/* ============================================================
   Dawnmaker Material 3 Global Design System
   完整文件，可直接覆盖 / 新建
   ============================================================ */

/* === Design Tokens: Material 3 === */
:root {
    /* Colors */
    --dm-color-primary: #2563eb;
    --dm-color-primary-container: #dbeafe;
    --dm-color-on-primary: #ffffff;
    --dm-color-surface: #ffffff;
    --dm-color-surface-variant: #f3f4f6;
    --dm-color-background: #f9fafb;
    --dm-color-outline: #e5e7eb;
    --dm-color-outline-strong: #d1d5db;
    --dm-color-text: #111827;
    --dm-color-text-muted: #6b7280;
    --dm-color-error: #dc2626;

    /* Shape */
    --dm-radius-xs: 6px;
    --dm-radius-sm: 10px;
    --dm-radius-md: 14px;
    --dm-radius-lg: 18px;
    --dm-radius-pill: 999px;

    /* Elevation */
    --dm-elevation-1: 0 1px 3px rgba(15, 23, 42, 0.08);
    --dm-elevation-2: 0 4px 10px rgba(15, 23, 42, 0.10);
    --dm-elevation-3: 0 10px 25px rgba(15, 23, 42, 0.16);

    /* Spacing */
    --dm-space-1: 4px;
    --dm-space-2: 8px;
    --dm-space-3: 12px;
    --dm-space-4: 16px;
    --dm-space-5: 20px;
    --dm-space-6: 24px;
    --dm-space-8: 32px;

    /* Typography */
    --dm-font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
    --dm-font-size-xs: 12px;
    --dm-font-size-sm: 14px;
    --dm-font-size-md: 16px;
    --dm-font-size-lg: 18px;
    --dm-font-size-xl: 22px;
}

/* === Global Base === */
body {
    font-family: var(--dm-font-sans);
    color: var(--dm-color-text);
    background: var(--dm-color-background);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    color: var(--dm-color-text);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.dm-page-title {
    font-size: 28px;
    margin-bottom: var(--dm-space-5);
}

/* ============================================================
   Term Card (分类卡片)
   ============================================================ */

.dm-term-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--dm-space-5);
}

.dm-term-card {
    display: flex;
    flex-direction: column;
    background: var(--dm-color-surface);
    border-radius: var(--dm-radius-md);
    box-shadow: var(--dm-elevation-1);
    border: 1px solid var(--dm-color-outline);
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    transition:
        box-shadow 0.22s cubic-bezier(.2, .0, .2, 1),
        transform 0.22s cubic-bezier(.2, .0, .2, 1),
        border-color 0.22s cubic-bezier(.2, .0, .2, 1),
        background-color 0.22s cubic-bezier(.2, .0, .2, 1);
}

.dm-term-card:hover {
    box-shadow: var(--dm-elevation-2);
    transform: translateY(-2px);
    border-color: var(--dm-color-outline-strong);
    background-color: var(--dm-color-surface-variant);
}

.dm-term-card-thumb {
    position: relative;
    aspect-ratio: 4 / 3;
    background: linear-gradient(135deg, #e5e7eb, #f9fafb);
    overflow: hidden;
}

.dm-term-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.35s cubic-bezier(.2, .0, .2, 1);
}

.dm-term-card:hover .dm-term-card-thumb img {
    transform: scale(1.04);
}

.dm-term-card-thumb-fallback {
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 20%, #e5e7eb, #d1d5db);
}

.dm-term-card-body {
    padding: var(--dm-space-4);
}

.dm-term-card-title {
    font-size: var(--dm-font-size-md);
    margin: 0;
}

/* ============================================================
   Product Card (产品卡片)
   ============================================================ */

.dm-product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--dm-space-5);
}

.dm-product-card {
    display: flex;
    flex-direction: column;
    background: var(--dm-color-surface);
    border-radius: var(--dm-radius-md);
    box-shadow: var(--dm-elevation-1);
    border: 1px solid var(--dm-color-outline);
    overflow: hidden;
    transition:
        box-shadow 0.22s cubic-bezier(.2, .0, .2, 1),
        transform 0.22s cubic-bezier(.2, .0, .2, 1),
        border-color 0.22s cubic-bezier(.2, .0, .2, 1);
}

.dm-product-card:hover {
    box-shadow: var(--dm-elevation-2);
    transform: translateY(-2px);
    border-color: var(--dm-color-outline-strong);
}

.dm-product-thumb {
    display: block;
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #fff;
}

.dm-product-thumb img {
    width: 100%;
    height: 100%;

    display: block;

    transition: transform 0.35s cubic-bezier(.2, .0, .2, 1);
}

.dm-product-card:hover .dm-product-thumb img {
    transform: scale(1.04);
}

.dm-product-card-body {
    padding: var(--dm-space-4);
    display: flex;
    flex-direction: column;
    gap: var(--dm-space-3);
}

.dm-product-card-title {
    font-size: var(--dm-font-size-md);
    margin: 0;
}

.dm-product-card-title a {
    color: var(--dm-color-text);
    text-decoration: none;
}

.dm-product-card-title a:hover {
    text-decoration: underline;
}

.dm-product-card-desc {
    font-size: var(--dm-font-size-sm);
    color: var(--dm-color-text-muted);
}

/* ============================================================
   Buttons (Material 3)
   ============================================================ */

.dm-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0.55rem 1.2rem;
    border-radius: var(--dm-radius-pill);
    border: 1px solid transparent;
    font-size: var(--dm-font-size-sm);
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition:
        background-color 0.18s cubic-bezier(.2, .0, .2, 1),
        color 0.18s cubic-bezier(.2, .0, .2, 1),
        box-shadow 0.18s cubic-bezier(.2, .0, .2, 1),
        transform 0.12s cubic-bezier(.2, .0, .2, 1);
}

.dm-btn-dark {
    background: var(--dm-color-primary);
    color: var(--dm-color-on-primary);
    box-shadow: var(--dm-elevation-1);
}

.dm-btn-dark:hover {
    background: #1d4ed8;
    box-shadow: var(--dm-elevation-2);
    transform: translateY(-1px);
}

.dm-btn-dark:active {
    transform: translateY(0);
    box-shadow: var(--dm-elevation-1);
}

/* ============================================================
   Fade-in Motion (配合 JS)
   ============================================================ */

.dm-fade-in {
    opacity: 0;
    transform: translateY(10px);
    transition:
        opacity 0.6s cubic-bezier(.2, .0, .2, 1),
        transform 0.6s cubic-bezier(.2, .0, .2, 1);
}

.dm-fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}