/* 区块链证书列表（学生端 / 教师端查看学生证书共用） */
.blockchain-certs-page {
    padding-top: 20px;
    padding-bottom: 24px;
}

.blockchain-certs-page .certs-hero {
    margin-bottom: 24px;
    padding: 24px 28px;
    border-radius: 14px;
    background: linear-gradient(135deg, #0a2463 0%, #1e3a5f 50%, #2c5282 100%);
    color: #fff;
    box-shadow: 0 8px 32px rgba(10, 36, 99, 0.25);
}

.blockchain-certs-page .certs-hero h1 {
    margin: 0 0 8px;
    font-size: 24px;
    font-weight: 700;
}

.blockchain-certs-page .certs-hero p {
    margin: 0;
    opacity: 0.9;
    font-size: 14px;
}

.blockchain-certs-page .certs-hero .chain-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 14px;
    padding: 8px 14px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.15);
    font-size: 13px;
}

.blockchain-certs-page .cert-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 20px;
}

.blockchain-certs-page .cert-card {
    border: 1px solid rgba(10, 36, 99, 0.1);
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 4px 14px rgba(10, 36, 99, 0.06);
    overflow: hidden;
    transition: box-shadow 0.2s;
}

.blockchain-certs-page .cert-card:hover {
    box-shadow: 0 8px 24px rgba(10, 36, 99, 0.12);
}

.blockchain-certs-page .cert-card-header {
    display: flex;
    gap: 16px;
    padding: 18px 20px;
    border-bottom: 1px solid rgba(10, 36, 99, 0.08);
    background: #fafcff;
}

.blockchain-certs-page .cert-card-thumb {
    width: 80px;
    height: 80px;
    border-radius: 10px;
    background: #e8f1fc center/cover no-repeat;
    flex-shrink: 0;
}

.blockchain-certs-page .cert-card-title {
    font-size: 16px;
    font-weight: 700;
    color: #0f2f66;
    margin: 0 0 4px;
}

.blockchain-certs-page .cert-card-type {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
}

.blockchain-certs-page .cert-card-type.type-activity {
    background: rgba(245, 158, 11, 0.15);
    color: #b45309;
}

.blockchain-certs-page .cert-card-type.type-project {
    background: rgba(139, 92, 246, 0.15);
    color: #6d28d9;
}

.blockchain-certs-page .cert-card-type.type-course {
    background: rgba(62, 146, 204, 0.15);
    color: #1a5a8a;
}

.blockchain-certs-page .cert-card-type.type-challenge {
    background: rgba(34, 197, 94, 0.15);
    color: #15803d;
}

.blockchain-certs-page .cert-card-body {
    padding: 18px 20px;
}

.blockchain-certs-page .cert-card-body h3 {
    margin: 0 0 14px;
    font-size: 14px;
    color: #5a6c87;
    font-weight: 600;
}

.blockchain-certs-page .cert-essential {
    display: grid;
    gap: 8px;
    margin-bottom: 14px;
}

.blockchain-certs-page .cert-essential .row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    font-size: 13px;
}

.blockchain-certs-page .cert-essential .k {
    color: #667a98;
}

.blockchain-certs-page .cert-essential .v {
    color: #1f3557;
    font-weight: 600;
}

.blockchain-certs-page .cert-image-wrap {
    width: 100%;
    margin-bottom: 14px;
    border-radius: 10px;
    overflow: hidden;
    background: #f0f4f8;
}

.blockchain-certs-page .cert-image-wrap img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
}

.blockchain-certs-page .btn-more-info-wrap {
    text-align: center;
    margin-bottom: 16px;
}

.blockchain-certs-page .btn-more-info {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    color: #0e4d8a;
    background: #fff;
    border: 1px solid rgba(62, 146, 204, 0.35);
    cursor: pointer;
    transition: all 0.2s;
}

.blockchain-certs-page .btn-more-info:hover {
    background: rgba(62, 146, 204, 0.08);
    border-color: rgba(62, 146, 204, 0.5);
}

.blockchain-certs-page .cert-expand-wrap {
    display: none;
    margin-bottom: 16px;
}

.blockchain-certs-page .cert-expand-wrap.expanded {
    display: block;
}

.blockchain-certs-page .blockchain-info {
    display: grid;
    gap: 10px;
}

.blockchain-certs-page .blockchain-row {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 8px;
    background: #f8fbff;
    border: 1px solid rgba(62, 146, 204, 0.12);
    font-size: 13px;
}

.blockchain-certs-page .blockchain-row .label {
    flex-shrink: 0;
    color: #667a98;
    min-width: 72px;
}

.blockchain-certs-page .blockchain-row .value {
    color: #1f3557;
    font-weight: 600;
    word-break: break-all;
    font-family: ui-monospace, monospace;
}

.blockchain-certs-page .blockchain-row .value.hash {
    font-size: 11px;
}

.blockchain-certs-page .cert-meta-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    font-size: 13px;
}

.blockchain-certs-page .cert-meta-row:last-child {
    border-bottom: none;
}

.blockchain-certs-page .cert-meta-row .k {
    color: #667a98;
}

.blockchain-certs-page .cert-meta-row .v {
    color: #1f3557;
    font-weight: 600;
}

.blockchain-certs-page .cert-card-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(10, 36, 99, 0.08);
    background: #fafcff;
    text-align: center;
}

.blockchain-certs-page .btn-view-cert {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, #3e92cc 0%, #0a2463 100%);
    border: none;
    text-decoration: none;
    transition: all 0.2s;
}

.blockchain-certs-page .btn-view-cert:hover {
    opacity: 0.95;
    transform: translateY(-1px);
}

.blockchain-certs-page .certs-empty {
    text-align: center;
    padding: 60px 20px;
    color: #7b889e;
}

.blockchain-certs-page .certs-empty .icon {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
}

@media (max-width: 480px) {
    .blockchain-certs-page .cert-list {
        grid-template-columns: 1fr;
    }
}