/* Tailwind 補充：Alpine.js 用 collapse / accordion、翻牌、進度圓餅、按鈕圖示 */
:root {
    --main-color: #1749FF;
    --sub-color: #FFDF7C;
    --fc-blue: #0D6FF4;
    --fc-yellow: #FFDF7C;
}

/* Alpine.js cloak - 防止載入前閃爍 */
[x-cloak] {
    display: none !important;
}

/* ========== Alpine.js Collapse / Accordion 樣式 ========== */
.accordion-collapse {
    transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
}

/* 手機選單展開樣式 */
.navbar-collapse {
    flex-direction: column;
}

@media (min-width: 1024px) {
    .navbar-collapse {
        display: flex !important;
        flex-direction: row;
    }
}

/* Accordion 按鈕：可點擊、箭頭圖示 */
.accordion-button {
    cursor: pointer;
    display: flex;
    align-items: center;
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    text-align: left;
    border: none;
    background: #f2f2f2;
    border-radius: 12px;
}

.accordion-button:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(23, 73, 255, 0.25);
}

.accordion-button:not(.collapsed) {
    border-radius: 12px 12px 0 0;
}

.accordion-button::after {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    margin-left: auto;
    content: "";
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23212529'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-size: 1.25rem;
    transition: transform 0.2s ease;
}

.accordion-button:not(.collapsed)::after {
    transform: rotate(-180deg);
}

/* 首屏背景（路徑相對於 CSS 檔：assets/css → assets/images） */
#main {
    background-image: linear-gradient(to top, #1e61b0, rgba(30, 30, 30, 0) 40%),
        url(https://edm.bnext.com.tw/meet/expo/aitaiwai/assets/images/main-bg.jpg);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

.list-item01 {
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.8)), url(https://edm.bnext.com.tw/meet/expo/aitaiwai/assets/images/list-item_01.jpg);
    background-size: cover;
    background-position: center;
    color: white;
}

.list-item02 {
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.8)), url(https://edm.bnext.com.tw/meet/expo/aitaiwai/assets/images/list-item_02.jpg);
    background-size: cover;
    background-position: center;
    color: white;
}

/* 精準觀展 TA 圓餅圖（JS 繪製 canvas） */
#progress ul {
    padding: 0;
    row-gap: 1.5rem;
    column-gap: 1.5rem;
}

#progress .chart {
    width: 150px;
    height: 150px;
    margin: 0 10px;
    position: relative;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-content: center;
    font-size: 36px;
    font-family: "Oswald", serif;
    font-weight: 600;
    color: var(--main-color);
}

#progress .chart span {
    position: absolute;
    font-size: 16px;
    font-weight: 300;
    width: 160%;
    bottom: -40px;
    font-family: 'Noto Sans TC', sans-serif;
    color: #1e1e1e;
}

#progress .chart canvas {
    position: absolute;
    left: 0;
    top: 0;
}

@media (max-width: 768px) {
    #progress ul {
        row-gap: 4rem;
        margin-top: 70px;
    }

    #progress .chart span {
        width: 100%;
        top: -50px;
        bottom: auto;
    }
}

/* 講師輪播 Owl 按鈕覆寫 */
#speaker4 .owl-theme .owl-nav {
    position: absolute;
    width: 100%;
    justify-content: flex-end;
}

#speaker4 .owl-carousel .owl-nav button.owl-next,
#speaker4 .owl-carousel .owl-nav button.owl-prev {
    background: transparent !important;
    color: var(--main-color);
    width: 30px;
    height: 30px;
    margin: 0;
    border-radius: 0;
    font-size: 1.25rem;
}

#speaker4 .owl-carousel .owl-nav button.owl-next:hover,
#speaker4 .owl-carousel .owl-nav button.owl-prev:hover {
    background: var(--sub-color) !important;
}

/* 展區 flip 卡 3D */
#sec-07 .flip-card {
    perspective: 1000px;
}

#sec-07 .flip-card-inner {
    transform-style: preserve-3d;
    transition: transform .6s;
    backface-visibility: hidden;
}

#sec-07 .flip-card-front,
#sec-07 .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}

#sec-07 .flip-card-back {
    transform: rotateY(180deg);
}

#sec-07 .flip-card:focus .flip-card-inner,
#sec-07 .flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}

/* 回到頂部按鈕 */
/* FAQ accordion 與 Bootstrap JS 相容 */
#FAQ .accordion-button:not(.collapsed) {
    color: #1e1e1e;
    background-color: #f2f2f2;
    border-radius: 12px 12px 0 0;
}

#FAQ .accordion-button {
    background-color: #f2f2f2;
    border-radius: 12px;
}

#FAQ .accordion-body {
    padding: 1% 2% 0.5% 2%;
    background-color: #f2f2f2;
    border-radius: 0 0 12px 12px;
}

#footer .scrolltop {
    position: fixed;
    bottom: 7.5%;
    right: 2%;
    width: 55px;
    height: 55px;
    display: none;
    z-index: 50;
    border-radius: 9999px;
}

#footer .scrolltop:not([style*="display: none"]) {
    display: flex !important;
    align-items: center;
    justify-content: center;
}

@media (max-width: 1023px) {
    #footer .scrolltop {
        bottom: 90px;
    }
}