/* ===================================
   作品集頁面樣式
   =================================== */

/* ===== 作品網格 ===== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    position: relative;
    z-index: 1;
}

/* ===== 作品項目 ===== */
.portfolio-item {
    opacity: 1;
    transform: scale(1);
    transition: all 0.5s ease;
}

.portfolio-item.hidden {
    opacity: 0;
    transform: scale(0.8);
    position: absolute;
    pointer-events: none;
}

/* ===== 作品卡片 ===== */
.portfolio-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.portfolio-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    z-index: 0;
}

.portfolio-card:hover {
    transform: translateY(-10px);
    border-color: var(--cyan);
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(0, 217, 255, 0.4);
}

.portfolio-card:hover::before {
    opacity: 1;
}

/* ===== 圖片區域 ===== */
.portfolio-image {
    position: relative;
    width: 100%;
    height: 320px;
    overflow: hidden;
    background: #060a12;
    border-bottom: 1px solid rgba(0, 217, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.portfolio-cover-blur-bg {
    position: absolute;
    inset: -15px;
    background-size: cover;
    background-position: center;
    filter: blur(25px) brightness(0.35) saturate(130%);
    transform: scale(1.15);
    pointer-events: none;
    z-index: 0;
}

.portfolio-img {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    padding: 0;
    transition: transform 0.6s cubic-bezier(0.33, 1, 0.68, 1);
}

.portfolio-card:hover .portfolio-img {
    transform: scale(1.04);
}

.default-portfolio-cover {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.08) 0%, rgba(15, 23, 42, 0.95) 100%);
    font-size: 3.5rem;
    color: rgba(0, 217, 255, 0.4);
}

/* ===== 內容區域 ===== */
.portfolio-content {
    padding: 24px 26px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
    position: relative;
    z-index: 1;
}

/* 🏷️ 方案 A：分類微光點膠囊（置頂） */
.portfolio-cat-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 2px;
}

.portfolio-cat-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.09);
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.3px;
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
}

.portfolio-cat-pill .pill-dot {
    width: 6.5px;
    height: 6.5px;
    border-radius: 50%;
    background-color: var(--pill-color, var(--cyan));
    box-shadow: 0 0 8px var(--pill-color, var(--cyan));
    display: inline-block;
}

.portfolio-cat-pill .pill-name {
    color: rgba(226, 232, 240, 0.9);
}

.portfolio-card:hover .portfolio-cat-pill {
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.07);
}

.portfolio-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.portfolio-logo {
    width: 42px;
    height: 42px;
    object-fit: contain;
    padding: 6px;
    background: rgba(15, 23, 42, 0.65);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 10px;
    box-shadow: 0 0 12px rgba(0, 217, 255, 0.15);
    flex-shrink: 0;
}

.portfolio-title {
    font-size: 19px;
    font-weight: 700;
    color: var(--white);
    margin: 0;
    flex: 1;
    line-height: 1.4;
    transition: color 0.3s ease;
    letter-spacing: 0.3px;
}

.portfolio-card:hover .portfolio-title {
    color: var(--cyan);
    text-shadow: 0 0 12px rgba(0, 217, 255, 0.5);
}

.portfolio-action-btn {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(0, 217, 255, 0.08);
    border: 1px solid rgba(0, 217, 255, 0.3);
    color: var(--cyan);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12.5px;
    text-decoration: none;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.portfolio-action-btn:hover {
    background: var(--cyan);
    color: #020617;
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.5);
    transform: scale(1.1);
}

.portfolio-description {
    font-size: 13.5px;
    line-height: 1.65;
    color: rgba(226, 232, 240, 0.75);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 🏷️ 方案 A：暗調微光標籤群組 */
.portfolio-tags-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 4px;
}

.portfolio-tag-chip {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 2px 9px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-tag-chip .tag-hash {
    color: var(--tag-color, var(--cyan));
    font-weight: 700;
    font-size: 10.5px;
}

.portfolio-tag-chip .tag-name {
    color: #94a3b8;
    transition: color 0.25s ease;
}

.portfolio-tag-chip:hover,
.portfolio-card:hover .portfolio-tag-chip {
    border-color: rgba(255, 255, 255, 0.16);
}

.portfolio-tag-chip:hover {
    border-color: var(--tag-color, var(--cyan));
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-1px);
}

.portfolio-tag-chip:hover .tag-name {
    color: #f1f5f9;
}

/* 💻 技術標籤列 */
.portfolio-tech-wrap {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.tech-wrap-label {
    font-size: 11px;
    font-weight: 600;
    color: rgba(148, 163, 184, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.tech-wrap-label i {
    color: var(--cyan);
    font-size: 10px;
}

.tech-chips-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.portfolio-tech-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3.5px 10px;
    background: rgba(0, 217, 255, 0.06);
    border: 1px solid rgba(0, 217, 255, 0.22);
    border-radius: 6px;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--cyan);
    letter-spacing: 0.3px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(4px);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-tech-chip i {
    font-size: 9.5px;
    color: rgba(0, 217, 255, 0.75);
    transition: transform 0.25s ease;
}

.portfolio-tech-chip:hover {
    background: rgba(0, 217, 255, 0.15);
    border-color: var(--cyan);
    box-shadow: 0 0 12px rgba(0, 217, 255, 0.35);
    color: #ffffff;
    transform: translateY(-1.5px);
}

.portfolio-tech-chip:hover i {
    transform: rotate(15deg) scale(1.1);
    color: #ffffff;
}

/* 🎨 顏色對應映射 */
[data-color="blue"]   { --pill-color: #38bdf8; --tag-color: #38bdf8; }
[data-color="cyan"]   { --pill-color: #00d9ff; --tag-color: #00d9ff; }
[data-color="green"]  { --pill-color: #22c55e; --tag-color: #22c55e; }
[data-color="orange"] { --pill-color: #fb923c; --tag-color: #fb923c; }
[data-color="red"]    { --pill-color: #f87171; --tag-color: #f87171; }
[data-color="purple"] { --pill-color: #c084fc; --tag-color: #c084fc; }
[data-color="yellow"] { --pill-color: #facc15; --tag-color: #facc15; }
[data-color="pink"]   { --pill-color: #f472b6; --tag-color: #f472b6; }
[data-color="gray"]   { --pill-color: #94a3b8; --tag-color: #94a3b8; }

/* ===================================
   響應式設計 (RWD)
   =================================== */

/* 平板 (768px - 1024px) */
@media (max-width: 992px) {
    .portfolio-layout {
        gap: 30px;
    }

    .filters-sidebar {
        width: 150px;
    }

    .filter-grid {
        grid-template-columns: repeat(1, 1fr);
    }

    .portfolio-grid {
        gap: 20px;
        grid-template-columns: repeat(1, 1fr);
    }

    .filter-btn {
        padding: 12px 16px;
        font-size: 13px;
    }
}

/* 小平板 / 大手機 (481px - 768px) */
@media (max-width: 768px) {
    .portfolio-layout {
        flex-direction: column;
        gap: 30px;
        margin-top: 30px;
    }

    .filters-sidebar {
        width: 100%;
        position: static;
    }

    .filter-grid {
        display: flex;
        flex-wrap: wrap;
        flex-direction: row;
    }

    .filter-btn {
        width: fit-content;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .portfolio-image {
        height: 240px;
    }

    .portfolio-content {
        padding: 20px;
    }
}

/* 手機 (最大 480px) */
@media (max-width: 480px) {
    .portfolio-layout {
        margin-top: 20px;
        gap: 20px;
    }

    .filter-section {
        margin-bottom: 20px;
    }

    .filter-title {
        font-size: 12px;
        margin-bottom: 10px;
    }

    .filter-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
    }

    .filter-btn {
        padding: 10px 14px;
        font-size: 12px;
    }

    .filter-btn-auto {
        padding: 6px 12px;
        font-size: 11px;
    }

    .portfolio-image {
        height: 200px;
    }

    .portfolio-content {
        padding: 15px;
        gap: 12px;
    }

    .portfolio-logo {
        width: 40px;
        height: 40px;
    }

    .portfolio-title {
        font-size: 16px;
    }

    .portfolio-description {
        font-size: 13px;
    }

    .tech-tag {
        padding: 4px 10px;
        font-size: 11px;
    }
}