:root {
    /* Primary Brand Color */
    --color-primary: #2D6A4F; /* Deep Green - Trust, reliability, balance */
    
    /* Accent / Secondary Colors */
    --color-accent-orange: #FF6B35; /* Warm Orange - Attention-grabbing */
    --color-accent-yellow: #FFD166; /* Golden Yellow - Friendly, optimistic */
    
    /* Neutral / Background */
    --bg-light: #F8F9FA; /* Light Gray/Off-White - Clean background */
    --bg-white: #FFFFFF; /* White - Card/product background */
    --text-dark: #212529; /* Dark Gray/Charcoal - High readability text */
    
    /* Supporting Colors */
    --color-blue: #118AB2; /* Cool Blue - Links, trust-building elements */
    --color-mint: #06D6A0; /* Mint Green - Success, in stock labels */
    
    /* Derived Colors */
    --color-orange-hover: #E85D2A; /* Slightly darker orange for hover */
    --color-primary-hover: #24583E; /* Slightly darker green for hover */
    --color-disabled-bg: #CED4DA; /* Muted Gray for disabled buttons */
    --color-disabled-text: #6C757D; /* Muted text for disabled buttons */
    --bg-hover: #E9ECEF; /* Light hover effect */
    --border-primary: #DEE2E6; /* Light border */
    --border-secondary: #ADB5BD; /* Medium border */
    --border-hover: #6C757D; /* Darker border on hover */
    
    /* Typography System */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Monaco, monospace;
    --font-display: 'Playfair Display', serif;
    --font-script: 'Dancing Script', cursive;
    
    /* Spacing & Animation */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Border Radius & Shadows */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Mobile-First Hybrid Design System */
.container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 48rem) {
    .container {
        padding: 0 var(--space-6);
    }
}

@media (min-width: 64rem) {
    .container {
        max-width: 1200px;
        padding: 0 var(--space-8);
    }
}

@media (min-width: 80rem) {
    .container {
        max-width: 1400px;
    }
}

/* Stunning Animated Logo */
.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-6);
    perspective: 1000px;
}

.logo {
    position: relative;
    font-size: 2.5rem;
    font-weight: 700;
    font-family: var(--font-display);
    cursor: pointer;
    transition: var(--transition-slow);
    transform-style: preserve-3d;
}

@media (min-width: 768px) {
    .logo {
        font-size: 3.5rem;
    }
}

.logo-text {
    position: relative;
    display: inline-block;
    background: linear-gradient(
        45deg,
        var(--color-primary) 0%,
        var(--color-accent-orange) 25%,
        var(--color-mint) 50%,
        var(--color-blue) 75%,
        var(--color-accent-yellow) 100%
    );
    background-size: 400% 400%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: colorCycle 4s ease-in-out infinite;
}

.logo-text::before {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    background: linear-gradient(
        45deg,
        var(--color-red) 0%,
        var(--color-primary) 25%,
        var(--color-accent-orange) 50%,
        var(--color-mint) 75%,
        var(--color-blue) 100%
    );
    background-size: 400% 400%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: colorCycle 4s ease-in-out infinite reverse;
    opacity: 0.7;
    transform: translateZ(-10px) rotateY(180deg);
}

.logo-particles {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    opacity: 0;
}

.particle:nth-child(1) { background: var(--color-primary); animation: float1 3s infinite; }
.particle:nth-child(2) { background: var(--color-accent-orange); animation: float2 3s infinite 0.5s; }
.particle:nth-child(3) { background: var(--color-mint); animation: float3 3s infinite 1s; }
.particle:nth-child(4) { background: var(--color-blue); animation: float4 3s infinite 1.5s; }
.particle:nth-child(5) { background: var(--color-accent-yellow); animation: float5 3s infinite 2s; }
.particle:nth-child(6) { background: var(--color-red); animation: float6 3s infinite 2.5s; }

.logo:hover .logo-text {
    transform: rotateY(10deg) rotateX(5deg) scale(1.05);
    text-shadow: 0 0 30px var(--color-primary);
}

.logo:hover .particle {
    animation-duration: 1s;
}

/* Enhanced Header Title - Postio Style */
.header-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 8vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-4);
    line-height: 1.3;
}

.title-postio {
    color: var(--color-primary);
    display: inline;
}

.title-smtp {
    color: var(--text-dark);
    display: inline;
    margin: 0 var(--space-2);
}

.title-store {
    font-family: var(--font-script);
    color: var(--color-accent-yellow);
    display: inline;
    font-size: 0.85em;
    transform: rotate(-1deg);
    display: inline-block;
    margin-left: var(--space-1);
}

/* Info Banner */
.info-banner {
    background: linear-gradient(90deg, var(--bg-light), var(--bg-white), var(--bg-light));
    border-bottom: 1px solid var(--border-primary);
    padding: var(--space-3) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.info-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--color-mint), transparent);
    animation: shimmer 3s infinite;
}

.info-banner.hidden {
    display: none;
}

.info-banner-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    color: var(--text-dark);
    position: relative;
    z-index: 1;
}

.banner-close {
    position: absolute;
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-dark);
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius);
    transition: var(--transition-fast);
    z-index: 2;
}

.banner-close:hover {
    color: var(--color-red);
    background: var(--color-red-soft);
}

/* Header with Elegant Background Gradient */
.header {
    background: 
        radial-gradient(ellipse at center, rgba(45, 106, 79, 0.08) 0%, transparent 70%),
        radial-gradient(ellipse at 80% 20%, rgba(255, 165, 2, 0.06) 0%, transparent 50%),
        var(--bg-light);
    border-bottom: 1px solid var(--border-primary);
    padding: var(--space-8) 0;
    position: relative;
    overflow: hidden;
}

.header-subtitle {
    font-size: 1.125rem;
    color: var(--text-dark);
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

/* Navigation */
.nav-container {
    background: var(--bg-white);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin: var(--space-6) 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-6);
}

.nav-item {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition-fast);
    font-weight: 500;
    border: 1px solid transparent;
}

.nav-item.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--bg-white);
}

.nav-item:hover:not(.active) {
    background: var(--bg-hover);
    color: var(--text-dark);
}

/* Telegram Button */
.telegram-btn {
    background: linear-gradient(135deg, var(--color-blue) 0%, #00c4cc 100%);
    color: var(--bg-white);
    border: none;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.telegram-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.telegram-btn:hover {
    background: linear-gradient(135deg, #0A6E8C 0%, #00D4E6 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(17, 138, 178, 0.3);
}

.telegram-btn:hover::before {
    left: 100%;
}

/* Payment Loading State */
.payment-loading {
    display: none;
    text-align: center;
    padding: var(--space-8);
    color: var(--text-dark);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-secondary);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-4);
}

/* Payment Status */
.payment-status {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: var(--space-4);
    margin: var(--space-4) 0;
    display: none;
}

.payment-status.success {
    border: 1px solid var(--color-mint);
    background: var(--color-mint);
    color: var(--bg-white);
}

.payment-status.error {
    border: 1px solid var(--color-red);
    background: var(--color-red-soft);
}

.payment-status.pending {
    border: 1px solid var(--color-accent-orange);
    background: var(--color-accent-orange);
    color: var(--bg-white);
}

/* Controls */
.controls {
    background: var(--bg-white);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin: var(--space-8) 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

@media (min-width: 768px) {
    .controls {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.search-filter {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

@media (min-width: 640px) {
    .search-filter {
        flex-direction: row;
        align-items: center;
    }
}

.search-input,
.filter-select {
    padding: var(--space-3) var(--space-4);
    background: var(--bg-light);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius);
    color: var(--text-dark);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.search-input {
    min-width: 300px;
}

.search-input:focus,
.filter-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary);
}

.search-input::placeholder {
    color: var(--text-dark);
}

.stats {
    display: flex;
    gap: var(--space-6);
    font-size: 0.875rem;
    color: var(--text-dark);
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
}

/* Mobile-First Main Content Grid */
.main-content {
    display: block;
}

@media (min-width: 48rem) {
    .main-content {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
}

@media (min-width: 64rem) {
    .main-content {
        grid-template-columns: 1fr 350px;
        gap: var(--space-8);
    }
}

@media (min-width: 80rem) {
    .main-content {
        grid-template-columns: 1fr 400px;
    }
}

/* Table */
.table-container {
    background: var(--bg-white);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table-header {
    display: none;
    grid-template-columns: 2fr 1fr 1fr 1fr auto;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-6);
    background: var(--bg-light);
    border-bottom: 1px solid var(--border-primary);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-dark);
}

@media (min-width: 768px) {
    .table-header {
        display: grid;
    }
}

.table-row {
    display: grid;
    grid-template-areas: 
        "service service"
        "type stock"
        "price quantity"
        "action action";
    gap: var(--space-3);
    padding: var(--space-6);
    border-bottom: 1px solid var(--border-primary);
    transition: var(--transition-fast);
}

@media (min-width: 768px) {
    .table-row {
        grid-template-areas: "service type stock price quantity";
        grid-template-columns: 2fr 1fr 1fr 1fr auto;
        align-items: center;
        gap: var(--space-4);
    }
}

.table-row:last-child {
    border-bottom: none;
}

.table-row:hover {
    background: var(--bg-hover);
}

/* Service Info */
.service-info {
    grid-area: service;
}

.service-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--space-1);
}

.service-description {
    font-size: 0.875rem;
    color: var(--text-dark);
    line-height: 1.4;
}

/* Service Type */
.service-type {
    grid-area: type;
    display: flex;
    align-items: flex-start;
}

@media (min-width: 768px) {
    .service-type {
        justify-content: center;
    }
}

.type-badge {
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.type-badge.smtp {
    background: var(--color-mint);
    color: var(--bg-white);
}

.type-badge.premium {
    background: var(--color-primary);
    color: var(--bg-white);
}

.type-badge.enterprise {
    background: var(--bg-light);
    color: var(--text-dark);
    border: 1px solid var(--border-secondary);
}

/* Stock Info */
.stock-info {
    grid-area: stock;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

@media (min-width: 768px) {
    .stock-info {
        align-items: center;
    }
}

.stock-count {
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-mono);
}

.stock-count.high {
    color: var(--color-mint);
}

.stock-count.medium {
    color: var(--color-accent-orange);
}

.stock-count.low {
    color: var(--color-red);
}

.stock-label {
    font-size: 0.75rem;
    color: var(--text-dark);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Price Info */
.price-info {
    grid-area: price;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

@media (min-width: 768px) {
    .price-info {
        align-items: center;
    }
}

.price-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    font-family: var(--font-mono);
}

.price-currency {
    font-size: 0.875rem;
    color: var(--text-dark);
}

/* Quantity Selector */
.quantity-selector {
    grid-area: quantity;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: var(--bg-light);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius);
    padding: var(--space-1);
}

.qty-btn {
    background: none;
    border: none;
    color: var(--text-dark);
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qty-btn:hover {
    background: var(--bg-hover);
    color: var(--text-dark);
}

.qty-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.qty-input {
    background: none;
    border: none;
    color: var(--text-dark);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    text-align: center;
    width: 40px;
    outline: none;
}

/* Add to Cart Button */
.btn-add-cart {
    background: var(--color-accent-orange);
    color: var(--bg-white);
    border: none;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.btn-add-cart::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.btn-add-cart:hover {
    background: var(--color-orange-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.btn-add-cart:hover::before {
    left: 100%;
}

.btn-add-cart:active {
    transform: translateY(0);
}

.btn-add-cart:disabled {
    background: var(--color-disabled-bg);
    color: var(--color-disabled-text);
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-add-cart.added {
    background: var(--color-accent-yellow);
    color: var(--text-dark);
}

.btn-add-cart.added:hover {
    background: #FFC107;
}

/* Dedicated Cart Sidebar */
.cart-sidebar {
    background: var(--bg-white);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    height: fit-content;
    position: sticky;
    top: var(--space-6);
}

.cart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--border-primary);
}

.cart-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.cart-count {
    background: var(--color-primary);
    color: var(--bg-white);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 600;
    min-width: 20px;
    text-align: center;
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    max-height: 400px;
    overflow-y: auto;
}

.cart-item {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: var(--space-3);
    border: 1px solid var(--border-primary);
}

.cart-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-2);
}

.cart-item-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1.3;
}

.cart-item-remove {
    background: none;
    border: none;
    color: var(--color-red);
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.cart-item-remove:hover {
    background: var(--color-red-soft);
}

.cart-item-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-item-quantity {
    font-size: 0.875rem;
    color: var(--text-dark);
}

.cart-item-price {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-mint);
    font-family: var(--font-mono);
}

.cart-empty {
    text-align: center;
    padding: var(--space-8) var(--space-4);
    color: var(--text-dark);
}

.cart-empty-icon {
    font-size: 2rem;
    margin-bottom: var(--space-2);
    opacity: 0.5;
}

.cart-total {
    padding: var(--space-4);
    background: var(--bg-light);
    border-radius: var(--radius);
    margin-bottom: var(--space-4);
    border: 1px solid var(--border-primary);
}

.cart-total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

.cart-total-row:last-child {
    margin-bottom: 0;
    padding-top: var(--space-2);
    border-top: 1px solid var(--border-primary);
    font-weight: 700;
}

.cart-total-label {
    color: var(--text-dark);
    font-size: 0.875rem;
}

.cart-total-value {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--text-dark);
}

.cart-total-final {
    color: var(--color-mint);
    font-size: 1.125rem;
}

.cart-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.btn-checkout {
    background: var(--color-primary);
    color: var(--text-dark);
    border: none;
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-checkout::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.btn-checkout:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(45, 106, 79, 0.3);
}

.btn-checkout:hover::before {
    left: 100%;
}

.btn-checkout:disabled {
    background: var(--color-disabled-bg);
    color: var(--color-disabled-text);
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-clear {
    background: none;
    border: 1px solid var(--border-secondary);
    color: var(--text-dark);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-clear:hover {
    border-color: var(--color-red);
    color: var(--color-red);
    background: var(--color-red-soft);
}

/* Modals */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-white);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95) translateY(20px);
    transition: var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    text-align: center;
    margin-bottom: var(--space-6);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--space-2);
}

.modal-subtitle {
    color: var(--text-dark);
}

/* Payment Interface */
.payment-interface {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: var(--space-6);
    margin: var(--space-4) 0;
}

.crypto-selector {
    margin-bottom: var(--space-4);
}

.crypto-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.crypto-option {
    padding: var(--space-3);
    background: var(--bg-light);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius);
    cursor: pointer;
    text-align: center;
    transition: var(--transition-fast);
}

.crypto-option:hover {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: var(--bg-white);
}

.crypto-option.selected {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: var(--bg-white);
}

.payment-details {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: var(--space-4);
    margin: var(--space-4) 0;
    border: 1px solid var(--border-primary);
}

.payment-address {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    word-break: break-all;
    background: var(--bg-white);
    padding: var(--space-3);
    border-radius: var(--radius);
    border: 1px solid var(--border-secondary);
}

.qr-code {
    text-align: center;
    margin: var(--space-4) 0;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-16) var(--space-4);
    color: var(--text-dark);
}

.empty-state-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--space-2);
}

/* Animations */
@keyframes colorCycle {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes float1 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); opacity: 0; }
    20% { opacity: 1; }
    50% { transform: translate(30px, -40px) rotate(180deg); opacity: 1; }
    80% { opacity: 1; }
}

@keyframes float2 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); opacity: 0; }
    20% { opacity: 1; }
    50% { transform: translate(-35px, -30px) rotate(-180deg); opacity: 1; }
    80% { opacity: 1; }
}

@keyframes float3 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); opacity: 0; }
    20% { opacity: 1; }
    50% { transform: translate(25px, 35px) rotate(90deg); opacity: 1; }
    80% { opacity: 1; }
}

@keyframes float4 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); opacity: 0; }
    20% { opacity: 1; }
    50% { transform: translate(-40px, 20px) rotate(-90deg); opacity: 1; }
    80% { opacity: 1; }
}

@keyframes float5 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); opacity: 0; }
    20% { opacity: 1; }
    50% { transform: translate(20px, -25px) rotate(270deg); opacity: 1; }
    80% { opacity: 1; }
}

@keyframes float6 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); opacity: 0; }
    20% { opacity: 1; }
    50% { transform: translate(-30px, -35px) rotate(-270deg); opacity: 1; }
    80% { opacity: 1; }
}

/* Responsive Design */
@media (max-width: 1023px) {
    .cart-sidebar {
        order: -1;
        position: static;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 var(--space-3);
    }
    
    .controls {
        padding: var(--space-4);
    }
    
    .search-input {
        min-width: auto;
        width: 100%;
    }
    
    .stats {
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--space-4);
    }
    
    .cart-actions {
        flex-direction: column;
    }
    
    .quantity-selector {
        justify-self: stretch;
    }
    
    .nav-container {
        flex-direction: column;
        gap: var(--space-3);
        text-align: center;
    }
}
.notice-banner {
    background-color: #f0f0f0;
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 0.5rem;
    text-align: center;
    color: #333;
    font-size: 0.9rem;
}