/* 
   GMJ Loreto - Modern SaaS Design System
   Constitution: Mobile-First, Fluid Layout, Professional SaaS Aesthetics
*/

:root {
    --primary: #000000;
    --primary-light: #1f1f23;
    --accent: #0a3ca7; 
    --accent-dark: #003496;
    --white: #ffffff;
    --gray-50: #f9f9fb;
    --gray-100: #f4f4f5;
    --gray-200: #e4e4e7;
    --gray-300: #d4d4d8;
    --gray-400: #a1a1aa;
    --gray-500: #71717a;
    --gray-600: #52525b;
    --gray-700: #3f3f46;
    --gray-800: #27272a;
    --gray-900: #18181b;
    --success: #10b981;
    --error: #ef4444;
    
    /* Typography Tokens */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --text-xs: clamp(0.7rem, 2vw, 0.75rem);
    --text-sm: clamp(0.8rem, 2vw, 0.875rem);
    --text-base: clamp(0.9rem, 2vw, 1rem);
    --text-lg: clamp(1rem, 2.5vw, 1.25rem);
    --text-xl: clamp(1.25rem, 3vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 4vw, 2rem);
    --text-3xl: clamp(2rem, 5vw, 3.5rem);

    /* Layout Tokens */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-m3: all 400ms cubic-bezier(0.2, 0, 0, 1);
    --container-width: 1200px;
    --navbar-height: 70px;
}

@media (min-width: 1024px) { :root { --navbar-height: 80px; } }

/* --- RESET & BASE --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-sans); background: var(--white); color: var(--gray-900); line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
button { border: none; background: none; font-family: inherit; cursor: pointer; outline: none; }

.container { width: min(var(--container-width), 100% - 2.5rem); margin-inline: auto; }
.section { padding-block: clamp(3rem, 8vw, 6rem); }

.section-title {
    font-size: var(--text-2xl); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 2.5rem; color: var(--primary); position: relative;
}
.section-title::after { content: ''; display: block; width: 50px; height: 4px; background: var(--accent); border-radius: 99px; margin-top: 10px; }
@media (max-width: 768px) { .section-title { text-align: center; } .section-title::after { margin-inline: auto; } }

/* --- NAVBAR --- */
.navbar { height: var(--navbar-height); background: rgba(255, 255, 255, 0.85); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--gray-100); position: sticky; top: 0; z-index: 1000; }
.nav-content { display: flex; justify-content: space-between; align-items: center; height: 100%; }
.logo-img { height: clamp(30px, 5vw, 40px); width: auto; }
.nav-links { display: none; }
@media (min-width: 1024px) {
    .nav-links { display: flex; gap: 2rem; align-items: center; }
    .nav-links a { font-size: var(--text-sm); font-weight: 600; color: var(--gray-600); }
    .nav-links a:hover { color: var(--primary); }
}
@media (max-width: 1023px) {
    .nav-links.open {
        display: flex; flex-direction: column; position: fixed; top: var(--navbar-height); left: 0; width: 100%; height: calc(100vh - var(--navbar-height)); background: var(--white); padding: 2rem; gap: 1.5rem; z-index: 999; animation: m3-enter 0.3s ease;
    }
    .nav-links.open a { font-size: var(--text-xl); font-weight: 700; }
}
.nav-actions { display: flex; align-items: center; gap: clamp(1rem, 3vw, 2rem); }
.cart-icon { position: relative; font-size: 1.5rem; cursor: pointer; }
#cart-count { position: absolute; top: -5px; right: -8px; background: var(--accent); color: var(--white); font-size: 10px; font-weight: 800; width: 18px; height: 18px; display: grid; place-items: center; border-radius: 50%; border: 2px solid var(--white); }
.menu-toggle { display: flex; flex-direction: column; gap: 6px; width: 24px; cursor: pointer; }
@media (min-width: 1024px) { .menu-toggle { display: none; } }
.menu-toggle span { width: 100%; height: 2px; background: var(--primary); border-radius: 2px; }

/* --- HERO (Carousel) --- */
.hero-carousel { 
    position: relative; 
    width: 100%; 
    height: clamp(400px, 80vh, 700px); 
    background: var(--primary); 
    overflow: hidden; 
}
.carousel-container { 
    width: 100%; 
    height: 100%; 
    position: relative; 
    overflow: hidden; 
}

.carousel-slide { 
    position: absolute; inset: 0; opacity: 0; transition: opacity 0.8s ease; 
    background-size: cover; background-position: center; display: grid; place-items: center; 
}
.carousel-slide.active { opacity: 1; }
.carousel-slide::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to bottom, rgba(0,0,0,0.2), rgba(0,0,0,0.6)); }
.carousel-content { position: relative; z-index: 10; text-align: center; color: var(--white); width: min(800px, 100% - 3rem); }
.carousel-content h1 { font-size: var(--text-3xl); font-weight: 900; line-height: 1.1; margin-bottom: 1rem; letter-spacing: -0.04em; }
.carousel-content p { font-size: var(--text-lg); color: rgba(255,255,255,0.8); font-weight: 500; }
.carousel-btn { position: absolute; top: 50%; transform: translateY(-50%); z-index: 20; width: 44px; height: 60px; background: rgba(255,255,255,0.1); backdrop-filter: blur(8px); color: white; display: grid; place-items: center; cursor: pointer; }
@media (max-width: 768px) { .carousel-btn { display: none; } }
.carousel-btn.prev { left: 0; border-radius: 0 8px 8px 0; }
.carousel-btn.next { right: 0; border-radius: 8px 0 0 8px; }

/* --- STORE GRID --- */
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(clamp(150px, 45vw, 280px), 1fr)); gap: clamp(1rem, 3vw, 2.5rem); }
.product-card { background: var(--white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--gray-100); transition: var(--transition); display: flex; flex-direction: column; height: 100%; }
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.product-image-container { aspect-ratio: 1/1; background: var(--gray-50); position: relative; overflow: hidden; }
.product-image { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.product-card:hover .product-image { transform: scale(1.05); }
.product-info { padding: 1.25rem; flex-grow: 1; display: flex; flex-direction: column; gap: 0.5rem; }
.product-name { font-size: var(--text-base); font-weight: 700; color: var(--primary); }
.product-price { font-size: var(--text-lg); font-weight: 800; color: var(--accent); }
.product-card-actions { padding: 0 1.25rem 1.25rem; }

/* --- PRODUCT DETAILS --- */
.product-detail-grid { display: grid; grid-template-columns: 1fr; gap: 2.5rem; align-items: start; }
@media (min-width: 1024px) { .product-detail-grid { grid-template-columns: 1.2fr 1fr; gap: 5rem; } }
.main-image-wrapper { aspect-ratio: 1/1; background: var(--gray-50); border-radius: var(--radius-xl); overflow: hidden; border: 1px solid var(--gray-100); }
.main-image-wrapper img { width: 100%; height: 100%; object-fit: cover; }
.thumbnail-list { display: flex; gap: 1rem; margin-top: 1rem; overflow-x: auto; padding-bottom: 5px; }
.thumb-item { width: 70px; height: 70px; border-radius: var(--radius-md); overflow: hidden; cursor: pointer; border: 2px solid transparent; flex-shrink: 0; }
.thumb-item.active { border-color: var(--accent); }
.product-detail-info h1 { font-size: var(--text-2xl); font-weight: 800; line-height: 1.2; margin-bottom: 1rem; }
.product-detail-price { font-size: var(--text-xl); font-weight: 800; color: var(--accent); margin-bottom: 1.5rem; }
.product-detail-description { font-size: var(--text-base); color: var(--gray-600); margin-bottom: 2rem; }

/* --- SIZE SELECTOR --- */
.size-selector-container { margin-block: 2rem; }
.size-label { font-size: var(--text-xs); font-weight: 800; text-transform: uppercase; color: var(--gray-400); margin-bottom: 1rem; display: block; letter-spacing: 0.05em; }
.size-grid { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.size-chip { min-width: clamp(44px, 12vw, 54px); height: clamp(44px, 12vw, 54px); border: 2px solid var(--gray-100); border-radius: var(--radius-md); display: grid; place-items: center; font-weight: 700; font-size: var(--text-sm); cursor: pointer; transition: var(--transition); background: var(--white); color: var(--gray-600); }
.size-chip:hover:not(.disabled) { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.size-chip.selected { background: var(--primary); border-color: var(--primary); color: var(--white); box-shadow: var(--shadow-md); }
.size-chip.disabled { opacity: 0.4; cursor: not-allowed; background: var(--gray-50); border-style: dashed; text-decoration: line-through; }

/* --- BUTTONS SYSTEM --- */
.btn, .btn-buy, .btn-edit, .btn-delete, .btn-logout, .btn-cancel, .checkout-btn, .btn-save, .add-btn, .login-btn, .btn-logout-mini {
    display: inline-flex; align-items: center; justify-content: center; padding: 0.8rem 1.5rem; font-weight: 700; font-size: 0.85rem; border-radius: var(--radius-md); transition: var(--transition-m3); cursor: pointer; gap: 0.5rem; border: 1px solid transparent; width: 100%;
}
@media (min-width: 768px) { .btn, .btn-buy, .btn-edit, .btn-delete, .btn-logout, .btn-cancel, .checkout-btn, .btn-save, .add-btn, .btn-logout-mini { width: auto; } }
.btn-primary, .btn-buy, .btn-save, .checkout-btn, .login-btn, .add-btn { background: var(--primary); color: var(--white); }
.btn-primary:hover, .btn-buy:hover, .btn-save:hover, .checkout-btn:hover, .login-btn:hover, .add-btn:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-outline, .btn-edit, .btn-logout-mini { background: var(--white); border: 1px solid var(--gray-200); color: var(--gray-700); }
.btn-outline:hover, .btn-edit:hover, .btn-logout-mini:hover { background: var(--gray-50); border-color: var(--gray-300); color: var(--primary); }
.btn-cancel { background: var(--gray-100); color: var(--gray-600); }
.btn-danger, .btn-delete { background: #fff; border: 1px solid #fee2e2; color: var(--error); }

/* --- FORMS & INPUTS --- */
.form-group { margin-bottom: 1.5rem; display: flex; flex-direction: column; gap: 0.5rem; }
label { display: block; font-size: 0.7rem; font-weight: 800; text-transform: uppercase; color: var(--gray-500); letter-spacing: 0.05em; margin-bottom: 0.2rem; }
input, textarea, select { width: 100%; padding: 0.85rem 1rem; background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: var(--radius-md); font-family: inherit; font-size: 0.95rem; color: var(--primary); transition: var(--transition); }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--accent); background: var(--white); box-shadow: 0 0 0 4px rgba(10, 60, 167, 0.08); }
textarea { resize: vertical; min-height: 100px; }

/* --- ABOUT (Home) --- */
.about-grid { display: grid; grid-template-columns: 1fr; gap: 3rem; }
@media (min-width: 992px) { .about-grid { grid-template-columns: 1fr 1fr; gap: 6rem; } }
.info-blocks { display: flex; flex-direction: column; gap: 2rem; }
.info-block h3 { font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 0.5rem; font-weight: 800; }

/* --- CART SIDEBAR --- */
.cart-sidebar { position: fixed; top: 0; right: -100%; width: 100%; max-width: 450px; height: 100vh; background: var(--white); z-index: 3000; transition: var(--transition-m3); display: flex; flex-direction: column; box-shadow: var(--shadow-xl); }
.cart-sidebar.open { right: 0; }
.cart-sidebar-header { padding: 1.5rem 2rem; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--gray-100); }
.cart-sidebar-header h3 { font-size: 1.25rem; font-weight: 800; }
.close-cart { font-size: 2.5rem; color: var(--gray-400); cursor: pointer; }
.cart-items-list { flex: 1; overflow-y: auto; padding: 1.5rem 2rem; }
.cart-item { display: flex; gap: 1rem; padding: 1.5rem 0; border-bottom: 1px solid var(--gray-50); align-items: center; }
.cart-item-img { width: 70px; height: 70px; border-radius: var(--radius-md); object-fit: cover; }
.cart-item-info { flex: 1; }
.cart-item-name { font-size: 0.9rem; font-weight: 700; }
.cart-item-price { font-size: 0.875rem; font-weight: 800; color: var(--accent); }
.cart-sidebar-footer { padding: 2rem; background: var(--gray-50); border-top: 1px solid var(--gray-100); }
.cart-total { display: flex; justify-content: space-between; margin-bottom: 1.5rem; font-size: 1.25rem; font-weight: 800; }

/* --- ADMIN DASHBOARD --- */
.admin-body { background: var(--gray-50); min-height: 100vh; }
.admin-auth-container { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--gray-100); padding: 2rem; }
.auth-card { width: 100%; max-width: 400px; padding: 3rem; background: var(--white); border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); text-align: center; }
.auth-title { font-size: 1.5rem; font-weight: 800; margin-bottom: 0.5rem; }
.auth-subtitle { color: var(--gray-500); font-size: 0.875rem; margin-bottom: 2rem; }
.admin-top-nav { height: 70px; background: var(--white); border-bottom: 1px solid var(--gray-200); position: sticky; top: 0; z-index: 1001; }
.admin-nav-content { display: flex; justify-content: space-between; align-items: center; height: 100%; }
.admin-logo-group { display: flex; align-items: center; gap: 1.5rem; }
.sidebar-logo { font-weight: 800; font-size: 0.9rem; letter-spacing: 0.05em; color: var(--primary); }
.admin-nav-links { display: flex; gap: 1rem; }
.admin-nav-links .nav-item { font-size: 0.8rem; font-weight: 700; color: var(--gray-500); padding: 0.5rem 1rem; border-radius: var(--radius-md); transition: var(--transition); }
.admin-nav-links .nav-item:hover, .admin-nav-links .nav-item.active { background: var(--gray-100); color: var(--primary); }
@media (max-width: 992px) {
    .admin-nav-links { position: fixed; top: 70px; left: 0; width: 100%; height: auto; background: var(--white); flex-direction: column; padding: 1.5rem; box-shadow: var(--shadow-lg); transform: translateY(-150%); transition: var(--transition-m3); z-index: 1000; }
    .admin-nav-links.open { transform: translateY(0); }
}
.admin-user-actions { display: flex; align-items: center; gap: 1.5rem; }
.user-email-display { font-size: 0.75rem; font-weight: 600; color: var(--gray-400); }
.btn-logout-mini { font-size: 0.75rem; padding: 0.4rem 0.8rem; border: 1px solid var(--gray-200); border-radius: var(--radius-sm); width: auto; }
.main-content { padding-top: 2rem; padding-bottom: 5rem; }
.admin-section-title { font-size: 1.75rem; font-weight: 800; }
.admin-section-subtitle { color: var(--gray-500); }
.metrics-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; margin-bottom: 3rem; }
.metric-card { background: var(--white); padding: 1.5rem; border-radius: var(--radius-lg); border: 1px solid var(--gray-100); box-shadow: var(--shadow-sm); }
.metric-label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; color: var(--gray-400); display: block; margin-bottom: 0.5rem; }
.metric-value { font-size: 1.5rem; font-weight: 800; color: var(--primary); }
.charts-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; margin-bottom: 3rem; }
@media (min-width: 1200px) { .charts-grid { grid-template-columns: 1.5fr 1fr; } }
.chart-box { background: var(--white); padding: 2rem; border-radius: var(--radius-xl); border: 1px solid var(--gray-100); height: 400px; display: flex; flex-direction: column; }
.chart-title { font-size: 1rem; font-weight: 700; margin-bottom: 1.5rem; }
.card { background: var(--white); border-radius: var(--radius-xl); padding: 2rem; border: 1px solid var(--gray-100); box-shadow: var(--shadow-sm); margin-bottom: 3rem; }
.section-header-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; flex-wrap: wrap; gap: 1rem; }
.card-title { font-size: 1.25rem; font-weight: 800; }
.admin-table-wrapper { width: 100%; overflow-x: auto; margin-top: 1rem; }
.admin-table { width: 100%; border-collapse: collapse; min-width: 800px; }
.admin-table th { text-align: left; padding: 1rem; background: var(--gray-50); font-size: 0.7rem; font-weight: 800; text-transform: uppercase; color: var(--gray-400); }
.admin-table td { padding: 1.25rem 1rem; border-bottom: 1px solid var(--gray-50); font-size: 0.875rem; }
.status-pill { padding: 0.3rem 0.8rem; border-radius: var(--radius-full); font-size: 0.7rem; font-weight: 800; text-transform: uppercase; }
.status-paid { background: #dcfce7; color: #166534; }
.status-pending { background: #fef3c7; color: #92400e; }
.status-cancelled { background: #fee2e2; color: #991b1b; }

/* --- MODALS (Mobile-First & Professional) --- */
.modal { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.6); backdrop-filter: blur(8px); display: none; align-items: center; justify-content: center; z-index: 9999; padding: 1rem; }
.modal.show { display: flex; }
.modal-content { background: var(--white); border-radius: var(--radius-xl); width: min(100%, 550px); padding: clamp(1.25rem, 5vw, 2.5rem); box-shadow: var(--shadow-xl); position: relative; animation: m3-enter 0.4s cubic-bezier(0.4, 0, 0.2, 1); max-height: 95vh; overflow-y: auto; overflow-x: hidden; }
.modal-title-text, .modal-title-main { font-size: 1.5rem; font-weight: 800; margin-bottom: 2rem; color: var(--primary); letter-spacing: -0.02em; }
.product-modal-content, .order-modal-content { width: min(100%, 950px) !important; }

.product-form-grid, .form-row, .order-details-grid, .upload-grid-secondary { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 850px) { .product-form-grid { grid-template-columns: 1.4fr 1fr; gap: 2.5rem; } .form-row, .order-details-grid, .upload-grid-secondary { grid-template-columns: 1fr 1fr; } }

.upload-preview { width: 100%; aspect-ratio: 16/9; background: var(--gray-50); border: 2px dashed var(--gray-200); border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; margin-bottom: 1rem; overflow: hidden; position: relative; transition: var(--transition); }
.upload-preview img { width: 100%; height: 100%; object-fit: cover; }
.upload-grid-secondary .upload-preview { aspect-ratio: 1/1; }

.details-column { background: var(--gray-50); padding: 1.5rem; border-radius: var(--radius-lg); border: 1px solid var(--gray-100); }
.details-subtitle { font-size: 0.75rem; text-transform: uppercase; color: var(--accent); margin-bottom: 1.25rem; font-weight: 800; letter-spacing: 0.05em; }
.items-summary-box { background: var(--white); padding: 1.5rem; border-radius: var(--radius-lg); border: 1px solid var(--gray-100); margin: 2rem 0; }
.order-total-row { display: flex; justify-content: space-between; font-weight: 800; font-size: 1.25rem; padding: 1.5rem 0 0; border-top: 2px solid var(--gray-50); color: var(--primary); }

.modal-actions, .modal-actions-footer { display: flex; gap: 1rem; margin-top: 2.5rem; }
@media (max-width: 480px) { .modal-actions, .modal-actions-footer { flex-direction: column; } .modal-actions button, .modal-actions-footer button { width: 100%; } }
.btn-close-x { position: absolute; top: 1.5rem; right: 1.5rem; font-size: 1.75rem; color: var(--gray-300); cursor: pointer; background: none; border: none; }

.dashboard-hidden { display: none; }
.admin-section-hidden { display: none; }
.admin-section-hidden.show { display: block; animation: m3-enter 0.4s ease; }

/* Admin Variations Toggle */
.admin-toggle-group { background: var(--gray-50); padding: 1.25rem; border-radius: var(--radius-lg); margin-bottom: 1.5rem; border: 1px solid var(--gray-100); }
.size-stock-admin-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); gap: 1rem; margin-top: 1rem; padding: 1.5rem; background: var(--white); border-radius: var(--radius-md); border: 1px solid var(--gray-100); }
.stock-field-mini label { font-size: 10px; text-align: center; color: var(--gray-400); margin-bottom: 0.25rem; display: block; }
.stock-field-mini input { padding: 0.5rem; text-align: center; font-weight: 700; font-size: 0.85rem; }

/* --- CHECKOUT PAGE --- */
.checkout-wrapper { max-width: 850px; margin: 0 auto; padding: 3rem; background: var(--white); border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); border: 1px solid var(--gray-100); }
.checkout-title { font-size: 1.75rem; font-weight: 800; margin-bottom: 2.5rem; text-align: center; }
.delivery-section { margin-top: 2.5rem; padding-top: 2.5rem; border-top: 1px solid var(--gray-100); }
.pickup-option-group { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.checkbox-input { width: 20px; height: 20px; accent-color: var(--accent); cursor: pointer; border-radius: 4px; }
.pickup-label, .privacy-label { font-size: 0.9rem; font-weight: 600; color: var(--gray-700); cursor: pointer; }
.pickup-info-box { background: #e0f2fe; color: #0369a1; padding: 1.25rem; border-radius: var(--radius-lg); font-size: 0.85rem; margin-bottom: 2rem; border: 1px solid rgba(3, 105, 161, 0.1); }
.address-label { font-size: 1rem; font-weight: 800; margin-bottom: 1.5rem; color: var(--primary); }
.address-fields-grid-1 { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
.address-fields-grid-2 { display: grid; grid-template-columns: 1fr; gap: 1.5rem; margin-top: 1.5rem; }
@media (min-width: 768px) { .address-fields-grid-1 { grid-template-columns: 140px 1fr; } .address-fields-grid-2 { grid-template-columns: 1fr 1fr 1fr; } }
.readonly-input { background: var(--gray-100); color: var(--gray-500); cursor: not-allowed; }
.shipping-alert { background: var(--gray-50); padding: 1.25rem; border-radius: var(--radius-lg); border: 1px solid var(--gray-200); margin: 2rem 0; font-size: 0.85rem; color: var(--gray-700); }
.summary-box { background: var(--gray-50); padding: 2rem; border-radius: var(--radius-lg); margin: 2.5rem 0; border: 1px solid var(--gray-100); }
.summary-box h3 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--gray-400); margin-bottom: 1.5rem; }
.summary-item { display: flex; justify-content: space-between; margin-bottom: 0.75rem; font-size: 0.95rem; }
.summary-divider { border: none; border-top: 1px solid var(--gray-200); margin: 1.5rem 0; }
.summary-total { display: flex; justify-content: space-between; font-weight: 800; font-size: 1.5rem; color: var(--primary); }
.privacy-terms { display: flex; gap: 1rem; margin: 2.5rem 0; padding: 1.5rem; background: var(--gray-50); border-radius: var(--radius-lg); align-items: flex-start; border: 1px solid var(--gray-100); }
.privacy-label { font-size: 0.85rem; line-height: 1.6; color: var(--gray-600); font-weight: 500; cursor: pointer; }
.checkout-submit-btn { margin: 1rem auto 0; display: flex !important; max-width: 350px; height: 54px; font-size: 1rem !important; }
.pix-container { max-width: 500px; margin: 0 auto; text-align: center; padding: 3rem; display: none !important; flex-direction: column; align-items: center; gap: 2rem; background: var(--white); border-radius: var(--radius-xl); border: 1px solid var(--gray-100); }
.pix-container.show { display: flex !important; }
.pix-qr-box { background: var(--white); padding: 1.5rem; border-radius: var(--radius-xl); border: 1px solid var(--gray-100); box-shadow: var(--shadow-lg); width: fit-content; }
.pix-qr-img { width: 220px; height: 220px; display: block; }
.pix-key-box { width: 100%; }
.pix-label { color: var(--gray-400); font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }
.pix-key { font-size: 1.25rem; font-weight: 800; color: var(--accent); margin: 0.5rem 0 1.5rem; padding: 1rem; background: var(--gray-50); border-radius: var(--radius-md); }
.value-highlight { font-size: 2rem; font-weight: 800; color: var(--primary); }
input.invalid { border-color: var(--error) !important; background-color: #fffafb; }
input.valid { border-color: var(--success) !important; background-color: #f6fff9; }
.error-message { color: var(--error); font-size: 0.75rem; font-weight: 700; margin-top: 0.25rem; }

/* --- FOOTER --- */
.footer { background: var(--gray-900); color: var(--white); padding: 6rem 0 3rem 0; }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 4rem; margin-bottom: 4rem; }
.footer-logo { font-size: 1.5rem; font-weight: 800; margin-bottom: 1.5rem; }
.footer-logo span { color: var(--accent); }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.75rem; }
.footer-links a { color: var(--gray-400); font-size: 0.875rem; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--gray-800); padding-top: 2rem; color: var(--gray-500); font-size: 0.75rem; text-align: center; }

/* --- TOAST SYSTEM --- */
#toast-container { position: fixed; top: 30px; right: 30px; display: flex; flex-direction: column; gap: 12px; z-index: 10000; pointer-events: none; }
.toast { min-width: 320px; max-width: 450px; padding: 1rem 1.5rem; background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); border-left: 6px solid var(--gray-300); display: flex; align-items: center; justify-content: space-between; gap: 1rem; pointer-events: auto; animation: m3-enter 0.4s cubic-bezier(0.2, 0, 0, 1) forwards; }
.toast.success { border-left-color: var(--success); background: #f0fdf4; }
.toast.error { border-left-color: var(--error); background: #fef2f2; }
.toast.info { border-left-color: var(--accent); background: #eff6ff; }
.toast-message { font-size: 0.9rem; font-weight: 600; color: var(--gray-800); flex: 1; }
.toast-close { background: none; border: none; font-size: 1.5rem; color: var(--gray-300); cursor: pointer; line-height: 1; transition: var(--transition); }
.toast-close:hover { color: var(--primary); }
.toast.hiding { animation: toast-out 0.3s ease forwards; }
@keyframes toast-out { from { opacity: 1; transform: scale(1); } to { opacity: 0; transform: scale(0.9); } }

/* --- ANIMATIONS --- */
@keyframes m3-enter { 0% { opacity: 0; transform: scale(0.9) translateY(10px); filter: blur(4px); } 100% { opacity: 1; transform: scale(1) translateY(0); filter: blur(0); } }

/* --- UTILITIES --- */
.hidden { display: none !important; }

/* --- MOBILE RESPONSIVENESS OVERRIDES --- */
@media (max-width: 768px) {
    .section { padding: 3rem 0; }
    .container { padding: 0 1.25rem; }
    #products { margin-top: 2rem; }
    #about { margin-top: 3rem; margin-bottom: 3rem; }
    .product-detail-grid { margin-top: 2rem; margin-bottom: 4rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 2.5rem; text-align: center; }
    .checkout-wrapper { padding: 1.5rem; }
    .metrics-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
    .metrics-grid { grid-template-columns: 1fr; }
}