/* AeroRegis - Urban Air Mobility Management System Styles */

/* ========================================
   CSS Variables - Brand Colors
   ======================================== */
:root {
    /* Brand Colors */
    --primary-blue: #00A4E4;
    --secondary-blue: #0066CC;
    --gold: #D4AF37;
    --dark-blue: #0A1628;
    --darker-blue: #050B14;
    --navy: #1a2332;
    
    /* Accent Colors */
    --cyan: #00D9FF;
    --light-cyan: #4DE8FF;
    --purple: #7B61FF;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --light-grey: #E5E7EB;
    --grey: #9CA3AF;
    --dark-grey: #4B5563;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-blue), var(--cyan));
    --gradient-gold: linear-gradient(135deg, var(--gold), #FFD700);
    --gradient-dark: linear-gradient(180deg, var(--dark-blue), var(--darker-blue));
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Typography */
    --font-primary: 'Orbitron', sans-serif;
    --font-secondary: 'Rajdhani', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ========================================
   Global Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-secondary);
    background: var(--darker-blue);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

img {
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 164, 228, 0.1);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(10, 22, 40, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.nav-brand .logo {
    height: 50px;
    width: auto;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    margin: 3px 0;
    transition: var(--transition-normal);
    border-radius: 2px;
}

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

.nav-link {
    font-family: var(--font-secondary);
    font-weight: 500;
    font-size: 1rem;
    color: var(--light-grey);
    transition: var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-normal);
}

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

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

.btn-demo {
    background: var(--gradient-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 5px;
    color: var(--white) !important;
}

.btn-demo::after {
    display: none;
}

.btn-demo:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 164, 228, 0.4);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    background: linear-gradient(135deg, #0A1628 0%, #050B14 50%, rgba(0, 164, 228, 0.2) 100%);
}

.video-background video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    z-index: 0;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(10, 22, 40, 0.9) 0%,
        rgba(5, 11, 20, 0.85) 50%,
        rgba(0, 164, 228, 0.2) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--spacing-xxl) 0;
    margin-top: 80px;
}

.hero-logo {
    margin-bottom: var(--spacing-xl);
    display: flex;
    justify-content: center;
}

.hero-logo img {
    width: 600px;
    max-width: 90vw;
    height: auto;
    filter: drop-shadow(0 10px 40px rgba(0, 164, 228, 0.5));
}

.hero-title {
    font-family: var(--font-primary);
    font-size: clamp(3rem, 8vw, 8rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 8px;
    display: flex;
    justify-content: center;
    gap: 0.2em;
}

.aero-text {
    color: var(--primary-blue);
    text-shadow: 0 0 30px rgba(0, 164, 228, 0.8);
}

.regis-text {
    color: var(--gold);
    text-shadow: 0 0 30px rgba(212, 175, 55, 0.8);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline;
}

.hero-subtitle {
    font-family: var(--font-secondary);
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--gold);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
    font-style: italic;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--light-grey);
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 8px;
    font-family: var(--font-secondary);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(0, 164, 228, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 164, 228, 0.5);
}

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

.btn-secondary:hover {
    background: rgba(0, 164, 228, 0.1);
    border-color: var(--cyan);
    color: var(--cyan);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.stat {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(0, 164, 228, 0.05);
    border: 1px solid rgba(0, 164, 228, 0.2);
    border-radius: 10px;
    min-width: 150px;
}

.stat-number {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--grey);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-arrow {
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary-blue);
    border-radius: 20px;
    position: relative;
}

.scroll-arrow::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--primary-blue);
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% {
        top: 10px;
        opacity: 1;
    }
    50% {
        top: 30px;
        opacity: 0.3;
    }
}

/* ========================================
   Section Headers
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.3rem);
    color: var(--grey);
    max-width: 700px;
    margin: 0 auto;
}

/* ========================================
   About Section
   ======================================== */
.about {
    padding: var(--spacing-xxl) 0;
    background: var(--gradient-dark);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.about-text h3 {
    font-family: var(--font-primary);
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: var(--spacing-md);
}

.about-text p {
    font-size: 1.1rem;
    color: var(--light-grey);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-features {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(0, 164, 228, 0.1);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    border: 1px solid var(--primary-blue);
}

.feature-badge i {
    color: var(--primary-blue);
}

.dashboard-preview {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 164, 228, 0.3);
    border: 2px solid var(--primary-blue);
}

.preview-image {
    width: 100%;
    display: block;
    transition: var(--transition-slow);
}

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

.preview-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(10, 22, 40, 0.9);
    padding: var(--spacing-sm);
    text-align: center;
    font-weight: 600;
    color: var(--primary-blue);
}

/* ========================================
   Features Section
   ======================================== */
.features {
    padding: var(--spacing-xxl) 0;
    background: var(--dark-blue);
}

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

.feature-card {
    background: rgba(0, 164, 228, 0.05);
    border: 1px solid rgba(0, 164, 228, 0.2);
    border-radius: 15px;
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    background: rgba(0, 164, 228, 0.1);
    border-color: var(--primary-blue);
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 164, 228, 0.3);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: 1.8rem;
    color: var(--white);
}

/* Font Awesome Icon Fix */
.feature-icon i,
.feature-badge i,
.interface-features i {
    display: inline-block;
    font-style: normal;
    font-variant: normal;
    text-rendering: auto;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1;
}

/* Ensure Font Awesome loads properly */
.fas, .fa-solid {
    font-family: "Font Awesome 6 Free" !important;
    font-weight: 900 !important;
}

.far, .fa-regular {
    font-family: "Font Awesome 6 Free" !important;
    font-weight: 400 !important;
}

.fab, .fa-brands {
    font-family: "Font Awesome 6 Brands" !important;
    font-weight: 400 !important;
}

.feature-card h3 {
    font-family: var(--font-primary);
    font-size: 1.4rem;
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.feature-card p {
    color: var(--grey);
    line-height: 1.7;
}

/* ========================================
   Technology / Platform Interfaces Section
   ======================================== */
.technology {
    padding: var(--spacing-xxl) 0;
    background: var(--gradient-dark);
}

.interface-showcase {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xxl);
}

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

.interface-item.reverse {
    direction: rtl;
}

.interface-item.reverse > * {
    direction: ltr;
}

.interface-image {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 164, 228, 0.3);
    border: 2px solid var(--primary-blue);
}

.interface-preview {
    width: 100%;
    display: block;
    transition: var(--transition-slow);
}

.interface-preview:hover {
    transform: scale(1.05);
}

.interface-details h3 {
    font-family: var(--font-primary);
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: var(--spacing-md);
}

.interface-details p {
    font-size: 1.1rem;
    color: var(--light-grey);
    margin-bottom: var(--spacing-md);
}

.interface-features {
    list-style: none;
}

.interface-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 1.05rem;
    color: var(--grey);
}

.interface-features i {
    color: var(--primary-blue);
    font-size: 1.2rem;
}

/* ========================================
   Why AeroRegis Section
   ======================================== */
.market {
    padding: var(--spacing-xxl) 0;
    background: var(--dark-blue);
}

.market-overview {
    background: rgba(212, 175, 55, 0.05);
    border: 2px solid rgba(212, 175, 55, 0.3);
    border-radius: 20px;
    padding: var(--spacing-xl);
}

.market-overview h3 {
    font-family: var(--font-primary);
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.market-points {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.market-point {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.point-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.3rem;
    color: var(--dark-blue);
}

.point-content h4 {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    color: var(--gold);
    margin-bottom: var(--spacing-xs);
}

.point-content p {
    color: var(--light-grey);
    line-height: 1.7;
}

/* ========================================
   Tech Stack Section
   ======================================== */
.tech-stack {
    padding: var(--spacing-xxl) 0;
    background: var(--gradient-dark);
}

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

.tech-card {
    background: rgba(0, 164, 228, 0.05);
    border: 1px solid rgba(0, 164, 228, 0.2);
    border-radius: 15px;
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

.tech-card:hover {
    background: rgba(0, 164, 228, 0.1);
    border-color: var(--primary-blue);
    transform: translateY(-10px);
}

.tech-card i {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.tech-card h4 {
    font-family: var(--font-primary);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.tech-card p {
    color: var(--grey);
    font-size: 0.95rem;
}

/* ========================================
   Demo Request Section
   ======================================== */
.demo {
    padding: var(--spacing-xxl) 0;
    background: var(--dark-blue);
}

.demo-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

.demo-info h2 {
    font-family: var(--font-primary);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.demo-info > p {
    font-size: 1.1rem;
    color: var(--light-grey);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

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

.benefit {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.05rem;
    color: var(--light-grey);
}

.benefit i {
    color: var(--primary-blue);
    font-size: 1.3rem;
}

.demo-form-container {
    background: rgba(0, 164, 228, 0.05);
    border: 2px solid rgba(0, 164, 228, 0.2);
    border-radius: 20px;
    padding: var(--spacing-xl);
}

.demo-form h3 {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    color: var(--gold);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--light-grey);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    background: rgba(10, 22, 40, 0.5);
    border: 1px solid rgba(0, 164, 228, 0.3);
    border-radius: 8px;
    color: var(--white);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    background: rgba(10, 22, 40, 0.7);
}

.form-group textarea {
    resize: vertical;
}

.btn-submit {
    width: 100%;
    position: relative;
    overflow: hidden;
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.btn-submit.loading .btn-text {
    display: none;
}

.btn-submit.loading .btn-loader {
    display: block;
}

.form-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: 8px;
    text-align: center;
    display: none;
}

.form-message.success {
    display: block;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.5);
    color: #22C55E;
}

.form-message.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.5);
    color: #EF4444;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--darker-blue);
    border-top: 2px solid rgba(0, 164, 228, 0.2);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

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

.footer-section h4 {
    font-family: var(--font-primary);
    color: var(--gold);
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    height: 60px;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: var(--grey);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

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

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

.footer-section ul li a {
    color: var(--grey);
    transition: var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--primary-blue);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(0, 164, 228, 0.1);
    border: 1px solid var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-blue);
    transition: var(--transition-normal);
}

.social-links a:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(0, 164, 228, 0.1);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    color: var(--grey);
    font-size: 0.9rem;
}

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

.footer-links a {
    color: var(--grey);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

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

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 968px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(10, 22, 40, 0.98);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: var(--transition-normal);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .about-content,
    .interface-item,
    .demo-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .interface-item.reverse {
        direction: ltr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 640px) {
    .hero-logo img {
        width: 90vw;
    }
    
    .hero-title {
        font-size: clamp(2rem, 10vw, 4rem);
        letter-spacing: 4px;
        flex-wrap: wrap;
    }
    
    .hero-stats {
        flex-direction: column;
        align-items: stretch;
    }
    
    .stat {
        width: 100%;
    }
    
    .features-grid,
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ========================================
   Animations
   ======================================== */
[data-aos] {
    opacity: 0;
    transition-property: opacity, transform;
}

[data-aos].aos-animate {
    opacity: 1;
}

/* Smooth scrolling for all browsers */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}