/* Black Horizon Website - Main Stylesheet */

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: #000000;
    overflow-x: hidden;
}

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-black: #000000;
    --color-dark-grey: #1a1a1a;
    --color-grey: #333333;
    --color-light-grey: #b0b0b0;
    --color-white: #ffffff;
    --color-accent: #ffffff;
    --color-accent-hover: #f0f0f0;
    --color-blue-dark: #0a0b1e;
    
    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Layout */
    --max-width: 1200px;
    --section-padding: 5rem 0;
    --border-radius: 8px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--color-white);
    color: var(--color-black);
    font-weight: 600;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
    background: var(--color-accent-hover);
    color: var(--color-black);
}

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

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-black);
    transform: translateY(-2px);
}

/* Section Styles */
.section {
    padding: var(--section-padding);
    position: relative;
}

.section:nth-child(even) {
    background: linear-gradient(180deg, var(--color-black) 0%, var(--color-dark-grey) 100%);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
    font-weight: 700;
}

.section-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-light-grey);
    margin-bottom: var(--spacing-lg);
}

.title-underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-cyan), var(--color-cyan-dark));
    margin: 0 auto;
    border-radius: 2px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all var(--transition-smooth);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.98);
    box-shadow: 0 2px 20px rgba(0, 212, 255, 0.1);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s ease;
}

.logo-link:hover {
    opacity: 0.8;
}

.footer-logo-link {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s ease;
}

.footer-logo-link:hover {
    opacity: 0.8;
}

.logo-image {
    height: 32px;
    width: 32px;
    object-fit: contain;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 900;
    letter-spacing: 2px;
    color: var(--color-white);
}

.logo-icon {
    position: relative;
}

.cube-container {
    display: flex;
    gap: 2px;
}

/* Cube styles removed - using logo image now */

.cube:nth-child(2) {
    animation-delay: 0.2s;
}

.cube:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-accent);
}

.nav-cta {
    background: var(--color-white);
    color: var(--color-black) !important;
}

.nav-cta:hover {
    background: var(--color-white);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--color-white);
    transition: all var(--transition-smooth);
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px; /* Ensure minimum height on mobile */
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.8)),
        radial-gradient(ellipse at center, rgba(0, 100, 200, 0.1) 0%, transparent 70%),
        url('../assets/images/hero-image.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    filter: contrast(1.2) brightness(0.9);
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 100px 100px at 30% 40%, rgba(255, 0, 0, 0.4) 0%, transparent 70%),
        radial-gradient(ellipse 100px 100px at 70% 40%, rgba(255, 0, 0, 0.4) 0%, transparent 70%);
    pointer-events: none;
    animation: drone-lights 3s ease-in-out infinite alternate;
}

@keyframes drone-lights {
    0% {
        opacity: 0.6;
    }
    100% {
        opacity: 1;
    }
}

.geometric-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(45deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px),
        linear-gradient(-45deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: float 20s infinite linear;
}

@keyframes float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-60px, -60px); }
}

.hero-content {
    text-align: center;
    z-index: 10;
    position: relative;
    max-width: 900px;
    padding: 0 var(--spacing-lg);
}

.hero-title {
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1s ease;
}

.title-main {
    display: block;
    font-size: var(--font-size-6xl);
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--color-white);
    text-shadow: 
        2px 2px 4px rgba(0, 0, 0, 0.8),
        0 0 20px rgba(255, 255, 255, 0.1);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-style: normal;
    text-transform: uppercase;
}

.title-sub {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 300;
    color: var(--color-light-grey);
    margin-top: var(--spacing-sm);
}

.hero-subtitle {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    color: var(--color-white);
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-tagline {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    color: var(--color-accent);
    font-weight: 500;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 1s ease 0.6s both;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 900;
    color: var(--color-white);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-light-grey);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    animation: fadeInUp 1s ease 0.8s both;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.scroll-arrow {
    width: 2px;
    height: 30px;
    background: var(--color-white);
    position: relative;
    animation: bounce 2s infinite;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: -3px;
    width: 8px;
    height: 8px;
    transform: rotate(45deg);
    border-right: 2px solid var(--color-white);
    border-bottom: 2px solid var(--color-white);
}

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

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

/* Platform Section */
.platform-content {
    max-width: 1000px;
    margin: 0 auto;
}

.platform-overview {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
}

.overview-text {
    font-size: var(--font-size-lg);
    color: var(--color-white);
    line-height: 1.7;
}

.platform-showcase {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

.platform-description {
    background: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.platform-description h3 {
    color: var(--color-white);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.platform-description p {
    color: var(--color-white);
    font-size: var(--font-size-base);
    line-height: 1.7;
    margin: 0;
}

.platform-image-wide {
    position: relative;
    width: 100%;
}

.command-interface-wide {
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: cover;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.image-caption {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-light-grey);
    margin-top: var(--spacing-sm);
    font-style: italic;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.technical-specs {
    background: rgba(26, 26, 26, 0.8);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.technical-specs h3 {
    color: var(--color-white);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-2xl);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-md);
}

.spec-item {
    padding: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
    font-size: var(--font-size-sm);
    color: var(--color-light-grey);
}

.spec-item strong {
    color: var(--color-white);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.capability-card {
    padding: var(--spacing-xl);
    background: rgba(26, 26, 26, 0.6);
    border-left: 3px solid var(--color-white);
    border-radius: var(--border-radius);
    transition: all var(--transition-smooth);
}

.capability-card:hover {
    background: rgba(26, 26, 26, 0.8);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.1);
}

.capability-card h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xl);
}

.capability-card p {
    color: var(--color-light-grey);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}


/* Capabilities Section */
.capabilities-content {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    gap: var(--spacing-2xl);
}

.capability-category {
    padding: var(--spacing-2xl);
    background: rgba(26, 26, 26, 0.6);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-smooth);
    position: relative;
}

.capability-category:hover {
    background: rgba(26, 26, 26, 0.8);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.capability-category:hover .capability-icon {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
}

.capability-category:hover .capability-icon svg {
    transform: scale(1.1);
}

.capability-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.capability-icon svg {
    color: var(--color-white);
    stroke: var(--color-white);
    transition: all 0.3s ease;
}

.capability-category h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.capability-category p {
    color: var(--color-light-grey);
    line-height: 1.8;
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-sm);
}

.capability-details {
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: var(--font-size-sm);
    color: var(--color-accent);
}

.capability-details strong {
    color: var(--color-white);
}


/* Company Section */
.company-content {
    max-width: 1000px;
    margin: 0 auto;
}

.company-overview {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-2xl);
    background: rgba(0, 212, 255, 0.05);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.company-overview h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.company-overview p {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--color-white);
}

.company-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-3xl);
}

.detail-section {
    padding: var(--spacing-2xl);
    background: rgba(26, 26, 26, 0.6);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.detail-section h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.detail-section p {
    color: var(--color-light-grey);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

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

.leader-profile h4 {
    color: var(--color-white);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xs);
}

.leader-title {
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: var(--spacing-sm) !important;
}

.leader-bio {
    font-size: var(--font-size-base);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg) !important;
}

.leader-expertise {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.leader-links {
    margin-top: var(--spacing-md);
}

.linkedin-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    transition: all 0.3s ease;
}

.linkedin-link:hover {
    color: var(--color-white);
    border-color: var(--color-white);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.linkedin-link svg {
    flex-shrink: 0;
    transition: fill 0.3s ease;
}

.expertise-tag {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

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

.value-item {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-light-grey);
}

.value-item:last-child {
    border-bottom: none;
}

.value-item strong {
    color: var(--color-white);
}

/* Applications Section */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.application-card {
    background: rgba(26, 26, 26, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    padding: var(--spacing-2xl);
    transition: all var(--transition-smooth);
    position: relative;
}

.application-card:hover {
    background: rgba(26, 26, 26, 0.8);
    border-color: var(--color-white);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(255, 255, 255, 0.15);
}

.application-card h3 {
    color: var(--color-white);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.application-desc {
    color: var(--color-light-grey);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-base);
}

.application-features {
    display: grid;
    gap: var(--spacing-xs);
}

.feature-item {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border-left: 2px solid var(--color-white);
    font-size: var(--font-size-sm);
    color: var(--color-white);
    border-radius: 2px;
}

/* Drone Systems Section */
.drone-content {
    max-width: 1000px;
    margin: 0 auto;
}

.drone-overview {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-2xl);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
}

.drone-overview h3 {
    color: var(--color-white);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    font-weight: 700;
}

.drone-overview p {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--color-white);
}

/* Drone Showcase */
.drone-showcase {
    margin-bottom: var(--spacing-3xl);
}

.drone-image-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.drone-image-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
    background: rgba(26, 26, 26, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.drone-image-container:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.2);
}

.drone-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.drone-image-container:hover .drone-image {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
    color: var(--color-white);
}

.image-overlay h4 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-white);
}

.image-overlay p {
    font-size: var(--font-size-sm);
    color: var(--color-light-grey);
    margin: 0;
}

.drone-categories {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.drone-category {
    background: rgba(26, 26, 26, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    transition: all var(--transition-smooth);
}

.drone-category:hover {
    background: rgba(26, 26, 26, 0.8);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

.drone-category h4 {
    color: var(--color-white);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.drone-category p {
    color: var(--color-light-grey);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.drone-specs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.spec-tag {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.interoperability-section {
    background: rgba(26, 26, 26, 0.6);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.interoperability-section h3 {
    color: var(--color-white);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    font-weight: 700;
}

.interoperability-section p {
    color: var(--color-light-grey);
    font-size: var(--font-size-base);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.standards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.standard-item {
    background: rgba(0, 0, 0, 0.3);
    padding: var(--spacing-sm);
    border-radius: 4px;
    font-size: var(--font-size-sm);
    color: var(--color-white);
    text-align: center;
    font-weight: 500;
}

/* Contact Section */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-details {
    display: grid;
    gap: var(--spacing-lg);
}

.contact-method {
    color: var(--color-white);
}

.contact-method strong {
    color: var(--color-white);
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.contact-context {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-context p {
    color: var(--color-light-grey);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.contact-details-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.contact-detail-item {
    color: var(--color-light-grey);
    font-size: var(--font-size-sm);
}

.contact-detail-item strong {
    color: var(--color-white);
    font-weight: 600;
}

.contact-form {
    display: grid;
    gap: var(--spacing-lg);
}

.form-group label {
    display: block;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    color: var(--color-white);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-white);
}

.form-group textarea {
    resize: vertical;
    font-family: inherit;
}

/* Footer */
.footer {
    background: var(--color-dark-grey);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

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

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

.footer-links {
    display: flex;
    gap: var(--spacing-2xl);
}

.footer-section h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    display: block;
    color: var(--color-light-grey);
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-light-grey);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-6xl: 3rem;
        --section-padding: 3rem 0;
    }
    
    /* Hero section mobile fixes */
    .hero {
        height: 100vh;
        min-height: 500px; /* Reduce min-height for tablets */
        padding: var(--spacing-lg) 0;
    }
    
    .hero-background {
        background-size: cover;
        background-position: center center; /* Ensure good centering */
    }
    
    .hero-content {
        padding: var(--spacing-md);
        max-width: 100%;
    }
    
    .title-main {
        font-size: var(--font-size-5xl);
        letter-spacing: 2px;
        line-height: 1.1;
    }
    
    .title-sub {
        font-size: var(--font-size-2xl);
        margin-top: var(--spacing-xs);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-tagline {
        font-size: var(--font-size-base);
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.98);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-sm);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .capabilities-content {
        gap: var(--spacing-lg);
    }
    
    .capabilities-grid {
        grid-template-columns: 1fr;
    }
    
    .company-details {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .expertise-tags,
    .leader-expertise {
        justify-content: center;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .platform-showcase {
        gap: var(--spacing-lg);
    }
    
    .platform-description {
        padding: var(--spacing-lg);
    }
    
    .applications-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .drone-categories {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .drone-image-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .drone-image-container {
        margin-bottom: var(--spacing-lg);
    }
    
    .standards-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
}

@media (max-width: 480px) {
    :root {
        --font-size-4xl: 1.75rem;
        --font-size-5xl: 2rem;
        --font-size-6xl: 2.5rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    /* Hero mobile phone optimizations */
    .hero {
        height: 100vh;
        min-height: 400px; /* Much smaller min-height for phones */
        padding: var(--spacing-xs) 0;
    }
    
    .hero-background {
        background-size: contain; /* Make image fit entirely */
        background-position: center center;
        background-color: #000; /* Add black background */
    }
    
    .hero-content {
        padding: var(--spacing-md) var(--spacing-sm);
        max-width: calc(100% - 2rem);
        text-align: center;
        position: relative;
        z-index: 10; /* Ensure text is above background */
    }
    
    .hero-title {
        margin-bottom: var(--spacing-md);
    }
    
    .title-main {
        font-size: 2rem; /* Fixed smaller size for mobile */
        letter-spacing: 1px;
        line-height: 1.1;
        word-break: break-word; /* Prevent overflow */
        text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.9); /* Stronger shadow for visibility */
    }
    
    .title-sub {
        font-size: 0.9rem; /* Much smaller subtitle */
        line-height: 1.2;
        margin-top: var(--spacing-xs);
    }
    
    .hero-subtitle {
        font-size: 1rem; /* Smaller subtitle */
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-tagline {
        font-size: 0.85rem; /* Very small tagline */
        margin-bottom: var(--spacing-md);
    }
    
    .hero-stats {
        margin-bottom: var(--spacing-lg);
        gap: var(--spacing-md);
    }
    
    .stat-number {
        font-size: var(--font-size-xl);
    }
    
    .stat-label {
        font-size: var(--font-size-xs);
    }
    
    .hero-actions {
        gap: var(--spacing-sm);
    }
    
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: var(--font-size-sm);
        width: 100%;
        max-width: 280px;
    }
}

/* Extra small phones */
@media (max-width: 360px) {
    .hero {
        min-height: 380px; /* Even smaller for tiny phones */
    }
    
    .hero-background {
        background-size: contain; /* Keep image contained */
    }
    
    .title-main {
        font-size: 1.75rem; /* Very small for tiny screens */
        letter-spacing: 0.5px;
    }
    
    .title-sub {
        font-size: 0.8rem; /* Tiny subtitle */
    }
    
    .hero-content {
        padding: var(--spacing-sm) var(--spacing-xs);
    }
}

/* Mobile landscape orientation */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        height: auto;
        min-height: 100vh;
        padding: var(--spacing-lg) 0;
    }
    
    .hero-content {
        transform: scale(0.9);
    }
    
    .hero-stats {
        flex-direction: row;
        gap: var(--spacing-lg);
        justify-content: center;
    }
    
    .hero-actions {
        flex-direction: row;
        gap: var(--spacing-md);
    }
    
    .scroll-indicator {
        display: none; /* Hide scroll indicator in landscape */
    }
}