/* ===============================================
   DESIGN SYSTEM - CSS CUSTOM PROPERTIES
   =============================================== */
:root {
    /* Color Palette - Vibrant Dark Theme */
    --color-bg-primary: #0a0b14;
    --color-bg-secondary: #12131f;
    --color-bg-tertiary: #1a1b2e;

    /* Glassmorphism */
    --glass-bg: rgba(26, 27, 46, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: rgba(0, 0, 0, 0.3);

    /* Accent Colors - Vibrant Gradients */
    --color-primary: #8b5cf6;
    --color-primary-dark: #7c3aed;
    --color-secondary: #06b6d4;
    --color-accent: #ec4899;
    --color-success: #10b981;
    --color-warning: #f59e0b;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);
    --gradient-accent: linear-gradient(135deg, #ec4899 0%, #f59e0b 100%);
    --gradient-hero: linear-gradient(180deg, #0a0b14 0%, #1a1b2e 100%);

    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.3);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Layout */
    --container-max: 1280px;
    --header-height: 80px;
}

/* ===============================================
   RESET & BASE STYLES
   =============================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    overflow-x: hidden;
}

/* ===============================================
   TYPOGRAPHY
   =============================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: var(--spacing-sm);
}

/* ===============================================
   LAYOUT
   =============================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===============================================
   HEADER
   =============================================== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--spacing-md);
}

.logo {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    transition: transform var(--transition-base);
}

.logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

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

.nav-link:hover::after {
    width: 100%;
}

/* ===============================================
   HERO SECTION
   =============================================== */
.hero {
    position: relative;
    padding: var(--spacing-2xl) 0;
    background: var(--gradient-hero);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 0%, rgba(139, 92, 246, 0.15), transparent 70%);
    pointer-events: none;
}

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

.hero h1 {
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* Search Bar */
.search-container {
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    transition: all var(--transition-base);
}

.search-wrapper:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2), var(--shadow-glow);
}

.search-icon {
    color: var(--color-text-secondary);
    font-size: 1.25rem;
    margin-left: var(--spacing-xs);
}

.search-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-size: 1rem;
    font-family: var(--font-primary);
    outline: none;
    padding: var(--spacing-xs);
}

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

.search-btn {
    background: var(--gradient-primary);
    border: none;
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-base);
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

/* ===============================================
   CATEGORIES
   =============================================== */
.categories {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-secondary);
}

.category-tabs {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.category-tab {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    color: var(--color-text-secondary);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.category-tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.category-tab:hover,
.category-tab.active {
    color: var(--color-text-primary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.category-tab.active::before {
    opacity: 1;
}

/* ===============================================
   GAMES GRID
   =============================================== */
.games-section {
    padding: var(--spacing-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.game-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 0;
}

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
    border-color: var(--color-primary);
}

.game-card:hover::before {
    opacity: 0.1;
}

.game-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, #1a1b2e 0%, #2d2e4a 100%);
}

.game-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.game-card:hover .game-image img {
    transform: scale(1.1);
}

.game-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--gradient-accent);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    z-index: 1;
}

.game-info {
    position: relative;
    padding: var(--spacing-md);
    z-index: 1;
}

.game-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.game-category {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.game-description {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.game-btn {
    width: 100%;
    background: var(--gradient-primary);
    border: none;
    color: white;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-base);
}

.game-btn:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* ===============================================
   FEATURES SECTION
   =============================================== */
.features {
    padding: var(--spacing-2xl) 0;
    background: var(--color-bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* ===============================================
   FOOTER
   =============================================== */
.footer {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--glass-border);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* ===============================================
   CHECKOUT MODAL
   =============================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    animation: fadeIn 0.3s ease-out;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 11, 20, 0.9);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    max-width: 700px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.4s ease-out;
    z-index: 1;
}

.modal-content::-webkit-scrollbar {
    width: 8px;
}

.modal-content::-webkit-scrollbar-track {
    background: var(--color-bg-tertiary);
    border-radius: 4px;
}

.modal-content::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 4px;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--glass-border);
    color: var(--color-text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: var(--color-primary);
    color: white;
    transform: rotate(90deg);
}

.modal-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--glass-border);
}

.modal-header h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-xs);
}

.modal-header p {
    color: var(--color-text-secondary);
    margin: 0;
}

/* Checkout Form */
.checkout-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.form-section {
    background: rgba(26, 27, 46, 0.4);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
}

.form-section h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    font-size: 0.9rem;
}

.form-group input,
.form-group select {
    width: 100%;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--glass-border);
    color: var(--color-text-primary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.form-group small {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

/* Packages Grid */
.packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--spacing-sm);
}

.package-option {
    cursor: pointer;
}

.package-option input[type="radio"] {
    display: none;
}

.package-card {
    background: var(--color-bg-tertiary);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.package-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 0;
}

.package-option input[type="radio"]:checked+.package-card {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.package-option input[type="radio"]:checked+.package-card::before {
    opacity: 0.15;
}

.package-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.package-amount {
    position: relative;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
    z-index: 1;
}

.package-price {
    position: relative;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    z-index: 1;
}

.package-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    background: var(--gradient-accent);
    color: white;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    z-index: 1;
}

/* Payment Methods */
.payment-methods {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-sm);
}

.payment-option {
    cursor: pointer;
}

.payment-option input[type="radio"] {
    display: none;
}

.payment-card {
    background: var(--color-bg-tertiary);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-base);
    cursor: pointer;
}

.payment-option input[type="radio"]:checked+.payment-card {
    border-color: var(--color-primary);
    background: rgba(139, 92, 246, 0.1);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.payment-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.payment-icon {
    font-size: 2rem;
}

/* Order Summary */
.order-summary {
    background: rgba(26, 27, 46, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.summary-row.total {
    border-top: 2px solid var(--glass-border);
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-md);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.summary-row.total span:last-child {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Checkout Button */
.checkout-btn {
    width: 100%;
    background: var(--gradient-primary);
    border: none;
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.checkout-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

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

.btn-icon {
    font-size: 1.5rem;
    transition: transform var(--transition-base);
}

.checkout-btn:hover .btn-icon {
    transform: translateX(5px);
}

/* ===============================================
   ANIMATIONS
   =============================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* ===============================================
   RESPONSIVE DESIGN
   =============================================== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .games-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: var(--spacing-md);
    }

    .category-tabs {
        gap: var(--spacing-xs);
    }

    .category-tab {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .games-grid {
        grid-template-columns: 1fr;
    }
}

/* ===============================================
   UTILITY CLASSES
   =============================================== */
.hidden {
    display: none !important;
}

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

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}