/* ========================================
   COMPONENTS — Unitree-Inspired
   ======================================== */

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-family: var(--font-family);
    font-size: var(--fs-caption);
    font-weight: var(--fw-semibold);
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    border: 1.5px solid transparent;
    border-radius: 9999px;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: var(--color-white);
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

.btn-outline-light {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: var(--blur-glass);
    -webkit-backdrop-filter: var(--blur-glass);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.6);
    color: var(--color-white);
}

.btn-outline-dark {
    background: transparent;
    color: var(--color-text-dark);
    border-color: var(--color-text-dark);
}

.btn-outline-dark:hover {
    background: var(--color-text-dark);
    color: var(--color-white);
}

.btn-ghost {
    background: transparent;
    color: var(--color-accent);
    border-color: transparent;
    padding: 8px 0;
    letter-spacing: normal;
    text-transform: none;
    font-size: var(--fs-body);
}

.btn-ghost::after {
    content: '›';
    font-size: 18px;
    transition: transform var(--transition-fast);
}

.btn-ghost:hover::after {
    transform: translateX(4px);
}

.btn-ghost:hover {
    color: var(--color-accent-hover);
}

.btn-lg {
    padding: 16px 40px;
    font-size: 15px;
}

/* ---- Product Card (Unitree grid style) ---- */
.product-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    cursor: pointer;
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.product-card .card-image {
    padding: var(--space-lg) var(--space-md);
    background: var(--color-light);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 280px;
    overflow: hidden;
}

.product-card .card-image img {
    max-height: 220px;
    width: auto;
    object-fit: contain;
    transition: transform var(--transition-slow);
}

.product-card:hover .card-image img {
    transform: scale(1.05);
}

.product-card .card-body {
    padding: var(--space-md) var(--space-md) var(--space-lg);
}

.product-card .card-tagline {
    font-size: var(--fs-caption);
    color: var(--color-text-muted);
    font-weight: var(--fw-medium);
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    margin-bottom: 4px;
}

.product-card .card-name {
    font-size: var(--fs-h3);
    font-weight: var(--fw-extrabold);
    color: var(--color-text-dark);
    margin-bottom: var(--space-xs);
    letter-spacing: var(--ls-tight);
}

.product-card .card-desc {
    font-size: var(--fs-caption);
    color: var(--color-text-muted);
    line-height: 1.5;
    margin-bottom: var(--space-sm);
}

.product-card .card-link {
    font-size: var(--fs-caption);
    color: var(--color-accent);
    font-weight: var(--fw-semibold);
}

/* ---- News Card ---- */
.news-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-white);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    cursor: pointer;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.news-card .news-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.news-card .news-body {
    padding: var(--space-md);
}

.news-card .news-date {
    font-size: var(--fs-small);
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.news-card .news-title {
    font-size: var(--fs-body);
    font-weight: var(--fw-semibold);
    color: var(--color-text-dark);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---- Case Card ---- */
.case-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    height: 360px;
}

.case-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.case-card:hover img {
    transform: scale(1.05);
}

.case-card .case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-lg) var(--space-md);
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--color-white);
}

.case-card .case-category {
    font-size: var(--fs-small);
    font-weight: var(--fw-semibold);
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 4px;
}

.case-card .case-title {
    font-size: var(--fs-body-lg);
    font-weight: var(--fw-bold);
    color: var(--color-white);
}

/* ---- Tags / Filters ---- */
.filter-bar {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: var(--space-xl);
}

.filter-btn {
    padding: 8px 20px;
    font-size: var(--fs-caption);
    font-weight: var(--fw-medium);
    border: 1px solid var(--color-light-alt);
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-family);
}

.filter-btn:hover {
    border-color: var(--color-text-dark);
    color: var(--color-text-dark);
}

.filter-btn.active {
    background: var(--color-text-dark);
    color: var(--color-white);
    border-color: var(--color-text-dark);
}

/* ---- Feature Card (Software) ---- */
.feature-card {
    text-align: center;
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    background: var(--color-dark-card);
    border: 1px solid var(--color-dark-border);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: border-color var(--transition-base), transform var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.feature-card .feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    background: var(--color-accent-glow);
    border-radius: var(--radius-md);
}

.feature-card h4 {
    color: var(--color-white);
    font-size: var(--fs-body);
    font-weight: var(--fw-semibold);
    margin-bottom: var(--space-xs);
}

.feature-card p {
    font-size: var(--fs-caption);
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.5;
}

/* ---- Pricing Card ---- */
.pricing-card {
    background: var(--color-dark-card);
    border: 1px solid var(--color-dark-border);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    transition: border-color var(--transition-base);
}

.pricing-card.featured {
    border-color: var(--color-accent);
    position: relative;
}

.pricing-card.featured::before {
    content: '推荐';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: white;
    padding: 4px 16px;
    border-radius: var(--radius-full);
    font-size: var(--fs-small);
    font-weight: var(--fw-semibold);
}

.pricing-card h3 {
    font-size: var(--fs-h3);
    color: var(--color-white);
    margin-bottom: var(--space-xs);
}

.pricing-card .pricing-desc {
    font-size: var(--fs-caption);
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: var(--space-lg);
}

.pricing-card ul {
    text-align: left;
}

.pricing-card ul li {
    padding: 10px 0;
    border-bottom: 1px solid var(--color-dark-border);
    font-size: var(--fs-caption);
    color: rgba(255, 255, 255, 0.7);
}

.pricing-card ul li::before {
    content: '✓ ';
    color: var(--color-accent);
    font-weight: bold;
}

/* ---- Grids ---- */
.grid {
    display: grid;
    gap: var(--space-md);
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ---- Contact Form ---- */
.form-field {
    width: 100%;
    padding: 14px 20px;
    font-family: var(--font-family);
    font-size: var(--fs-body);
    color: var(--color-text-dark);
    background: var(--color-light);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-fast);
}

.form-field:focus {
    border-color: var(--color-accent);
}

.form-field::placeholder {
    color: var(--color-text-muted);
}

textarea.form-field {
    resize: vertical;
    min-height: 120px;
}

/* ---- Card Price ---- */
.product-card .card-price {
    font-size: var(--fs-h3);
    font-weight: var(--fw-extrabold);
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.product-card .card-price small {
    font-size: var(--fs-small);
    font-weight: var(--fw-normal);
    color: var(--color-text-muted);
}

/* ---- Video Badge (on product cards) ---- */
.video-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.7);
    color: var(--color-white);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: var(--fw-semibold);
    cursor: pointer;
    z-index: 2;
    transition: background var(--transition-fast);
}

.video-badge:hover {
    background: var(--color-accent);
}

/* ---- Case Play Button ---- */
.case-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: none;
    border: none;
    cursor: pointer;
    z-index: 3;
    opacity: 0.8;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.case-card:hover .case-play {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.15);
}

.case-card .case-robot {
    font-size: var(--fs-small);
    color: rgba(255, 255, 255, 0.6);
    margin-top: 4px;
}

/* ---- Video Modal ---- */
.video-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.9);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.video-modal.open {
    opacity: 1;
    pointer-events: auto;
}

.video-modal-inner {
    position: relative;
    width: 90%;
    max-width: 960px;
}

.video-modal-inner video {
    width: 100%;
    border-radius: var(--radius-lg);
    outline: none;
}

.video-modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 32px;
    cursor: pointer;
    line-height: 1;
}

/* ---- Store Gallery ---- */
.store-card .store-image {
    position: relative;
    overflow: hidden;
    height: 240px;
}

.store-card .store-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.store-card:hover .store-image img {
    transform: scale(1.05);
}

.store-gallery-dots {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
}

.store-gallery-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
}

.store-gallery-dots .dot.active {
    background: var(--color-white);
}

.store-video-link {
    display: inline-block;
    margin-top: var(--space-xs);
    font-size: var(--fs-caption);
    color: var(--color-accent);
    text-decoration: none;
    font-weight: var(--fw-semibold);
}

.store-video-link:hover {
    text-decoration: underline;
}