/**
 * Floating Contact Widget - Phong Cách Phật Giáo Chùa Tam Bảo
 * Flat Buddhist Design - Không dùng gradient, không box-shadow nổi
 */

.floating-contact {
    position: fixed;
    right: 22px;
    bottom: 70px;
    z-index: 99999; /* Luôn hiển thị trên cùng */
    display: flex;
    flex-direction: column;
    align-items: center;
    user-select: none;
    -webkit-user-select: none;
    pointer-events: none; /* KHÔNG chặn click vào các nút bên dưới (như nút #go-top) */
}

/* Danh sách nút con dạng cột hướng lên */
.floating-contact-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column-reverse; /* Nút gần nhất ở đáy, nổi dần lên trên */
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    pointer-events: none;
}

/* Từng nút con trong danh sách */
.floating-contact .floating-item {
    position: relative;
    opacity: 0;
    visibility: hidden;
    transform: translateY(22px) scale(0.6);
    pointer-events: none;
    transition: opacity 0.24s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.24s cubic-bezier(0.4, 0, 0.2, 1),
                visibility 0.24s ease;
}

/* Trạng thái mở menu: các nút nổi dần lên như cánh hoa sen bung nở */
.floating-contact.is-open .floating-contact-list {
    pointer-events: auto;
}

.floating-contact.is-open .floating-item {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.floating-contact.is-open .floating-btn {
    pointer-events: auto;
}

/* Staggered delay: Tỏa lên lần lượt từng nút từ dưới lên (hỗ trợ tới 12 kênh liên hệ) */
.floating-contact.is-open .floating-item:nth-child(1)  { transition-delay: 0.02s; }
.floating-contact.is-open .floating-item:nth-child(2)  { transition-delay: 0.04s; }
.floating-contact.is-open .floating-item:nth-child(3)  { transition-delay: 0.06s; }
.floating-contact.is-open .floating-item:nth-child(4)  { transition-delay: 0.08s; }
.floating-contact.is-open .floating-item:nth-child(5)  { transition-delay: 0.10s; }
.floating-contact.is-open .floating-item:nth-child(6)  { transition-delay: 0.12s; }
.floating-contact.is-open .floating-item:nth-child(7)  { transition-delay: 0.14s; }
.floating-contact.is-open .floating-item:nth-child(8)  { transition-delay: 0.16s; }
.floating-contact.is-open .floating-item:nth-child(9)  { transition-delay: 0.18s; }
.floating-contact.is-open .floating-item:nth-child(10) { transition-delay: 0.20s; }
.floating-contact.is-open .floating-item:nth-child(11) { transition-delay: 0.22s; }
.floating-contact.is-open .floating-item:nth-child(12) { transition-delay: 0.24s; }
.floating-contact.is-open .floating-item:nth-child(13) { transition-delay: 0.26s; }
.floating-contact.is-open .floating-item:nth-child(14) { transition-delay: 0.28s; }
.floating-contact.is-open .floating-item:nth-child(15) { transition-delay: 0.30s; }

/* Reverse delay khi thu gọn lại */
.floating-contact:not(.is-open) .floating-item:nth-child(15) { transition-delay: 0.01s; }
.floating-contact:not(.is-open) .floating-item:nth-child(14) { transition-delay: 0.01s; }
.floating-contact:not(.is-open) .floating-item:nth-child(13) { transition-delay: 0.01s; }
.floating-contact:not(.is-open) .floating-item:nth-child(12) { transition-delay: 0.01s; }
.floating-contact:not(.is-open) .floating-item:nth-child(11) { transition-delay: 0.02s; }
.floating-contact:not(.is-open) .floating-item:nth-child(10) { transition-delay: 0.03s; }
.floating-contact:not(.is-open) .floating-item:nth-child(9)  { transition-delay: 0.04s; }
.floating-contact:not(.is-open) .floating-item:nth-child(8)  { transition-delay: 0.05s; }
.floating-contact:not(.is-open) .floating-item:nth-child(7)  { transition-delay: 0.06s; }
.floating-contact:not(.is-open) .floating-item:nth-child(6)  { transition-delay: 0.07s; }
.floating-contact:not(.is-open) .floating-item:nth-child(5)  { transition-delay: 0.08s; }
.floating-contact:not(.is-open) .floating-item:nth-child(4)  { transition-delay: 0.09s; }
.floating-contact:not(.is-open) .floating-item:nth-child(3)  { transition-delay: 0.10s; }
.floating-contact:not(.is-open) .floating-item:nth-child(2)  { transition-delay: 0.11s; }
.floating-contact:not(.is-open) .floating-item:nth-child(1)  { transition-delay: 0.12s; }

/* Vòng tròn nút con (Contact circular button) */
.floating-contact .floating-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background-color: var(--color-wood, #2A1810); /* Nền nâu gỗ trầm thiền môn */
    color: var(--color-gold, #D9A953); /* Biểu tượng SVG vàng kim */
    border: 2px solid var(--color-gold, #D9A953); /* Viền vàng kim */
    text-decoration: none;
    pointer-events: none; /* Mặc định không nhận click khi đang đóng */
    transition: background-color 0.22s ease,
                border-color 0.22s ease,
                color 0.22s ease,
                transform 0.2s ease;
    cursor: pointer;
    outline: none;
    box-shadow: none;
}

.floating-contact .floating-btn:hover,
.floating-contact .floating-btn:focus {
    background-color: var(--color-maroon, #88241C); /* Nâu đỏ chu sa trang trọng */
    border-color: var(--color-saffron, #DE7B24); /* Viền vàng nghệ */
    color: var(--color-cream, #FAF6EF); /* SVG chuyển sang trắng ngà thanh khiết */
    transform: scale(1.1);
}

.floating-contact .floating-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.floating-contact .contact-svg {
    display: block;
    transition: transform 0.2s ease;
    pointer-events: none;
}

.floating-contact .floating-btn:hover .contact-svg {
    transform: scale(1.08);
}

/* Tooltip bên trái: Phong cách Thẻ Mộc Kinh Thư */
.floating-contact .floating-tooltip {
    position: absolute;
    right: calc(100% + 14px);
    top: 50%;
    transform: translateY(-50%) translateX(8px);
    background-color: var(--color-wood, #2A1810); /* Nâu gỗ trầm thiền tự */
    color: var(--color-cream, #FAF6EF); /* Chữ vàng ngà */
    font-size: 13px;
    font-weight: 500;
    font-family: 'Montserrat', sans-serif;
    padding: 7px 14px;
    border-radius: 4px;
    white-space: nowrap;
    border: 1px solid var(--color-gold, #D9A953); /* Chỉ vàng kim */
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
    line-height: 1.4;
    box-shadow: none;
}

.floating-contact .floating-tooltip .tt-dharma {
    color: var(--color-gold, #D9A953);
    margin-right: 6px;
    font-size: 14px;
    display: inline-block;
    vertical-align: -1px;
}

.floating-contact .floating-tooltip strong {
    color: var(--color-gold, #D9A953);
    font-weight: 600;
}

/* Mũi tên tooltip hướng sang nút tròn */
.floating-contact .floating-tooltip::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -6px;
    transform: translateY(-50%);
    border-width: 6px 0 6px 6px;
    border-style: solid;
    border-color: transparent transparent transparent var(--color-wood, #2A1810);
}

.floating-contact .floating-btn:hover .floating-tooltip,
.floating-contact .floating-btn:focus .floating-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

/* NÚT TRÒN CHÍNH (1) - LOGO HEADER CHÙA TAM BẢO */
.floating-contact .floating-main-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background-color: #FFFFFF; /* Nền trắng tinh khôi làm nổi bật logo chùa */
    border: 2.5px solid var(--color-gold, #D9A953); /* Viền vàng kim Phật giáo */
    cursor: pointer;
    outline: none;
    box-shadow: none;
    padding: 0;
    pointer-events: auto; /* Luôn nhận click cho nút chính */
    transition: background-color 0.24s ease,
                border-color 0.24s ease,
                transform 0.2s ease;
}

.floating-contact .floating-main-btn:hover {
    background-color: var(--color-cream, #FAF6EF);
    border-color: var(--color-saffron, #DE7B24);
    transform: scale(1.06);
}

.floating-contact .floating-logo-img {
    display: block;
    max-width: 40px;
    max-height: 40px;
    width: auto;
    height: auto;
    object-fit: contain;
    pointer-events: none;
    transition: transform 0.24s ease;
}

.floating-contact .floating-main-btn:hover .floating-logo-img {
    transform: scale(1.08);
}

/* Chuyển đổi giữa Đóa Sen Vàng và Nút Đóng */
.floating-contact .icon-closed,
.floating-contact .icon-opened {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    transition: transform 0.24s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.22s ease;
}

.floating-contact .icon-closed {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

.floating-contact .icon-opened {
    opacity: 0;
    transform: scale(0.4) rotate(-90deg);
    font-size: 34px;
    line-height: 1;
    font-weight: 300;
    color: var(--color-gold, #D9A953);
}

/* Khi đang mở */
.floating-contact.is-open .floating-main-btn {
    background-color: var(--color-wood, #2A1810);
    border-color: var(--color-gold, #D9A953);
}

.floating-contact.is-open .icon-closed {
    opacity: 0;
    transform: scale(0.4) rotate(90deg);
}

.floating-contact.is-open .icon-opened {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

/* Hiệu ứng gợn sóng nước thiền (Zen Wave Ripple) phẳng khi nút đóng */
.floating-contact:not(.is-open) .floating-main-btn::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    border: 1.5px solid var(--color-gold, #D9A953);
    opacity: 0.7;
    animation: zenLotusAura 2.6s infinite ease-out;
    pointer-events: none;
}

@keyframes zenLotusAura {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    60% {
        transform: scale(1.22);
        opacity: 0;
    }
    100% {
        transform: scale(1.22);
        opacity: 0;
    }
}

/* Tối ưu hiển thị cho màn hình di động */
@media (max-width: 767px) {
    .floating-contact {
        right: 16px;
        bottom: 66px;
    }
    .floating-contact .floating-contact-list {
        gap: 8px;
        margin-bottom: 10px;
    }
    .floating-contact .floating-logo-img {
        max-width: 35px;
        max-height: 35px;
    }
    .floating-contact .floating-btn {
        width: 38px;
        height: 38px;
    }
    .floating-contact .contact-svg {
        width: 17px;
        height: 17px;
    }
    /* Ẩn tooltip trên màn hình cảm ứng để tránh che khuất */
    .floating-contact .floating-tooltip {
        display: none !important;
    }
}