/* ===================================
   SYSEAGLES - Enterprise Landing Page
   Color Scheme: Black, Red, Dark Gray
   =================================== */

/* ===================================
   ROOT VARIABLES
   =================================== */
:root {
    /* Colors */
    --color-black: #000000;
    --color-red-primary: #DC143C;
    --color-red-secondary: #E31E24;
    --color-dark-gray-1: #1a1a1a;
    --color-dark-gray-2: #2d2d2d;
    --color-dark-gray-3: #404040;
    --color-white: #ffffff;
    --color-light-gray: #cccccc;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    --shadow-red: 0 4px 20px rgba(220, 20, 60, 0.3);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-regular);
    line-height: 1.6;
    color: var(--color-white);
    background-color: var(--color-black);
    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, 6vw, 4.5rem);
    font-weight: var(--font-weight-black);
}

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

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: var(--font-weight-bold);
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-normal);
}

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

/* ===================================
   HEADER & NAVIGATION
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-dark-gray-2);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    min-height: 80px;
}

.nav-logo .logo {
    height: 100px;
    width: auto;
    transition: transform var(--transition-normal);
}

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

.nav-contact .nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-red-primary);
    border-radius: 4px;
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-normal);
}

.nav-contact .nav-link:hover {
    background-color: var(--color-red-secondary);
    box-shadow: var(--shadow-red);
    transform: translateY(-2px);
}

.nav-contact .nav-link i {
    font-size: 1rem;
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-black) 0%, var(--color-dark-gray-1) 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* Network Animation SVG */
.network-animation {
    width: 100%;
    height: 100%;
    opacity: 0.6;
}

.network-line {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawLine 3s ease-in-out forwards;
}

@keyframes drawLine {
    to {
        stroke-dashoffset: 0;
    }
}

.line-1 { animation-delay: 0s; }
.line-2 { animation-delay: 0.2s; }
.line-3 { animation-delay: 0.4s; }
.line-4 { animation-delay: 0.6s; }
.line-5 { animation-delay: 0.8s; }
.line-6 { animation-delay: 1s; }
.line-7 { animation-delay: 1.2s; }
.line-8 { animation-delay: 1.4s; }

.main-node {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        r: 20;
        opacity: 1;
    }
    50% {
        r: 24;
        opacity: 0.8;
    }
}

.node-pulse {
    animation: pulsering 2s ease-out infinite;
}

@keyframes pulsering {
    0% {
        r: 20;
        opacity: 1;
    }
    100% {
        r: 50;
        opacity: 0;
    }
}

.secondary-node {
    opacity: 0;
    animation: fadeInNode 0.8s ease-in forwards;
}

@keyframes fadeInNode {
    to {
        opacity: 1;
    }
}

.node-delay-1 { animation-delay: 1.5s; }
.node-delay-2 { animation-delay: 1.7s; }
.node-delay-3 { animation-delay: 1.9s; }
.node-delay-4 { animation-delay: 2.1s; }
.node-delay-5 { animation-delay: 2.3s; }
.node-delay-6 { animation-delay: 2.5s; }

.data-packet {
    filter: url(#glow);
}

/* Hero Content */
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 4px 20px rgba(220, 20, 60, 0.5);
    letter-spacing: 2px;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: var(--font-weight-semibold);
    color: var(--color-red-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-tagline {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-light-gray);
    font-weight: var(--font-weight-light);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 4px;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--color-red-secondary);
    box-shadow: var(--shadow-red);
    transform: translateY(-3px);
}

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

.btn-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-black);
    transform: translateY(-3px);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

.scroll-indicator i {
    font-size: 2rem;
    color: var(--color-red-primary);
}

/* ===================================
   SERVICES SECTION
   =================================== */
.services {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-dark-gray-1);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--color-red-primary);
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-light-gray);
    font-weight: var(--font-weight-light);
}

.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-color: var(--color-dark-gray-2);
    padding: var(--spacing-xl);
    border-radius: 8px;
    border: 1px solid transparent;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(20px);
}

.service-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.service-card:hover {
    border-color: var(--color-red-primary);
    box-shadow: var(--shadow-red);
    transform: translateY(-5px);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--color-red-primary), var(--color-red-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    transition: transform var(--transition-normal);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-icon i {
    font-size: 2rem;
    color: var(--color-white);
}

.service-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.service-description {
    color: var(--color-light-gray);
    font-size: 1rem;
    line-height: 1.7;
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-black);
}

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

.contact-card {
    background-color: var(--color-dark-gray-2);
    padding: var(--spacing-xl);
    border-radius: 8px;
    text-align: center;
    border: 1px solid transparent;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(20px);
}

.contact-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.contact-card:hover {
    border-color: var(--color-red-primary);
    box-shadow: var(--shadow-red);
    transform: translateY(-5px);
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-red-primary), var(--color-red-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.contact-icon i {
    font-size: 2.5rem;
    color: var(--color-white);
}

.contact-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.contact-link {
    color: var(--color-red-primary);
    font-size: 1.125rem;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-normal);
}

.contact-link:hover {
    color: var(--color-red-secondary);
    text-decoration: underline;
}

.contact-text {
    color: var(--color-light-gray);
    font-size: 1.125rem;
    line-height: 1.8;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background-color: var(--color-black);
    border-top: 2px solid var(--color-red-primary);
    padding: var(--spacing-xl) 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    text-align: center;
}

.logo-footer {
    height: 100px;
    width: auto;
    opacity: 0.8;
    transition: opacity var(--transition-normal);
}

.logo-footer:hover {
    opacity: 1;
}

.footer-text {
    color: var(--color-light-gray);
    font-size: 0.95rem;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

/* Tablet (768px and below) */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    .nav {
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-md);
    }
    
    .nav-logo .logo {
        height: 40px;
    }
    
    .hero {
        min-height: 100svh;
    }
    
    .hero-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .hero-cta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .network-animation {
        transform: scale(1.5);
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    :root {
        --spacing-xl: 2rem;
        --spacing-xxl: 3rem;
    }
    
    .nav-logo .logo {
        height: 35px;
    }
    
    .services {
        padding: var(--spacing-xl) 0;
    }
    
    .contact {
        padding: var(--spacing-xl) 0;
    }
    
    .service-card,
    .contact-card {
        padding: var(--spacing-lg);
    }
    
    .scroll-indicator {
        bottom: var(--spacing-lg);
    }
}

/* Large Desktop (1400px and above) */
@media (min-width: 1400px) {
    .container {
        max-width: 1400px;
    }
}

/* ===================================
   ANIMATIONS & TRANSITIONS
   =================================== */

/* Fade in on scroll */
@keyframes fadeInOnScroll {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Accessibility: Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .scroll-indicator {
        animation: none;
    }
}

/* Print Styles */
@media print {
    .header,
    .scroll-indicator,
    .hero-background {
        display: none;
    }
    
    body {
        background-color: white;
        color: black;
    }
}