.no-select {
  -webkit-user-select: none; 
  -ms-user-select: none; 
  user-select: none;
}

body {
  -webkit-user-select: none;
  user-select: none;
}

:root {
    --scrollbar-bg: #ffffff; 
    --scrollbar-thumb: #000000; 
}

[data-theme="dark"] {
    --scrollbar-bg: #1A1D24; 
    --scrollbar-thumb: #ffffff;
}
    
::-webkit-scrollbar {
    width: 0.7vw;
    background-color: var(--scrollbar-bg);
    transition: background-color 0.3s;
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 60px;
    border: 2px solid var(--scrollbar-bg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color); 
}
    
/* --- CSS Variables --- */
:root {
    --bg-color: #f4f7f6;
    --surface-color: #ffffff;
    --text-main: #2b2b2b;
    --text-muted: #6c757d;
    --primary-color: #000000;
    --primary-hover: #333333;
    --primary-text: #ffffff;
    --success-color: #198754;
    --border-color: #e9ecef;
    --shadow: 0 10px 40px rgba(0,0,0,0.08);
    --pill-radius: 50px;
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

[data-theme="dark"] {
    --bg-color: #0f1115;
    --surface-color: #1a1d24;
    --text-main: #f8f9fa;
    --text-muted: #a0aab5;
    --primary-color: #ffffff;
    --primary-hover: #cccccc;
    --primary-text: #000000;
    --border-color: #2d323e;
    --shadow: 0 10px 40px rgba(0,0,0,0.5);
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Poppins', sans-serif; scroll-behavior: smooth; }
body { background-color: var(--bg-color); color: var(--text-main); transition: var(--transition); overflow-x: hidden; }
img { max-width: 100%; border-radius: 8px; }

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

.animate-on-load { animation: fadeInUp 0.8s ease forwards; }

header {
    position: sticky; top: 0; z-index: 1000;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}
[data-theme="dark"] header { background-color: rgba(26, 29, 36, 0.9); }

.top-bar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 15px 5%;
    max-height: 100px;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    overflow: hidden;
    opacity: 1;
}

header.scrolled .top-bar {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
}

.logo { font-size: 28px; font-weight: 800; color: var(--primary-color); letter-spacing: 2px; display: flex; align-items: center; }
.nav-actions { display: flex; gap: 15px; align-items: center; }

/* --- Logo Image Switcher Styles --- */
.theme-logo .dark-logo { display: none; }
[data-theme="dark"] .theme-logo .light-logo { display: none; }
[data-theme="dark"] .theme-logo .dark-logo { display: inline-block; }
.theme-logo .light-logo { display: inline-block; }

.header-logo-img { height: 40px; width: auto; vertical-align: middle; }
.hero-logo-img { height: 100px; width: auto; vertical-align: middle; margin-bottom: 10px; }
@media (max-width: 768px) {
    .hero-logo-img { height: 70px; }
}

.smart-nav {
    display: flex; overflow-x: auto; gap: 10px; padding: 10px 5%;
    background: var(--surface-color); border-top: 1px solid var(--border-color);
    scrollbar-width: none; /* Firefox */
}
.smart-nav::-webkit-scrollbar { display: none; }

.nav-link {
    text-decoration: none; color: var(--text-muted);
    padding: 8px 20px; border-radius: var(--pill-radius);
    font-size: 14px; font-weight: 500; white-space: nowrap;
    transition: var(--transition); border: 1px solid transparent;
}
.nav-link:hover { color: var(--primary-color); }
.nav-link.active {
    background-color: var(--primary-color); color: var(--primary-text);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}
[data-theme="dark"] .nav-link.active { box-shadow: 0 4px 15px rgba(255, 255, 255, 0.3); }

/* --- Buttons --- */
button { cursor: pointer; border: none; outline: none; transition: var(--transition); }
.btn-icon {
    background: var(--bg-color); color: var(--text-main);
    width: 45px; height: 45px; border-radius: 50%;
    display: flex; justify-content: center; align-items: center;
    font-size: 18px; border: 1px solid var(--border-color);
}
.btn-icon:hover { background: var(--primary-color); color: var(--primary-text); border-color: var(--primary-color); }

.cart-badge {
    position: absolute; top: -5px; right: -5px;
    background: #dc3545; color: white; font-size: 12px; width: 22px; height: 22px;
    border-radius: 50%; display: flex; justify-content: center; align-items: center; font-weight: bold;
}

.container { max-width: 1300px; margin: 40px auto; padding: 0 20px; }

section { 
    padding: 60px 0; 
    margin-bottom: 40px; 
    scroll-margin-top: 130px;
    width: 100%;
} 

.category-title {
    font-size: 26px; font-weight: 700; margin-bottom: 30px;
    color: var(--text-main); display: flex; align-items: center; gap: 10px;
    max-width: 1100px; margin-left: auto; margin-right: auto;
}
.category-title::after {
    content: ''; flex: 1; height: 2px; background: var(--border-color); margin-left: 15px;
}

#home-section {
    position: relative;
    width: 100vw;
    height: 100vh;
    margin-left: calc(-50vw + 50%);
    border-radius: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-color);
    box-shadow: none;
    margin-top: -120px; 
    padding-top: 120px;
}
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
}
.home-content {
    position: relative;
    z-index: 2;
    text-align: center;
    pointer-events: none;
    padding: 20px;
}
.home-content h1 {
    font-size: 5rem;
    color: var(--text-main);
    font-weight: 800;
    letter-spacing: 2px;
    text-shadow: none;
    margin: 0;
    line-height: 1.1;
}
.home-content h1 span {
    display: block;
    font-size: 0.4em;
    font-weight: 500;
    color: var(--text-muted);
    margin-top: 10px;
    letter-spacing: 1px;
}
@media (max-width: 768px) {
    .home-content h1 { font-size: 3.5rem; }
    #home-section { height: 100vh; margin-top: -120px; padding-top: 120px; }
}

.product-grid {
    display: grid; 
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    justify-content: center;
    max-width: 1100px;
    margin: 0 auto;
}

/* Responsive Grid Adjustments */
@media (max-width: 992px) {
    .product-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .product-grid { grid-template-columns: 1fr; max-width: 450px; }
}

.product-grid .product-card:nth-child(n+4) { display: none; opacity: 0; }
.product-grid.expanded .product-card:nth-child(n+4) { display: flex; animation: fadeInUp 0.5s ease forwards; }

.product-card {
    background-color: var(--surface-color); border: 1px solid var(--border-color);
    border-radius: 20px; padding: 20px; box-shadow: var(--shadow);
    display: flex; flex-direction: column; position: relative;
    overflow: hidden;
}
.product-card:hover {  border-color: var(--primary-color); }

.product-img-wrapper { height: 200px; display: flex; justify-content: center; align-items: center; margin-bottom: 15px; cursor: pointer; position: relative; }
.product-img-wrapper img { max-height: 100%; object-fit: contain; transition: transform 0.5s; }
.product-card:hover .product-img-wrapper img { transform: scale(1.08); }

.product-title { font-size: 17px; font-weight: 600; margin-bottom: 10px; flex-grow: 1; }
.product-price { font-size: 22px; font-weight: 700; color: var(--text-main); margin-bottom: 15px; }

.badge-out-of-stock {
    position: absolute; top: 12px; right: 12px;
    background: #dc3545; color: #ffffff;
    font-size: 11px; font-weight: 700; text-transform: uppercase;
    padding: 6px 12px; border-radius: var(--pill-radius);
    letter-spacing: 1px; box-shadow: 0 4px 10px rgba(220, 53, 69, 0.4);
    z-index: 5;
}

.product-card.out-of-stock-card .product-img-wrapper img {
    filter: grayscale(40%) opacity(0.85);
}

.btn-add.disabled-btn {
    background-color: #6c757d !important;
    color: #ffffff !important;
    cursor: not-allowed !important;
    opacity: 0.7;
}

.action-group { display: flex; flex-direction: column; gap: 10px; margin-top: auto; }
.qty-control {
    display: flex; justify-content: space-between; align-items: center;
    background: var(--bg-color); border-radius: var(--pill-radius);
    padding: 5px; border: 1px solid var(--border-color);
}
.qty-btn {
    width: 35px; height: 35px; border-radius: 50%;
    background: var(--surface-color); color: var(--text-main);
    font-size: 18px; font-weight: bold; border: 1px solid var(--border-color);
    display: flex; justify-content: center; align-items: center;
}
.qty-btn:hover { background: var(--primary-color); color: var(--primary-text); border-color: var(--primary-color); }
.qty-display { font-weight: 600; font-size: 16px; width: 30px; text-align: center; }

.btn-add, .btn-info {
    padding: 12px; border-radius: var(--pill-radius); font-weight: 600; font-size: 15px; text-align: center; width: 100%;
}
.btn-info { background: transparent; border: 1px solid var(--text-muted); color: var(--text-main); margin-bottom: 5px; }
.btn-info:hover { background: var(--text-muted); color: white; }

.btn-add { background-color: var(--primary-color); color: var(--primary-text); }
.btn-add:hover { background-color: var(--primary-hover); }
.btn-add.added { background-color: var(--success-color); color: white; }

.btn-show-more {
    display: block; margin: 30px auto 0; padding: 12px 40px;
    background: transparent; color: var(--primary-color);
    border: 2px solid var(--primary-color); border-radius: var(--pill-radius);
    font-weight: 600; font-size: 16px;
}
.btn-show-more:hover { background: var(--primary-color); color: var(--primary-text); }

.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.6); backdrop-filter: blur(8px);
    z-index: 2000; display: none; justify-content: center; align-items: center;
    opacity: 0; transition: opacity 0.3s ease;
}
.modal-content {
    background-color: var(--surface-color); color: var(--text-main);
    width: 90%; max-width: 550px; border-radius: 24px; padding: 35px;
    position: relative; box-shadow: 0 25px 50px rgba(0,0,0,0.5);
    max-height: 90vh; overflow-y: auto; transform: translateY(50px); transition: transform 0.3s ease;
}
.modal-overlay.show { display: flex; opacity: 1; }
.modal-overlay.show .modal-content { transform: translateY(0); }

.close-modal {
    position: absolute; top: 20px; right: 25px;
    font-size: 24px; cursor: pointer; color: var(--text-muted);
    background: var(--bg-color); width: 40px; height: 40px; border-radius: 50%;
    display: flex; justify-content: center; align-items: center;
}
.close-modal:hover { color: #dc3545; background: #ffe6e6; }

.cart-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 15px 0; border-bottom: 1px solid var(--border-color);
}
.cart-item-info h4 { font-size: 15px; margin-bottom: 5px; }
.cart-item-price { color: var(--text-main); font-weight: 600; }
.cart-total { font-size: 22px; font-weight: 800; margin: 25px 0; text-align: right; color: var(--text-main); }

.checkout-form input {
    width: 100%; padding: 15px; margin-bottom: 15px; font-size: 15px;
    border: 1px solid var(--border-color); border-radius: 12px;
    background: var(--bg-color); color: var(--text-main);
}
.checkout-form input:focus { outline: 2px solid var(--primary-color); }
.btn-order { width: 100%; padding: 18px; font-size: 18px; border-radius: var(--pill-radius); background: #25D366; color: white; font-weight: bold; }
.btn-order:hover { filter: brightness(1.1); }

#backToTop {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--primary-color);
  color: var(--primary-text);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
  transform: translateY(20px);
}

#backToTop.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#backToTop i {
  font-size: 20px;
  z-index: 10;
}

#floating-cart {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}

#floating-cart.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#floating-cart .btn-icon {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--primary-text);
    border-color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

#floating-cart .btn-icon:hover {
    transform: scale(1.1);
}

#floating-cart .cart-badge {
    top: -5px;
    right: -5px;
    width: 24px;
    height: 24px;
    font-size: 13px;
}

.progress-circle {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.progress-circle path {
  fill: none;
  stroke: var(--primary-color);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 307.919;
  stroke-dashoffset: 307.919;
  transition: stroke-dashoffset 0.1s linear;
}

.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  padding-top: 50px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.9);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal.show {
  display: block;
  opacity: 1;
}

.modal-content {
  margin: auto;
  display: block;
  max-width: 90%;
  max-height: 85vh;
  width: auto;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 15px 50px rgba(0, 0, 0, 0.5);
}

.close-modal-fixed {
    position: fixed;
    top: 25px;
    right: 30px;
    font-size: 28px;
    color: #ffffff;
    background: rgba(255, 255, 255, 0.15);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 2200;
    backdrop-filter: blur(5px);
}
.close-modal-fixed:hover {
    background: #dc3545;
    color: #fff;
    transform: scale(1.1) rotate(90deg);
}

#smart-install-btn {
    position: fixed;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: var(--primary-color);
    color: var(--primary-text);
    border: 2px solid var(--primary-color);
    padding: 12px 28px;
    border-radius: var(--pill-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    z-index: 1001;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    display: flex;
    align-items: center;
    gap: 10px;
    opacity: 0;
    visibility: hidden;
}

#smart-install-btn.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

#smart-install-btn:hover {
    background-color: transparent;
    color: var(--primary-color);
    background: var(--surface-color);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.lang-switcher { position: relative; display: inline-block; }
.dropdown-content {
    display: none; position: absolute; right: 0; top: 55px;
    background-color: var(--surface-color); min-width: 140px;
    box-shadow: var(--shadow); border-radius: 12px; z-index: 2000;
    overflow: hidden; opacity: 0; transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    border: 1px solid var(--border-color);
}
.dropdown-content.show {
    display: block; opacity: 1; transform: translateY(0);
}
.dropdown-content a {
    color: var(--text-main); padding: 12px 20px; text-decoration: none;
    display: block; font-size: 14px; font-weight: 500;
    transition: var(--transition);
}
.dropdown-content a:hover { background-color: var(--primary-color); color: var(--primary-text); }