:root {
    --primary: #FF4D00;
    --primary-hover: #E64500;
    --dark: #0A0A0A;
    --light: #FFFFFF;
    --gray: #F5F5F7;
    --text-dark: #1D1D1F;
    --text-light: #86868B;
    --glass: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.2);
    --radius-ext: 40px;
    --radius-std: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--light);
    color: var(--text-dark);
    overflow-x: hidden;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.logo {
    font-size: 28px;
    font-weight: 900;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 2px;
    text-decoration: none;
}

.logo span {
    color: var(--primary);
}

nav {
    display: flex;
    gap: 30px;
}

nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 16px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
}

nav a:hover {
    color: var(--primary);
}

.nav-btn {
    background: var(--primary);
    color: white !important;
    padding: 12px 25px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700 !important;
    text-decoration: none;
}

.nav-btn .icon-circle {
    background: rgba(255, 255, 255, 0.2);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

.detail-view {
    padding: 140px 5% 80px 5%;
    display: flex;
    gap: 60px;
    min-height: 80vh;
}

.product-gallery {
    flex: 1;
    position: sticky;
    top: 140px;
    height: fit-content;
}

.product-gallery img {
    width: 100%;
    border-radius: var(--radius-ext);
    box-shadow: 0 40px 80px rgba(0,0,0,0.1);
}

.product-content {
    flex: 1.2;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.back-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-light);
    font-weight: 600;
    margin-bottom: 10px;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--primary);
}

.detail-badge {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(255, 77, 0, 0.1);
    color: var(--primary);
    border-radius: 50px;
    font-weight: 700;
    font-size: 14px;
}

.detail-title {
    font-size: 48px;
    font-weight: 900;
    line-height: 1.1;
}

.detail-price {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
}

.detail-desc {
    font-size: 18px;
    color: var(--text-light);
    line-height: 1.6;
    margin-top: 10px;
}

.specs {
    margin-top: 20px;
}

.specs h4 {
    font-size: 20px;
    margin-bottom: 15px;
}

.specs-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.specs-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.specs-list i {
    color: #27ae60;
}

.buy-card {
    background: var(--gray);
    padding: 30px;
    border-radius: var(--radius-std);
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.big-buy-btn {
    background: var(--primary);
    color: white;
    padding: 20px 60px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 800;
    font-size: 18px;
    transition: var(--transition);
    box-shadow: 0 20px 40px rgba(255, 77, 0, 0.2);
}

.big-buy-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px rgba(255, 77, 0, 0.3);
    background: var(--primary-hover);
}

.hero-container {
    padding: 100px 2.5% 40px 2.5%; 
}

.hero {
    position: relative;
    height: 600px;
    width: 100%;
    border-radius: var(--radius-ext);
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
}

.hero h1 { font-size: 64px; font-weight: 800; margin-bottom: 20px; }
.hero p { font-size: 18px; margin-bottom: 40px; color: rgba(255,255,255,0.8); }

.search-float {
    position: relative;
    margin-top: -60px;
    width: 90%;
    max-width: 1100px;
    background: var(--glass);
    backdrop-filter: blur(20px);
    border-radius: 80px;
    padding: 20px 40px;
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.1);
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr 0.6fr;
    align-items: center;
    gap: 20px;
    margin-left: auto;
    margin-right: auto;
    z-index: 100;
}

.search-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding-right: 20px;
    border-right: 1px solid rgba(0,0,0,0.05);
}

.search-field label { font-size: 12px; font-weight: 800; text-transform: uppercase; color: var(--text-light); }
.search-field input, .search-field select { border: none; background: transparent; outline: none; font-weight: 600; font-size: 14px; }

.search-btn {
    background: var(--primary);
    color: white;
    border: none;
    height: 54px;
    width: 54px;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
}

.main-layout { display: flex; padding: 60px 5%; gap: 40px; }
.sidebar { width: 280px; flex-shrink: 0; }
.category-item { 
    padding: 15px 20px; 
    border-radius: 12px; 
    margin-bottom: 8px; 
    background: var(--gray); 
    cursor: pointer; 
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    font-weight: 600; 
    position: relative;
    border: 2px solid transparent;
    transition: var(--transition);
    color: var(--text-dark);
}
.category-item:hover, .category-item.active { 
    background: transparent; 
    border-color: var(--primary); 
}

/* Subcategory Accordion */
.category-wrapper {
    position: relative;
}

.subcategory-accordion {
    max-height: 0;
    overflow: hidden;
    background: var(--gray);
    border-radius: 0 0 12px 12px;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
    padding: 0 10px;
    border-top: none;
}

.subcategory-accordion.expanded {
    max-height: 500px;
    padding: 8px 10px 10px 10px;
    border-top: 1px dashed rgba(0,0,0,0.08);
}

.accordion-item {
    display: block;
    padding: 10px 15px 10px 25px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-dark);
    font-size: 13px;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
}

.accordion-item::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--text-light);
    opacity: 0.4;
    transition: var(--transition);
}

.accordion-item:hover {
    background: var(--primary);
    color: white;
}

.accordion-item:hover::before {
    background: white;
    opacity: 1;
}

.accordion-item.active {
    background: var(--primary);
    color: white;
}

.accordion-item.active::before {
    background: white;
    opacity: 1;
}

.category-item::after {
    content: '\f107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    opacity: 0.3;
    font-size: 12px;
    transition: transform 0.3s ease;
}
.category-item.no-sub::after { display: none; }
.category-item.active::after {
    transform: rotate(180deg);
    opacity: 0.6;
}

.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 30px; }
.product-card { background: var(--gray); border-radius: var(--radius-std); padding: 20px; cursor: pointer; transition: var(--transition); }
.product-card:hover { transform: translateY(-10px); background: white; box-shadow: 0 30px 60px rgba(0,0,0,0.05); }
.product-img { width: 100%; height: 250px; border-radius: 15px; object-fit: cover; margin-bottom: 20px; }
.product-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 15px; }
.price-tag { font-size: 22px; font-weight: 900; color: var(--primary); }
.plus-btn { 
    width: 44px; 
    height: 44px; 
    border-radius: 22px; 
    background: var(--dark); 
    color: white !important; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    overflow: hidden;
    white-space: nowrap;
    padding: 0;
    text-decoration: none;
}
.plus-btn:hover {
    width: 140px;
    background: var(--primary);
    box-shadow: 0 10px 20px rgba(255,77,0,0.3);
    padding: 0 15px;
}
.plus-btn span {
    max-width: 0;
    opacity: 0;
    font-size: 13px;
    font-weight: 800;
    transition: all 0.3s;
    margin-left: 0;
}
.plus-btn:hover span {
    max-width: 100px;
    opacity: 1;
    margin-left: 8px;
}
.plus-btn i { font-size: 16px; }

@media (max-width: 1200px) {
    .main-layout { gap: 20px; }
    .sidebar { width: 240px; }
}

@media (max-width: 992px) {
    .detail-view { flex-direction: column; padding-top: 120px; }
    .product-gallery { position: static; }
    .hero h1 { font-size: 48px; }
    .search-float { grid-template-columns: repeat(3, 1fr); padding: 30px; border-radius: 40px; margin-top: -40px; }
    .search-field { border-right: none; border-bottom: 1px solid rgba(0,0,0,0.05); padding-bottom: 10px; padding-right: 0; }
    .search-field:last-child { border-bottom: none; }
    .main-layout { flex-direction: column; padding-top: 100px; }
    .sidebar { width: 100%; }
    .main-layout > div[style*="position: sticky"] { position: static !important; }
}

@media (max-width: 768px) {
    header { padding: 15px 5%; }
    nav { 
        display: none; 
        position: absolute; 
        top: 100%; 
        left: 0; 
        width: 100%; 
        background: white; 
        flex-direction: column; 
        padding: 20px; 
        box-shadow: 0 10px 20px rgba(0,0,0,0.1); 
        gap: 15px;
    }
    nav.mobile-active { display: flex; }
    .mobile-menu-btn { display: block !important; font-size: 24px; color: var(--dark); cursor: pointer; }
    .nav-btn { display: none; }
    .hero { height: 500px; }
    .hero h1 { font-size: 36px; }
    .search-float { grid-template-columns: repeat(2, 1fr); gap: 15px; padding: 20px; border-radius: 20px; }
    .search-btn { width: 100%; height: 44px; border-radius: 10px; }
    .product-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; }
    .modal-card { padding: 20px; }
    .form-grid { grid-template-columns: 1fr; }
    .full-width { grid-column: span 1; }
    .checkout-type-toggle { flex-direction: column; border-radius: 20px; }
    .toggle-opt { border-radius: 15px; }
    #checkoutFormStep { padding: 0 10px !important; }
    .big-buy-btn { font-size: 16px; padding: 15px 30px; }
    .detail-title { font-size: 32px; }
    .detail-price { font-size: 28px; }
    .buy-card { flex-direction: column; gap: 15px; align-items: stretch; text-align: center; }
    .buy-card > div { margin-bottom: 10px; }
    .buy-card .big-buy-btn { margin-left: 0 !important; }
    #cartDrawer { width: 100% !important; right: -100% !important; padding: 20px !important; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 28px; }
    .hero p { font-size: 15px; }
    .search-float { grid-template-columns: 1fr; }
    .product-img { height: 200px; }
    .product-grid { grid-template-columns: 1fr; }
    .iban-row { flex-direction: column; align-items: flex-start; gap: 5px; }
}

/* Modal System */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(15px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-card {
    background: white;
    width: 100%;
    max-width: 600px;
    border-radius: var(--radius-ext);
    padding: 40px;
    position: relative;
    box-shadow: 0 50px 100px rgba(0,0,0,0.3);
    overflow-y: auto;
    max-height: 90vh;
}

.modal-close {
    position: absolute;
    top: 25px;
    right: 30px;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
}

.modal-close:hover { color: var(--primary); }

.checkout-type-toggle {
    display: flex;
    background: var(--gray);
    padding: 5px;
    border-radius: 50px;
    margin-bottom: 30px;
}

.toggle-opt {
    flex: 1;
    text-align: center;
    padding: 12px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 700;
    transition: var(--transition);
}

.toggle-opt.active {
    background: var(--primary);
    color: white;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.full-width { grid-column: span 2; }

.form-input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-input-group label {
    font-size: 13px;
    font-weight: 800;
    color: var(--text-light);
    text-transform: uppercase;
}

.form-input-group input, .form-input-group textarea {
    padding: 15px 20px;
    background: var(--gray);
    border: 2px solid transparent;
    border-radius: 15px;
    font-size: 15px;
    font-weight: 600;
    outline: none;
    transition: var(--transition);
}

.form-input-group input:focus, .form-input-group textarea:focus {
    border-color: var(--primary);
    background: white;
}

/* IBAN Card */
.iban-display {
    background: var(--dark);
    color: white;
    padding: 30px;
    border-radius: var(--radius-std);
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.iban-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 10px;
}

.iban-val {
    font-family: monospace;
    font-size: 18px;
    color: var(--primary);
    font-weight: 700;
}

.copy-btn {
    background: rgba(255,255,255,0.1);
    color: white;
    border: none;
    padding: 5px 12px;
    border-radius: 5px;
    font-size: 12px;
    cursor: pointer;
}

.status-success {
    text-align: center;
    color: #27ae60;
    font-weight: 800;
    margin-bottom: 20px;
}