/* ==========================================================================
   成功案例頁專屬樣式
   依賴 design-system.css 的 token
   ========================================================================== */

.ach-page {
    background: linear-gradient(180deg, #F8FAFC 0%, #EEF2F8 100%);
    padding: var(--spacing-16) 0 var(--spacing-20) 0;
    min-height: 70vh;
}

.ach-wrap {
    width: min(1200px, 92vw);
    margin: 0 auto;
}

/* === 頁首 === */
.ach-head-page {
    text-align: center;
    margin-bottom: var(--spacing-12);
}
.ach-head-page .ach-kicker {
    display: inline-block;
    font-family: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    color: var(--color-interactive);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    background: rgba(0, 102, 204, 0.08);
    margin-bottom: var(--spacing-4);
    text-transform: uppercase;
}
.ach-head-page h1 {
    font-family: var(--font-family-heading);
    font-size: clamp(1.8rem, 3.4vw, 2.6rem);
    color: var(--color-primary);
    margin: 0 0 var(--spacing-3) 0;
    font-weight: 700;
    letter-spacing: -0.01em;
}
.ach-head-page p {
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.7;
}

/* === Grid === */
.ach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-6);
}

/* === 案例卡 === */
.achievement-card {
    --tone-from: var(--color-primary);
    --tone-to: var(--color-primary-light, #1E4D9C);
    --tone-soft: rgba(10, 36, 99, 0.08);

    background: var(--color-surface);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(10, 36, 99, 0.06);
    border: 1px solid var(--color-gray-200);
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
                box-shadow 0.4s cubic-bezier(0.22, 1, 0.36, 1),
                border-color 0.4s;
    display: flex;
    flex-direction: column;
}
.achievement-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 50px rgba(10, 36, 99, 0.16);
    border-color: transparent;
}

/* === Category 色彩（5 個案例對應） === */
.achievement-card[data-category="流通業"] {
    --tone-from: #6D28D9;
    --tone-to: #EC4899;
    --tone-soft: rgba(168, 85, 247, 0.10);
}
.achievement-card[data-category="物流業"] {
    --tone-from: #C2410C;
    --tone-to: #FB8B24;
    --tone-soft: rgba(251, 139, 36, 0.10);
}
.achievement-card[data-category="製造業"] {
    --tone-from: #115E59;
    --tone-to: #10B981;
    --tone-soft: rgba(16, 185, 129, 0.10);
}
.achievement-card[data-category="台製人臉辨識"] {
    --tone-from: #991B1B;
    --tone-to: #DC2626;
    --tone-soft: rgba(220, 38, 38, 0.08);
}
.achievement-card[data-category="人臉辨識通關系統"] {
    --tone-from: #0A2463;
    --tone-to: #1E4D9C;
    --tone-soft: rgba(10, 36, 99, 0.08);
}

/* === 卡片頂部 header（有圖：圖當背景；沒圖：tone 漸層 fallback） === */
.ach-head {
    position: relative;
    padding: var(--spacing-6) var(--spacing-6);
    background: #0F1115;
    color: #fff;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--spacing-4);
}
/* 沒有圖時才用 tone 漸層底 */
.achievement-card:not([data-has-image]) .ach-head {
    background: linear-gradient(135deg, var(--tone-from) 0%, var(--tone-to) 100%);
}

/* 圖片當背景 */
.ach-head .ach-head-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.achievement-card:hover .ach-head-bg {
    transform: scale(1.05);
}

/* 有圖時：底部極淡漸層只是讓 label chip 不浮空，不蓋圖 */
.achievement-card[data-has-image] .ach-head::before {
    content: '';
    position: absolute;
    inset: auto 0 0 0;
    height: 45%;
    z-index: 1;
    background: linear-gradient(180deg,
        rgba(0, 0, 0, 0) 0%,
        rgba(0, 0, 0, 0.35) 100%);
    pointer-events: none;
}

/* 沒有圖時，用裝飾性紋路強化漸層底（避免太空） */
.achievement-card:not([data-has-image]) .ach-head::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 28px 28px;
    mask-image: radial-gradient(ellipse 80% 70% at 30% 80%, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 30% 80%, black 30%, transparent 80%);
    pointer-events: none;
}
.ach-head .ach-icon {
    position: absolute;
    top: var(--spacing-5);
    right: var(--spacing-5);
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.22);
    border: 1px solid rgba(255, 255, 255, 0.32);
    display: grid;
    place-items: center;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 2;
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.ach-head .ach-icon svg {
    width: 28px;
    height: 28px;
    color: #fff;
}
.achievement-card:hover .ach-head .ach-icon {
    transform: scale(1.05) rotate(-2deg);
}
.ach-head .ach-cat-label {
    position: relative;
    z-index: 2;
    font-family: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    color: rgba(255, 255, 255, 0.95);
    text-transform: uppercase;
    padding: 6px 12px;
    background: rgba(0, 0, 0, 0.32);
    border-radius: var(--radius-full);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
}
.ach-head .ach-cat-label::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: #fff;
    opacity: 0.85;
}

/* === 卡片本體 === */
.ach-body {
    padding: var(--spacing-6);
    display: flex;
    flex-direction: column;
    flex: 1;
}
.ach-body h3 {
    font-family: var(--font-family-heading);
    font-size: 1.2rem;
    color: var(--color-text-primary);
    font-weight: 700;
    margin: 0 0 var(--spacing-5) 0;
    line-height: 1.45;
    letter-spacing: -0.005em;
}

/* === Facts 三行式 === */
.ach-facts {
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}
.ach-facts > div {
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: var(--spacing-3);
    align-items: baseline;
    padding-bottom: var(--spacing-3);
    border-bottom: 1px dashed var(--color-gray-200);
}
.ach-facts > div:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.ach-facts dt {
    font-family: var(--font-family-heading);
    font-weight: 700;
    font-size: 0.82rem;
    color: var(--tone-from);
    background: var(--tone-soft);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    text-align: center;
    letter-spacing: 0.05em;
    white-space: nowrap;
    width: fit-content;
}
.ach-facts dd {
    margin: 0;
    color: var(--color-text-primary);
    font-size: 0.95rem;
    line-height: 1.65;
    font-weight: 500;
}

/* 「規模」那行用稍大字 + 主色加重視覺效果 */
.ach-facts > div[data-key="規模"] dd {
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--tone-from);
    font-family: var(--font-family-heading);
    letter-spacing: -0.01em;
}

/* === 響應式 === */
@media (max-width: 768px) {
    .ach-page { padding: var(--spacing-12) 0; }
    .ach-grid { grid-template-columns: 1fr; gap: var(--spacing-5); }
    .ach-head { padding: var(--spacing-5); }
    .ach-head .ach-icon { width: 48px; height: 48px; top: var(--spacing-4); right: var(--spacing-4); }
    .ach-head .ach-icon svg { width: 24px; height: 24px; }
    .ach-body { padding: var(--spacing-5); }
    .ach-body h3 { font-size: 1.1rem; }
    .ach-facts > div { grid-template-columns: 50px 1fr; }
}

/* === Reduced motion === */
@media (prefers-reduced-motion: reduce) {
    .achievement-card,
    .achievement-card .ach-head-bg,
    .achievement-card .ach-icon { transition: none; animation: none; }
    .achievement-card:hover { transform: none; }
    .achievement-card:hover .ach-head-bg { transform: none; }
    .achievement-card:hover .ach-head .ach-icon { transform: none; }
}