/* reset ukuran default */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
/* palet warna & gaya global */
:root {
    --hitam: #000000;
    --gradasi-gelap: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #1a1a1a 100%);
    --aksen-oranye: #ff6b35;
    --aksen-hijau: #00ff88;
    --teks-utama: #ffffff;
    --teks-pudar: #cccccc;
    --teks-sekunder: #999999;
    --kartu-latar: rgba(255, 255, 255, 0.05);
    --garis-tipis: rgba(255, 255, 255, 0.1);
    --bayangan-dalam: 0 20px 40px rgba(0, 0, 0, 0.7);
}
/* body utama */
body {
    font-family: 'Inter', sans-serif;
    background: var(--gradasi-gelap);
    color: var(--teks-utama);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}
/* kontainer katalog */
.catalog {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(45deg, rgba(0, 0, 0, 0.8), rgba(45, 45, 45, 0.6)), url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23333" stroke-width="0.5" opacity="0.3"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
}
/* layer latar belakang (grid + gradient) */
.latar-belakang {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}
/* efek abstrak menyerupai gelombang di bagian bawah */
.efek-gelombang {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 30%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    clip-path: polygon(0% 100%, 0% 70%, 15% 60%, 25% 65%, 35% 45%, 50% 55%, 65% 35%, 80% 50%, 90% 40%, 100% 45%, 100% 100%);
}
/* efek garis */
.efek-garis {
    position: absolute;
    top: 10%;
    left: 0;
    width: 120px;
    height: 3px; 
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px; 
    animation: driftRight 20s linear infinite;
}
/* mengatur agar efek garis bisa bergerak */
@keyframes driftRight {
    0% { transform: translateX(-100px); }
    100% { transform: translateX(calc(100vw + 100px)); }
}
/* header */
.header-catalog {
    text-align: center;
    padding: 3rem 2rem 2rem;
    position: relative;
    z-index: 1;
}
/* judul halaman */
.judul {
    font-family: 'Oswald', sans-serif;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 300;
    letter-spacing: 0.1em;
    color: var(--aksen-oranye);
    margin-bottom: 0.5rem;
}
/* slogan (tagline) */
.slogan {
    font-size: 1rem;
    color: var(--teks-pudar);
    margin-bottom: 2rem;
    font-style: italic;
}
/* garis berwarna pemisah antara header degan card */
.header-garis {
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, var(--aksen-oranye), var(--aksen-hijau));
    margin: 0 auto;
}
/* mengatur bentuk produk 1 */
.semua-stok {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 1;
}
.tata-letak {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2.5rem;
    margin-bottom: 3rem;
}
.sepatu-card {
    position: relative;
    background: var(--kartu-latar);
    backdrop-filter: blur(15px);
    border: 1px solid var(--garis-tipis);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: var(--bayangan-dalam);
}
.sepatu-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--aksen-oranye), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.sepatu-card:hover:before {
    opacity: 1;
}
.sepatu-card:hover {
    transform: translateY(-10px) rotateY(2deg);
    box-shadow: var(--bayangan-dalam), 0 0 30px rgba(255, 107, 53, 0.3);
    border-color: rgba(255, 107, 53, 0.5);
}
.efek-card {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 107, 53, 0.1) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}
.sepatu-card:hover .efek-card {
    opacity: 1;
}
.tampilan-sepatu {
    position: relative;
    height: 280px;
    overflow: hidden;
    background: linear-gradient(45deg, rgba(0, 0, 0, 0.3), transparent);
}
.foto-sepatu {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
    filter: contrast(1.1) brightness(0.9);
}
.sepatu-card:hover .foto-sepatu {
    transform: scale(1.08) rotate(1deg);
    filter: contrast(1.2) brightness(1);
}
.format-status {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 60%, rgba(0, 0, 0, 0.4));
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1.5rem;
}
.status {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}
.akan-datang {
    background: linear-gradient(45deg, #ff6b35, #f7931e);
    color: white;
}
.tersedia {
    background: linear-gradient(45deg, #00ff88, #00d4aa);
    color: black;
}
.habis {
    background: linear-gradient(45deg, #666666, #999999);
    color: white;
}
.detail-sepatu {
    padding: 2rem;
}
.label {
    font-size: 0.8rem;
    color: var(--aksen-oranye);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}
#comming,
#ready,
#sold {
    font-family: 'Oswald', sans-serif;
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--teks-utama);
    letter-spacing: 0.05em;
}
p.tentang-sepatu {
    color: var(--teks-sekunder);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}
.tentang-harga {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1rem;
}
.harga-sepatu {
    font-family: 'Oswald', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--aksen-oranye);
}
.ukuran {
    font-size: 0.8rem;
    color: var(--teks-pudar);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.cek-warna {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}
.titik-warna {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: transform 0.2s ease;
}
.titik-warna:hover {
    transform: scale(1.2);
}
/* warna varian untuk titik */
.orange-sunset { background: linear-gradient(45deg, #ff6b35, #f7931e); }
.matrix-green { background: linear-gradient(45deg, #00ff88, #00d4aa); }
.concrete-grey { background: linear-gradient(45deg, #999999, #666666); }


.tentang-btn {
    position: relative;
    width: 100%;
    padding: 1rem 2rem;
    border: 2px solid var(--aksen-oranye);
    border-radius: 0;
    background: transparent;
    font-family: 'Oswald', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--aksen-oranye);
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
}
.isi-btn {
    position: relative;
    z-index: 2;
}
.efek-btn {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 107, 53, 0.3), transparent);
    transition: left 0.5s ease;
}
.tentang-btn:hover .efek-btn {
    left: 100%;
}
.tentang-btn:hover {
    background: var(--aksen-oranye);
    color: var(--hitam);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 107, 53, 0.3);
}
.tentang-btn.disabled {
    border-color: var(--teks-sekunder);
    color: var(--teks-sekunder);
    cursor: not-allowed;
}
.tentang-btn.disabled:hover {
    background: transparent;
    color: var(--teks-sekunder);
    transform: none;
    box-shadow: none;
}
/* jenis btn */
.barang-comming {
    background: linear-gradient(145deg, rgba(255, 107, 53, 0.1), rgba(247, 147, 30, 0.05));
}
.barang-ready {
    background: linear-gradient(145deg, rgba(51, 102, 255, 0.1), rgba(255, 51, 102, 0.05));
}
.baranng-sold {
    background: linear-gradient(145deg, rgba(255, 237, 78, 0.1), rgba(153, 153, 153, 0.05));
}
/* tentang footer */
.tentang-footer {
    text-align: center;
    padding: 3rem 2rem 2rem;
    position: relative;
    z-index: 1;
}
.garis-footer {
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--aksen-oranye), var(--aksen-hijau), var(--aksen-oranye));
    margin: 0 auto 1rem;
}
.copyright {
    color: var(--teks-sekunder);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}
.format-footer {
    display: flex;
    justify-content: center;
    gap: 2rem;
}
.isi-footer {
    font-size: 0.8rem;
    color: var(--teks-pudar);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
/* Responsive design */
@media (max-width: 768px) {
    .semua-stok {
        padding: 1.5rem;
    }
    .tata-letak {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .detail-sepatu {
        padding: 1.5rem;
    }
    .judul {
        font-size: 1.5rem;
    }
    .format-footer {
        flex-direction: column;
        gap: 0.5rem;
    }

}

@media (max-width: 480px) {
    .header-catalog {
        padding: 2rem 1rem 1rem;
    }
    .tampilan-sepatu {
        height: 240px;
    }
    .detail-sepatu {
        padding: 1.25rem;
    }
    #comming,
    #ready,
    #sold {
        font-size: 1.4rem;
    }
    .harga-sepatu {
        font-size: 1.5rem;
    }
}