/* ============================================================
   Homepage styles - Category selector + cool effects
   Carousel styles provided by jquery-yys-slider.css, not duplicated here
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

body {
    background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    font-family: 'Microsoft YaHei', 'trebuchet MS', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ---- Category Selector ---- */
.category-selector {
    text-align: center;
    padding: 40px 20px 20px;
    position: relative;
    z-index: 10;
}

.main-title {
    font-size: 42px;
    font-weight: bold;
    background: linear-gradient(135deg, #f093fb, #f5576c, #4facfe, #00f2fe);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGradient 5s ease infinite;
    margin-bottom: 40px;
    text-shadow: 0 0 40px rgba(79, 172, 254, 0.3);
    letter-spacing: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.title-logo {
    width: 320px;
    flex-shrink: 0;
}

@keyframes titleGradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.category-cards {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.category-card {
    position: relative;
    width: 240px;
    height: 160px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    overflow: hidden;
}

.category-card:hover {
    transform: translateY(-8px) scale(1.02);
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(79, 172, 254, 0.3) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}

.category-card:hover .card-glow {
    opacity: 1;
}

.card-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.card-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    color: #fff;
    opacity: 0.8;
    transition: all 0.3s;
}

.category-card:hover .card-icon {
    opacity: 1;
    transform: scale(1.1);
}

.card-icon svg {
    width: 100%;
    height: 100%;
}

.card-title {
    font-size: 20px;
    font-weight: bold;
    color: #fff;
    margin: 0 0 6px;
    letter-spacing: 4px;
}

.card-desc {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
    letter-spacing: 2px;
}

.card-border {
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 2px;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    transition: all 0.4s;
}

.category-card:hover .card-border {
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.5), rgba(0, 242, 254, 0.3));
}

.category-card.active {
    background: rgba(79, 172, 254, 0.15);
}

.category-card.active .card-border {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    animation: borderPulse 2s ease infinite;
}

@keyframes borderPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.category-card.active .card-icon {
    color: #4facfe;
    opacity: 1;
}

/* ---- Game Area ---- */
.game-section {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.game-section.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: sectionFadeIn 0.6s ease forwards;
}

@keyframes sectionFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ---- Carousel Arrow Styles ---- */
.gallery_container .prev,
.gallery_container .next {
    cursor: pointer;
    transition: background 0.3s;
}

.gallery_container .prev:hover,
.gallery_container .next:hover {
    background: rgba(255, 255, 255, 0.1);
}

.gallery_container .prev::after,
.gallery_container .next::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 30px;
    border-top: 3px solid rgba(255, 255, 255, 0.8);
    border-left: 3px solid rgba(255, 255, 255, 0.8);
    transition: all 0.3s;
}

.gallery_container .prev::after {
    left: 40px;
    transform: translateY(-50%) rotate(-45deg);
}

.gallery_container .next::after {
    right: 40px;
    transform: translateY(-50%) rotate(135deg);
}

.gallery_container .prev:hover::after,
.gallery_container .next:hover::after {
    border-color: #4facfe;
    filter: drop-shadow(0 0 8px rgba(79, 172, 254, 0.8));
}

/* Card click ripple effect */
.category-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    background: radial-gradient(circle at var(--x, 50%) var(--y, 50%), rgba(79, 172, 254, 0.4) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.category-card:active::after {
    opacity: 1;
}

/* Active state glow animation */
.category-card.active .card-glow {
    opacity: 0.5;
    animation: activeGlow 2s ease-in-out infinite;
}

@keyframes activeGlow {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.7; }
}

/* ---- Mobile Responsive ---- */
@media (max-width: 860px) {
    .category-selector {
        padding: 20px 16px 10px;
    }

    .main-title {
        font-size: 28px;
        margin-bottom: 24px;
        letter-spacing: 4px;
    }

    .title-logo {
        width: 240px;
    }

    .category-cards {
        gap: 16px;
    }

    .category-card {
        width: 160px;
        height: 120px;
    }

    .card-icon {
        width: 36px;
        height: 36px;
        margin-bottom: 8px;
    }

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

    .card-desc {
        font-size: 10px;
    }

    /* Reset plugin absolute positioning */
    .content-part.part-tese {
        height: auto !important;
        position: static !important;
        padding: 1.5em 16px 3em;
    }

    .part-tese .gallery_container {
        position: static !important;
        width: 100% !important;
        height: auto !important;
        margin: 0 !important;
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }

    .part-tese .gallery_container .gallery_wrap,
    .gallery_wrap.threeD_gallery_wrap {
        position: static !important;
        width: 100% !important;
        height: auto !important;
        margin: 0 !important;
        perspective: none !important;
        display: grid !important;
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    /* Show all cards uniformly */
    .threeD_gallery_item {
        position: relative !important;
        width: 100% !important;
        height: 0 !important;
        padding-bottom: 120% !important;
        transform: none !important;
        opacity: 1 !important;
        pointer-events: auto !important;
        z-index: auto !important;
        border-radius: 10px;
        overflow: hidden;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    }

    .threeD_gallery_item img {
        position: absolute !important;
        top: 0;
        left: 0;
        width: 100% !important;
        height: 100% !important;
        object-fit: cover;
        visibility: visible !important;
    }

    .item-label {
        position: absolute !important;
        font-size: 1em !important;
    }

    /* Hide carousel arrows */
    .gallery_container .prev,
    .gallery_container .next {
        display: none !important;
    }

    /* Hide line decorations */
    .line-t, .line-r, .line-b, .line-l {
        display: none !important;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 22px;
        letter-spacing: 2px;
    }

    .title-logo {
        width: 200px;
    }

    .category-cards {
        flex-direction: column;
        align-items: center;
    }

    .category-card {
        width: 200px;
        height: 100px;
    }

    .part-tese .gallery_container .gallery_wrap,
    .gallery_wrap.threeD_gallery_wrap {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 10px;
    }
}

/* ---- Particle Background Effect ---- */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.2), transparent),
        radial-gradient(2px 2px at 50px 160px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 90px 40px, rgba(255,255,255,0.2), transparent),
        radial-gradient(2px 2px at 130px 80px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 160px 120px, rgba(255,255,255,0.2), transparent);
    background-repeat: repeat;
    background-size: 200px 200px;
    animation: particleFloat 30s linear infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes particleFloat {
    from { transform: translateY(0); }
    to { transform: translateY(-200px); }
}

/* Ensure content above particles */
.category-selector,
.game-section {
    position: relative;
    z-index: 1;
}

/* Starry background enhancement */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(1px 1px at 100px 200px, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 300px 100px, rgba(255,255,255,0.3), transparent),
        radial-gradient(1px 1px at 400px 300px, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 200px 400px, rgba(255,255,255,0.3), transparent),
        radial-gradient(1px 1px at 500px 150px, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 600px 250px, rgba(255,255,255,0.3), transparent),
        radial-gradient(1px 1px at 150px 350px, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 350px 450px, rgba(255,255,255,0.3), transparent);
    background-repeat: repeat;
    background-size: 700px 500px;
    animation: starsFloat 60s linear infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes starsFloat {
    from { transform: translateY(0) translateX(0); }
    to { transform: translateY(-500px) translateX(-100px); }
}