/* ===================================
   UFO SYSTEMS - Premium Landing Page
   =================================== */

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

:root {
    /* Color Palette - Dark, Premium, Executive */
    --color-black: #000000;
    --color-dark-gray: #1a1a1a;
    --color-medium-gray: #2a2a2a;
    --color-light-gray: #3a3a3a;
    --color-white: #ffffff;
    --color-off-white: #f5f5f5;
    --color-accent: #ffffff;
    --color-accent-hover: #cccccc;
    
    /* Typography Scale */
    --font-display: '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-black: 900;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-display);
    background-color: var(--color-black);
    color: var(--color-white);
    font-size: 18px;
    line-height: 1.6;
    font-weight: var(--font-weight-regular);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(3rem, 8vw, 7rem);
}

h2 {
    font-size: clamp(2rem, 5vw, 4rem);
}

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

p {
    line-height: 1.8;
    font-size: clamp(1rem, 2vw, 1.25rem);
}

.lead {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: var(--font-weight-medium);
    line-height: 1.6;
}

.emphasis {
    font-size: clamp(1.125rem, 2.2vw, 1.5rem);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-top: var(--spacing-lg);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Sections */
.section {
    padding: var(--spacing-xl) 0;
    min-height: auto;
}

.section-title {
    margin-bottom: var(--spacing-lg);
    text-align: center;
    font-weight: var(--font-weight-bold);
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

video {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-md);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-logo {
    position: absolute;
    top: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    max-width: 350px;
    width: 100%;
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.hero-logo img {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.3));
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.65);
    z-index: 2;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 3;
}

.brand {
    font-size: clamp(3.5rem, 10vw, 8rem);
    font-weight: var(--font-weight-black);
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-off-white) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: var(--font-weight-light);
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-lg);
    color: var(--color-white);
}

.hero-description {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    max-width: 900px;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-off-white);
    line-height: 1.8;
}

.hero-benefits {
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    display: grid;
    gap: var(--spacing-sm);
}

.benefit-item {
    padding: var(--spacing-sm);
    border-left: 3px solid var(--color-white);
    text-align: left;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.benefit-item p {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: var(--color-off-white);
    margin: 0;
}

/* Video Section */
.video-section {
    width: 100%;
    height: 70vh;
    min-height: 500px;
    overflow: hidden;
    position: relative;
}

.full-width-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ===================================
   BUTTONS
   =================================== */

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

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: clamp(1rem, 2vw, 1.125rem);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    border-radius: 0;
    transition: var(--transition-smooth);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--color-off-white);
    border-color: var(--color-off-white);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.3);
}

.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(-2px);
}

/* ===================================
   IMAGE DIVIDERS
   =================================== */

.image-divider {
    width: 100%;
    height: 60vh;
    min-height: 400px;
    max-height: 800px;
    overflow: hidden;
    position: relative;
}

.image-divider img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* ===================================
   WHAT WE HANDLE SECTION
   =================================== */

.what-we-handle {
    background-color: var(--color-dark-gray);
    padding: var(--spacing-xxl) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.service-card {
    background-color: var(--color-medium-gray);
    padding: 0;
    transition: var(--transition-smooth);
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.service-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.service-card:hover .service-image img {
    transform: scale(1.05);
}

.service-card h3 {
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-sm);
    margin: 0;
    color: var(--color-white);
}

.service-card p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--color-off-white);
    line-height: 1.8;
}

/* ===================================
   HOW IT WORKS SECTION
   =================================== */

.how-it-works {
    background-color: var(--color-black);
    padding: var(--spacing-xxl) 0;
}

.system-features-full {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.system-features-full .lead {
    margin-bottom: var(--spacing-xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.feature-card {
    padding: var(--spacing-lg);
    background-color: var(--color-dark-gray);
    border-top: 4px solid var(--color-white);
    transition: var(--transition-smooth);
}

.feature-card:hover {
    transform: translateY(-8px);
    background-color: var(--color-medium-gray);
    box-shadow: 0 20px 60px rgba(255, 255, 255, 0.1);
}

.feature-video {
    width: 100%;
    margin: var(--spacing-md) 0;
    overflow: hidden;
    border-radius: 4px;
    position: relative;
    background-color: var(--color-medium-gray);
}

.feature-video video,
.feature-video img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

/* Let videos and images maintain their natural aspect ratio */
.feature-video video {
    aspect-ratio: auto;
}

.feature-video img {
    aspect-ratio: auto;
    max-height: 400px;
    object-fit: contain;
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

.feature-card p {
    margin: 0;
    color: var(--color-off-white);
    line-height: 1.8;
}

.system-features-full .emphasis {
    text-align: center;
}

/* ===================================
   WHY CHOOSE SECTION
   =================================== */

.why-choose {
    background-color: var(--color-dark-gray);
    padding: var(--spacing-xxl) 0;
}

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

.benefit-card {
    background-color: var(--color-medium-gray);
    padding: var(--spacing-lg);
    transition: var(--transition-smooth);
    border-top: 3px solid transparent;
}

.benefit-card:hover {
    border-top-color: var(--color-white);
    transform: translateY(-5px);
    background-color: var(--color-light-gray);
}

.benefit-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

.benefit-card p {
    color: var(--color-off-white);
    margin: 0;
}

/* ===================================
   WHO IT'S FOR SECTION
   =================================== */

.who-its-for {
    background-color: var(--color-black);
    padding: var(--spacing-xxl) 0;
}

.target-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    max-width: 1600px;
    margin-left: auto;
    margin-right: auto;
}

.target-card {
    background-color: var(--color-dark-gray);
    overflow: hidden;
    transition: var(--transition-smooth);
    border: 2px solid transparent;
}

.target-card:hover {
    border-color: var(--color-white);
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(255, 255, 255, 0.2);
}

.target-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.target-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

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

.target-card h3 {
    padding: var(--spacing-md);
    text-align: center;
    font-size: clamp(1.125rem, 2.2vw, 1.375rem);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin: 0;
}

/* ===================================
   CLOSING SECTION
   =================================== */

.closing {
    background: linear-gradient(180deg, var(--color-dark-gray) 0%, var(--color-black) 100%);
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.closing-statement {
    font-size: clamp(2rem, 5vw, 3.5rem);
    max-width: 1000px;
    margin: 0 auto var(--spacing-lg);
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
}

/* ===================================
   FOOTER
   =================================== */

.footer {
    background-color: var(--color-black);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    border-top: 1px solid var(--color-light-gray);
}

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

.footer-brand h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
    font-weight: var(--font-weight-bold);
}

.footer-brand p {
    color: var(--color-off-white);
    font-size: 1rem;
}

.footer-contact h4 {
    font-size: clamp(1.125rem, 2.5vw, 1.375rem);
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
    font-weight: var(--font-weight-semibold);
}

.footer-contact p {
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.footer-contact a {
    color: var(--color-off-white);
    text-decoration: none;
    transition: var(--transition-smooth);
}

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

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

.footer-bottom p {
    color: var(--color-off-white);
    font-size: 0.875rem;
    margin: 0;
}

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

@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
        --spacing-xxl: 5rem;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .image-divider {
        height: 40vh;
        min-height: 300px;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .btn {
        width: 100%;
        max-width: 400px;
    }
    
    .benefits-grid,
    .target-grid {
        grid-template-columns: 1fr;
    }
    
    .content-image {
        height: 300px;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 16px;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .service-image {
        height: 200px;
    }
}

/* ===================================
   ANIMATIONS & POLISH
   =================================== */

@media (prefers-reduced-motion: no-preference) {
    .section {
        opacity: 0;
        animation: fadeInUp 0.8s ease forwards;
    }
    
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .hero {
        animation-delay: 0s;
    }
    
    .section:nth-child(2) {
        animation-delay: 0.1s;
    }
    
    .section:nth-child(3) {
        animation-delay: 0.2s;
    }
}

/* Selection Styling */
::selection {
    background-color: var(--color-white);
    color: var(--color-black);
}

::-moz-selection {
    background-color: var(--color-white);
    color: var(--color-black);
}