparent 60%,
        color-mix(in srgb, var(--_accent) 15%, transparent) 100%
    );
    z-index: -1;
    opacity: 0.5;
    pointer-events: none;
    transition: opacity 0.3s;
}

.icc-sticky-sidebar:hover::after {
    opacity: 0.8;
}

/* ============================================
   10. RESPONSIVE
   ============================================ */

/* Tablet — slightly smaller */
@media (max-width: 1024px) {
    .icc-sticky-sidebar {
        --_size: 46px;
        --_gap: 5px;
        padding: 6px 5px;
    }

    .icc-ssb-icon {
        font-size: 18px;
    }
}

/* Mobile — bottom bar instead of side panel */
@media (max-width: 768px) {
    .icc-sticky-sidebar {
        position: fixed;
        right: auto;
        left: 0;
        top: auto;
        bottom: 0;
        transform: translateY(0) translateX(0) !important;
        flex-direction: row;
        justify-content: center;
        width: 100%;
        border-radius: 16px 16px 0 0;
        padding: 8px 12px;
        gap: 4px;
        box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.3);
        border: 1px solid rgba(255, 255, 255, 0.06);
        border-bottom: none;
    }

    .icc-sticky-sidebar.icc-ssb-on-scroll {
        transform: translateY(100%) !important;
        opacity: 0;
    }

    .icc-sticky-sidebar.icc-ssb-on-scroll.is-visible {
        transform: translateY(0) !important;
        opacity: 1;
    }

    .icc-ssb-nav {
        flex-direction: row;
        gap: 4px;
        flex-wrap: nowrap;
        justify-content: center;
        width: 100%;
    }

    .icc-ssb-item {
        --_size: 46px;
        flex: 1;
        max-width: 64px;
        border-radius: 12px;
    }

    .icc-ssb-icon {
        font-size: 18px;
    }

    /* Tooltips above on mobile */
    .icc-ssb-item::after {
        right: auto;
        left: 50%;
        top: auto;
        bottom: calc(100% + 12px);
        transform: translateX(-50%) translateY(8px);
    }

    .icc-ssb-item::before {
        right: auto;
        left: 50%;
        top: auto;
        bottom: calc(100% + 4px);
        transform: translateX(-50%) translateY(8px);
        border-left: 6px solid transparent;
        border-right: 6px solid transparent;
        border-top: 6px solid var(--_bg);
        border-bottom: none;
    }

    .icc-ssb-item:hover::after,
    .icc-ssb-item:focus-visible::after {
        transform: translateX(-50%) translateY(0);
    }

    .icc-ssb-item:hover::before,
    .icc-ssb-item:focus-visible::before {
        transform: translateX(-50%) translateY(0);
    }

    /* Stagger: horizontal */
    .icc-ssb-on-scroll.is-visible .icc-ssb-item {
        animation-name: icc-ssb-pop-mobile;
    }

    @keyframes icc-ssb-pop-mobile {
        0% {
            opacity: 0;
            transform: translateY(20px) scale(0.8);
        }
        100% {
            opacity: 1;
            transform: translateY(0) scale(1);
        }
    }

    /* Glow ring — adjust for bottom bar */
    .icc-sticky-sidebar::after {
        border-radius: 16px 16px 0 0;
    }
}

/* ============================================
   11. REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .icc-sticky-sidebar,
    .icc-ssb-item,
    .icc-ssb-icon,
    .icc-ssb-item::after,
    .icc-ssb-item::before {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}

/* ============================================
   12. PRINT — hide sidebar
   ============================================ */
@media print {
    .icc-sticky-sidebar {
        display: none !important;
    }
}