/* ===================================
   项目案例页专属样式 - cases.css
   青岛青铜器科技有限公司 BROIT
   依赖：common.css / subpage.css（.btn / .section / .section-title /
        .container / .subcta / .page-banner / .footer / .navbar 已在公共文件定义）
   =================================== */

/* ============ 区块A：数据总览 ============ */
.case-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 26px;
}

.case-stat {
    text-align: center;
    padding: 44px 24px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    transition: all 0.35s ease;
}

.case-stat:hover {
    background: rgba(187, 27, 33, 0.12);
    border-color: rgba(187, 27, 33, 0.4);
    transform: translateY(-6px);
}

.case-stat strong {
    display: block;
    font-size: 50px;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 14px;
    font-family: "Arial Black", Arial, sans-serif;
    background: linear-gradient(135deg, var(--brand-gold), #e3cf9c);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--brand-gold);
}

.case-stat strong i {
    font-size: 19px;
    font-style: normal;
    font-weight: 700;
    margin-left: 3px;
    -webkit-text-fill-color: var(--brand-gold);
}

.case-stat span {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.72);
}

/* ============ 区块B：案例分组 ============ */
.case-group {
    margin-bottom: 56px;
}

.case-group:last-child {
    margin-bottom: 0;
}

.case-group-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 28px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.case-group-bar {
    width: 6px;
    height: 26px;
    border-radius: 3px;
    flex-shrink: 0;
}

.case-group-head h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
}

.case-group-count {
    margin-left: auto;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-light);
    background: var(--bg-light);
    padding: 5px 14px;
    border-radius: 20px;
}

/* ============ 案例卡片网格 ============ */
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}

.case-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 38px var(--shadow-medium);
    border-color: transparent;
}

/* 顶图卡片 */
.case-card-img {
    position: relative;
    height: 188px;
    overflow: hidden;
    background: var(--bg-light);
}

.case-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.case-card.has-img:hover .case-card-img img {
    transform: scale(1.06);
}

.case-card-img .case-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
}

.case-card-body {
    padding: 24px 22px 26px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.case-card-body h4 {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.case-client {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--brand-red);
    margin-bottom: 10px;
}

.case-desc {
    font-size: 14px;
    line-height: 1.75;
    color: var(--text-medium);
    margin-top: auto;
}

/* 纯文字卡片：标签在正文内联展示 */
.case-card-body .case-tag {
    align-self: flex-start;
    margin-bottom: 14px;
}

/* 可点击放大的真实截图：放大镜光标 + 悬停提示 */
.case-card-img[data-lightbox] { cursor: zoom-in; }

.case-card-img[data-lightbox]::after {
    content: '点击查看大图';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    padding: 8px 14px;
    font-size: 12.5px;
    letter-spacing: 1px;
    color: #ffffff;
    text-align: center;
    background: linear-gradient(0deg, rgba(0,0,0,0.55), transparent);
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.case-card-img[data-lightbox]:hover::after {
    opacity: 1;
    transform: translateY(0);
}

/* 无截图项目：领域色渐变占位头（与有图卡片等高，杜绝空白假象） */
.case-card-ph {
    position: relative;
    height: 188px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    overflow: hidden;
}

.case-card-ph::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 72% 22%, rgba(255,255,255,0.18), transparent 52%),
        repeating-linear-gradient(45deg, rgba(255,255,255,0.04) 0 12px, transparent 12px 24px);
}

.case-card-ph .case-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    background: rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(2px);
}

.case-card-ph .ph-icon {
    position: relative;
    z-index: 2;
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-card-ph .ph-icon svg {
    width: 100%;
    height: 100%;
    fill: #ffffff;
    opacity: 0.92;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.28));
    transition: transform 0.4s ease;
}

.case-card:hover .case-card-ph .ph-icon svg { transform: scale(1.1); }

.case-card-ph .ph-label {
    position: relative;
    z-index: 2;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 3px;
    color: rgba(255, 255, 255, 0.92);
    text-transform: uppercase;
}

/* 领域渐变配色 */
.ph-energy   { background: linear-gradient(135deg, #1a1a1a 0%, #951116 100%); }
.ph-rail     { background: linear-gradient(135deg, #0a2a4a 0%, #009ac0 100%); }
.ph-ocean    { background: linear-gradient(135deg, #06384f 0%, #0a7fa0 100%); }
.ph-meter    { background: linear-gradient(135deg, #2a2317 0%, #c0a062 100%); }
.ph-industry { background: linear-gradient(135deg, #1a1a1a 0%, #444444 100%); }
.ph-agri     { background: linear-gradient(135deg, #1f3a1a 0%, #4a8a3a 100%); }

/* ============ 领域标签配色 ============ */
.case-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    padding: 5px 12px;
    border-radius: 5px;
    color: #ffffff;
}

.tag-energy   { background: var(--brand-red); }
.tag-rail     { background: var(--tech-blue); }
.tag-ocean    { background: #0a6e8c; }
.tag-meter    { background: var(--brand-gold); }
.tag-industry { background: #444444; }
.tag-agri     { background: #4a8a3a; }

/* ============ 区块C：荣誉与奖项 ============ */
.award-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}

.award-item {
    display: flex;
    align-items: stretch;
    gap: 22px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--brand-red);
    border-radius: 10px;
    padding: 24px 26px;
    transition: all 0.35s ease;
}

.award-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 32px var(--shadow-light);
}

.award-year {
    flex-shrink: 0;
    min-width: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 800;
    font-family: "Arial Black", Arial, sans-serif;
    color: var(--brand-red);
    border-right: 1px solid var(--border-color);
    padding-right: 22px;
}

.award-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.award-body h4 {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.award-body p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-medium);
}

/* 发明专利项：金色强调，跨整行突出 */
.award-patent {
    grid-column: 1 / -1;
    border-left-color: var(--brand-gold);
    background: linear-gradient(120deg, #fffdf8 0%, var(--bg-white) 60%);
}

.award-patent .award-year {
    color: var(--brand-gold);
    font-size: 18px;
}

/* ============ 响应式 ============ */
@media (max-width: 992px) {
    .case-stats { grid-template-columns: repeat(2, 1fr); }
    .case-stat strong { font-size: 44px; }
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .case-group-head h3 { font-size: 21px; }
}

@media (max-width: 768px) {
    .case-stats { grid-template-columns: 1fr 1fr; gap: 16px; }
    .case-stat { padding: 32px 16px; }
    .case-stat strong { font-size: 38px; }
    .case-stat span { font-size: 13.5px; }

    .case-grid { grid-template-columns: 1fr; }
    .case-group { margin-bottom: 44px; }
    .case-group-head { flex-wrap: wrap; }
    .case-group-count { margin-left: 0; }

    .award-list { grid-template-columns: 1fr; }
    .award-item { gap: 16px; padding: 20px; }
    .award-year { min-width: 52px; padding-right: 16px; font-size: 19px; }
    .award-body h4 { font-size: 15px; }
}