/* ========================================
   Table Tennis SB - Modern Marketing Site
   ======================================== */

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

:root {
    /* Brand Colors - Matching app gradient */
    --primary-blue: #4169E1;
    --primary-purple: #8B5CF6;
    --primary-pink: #EC4899;
    --gradient-start: #4169E1;
    --gradient-end: #EC4899;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    
    /* Spacing */
    --container-padding: 1.5rem;
    --section-padding: 6rem 0;
}

body {
    font-family: var(--font-sans);
    color: var(--gray-900);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo {
    height: 40px;
    width: auto;
    border-radius: 8px;
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-900);
    transition: all 0.3s ease;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    position: relative;
    padding: 140px 0 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #4169E1 0%, #8B5CF6 50%, #EC4899 100%);
    opacity: 0.05;
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--gray-900);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-purple) 50%, var(--primary-pink) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn-hero {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-purple) 100%);
    color: var(--white);
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.125rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 10px 25px rgba(65, 105, 225, 0.3);
}

.btn-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(65, 105, 225, 0.4);
}

.btn-secondary {
    padding: 1rem 2rem;
    background: var(--white);
    color: var(--gray-900);
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.125rem;
    border: 2px solid var(--gray-200);
    transition: all 0.3s ease;
}

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

.btn-primary {
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-purple) 100%);
    color: var(--white);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: transform 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: left;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-top: 0.25rem;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-showcase {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 24px;
    box-shadow: var(--shadow-xl);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* ========================================
   Features Section
   ======================================== */

.features {
    padding: var(--section-padding);
    background: var(--gray-50);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.section-description {
    font-size: 1.25rem;
    color: var(--gray-600);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--gray-200);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--gray-900);
}

.feature-description {
    color: var(--gray-600);
    line-height: 1.6;
}

/* ========================================
   Pricing Section
   ======================================== */

.pricing {
    padding: var(--section-padding);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: 20px;
    padding: 2.5rem;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border-color: var(--primary-blue);
    background: linear-gradient(135deg, rgba(65, 105, 225, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-purple) 100%);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
}

.pricing-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.pricing-price {
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 0.5rem;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-period {
    font-size: 1rem;
    color: var(--gray-600);
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
}

.btn-pricing {
    display: block;
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-purple) 100%);
    color: var(--white);
    text-align: center;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-pricing:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(65, 105, 225, 0.3);
}

.trial-notice {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* ========================================
   Download Section
   ======================================== */

.download {
    padding: var(--section-padding);
    background: linear-gradient(135deg, #4169E1 0%, #8B5CF6 50%, #EC4899 100%);
}

.download-content {
    text-align: center;
    color: var(--white);
}

.download-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.download-description {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.store-button {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: var(--white);
    color: var(--gray-900);
    text-decoration: none;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.store-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.store-icon {
    width: 32px;
    height: 32px;
    fill: var(--gray-900);
}

.store-text {
    text-align: left;
}

.store-label {
    font-size: 0.75rem;
    color: var(--gray-600);
}

.store-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo {
    height: 40px;
    width: auto;
    border-radius: 8px;
}

.footer-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--white);
}

.footer-description {
    color: var(--gray-400);
    line-height: 1.6;
}

.footer-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-800);
    color: var(--gray-500);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .download-title {
        font-size: 2rem;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .store-button {
        width: 100%;
        max-width: 300px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
        --section-padding: 4rem 0;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .btn-hero, .btn-secondary {
        font-size: 1rem;
        padding: 0.875rem 1.5rem;
    }
}