/* Global Styles & Variables */
:root {
    --primary-color: #00D1D1;
    --secondary-color: #ffffff;
    --text-color: #222222;
    --bg-color: #f8f9fa;
    --gray-light: #eceff1;
    --gray-text: #757575;
    --font-heading: 'Poppins', 'Noto Sans Lao', sans-serif;
    --font-sans: 'Noto Sans Lao', 'Inter', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    color: var(--text-color);
    background-color: var(--bg-color);
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
}

.logo {
    width: auto;
    height: 80px;
    padding: 13px;
    font-size: 30px;
    font-weight: bold;
    color: #00d4d4;
    text-shadow: 3px 3px 8px rgba(0, 0, 0, 0.3);
    display: flex;
    cursor: pointer;
    border-radius: 50%;
}

.logo img {
    width: auto;
    height: 50px;
    border-radius: 50%;
    transition: transform 0.1s ease-in-out;
    filter: drop-shadow(0. 4px 10px rgba(0, 0, 0, 0.3));
}

.logo:active {
    transform: scale(0.30);
    filter: brightness(0.3);
}

h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-narrow {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.text-center { text-align: center; }
.block { display: block; }

/* Layout Page Display Management */
.page-section {
    display: none;
}
.page-section.active {
    display: block;
}

/* Button Component Styles */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    text-align: center;
    font-family: var(--font-sans);
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--secondary-color);
}
.btn-primary:hover {
    background-color: #00b4b4;
}

.btn-dark {
    background-color: var(--text-color);
    color: var(--secondary-color);
}
.btn-dark:hover {
    background-color: #424242;
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}
.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--secondary-color);
}

.btn-full {
    width: 100%;
}

/* Header Styles */
.main-header {
    background-color: var(--secondary-color);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    align-items: center;
    height: 64px;
}

.logo-area {
    flex: 1; /* Pushes menu tabs to the far right */
    cursor: pointer;
}

.logo-text {
    font-size: 24px;
    color: var(--primary-color);
    font-weight: 700;
}

.nav-links {
    display: flex;
    gap: 32px;
    margin-right: 48px; /* Safe space before cart icon element */
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.2s;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
}

.cart-btn {
    font-weight: 500;
}
.cart-btn:hover {
    color: var(--primary-color);
}

.user-avatar {
    font-size: 20px;
}

/* Home Section Layouts */
.hero-banner {
    position: relative;
    height: 500px;
    background-image: url('https://images.unsplash.com/photo-1441984904996-e0b6ba687e04?auto=format&fit=crop&w=1600&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-color);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-content h2 {
    font-size: 42px;
    margin-bottom: 16px;
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 32px;
}

.section-padding {
    padding: 48px 0;
}

.section-title {
    font-size: 24px;
    margin-bottom: 24px;
}

.category-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-category {
    background-color: var(--secondary-color);
    border: 1px solid #e0e0e0;
    padding: 8px 24px;
    border-radius: 24px;
    cursor: pointer;
    font-family: var(--font-sans);
    transition: all 0.2s;
}

.btn-category:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Products Grid Setup */
.products-grid {
    display: grid;
    gap: 24px;
}

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

@media (max-width: 992px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 576px) {
    .grid-4 { grid-template-columns: 1fr; }
    .nav-links { display: none; }
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 768px) {
    .grid-3 { grid-template-columns: 1fr; }
}

/* Product Card Design */
.product-card {
    background-color: var(--secondary-color);
    padding: 16px;
    border-radius: 8px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    transition: transform 0.2s, box-shadow 0.2s;
}

.product-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.product-card img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    border-radius: 4px;
    cursor: pointer;
}

.product-card h4 {
    margin-top: 16px;
    font-size: 16px;
}

.product-card .prod-meta {
    font-size: 14px;
    color: var(--gray-text);
    margin-top: 4px;
}

.product-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
}

.product-price {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
}

.product-card .btn-add {
    background-color: var(--text-color);
    color: var(--secondary-color);
    padding: 6px 12px;
    font-size: 13px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-family: var(--font-sans);
}
/* คลาสเสริมสำหรับการจัดการหน้า Order บอร์ดจำลอง */
.space-y-4 > * + * {
    margin-top: 1rem;
}
.mb-4 {
    margin-bottom: 1rem;
}
.text-transform-uppercase {
    text-transform: uppercase;
}
input:disabled, button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Promo Banner */
.promo-banner {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    padding: 32px;
    border-radius: 12px;
    text-align: center;
}

.promo-banner h2 {
    font-size: 28px;
    margin-bottom: 8px;
}

/* About Brand Section Layout */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: center;
}
@media (max-width: 768px) {
    .about-grid { grid-template-columns: 1fr; }
}

.about-img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    border-radius: 8px;
}

.about-title {
    font-size: 26px;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.about-desc {
    color: var(--gray-text);
    line-height: 1.6;
    margin-bottom: 24px;
}

/* Newsletter Section */
.newsletter-section {
    background-color: var(--secondary-color);
    padding: 48px 0;
    border-top: 1px solid var(--gray-light);
    border-bottom: 1px solid var(--gray-light);
}

.newsletter-container {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
    padding: 0 20px;
}

.newsletter-container h3 {
    margin-bottom: 16px;
}

.newsletter-form {
    display: flex;
}

.form-input {
    flex: 1;
    border: 1px solid #ccc;
    border-radius: 4px 0 0 4px;
    padding: 10px 16px;
    font-size: 14px;
    font-family: var(--font-sans);
}
.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.newsletter-form .btn {
    border-radius: 0 4px 4px 0;
}

/* Shop Layout Styles */
.page-title {
    font-size: 28px;
    margin-bottom: 32px;
}

.shop-layout {
    display: flex;
    gap: 32px;
}
@media (max-width: 768px) {
    .shop-layout { flex-direction: column; }
    .shop-sidebar { width: 100% !important; }
}

.shop-sidebar {
    width: 25%;
}

.shop-content {
    width: 75%;
}
@media (max-width: 768px) {
    .shop-content { width: 100%; }
}

.filter-card {
    background-color: var(--secondary-color);
    padding: 24px;
    border-radius: 8px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.filter-group {
    margin-bottom: 24px;
}

.filter-heading {
    font-size: 16px;
    margin-bottom: 12px;
}

.filter-card .form-input {
    width: 100%;
    border-radius: 4px;
}

.checkbox-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.checkbox-list label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 15px;
}

.checkbox-list input {
    margin-right: 8px;
    width: 16px;
    height: 16px;
    accent-color: var(--primary-color);
}

.price-slider {
    width: 100%;
    accent-color: var(--primary-color);
}

.price-range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--gray-text);
    margin-top: 8px;
}

/* Product Detail Page Styles */
.back-link {
    background: none;
    border: none;
    color: var(--gray-text);
    cursor: pointer;
    font-size: 15px;
    margin-bottom: 24px;
    font-family: var(--font-sans);
}
.back-link:hover {
    color: var(--primary-color);
}

.detail-card {
    background-color: var(--secondary-color);
    border-radius: 8px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    overflow: hidden;
    display: flex;
}
@media (max-width: 768px) {
    .detail-card { flex-direction: column; }
    .detail-img-side, .detail-info-side { width: 100% !important; }
}

.detail-img-side {
    width: 50%;
}
.detail-main-img {
    width: 100%;
    height: 100%;
    max-height: 500px;
    object-fit: cover;
}

.detail-info-side {
    width: 50%;
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.detail-title {
    font-size: 28px;
    margin-bottom: 8px;
}

.detail-price {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 24px;
}

.detail-desc {
    color: var(--gray-text);
    line-height: 1.6;
    margin-bottom: 32px;
}

.qty-selector {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.input-qty {
    width: 64px;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 6px;
    text-align: center;
}

/* Cart Page Styles */
.cart-card {
    background-color: var(--secondary-color);
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.cart-headers {
    display: flex;
    border-bottom: 1px solid var(--gray-light);
    padding-bottom: 12px;
    margin-bottom: 16px;
    font-weight: 700;
    color: var(--gray-text);
}
@media (max-width: 576px) {
    .cart-headers { display: none; }
}

.header-prod { flex: 2; }
.header-qty { width: 100px; text-align: center; }
.header-price { width: 100px; text-align: right; }

.cart-item {
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--gray-light);
    padding: 16px 0;
}
@media (max-width: 576px) {
    .cart-item { flex-direction: column; text-align: center; gap: 12px; }
    .item-prod-side { flex-direction: column; }
}

.item-prod-side {
    flex: 2;
    display: flex;
    align-items: center;
    gap: 16px;
}

.cart-item-img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
}

.cart-item-info h4 {
    font-size: 16px;
}
.cart-item-info p {
    font-size: 13px;
    color: var(--gray-text);
    margin-top: 4px;
}

.item-qty-side {
    width: 100px;
    text-align: center;
}

.item-price-side {
    width: 100px;
    text-align: right;
    font-weight: 700;
}

.cart-summary {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    margin-top: 32px;
}

.summary-line {
    width: 300px;
    display: flex;
    justify-content: space-between;
    margin-bottom: 16px;
}

.summary-value {
    font-weight: 700;
    font-size: 20px;
    color: var(--primary-color);
}

.btn-checkout {
    width: 300px;
}

/* Checkout Layout Styles */
.checkout-layout {
    display: flex;
    gap: 32px;
}
@media (max-width: 768px) {
    .checkout-layout { flex-direction: column; }
    .checkout-form-card, .checkout-payment-card { width: 100% !important; }
}

.checkout-form-card, .checkout-payment-card {
    width: 50%;
    background-color: var(--secondary-color);
    padding: 24px;
    border-radius: 8px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.checkout-payment-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.card-subtitle {
    font-size: 18px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--gray-light);
    padding-bottom: 8px;
    width: 100%;
}

.form-group {
    margin-bottom: 16px;
    width: 100%;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
}

.checkout-form-card .form-input {
    width: 100%;
    border-radius: 4px;
}

.payment-total strong {
    color: var(--primary-color);
    font-size: 24px;
}

.qr-code-box {
    width: 192px;
    height: 192px;
    background-color: #fafafa;
    border: 2px dashed #ccc;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 8px;
    margin-bottom: 24px;
}

.qr-img {
    width: 144px;
    height: 144px;
    margin-bottom: 4px;
}

.qr-subtext {
    font-size: 12px;
    color: var(--gray-text);
}

.form-file-input {
    width: 100%;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 8px;
}

/* Footer Section Styles */
.main-footer {
    background-color: var(--secondary-color);
    margin-top: 48px;
    padding: 40px 0 20px 0;
    border-top: 1px solid var(--gray-light);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}
@media (max-width: 768px) {
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
}

.footer-col h4 {
    margin-bottom: 16px;
}

.footer-about, .footer-contact-info {
    font-size: 14px;
    color: var(--gray-text);
}

.footer-links-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links-list a {
    text-decoration: none;
    color: #616161;
    font-size: 14px;
}
.footer-links-list a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--gray-light);
    font-size: 14px;
    color: var(--gray-text);
}