/* ============================================
   GO-4-SERVER.COM - Main Stylesheet
   ============================================ */

/* CSS Variables for Branding */
:root {
    /* Primary Brand Colors */
    --primary-color: #0066FF;
    --primary-dark: #0052CC;
    --primary-light: #3385FF;
    
    /* Accent Colors */
    --accent-color: #00D9FF;
    --accent-dark: #00B8D9;
    
    /* Neutral Colors */
    --dark: #1A1A2E;
    --dark-secondary: #16213E;
    --gray-dark: #2D3748;
    --gray: #4A5568;
    --gray-light: #718096;
    --gray-lighter: #E2E8F0;
    --light: #F7FAFC;
    --white: #FFFFFF;
    
    /* Status Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* 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: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 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);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

/* SVG Icons Base Styles */
svg {
    display: inline-block;
    vertical-align: middle;
}

svg[aria-hidden="true"] {
    pointer-events: none;
}

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

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: baseline;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
}

.logo {
    color: var(--primary-color);
}

.logo-dot {
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--gray-dark);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-fast);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: all var(--transition-fast);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    margin-top: 80px;
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--light) 0%, var(--white) 100%);
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

.hero-title .highlight {
    color: var(--primary-color);
    display: block;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

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

.server-icon {
    width: 20rem;
    height: 20rem;
    opacity: 0.6;
    color: var(--primary-color);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.55; }
    50% { transform: scale(1.05); opacity: 0.65; }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

/* ============================================
   Section Styles
   ============================================ */
section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.section-subtitle {
    font-size: 1.125rem;
    text-align: center;
    color: var(--gray);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Why Server Section
   ============================================ */
.why-server {
    background: var(--white);
}

.reasons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.reason-card {
    background: var(--light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-lighter);
}

.reason-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.reason-icon {
    width: 3rem;
    height: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
    flex-shrink: 0;
}

.reason-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.reason-card p {
    color: var(--gray);
    line-height: 1.7;
}

/* ============================================
   Services Section
   ============================================ */
.services {
    background: linear-gradient(180deg, var(--white) 0%, var(--light) 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.service-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border-top: 4px solid var(--primary-color);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.service-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.service-icon {
    width: 2.5rem;
    height: 2.5rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark);
}

.service-features {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.service-features li {
    padding: var(--spacing-xs) 0;
    color: var(--gray);
    position: relative;
    padding-left: var(--spacing-md);
}

.service-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.service-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.service-link:hover {
    color: var(--primary-dark);
}

/* ============================================
   Features Section
   ============================================ */
.features {
    background: var(--white);
}

.features-content {
    max-width: 900px;
    margin: 0 auto;
}

.features-list {
    display: grid;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.feature-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--light);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.feature-item:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.feature-check {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.25rem;
}

.feature-text h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--dark);
}

.feature-text p {
    color: var(--gray);
    line-height: 1.6;
}

/* ============================================
   Stats Section
   ============================================ */
.stats {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-2xl) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    text-align: center;
}

.stat-item {
    padding: var(--spacing-md);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.stat-label {
    font-size: 1.125rem;
    opacity: 0.9;
    font-weight: 500;
}

/* ============================================
   Locations Section
   ============================================ */
.locations {
    background: var(--light);
    padding: var(--spacing-2xl) 0;
}

.locations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.location-group {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

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

.location-region {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-color);
}

.location-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.location-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.location-item:hover {
    background: var(--light);
}

.location-flag {
    font-size: 2rem;
    flex-shrink: 0;
}

.location-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: var(--spacing-xs);
}

.location-info p {
    font-size: 0.875rem;
    color: var(--gray);
    margin: 0;
}

.locations-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-lighter);
}

.benefit-item {
    text-align: center;
    padding: var(--spacing-md);
}

.benefit-icon {
    width: 3rem;
    height: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
    margin-left: auto;
    margin-right: auto;
}

.benefit-item h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: var(--spacing-xs);
}

.benefit-item p {
    color: var(--gray);
    font-size: 0.9375rem;
    margin: 0;
}

/* ============================================
   CTA Section
   ============================================ */
.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: var(--spacing-2xl) 0;
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.cta p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cta .btn-primary {
    background: var(--white);
    color: var(--primary-color);
}

.cta .btn-primary:hover {
    background: var(--light);
}

.cta .btn-secondary {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.cta .btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark);
    color: var(--gray-lighter);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-brand .logo {
    color: var(--primary-color);
}

.footer-brand .logo-dot {
    color: var(--accent-color);
}

.footer-brand p {
    margin-top: var(--spacing-sm);
    color: var(--gray-light);
}

.footer-column h4 {
    color: var(--white);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    list-style: none;
}

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

.footer-column a {
    color: var(--gray-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-column li:not(:has(a)) {
    color: var(--gray-light);
    font-size: 0.9375rem;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-dark);
    color: var(--gray-light);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateX(0);
        display: flex;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu a {
        display: block;
        padding: var(--spacing-sm) 0;
        width: 100%;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .reasons-grid,
    .services-grid,
    .locations-grid,
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .locations-benefits {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .cta .btn {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}