/* =========================================================
   NTUB EMBA 校友會 - Home Index (Final, Structured)
   Author: Crystal
   Notes:
   - 依 SECTION 結構化分類
   - 大畫面(≥992px) / 中畫面(768–991px) / 小畫面(<768px) 全覆蓋
   - 延續原檔 token 與既有組件（carousel/news/gallery/sponsor）
   ========================================================= */


/* =========================================================
   0) 色票與通用 Token
   ========================================================= */
:root {
    --alumni-primary: #6B46C1;
    --alumni-grad-main: linear-gradient(135deg,#8B5CF6,#A855F7);
    --alumni-grad-accent: linear-gradient(135deg,#7C3AED,#8B5CF6);
    --alumni-grad-deep: linear-gradient(135deg,#9333EA,#7C3AED);
    --card-bg: rgba(255,255,255,.92);
    --card-border: rgba(155,89,182,.18);
    --card-shadow: 0 8px 24px rgba(155,89,182,.12),0 3px 10px rgba(107,70,193,.08);
    --radius-lg: 16px;
}


/* =========================================================
   1) 全域標題與文字樣式（含漸層標題）
   ========================================================= */
/* Fallback：就算不支援漸層文字也可讀 */
.section-title {
    font-size: clamp(1.75rem,1.2rem + 1.2vw,2.25rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: .6rem;
    color: var(--alumni-primary,#6B46C1);
}

.section-subtitle {
    font-size: 1rem;
    line-height: 1.6;
    color: #6c757d;
    margin-bottom: 1rem;
}

/* 強韌版漸層文字 */
h1.section-title.text-gradient,
h2.section-title.text-gradient,
.section-title.text-gradient {
    background-image: linear-gradient(135deg,#F97316 0%,#EA580C 40%,#8B5CF6 100%);
    background-size: 100%;
    background-repeat: no-repeat;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent !important;
    -webkit-text-fill-color: transparent !important;
    display: inline-block;
}

/* 深色模式副標微亮 */
@media (prefers-color-scheme: dark) {
    .section-subtitle {
        color: #c7c7c7;
    }
}


/* =========================================================
   2) Hero / Carousel（沿用並微調）
   ========================================================= */
.enhanced-carousel-btn {
    background: rgba(0,0,0,.4) !important;
    border-radius: 50% !important;
    width: 50px !important;
    height: 50px !important;
    box-shadow: 0 4px 15px rgba(0,0,0,.3) !important;
    transition: background .3s,box-shadow .3s,border-color .3s !important;
    border: 2px solid rgba(255,255,255,.3) !important;
    backdrop-filter: blur(10px) !important;
    position: absolute !important;
}

    .enhanced-carousel-btn:hover {
        background: rgba(142,68,173,.8) !important;
        box-shadow: 0 8px 25px rgba(142,68,173,.4) !important;
        border-color: rgba(255,255,255,.6) !important;
    }

    .enhanced-carousel-btn:focus {
        box-shadow: 0 0 0 .25rem rgba(142,68,173,.25) !important;
    }

    .enhanced-carousel-btn .carousel-control-prev-icon,
    .enhanced-carousel-btn .carousel-control-next-icon {
        filter: drop-shadow(1px 1px 2px rgba(0,0,0,.5));
    }

.carousel-caption {
    opacity: 0 !important;
    transition: opacity .3s !important;
}

.carousel:hover .carousel-caption {
    opacity: 1 !important;
}

.hero-viewport {
    position: relative;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    filter: blur(12px) brightness(.65);
    transform: scale(1.08);
}

.hero-img {
    position: relative;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    pointer-events: none;
}

.carousel-item, .carousel-item > a {
    height: 100%;
}

.hero-caption {
    pointer-events: none;
    text-shadow: 2px 2px 8px rgba(0,0,0,.85);
    font-weight: 700;
    background: rgba(0,0,0,.38);
    padding: .5rem 1rem;
    border-radius: 10px;
    backdrop-filter: blur(5px);
}


/* =========================================================
   3) About Section（容器、價值卡、委員會清單、媒體）
   ========================================================= */
.about-section {
    padding: 3rem 0;
    margin: 2rem 0;
    border-radius: 2rem;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(155,89,182,.06) 0%, rgba(107,70,193,.10) 50%, rgba(139,92,246,.08) 100%);
    border: 1px solid var(--card-border);
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(6px);
}

/* 3.1 核心價值卡 */
.value-card {
    background: var(--card-bg);
    border: 2px solid var(--card-border);
    border-radius: 16px;
    padding: 1.25rem 1.25rem 1rem;
    box-shadow: 0 4px 16px rgba(155,89,182,.10);
    transition: transform .25s, box-shadow .25s;
    height: 100%;
}

    .value-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 28px rgba(155,89,182,.14);
    }

.value-head {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin-bottom: .5rem;
}

.value-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
    box-shadow: 0 4px 12px rgba(139,92,246,.30);
    background: linear-gradient(135deg,#8B5CF6,#A855F7);
}

    .value-icon.alt {
        background: linear-gradient(135deg,#7C3AED,#8B5CF6);
    }

.value-title {
    margin: 0;
    font-size: 1.1rem;
    color: var(--alumni-primary);
    font-weight: 700;
}

/* 3.2 委員會清單（ul 語義保留 + Grid） */
.about-section .committee-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr; /* 小：1 欄 */
}


@media (min-width:992px) {
    .about-section .committee-list {
        grid-template-columns: repeat(3, minmax(0,1fr));
    }
    /* 大：3 欄 */
}

/* 卡片 */
.about-section .committee-card {
    display: flex;
    align-items: flex-start;
    gap: .875rem;
    width: 100%;
    height: 100%;
    text-decoration: none;
    color: inherit;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    padding: 1rem 1.2rem;
    box-shadow: 0 4px 16px rgba(0,0,0,.05);
    transition: border-color .2s, box-shadow .2s, transform .2s, background-color .2s;
}

    .about-section .committee-card:hover,
    .about-section .committee-card:focus-visible {
        transform: translateY(-2px);
        border-color: rgba(155,89,182,.35);
        box-shadow: 0 12px 28px rgba(0,0,0,.10);
        outline: none;
    }

.about-section .committee-icon {
    flex: 0 0 auto;
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.15rem;
    background: var(--alumni-grad-main);
    box-shadow: 0 4px 12px rgba(139,92,246,.28);
}

    .about-section .committee-icon.alt {
        background: var(--alumni-grad-accent);
        box-shadow: 0 4px 12px rgba(236,72,153,.28);
    }

    .about-section .committee-icon.deep {
        background: var(--alumni-grad-deep);
        box-shadow: 0 4px 12px rgba(59,130,246,.28);
    }

.about-section .committee-body {
    min-width: 0;
}

.about-section .committee-title {
    font-size: 1.05rem;
    font-weight: 800;
    margin: .125rem 0 .25rem;
    color: var(--alumni-primary);
}

.about-section .committee-desc {
    margin: 0;
    color: #6c757d;
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 3.3 圖片媒體（避免過高） */
.about-section .about-media img {
    width: 100%;
    height: auto;
    border-radius: .75rem;
    display: block;
}


/* =========================================================
   4) Services Section（6 卡 / CSS Grid）
   ========================================================= */
.services-section {
    padding: 3rem 0;
    margin: 2rem 0;
    border-radius: 2rem;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(249,115,22,.08) 0%, rgba(234,88,12,.12) 50%, rgba(194,65,12,.10) 100%);
    border: 1px solid rgba(249,115,22,.15);
    box-shadow: 0 10px 35px rgba(249,115,22,.15), 0 3px 10px rgba(234,88,12,.10);
}
/* Grid：小 1 欄 / 中 2 欄 / 大 3 欄 */
.services-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(1, minmax(0,1fr));
}

@media (min-width:768px) {
    .services-grid {
        grid-template-columns: repeat(2, minmax(0,1fr));
    }
}

@media (min-width:992px) {
    .services-grid {
        grid-template-columns: repeat(3, minmax(0,1fr));
    }
}

/* 卡片 */
.service-card {
    background: rgba(255,255,255,.95);
    border: 1px solid rgba(249,115,22,.20);
    border-radius: 1.5rem;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    text-align: center;
    box-shadow: 0 4px 16px rgba(0,0,0,.04);
    transition: transform .25s, box-shadow .25s, border-color .25s;
}

    .service-card:hover,
    .service-card:focus-within {
        transform: translateY(-3px);
        box-shadow: 0 16px 36px rgba(0,0,0,.10);
        border-color: rgba(249,115,22,.35);
    }

.service-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    transition: transform .25s, box-shadow .25s;
}

.service-card:hover .service-icon {
    transform: translateY(-2px);
}

.service-title {
    margin: 1rem 0 .75rem;
    font-weight: 700;
}

.service-desc {
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

/* 按鈕 */
.btn-pill {
    border: none;
    border-radius: 9999px;
    padding: .5rem 1.2rem;
    font-weight: 600;
    color: #fff;
    transition: transform .2s, box-shadow .2s;
}

    .btn-pill:hover {
        transform: translateY(-1px);
        box-shadow: 0 8px 20px rgba(0,0,0,.12);
    }

/* 色系（與原版一致） */
.si-green {
    background: linear-gradient(135deg,#10B981,#059669);
    box-shadow: 0 4px 15px rgba(16,185,129,.3);
}

.st-green {
    color: #047857;
}

.sd-green {
    color: #065F46;
}

.btn-green {
    background: linear-gradient(135deg,#10B981,#059669);
}

.si-pink {
    background: linear-gradient(135deg,#EC4899,#DB2777);
    box-shadow: 0 4px 15px rgba(236,72,153,.3);
}

.st-pink {
    color: #BE185D;
}

.sd-pink {
    color: #9D174D;
}

.btn-pink {
    background: linear-gradient(135deg,#EC4899,#DB2777);
}

.si-amber {
    background: linear-gradient(135deg,#F59E0B,#D97706);
    box-shadow: 0 4px 15px rgba(245,158,11,.3);
}

.st-amber {
    color: #B45309;
}

.sd-amber {
    color: #92400E;
}

.btn-amber {
    background: linear-gradient(135deg,#F59E0B,#D97706);
}

.si-orange {
    background: linear-gradient(135deg,#F97316,#EA580C);
    box-shadow: 0 4px 15px rgba(249,115,22,.3);
}

.st-orange {
    color: #C2410C;
}

.sd-orange {
    color: #9A3412;
}

.btn-orange {
    background: linear-gradient(135deg,#F97316,#EA580C);
}

.si-blue {
    background: linear-gradient(135deg,#3B82F6,#1D4ED8);
    box-shadow: 0 4px 15px rgba(59,130,246,.3);
}

.st-blue {
    color: #1E40AF;
}

.sd-blue {
    color: #1E3A8A;
}

.btn-blue {
    background: linear-gradient(135deg,#3B82F6,#1D4ED8);
}

.si-violet {
    background: linear-gradient(135deg,#8B5CF6,#A855F7);
    box-shadow: 0 4px 15px rgba(139,92,246,.3);
}

.st-violet {
    color: #6B46C1;
}

.sd-violet {
    color: #553C9A;
}

.btn-violet {
    background: linear-gradient(135deg,#8B5CF6,#A855F7);
}


/* =========================================================
   5) News/Gallery（沿用並整理）
   ========================================================= */
.news-card {
    transition: all .3s ease;
}

    .news-card:hover {
        transform: scale(1.02);
        box-shadow: 0 .5rem 1rem rgba(155,89,182,.15) !important;
        border-color: rgba(155,89,182,.3) !important;
    }

    .news-card .read-more {
        transition: all .3s ease;
    }

    .news-card:hover .read-more {
        color: #8E44AD !important;
        transform: scale(1.05);
    }

.gallery-card {
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    position: relative;
    box-shadow: 0 .125rem .25rem rgba(0,0,0,.075);
    transition: all .4s cubic-bezier(.4,0,.2,1);
    background: linear-gradient(135deg, rgba(255,255,255,.95) 0%, rgba(248,244,255,.9) 100%);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(139,95,191,.1);
}

    .gallery-card:hover {
        transform: scale(1.03);
        box-shadow: 0 1rem 3rem rgba(155,89,182,.175) !important;
        border-color: rgba(155,89,182,.25);
        filter: brightness(1.05);
    }

.gallery-image {
    position: relative;
    overflow: hidden;
}

    .gallery-image img {
        width: 100%;
        height: 120px;
        transition: transform .4s ease;
    }

.gallery-card:hover .gallery-image img {
    transform: scale(1.05);
}

.gallery-category {
    position: absolute;
    top: .5rem;
    left: .5rem;
    padding: .3rem .6rem;
    background: linear-gradient(135deg, rgba(155,89,182,.9), rgba(142,68,173,.9));
    color: #fff;
    border-radius: 12px;
    font-size: .7rem;
    font-weight: 600;
    z-index: 4;
    backdrop-filter: blur(10px);
}

.gallery-category-icon {
    position: absolute;
    top: .5rem;
    right: .5rem;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: .9rem;
    z-index: 3;
    box-shadow: 0 4px 12px rgba(0,0,0,.15);
}


/* =========================================================
   6) Sponsor 區（等寬排、響應式）
   ========================================================= */
#sponsorRow1.sponsor-grid {
    display: grid;
    gap: .75rem;
    grid-template-columns: repeat(7, minmax(120px,1fr));
    margin: 0 auto .75rem;
}

#sponsorRow2.sponsor-grid {
    --gap: .75rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--gap);
    margin: 0 auto;
}

.sponsor-grid > .sponsor-col {
    flex: 0 0 calc((100% - (6 * var(--gap)))/7);
    max-width: calc((100% - (6 * var(--gap)))/7);
    min-width: 0;
}

/* md: 4 欄 */
@media (max-width:1200px) {
    #sponsorRow1.sponsor-grid, #sponsorRow2.sponsor-grid {
        display: flex !important;
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
        max-width: 100%;
    }

        #sponsorRow1.sponsor-grid > .sponsor-col,
        #sponsorRow2.sponsor-grid > .sponsor-col {
            flex: 0 0 calc((100% - (3 * 12px))/4) !important;
            max-width: calc((100% - (3 * 12px))/4) !important;
        }
}



@media (max-width:380px) {
    #sponsorRow1.sponsor-grid, #sponsorRow2.sponsor-grid {
        gap: 12px;
    }

        #sponsorRow1.sponsor-grid > .sponsor-col,
        #sponsorRow2.sponsor-grid > .sponsor-col {
            flex: 0 0 calc((100% - 12px)/2) !important;
            max-width: calc((100% - 12px)/2) !important;
        }
}

/* =========================================================
   7) 通用按鈕互動增強
   ========================================================= */
.btn {
    transition: all .3s cubic-bezier(.4,0,.2,1) !important;
    position: relative !important;
    overflow: hidden !important;
}

    .btn:hover {
        transform: translateY(-2px) scale(1.05) !important;
        box-shadow: 0 8px 25px rgba(0,0,0,.15) !important;
        filter: brightness(1.1) saturate(1.1) !important;
    }

    .btn:active {
        transform: translateY(0) scale(.98) !important;
        transition: all .1s ease !important;
    }

    .btn::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        border-radius: 50%;
        background: rgba(255,255,255,.3);
        transform: translate(-50%,-50%);
        transition: width .6s, height .6s;
        z-index: 0;
    }

    .btn:hover::before {
        width: 300px;
        height: 300px;
    }

    .btn > * {
        position: relative;
        z-index: 1;
    }

.service-card .btn:hover {
    transform: translateY(-3px) scale(1.08) !important;
    box-shadow: 0 12px 30px rgba(0,0,0,.2) !important;
}


/* =========================================================
   8) RWD：中畫面（768–991px）
   - 關於圖片縮放 / 標題字級微調 / value-card 留白
   ========================================================= */
@media (min-width:768px) and (max-width:991px) {
    .section-title {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .about-section .about-media img {
        max-width: 80%;
        margin: 0 auto;
        height: 320px;
        object-fit: cover;
        object-position: center;
        border-radius: .9rem;
    }

    .value-card {
        padding: 1.2rem 1rem;
    }

        .value-card p {
            font-size: .95rem;
        }
}


/* =========================================================
   9) RWD：小畫面（<768px）
   - 縮短頁長 / 卡片更緊湊 / 圖片裁切
   ========================================================= */
@media (max-width:576px) {
    .section-title {
        font-size: 1.35rem;
        margin-bottom: .4rem;
    }

    .section-subtitle {
        font-size: .92rem;
    }

    .about-section, .services-section, .sponsors-section {
        margin: 1.25rem 0;
        padding: 2rem 0;
        border-radius: 1rem;
    }

    /* Services 更緊湊 */
    .service-card {
        padding: 1.1rem 1rem;
        border-radius: 1rem;
    }

    .service-icon {
        width: 52px;
        height: 52px;
        font-size: 1.25rem;
    }

    .service-title {
        font-size: 1rem;
        margin: .6rem 0 .35rem;
    }

    .service-desc {
        margin-bottom: .9rem;
        font-size: .95rem;
    }

    .btn-pill {
        padding: .45rem 1rem;
        font-weight: 600;
        font-size: .95rem;
    }

    /* About 媒體圖：限制高度並裁切 */
    .about-section .about-media img {
        width: 100%;
        height: 260px;
        object-fit: cover;
        object-position: center;
        border-radius: .9rem;
    }

    /* Committee 更精簡 */
    .about-section .committee-list {
        gap: .75rem;
    }

    .about-section .committee-card {
        padding: .85rem .9rem;
        border-radius: .9rem;
        box-shadow: 0 6px 18px rgba(0,0,0,.06);
    }

    .about-section .committee-icon {
        width: 46px;
        height: 46px;
        font-size: 1rem;
        border-radius: 10px;
    }

    .about-section .committee-title {
        font-size: .98rem;
        margin: .1rem 0 .15rem;
    }

    .about-section .committee-desc {
        -webkit-line-clamp: 2;
        font-size: .94rem;
    }
}

/* 576–768：過渡微調 */
@media (min-width:576px) and (max-width:768px) {
    .about-section .about-media img {
        height: 320px;
        object-fit: cover;
    }

    .service-card {
        padding: 1.25rem 1.15rem;
    }
}

/* 超小螢幕可選：隱藏 About 圖片以縮短頁長 */

@media (max-width:400px){
  .about-section .about-media{ display:none; }
}




.sponsor-item:hover {
    box-shadow: 0 0.8rem 1.5rem rgba(155, 89, 182, 0.2) !important;
    border-color: rgba(155, 89, 182, 0.4) !important;
    filter: brightness(1.08) saturate(1.05);
    background: linear-gradient(135deg, rgba(255,255,255,0.98), rgba(248,250,252,0.95));
}

    .sponsor-item:hover .position-badge {
        filter: brightness(1.1) contrast(1.05);
        box-shadow: 0 0.4rem 0.8rem rgba(142, 68, 173, 0.3) !important;
        border-color: rgba(142, 68, 173, 0.6);
    }

/* 彈窗樣式增強 - 使用Bootstrap 5陰影效果 */
.detail-item:hover {
    transform: scale(1.01);
    box-shadow: 0 0.25rem 0.5rem rgba(155, 89, 182, 0.15) !important;
    background: rgba(255, 255, 255, 0.95) !important;
    filter: brightness(1.02);
}

.modal-content .btn-close:hover {
    transform: scale(1.1);
    opacity: 1;
}





/* 統一所有卡片樣式 - 扁平化設計 */
.sponsor-col {
    flex: 0 0 auto;
    min-width: 155px !important;
}

.sponsor-item {
    max-width: 135px;
    min-height: 180px !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
     padding: 1.2rem 1rem !important; 
    background: white !important;
    border-radius: 12px !important;
    box-shadow: 0 4px 15px rgba(155, 89, 182, 0.12) !important;
    border: 2px solid rgba(155, 89, 182, 0.2) !important;
    cursor: pointer !important;
    transition: all 0.3s ease !important;
    text-align: center !important;
}

.position-badge {
    background: #9B59B6;
    color: white;
    padding: 0.15rem 0.4rem;
    border-radius: 6px;
    white-space: nowrap;
    padding: 0.4rem 1rem !important;
    border-radius: 20px !important;
    font-size: 0.9rem !important;
    font-weight: 600 !important;
    margin-bottom: 1rem !important;
    display: inline-block !important;
    margin: 0 auto 1rem auto !important;
}

.sponsor-name {
    font-weight: 700 !important;
    margin-bottom: 0.5rem !important;
    font-size: 1.5rem !important;
    text-align: center !important;
    line-height: 1.2 !important;
}

.sponsor-item .sponsor-company {
    font-size: 0.8rem !important;
    margin-bottom: 1rem !important;
    line-height: 1.3 !important;
    text-align: center !important;
    opacity: 0.8 !important;
}

.sponsor-item .sponsor-action-cta {
    background: rgba(155, 89, 182, 0.08) !important;
    padding: 0.6rem 0.8rem !important;
    border-radius: 8px !important;
    text-align: center !important;
    border: 1px dashed rgba(155, 89, 182, 0.3) !important;
    color: #9B59B6 !important;
    font-weight: 600 !important;
    font-size: 0.8rem !important;
    transition: all 0.3s ease !important;
    margin-top: auto !important;
}





@media (max-width: 575px) {
   

    .modal-dialog {
        margin: 1rem;
    }

    .modal-header {
        padding: 1.5rem !important;
    }

    .modal-body {
        padding: 1.5rem !important;
    }

    #sponsorModalAvatar {
        width: 60px !important;
        height: 60px !important;
        font-size: 1.5rem !important;
    }

    .modal-title {
        font-size: 1.2rem !important;
    }
}