/* ==========================================================================
   products.css  —  產品頁樣式（對應 products.html / products.js）
   ========================================================================== */

/* ---------- 頁首 ------------------------------------------------------ */
.page-hero {
    padding: calc(var(--nav-h) + 96px) 0 80px;
    background: transparent;
}
.page-hero__title {
    font-size: clamp(44px, 8vw, 96px);
    font-weight: 800;
    line-height: 0.96;
    letter-spacing: -0.04em;
}
.page-hero__sub {
    max-width: 560px;
    margin-top: 28px;
    font-size: clamp(17px, 2vw, 21px);
    color: var(--muted);
}

/* ---------- 分類篩選列（黏性） --------------------------------------- */
.filter-bar {
    position: sticky;
    top: var(--nav-h);
    z-index: 500;
    background: rgba(245,245,247,0.6);   /* 半透明工具列，仍看得到後方網格 */
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    padding: 14px 0;
}
.filter { display: flex; gap: 8px; flex-wrap: wrap; }
.filter__btn {
    font-size: 14px;
    font-weight: 500;
    color: var(--c-slate);
    padding: 8px 18px;
    border-radius: 980px;
    border: 1px solid transparent;
    transition: all 0.25s var(--ease);
}
.filter__btn:hover { color: var(--c-ink); background: var(--c-fog); }
.filter__btn.is-active {
    color: var(--c-paper);
    background: var(--c-ink);
    border-color: var(--c-ink);
}

/* ---------- 產品格 ---------------------------------------------------- */
.catalog { background: transparent; padding-top: 64px; }
.catalog__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.prod {
    display: flex;
    flex-direction: column;
    cursor: pointer;
    transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}
/* 篩選淡出 */
.prod.is-hidden {
    display: none;
}

.prod__vis {
    position: relative;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius);
    background: transparent;
    border: 1px solid var(--line);
    display: grid;
    place-items: center;
    overflow: hidden;
    transition: transform 0.4s var(--ease), border-color 0.4s var(--ease);
}
.prod:hover .prod__vis { transform: translateY(-6px); border-color: var(--c-ink); }
.prod__vis--dark { background: transparent; border-color: var(--line); }

.prod__price {
    position: absolute;
    top: 16px; right: 16px;
    font-size: 13px; font-weight: 700;
    padding: 6px 12px; border-radius: 980px;
    background: rgba(255,255,255,0.82);
    color: var(--c-ink);
    z-index: 2;
}
.prod__vis--dark .prod__price { background: rgba(255,255,255,0.82); color: var(--c-ink); }

.prod__meta { padding: 20px 4px 0; }
.prod__cat {
    font-size: 12px; font-weight: 700; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--c-silver);
}
.prod__meta h3 { font-size: 21px; font-weight: 700; margin: 8px 0 6px; }
.prod__meta p { font-size: 14px; color: var(--muted); line-height: 1.55; }

/* 產品視覺內的包豪斯幾何 */
.pg { display: block; transition: transform 0.5s var(--ease); }
.prod:hover .pg { transform: scale(1.08) rotate(6deg); }
.pg-square { width: 46%; height: 46%; background: var(--c-mist); }
.prod__vis--dark .pg-square { background: #2c2c2e; }
.pg-rot { transform: rotate(45deg); }
.prod:hover .pg-rot { transform: rotate(52deg) scale(1.06); }
.pg-circle { width: 52%; aspect-ratio: 1; border-radius: 50%; background: var(--c-silver); }
.pg-ring { width: 52%; aspect-ratio: 1; border-radius: 50%; border: 22px solid #2c2c2e; }
.pg-tri {
    width: 0; height: 0;
    border-left: 60px solid transparent;
    border-right: 60px solid transparent;
    border-bottom: 104px solid var(--c-mist);
}
.pg-halfcircle {
    width: 52%; aspect-ratio: 2 / 1;
    background: #2c2c2e;
    border-radius: 999px 999px 0 0;
}

.catalog__empty {
    text-align: center;
    color: var(--muted);
    padding: 60px 0;
    font-size: 16px;
}

/* ---------- CTA（共用於本頁） ---------------------------------------- */
.cta { background: transparent; padding: 120px 0; }
.cta .cta__inner {          /* 加高權重，確保覆蓋滿版的 .wrap */
    text-align: center;
    max-width: 720px;
    margin-inline: auto;    /* 置中 */
    padding: 72px 40px;
    background: transparent;
    border-radius: 28px;
    border: 1px solid var(--c-ink);
}
.cta__inner h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 700; letter-spacing: -0.02em; }
.cta__inner p { color: var(--muted); margin: 16px 0 32px; font-size: 18px; }

/* ---------- 響應式 ---------------------------------------------------- */
@media (max-width: 860px) {
    .catalog__grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (max-width: 520px) {
    .catalog__grid { grid-template-columns: 1fr; }
}