:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #64748b;
    --dark: #0f172a;
    --light: #f8fafc;
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --shadow-sm: 0 2px 4px 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);
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    color: #334155;
    background: var(--light);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
}

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

/* Preloader */
#preloader {
    z-index: 9999;
    transition: opacity 0.5s ease;
}

#preloader.fade-out {
    opacity: 0;
    pointer-events: none;
}

/* Navigation */
.navbar {
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.navbar.scrolled {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
}

.logo-wrapper {
    position: relative;
    display: inline-block;
}

.logo-dot {
    position: absolute;
    top: 0;
    right: -2px;
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.nav-link {
    position: relative;
    font-weight: 500;
    color: var(--dark) !important;
    transition: all 0.3s ease;
}

.nav-link-underline {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

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

/* Hero Section */
#hero {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
}

.hero-bg-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(37, 99, 235, 0.05) 100%);
    animation: float 20s infinite linear;
}

.circle-1 {
    width: 300px;
    height: 300px;
    top: -150px;
    right: -150px;
    animation-delay: 0s;
}

.circle-2 {
    width: 200px;
    height: 200px;
    bottom: -100px;
    left: -100px;
    animation-delay: -5s;
    animation-duration: 15s;
}

.circle-3 {
    width: 150px;
    height: 150px;
    top: 50%;
    right: 10%;
    animation-delay: -10s;
    animation-duration: 25s;
}

.hero-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.floating-icon {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 60px;
    height: 60px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    animation: float 3s ease-in-out infinite;
}

.stat-card {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

/* Scroll Indicator */
.scroll-down {
    display: block;
    width: 30px;
    height: 50px;
    position: relative;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--dark);
    border-radius: 20px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 10px;
    background: var(--dark);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

.arrow span {
    display: block;
    width: 10px;
    height: 10px;
    border-bottom: 2px solid var(--dark);
    border-right: 2px solid var(--dark);
    transform: rotate(45deg);
    margin: 0 auto;
    animation: arrow 2s infinite;
}

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

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

/* Section Labels */
.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary);
    margin-bottom: 1rem;
    padding: 0.25rem 1rem;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 2rem;
}

/* Service Cards */
.service-card-hover {
    background: white;
    border: 1px solid rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.service-card-hover:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.service-card-hover .service-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 3rem;
    font-weight: 900;
    color: rgba(0,0,0,0.05);
    line-height: 1;
}

.service-icon-wrapper {
    width: 70px;
    height: 70px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--primary);
}

.service-card-hover-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    z-index: -1;
    transition: opacity 0.3s ease;
    border-radius: var(--radius-md);
}

.service-card-hover:hover .service-card-hover-effect {
    opacity: 0.03;
}

/* Expertise Cards */
.expertise-card {
    transition: all 0.3s ease;
}

.expertise-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary) !important;
    box-shadow: var(--shadow-lg);
}

.expertise-icon-wrapper {
    width: 60px;
    height: 60px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
}

/* Mission & Vision Cards */
.backdrop-blur {
    backdrop-filter: blur(10px);
}

.card-icon-wrapper {
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

/* Team Cards */
.team-card {
    transition: all 0.3s ease;
}

.team-card:hover {
    transform: translateY(-10px);
}

.team-image {
    position: relative;
    overflow: hidden;
}

.team-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.5) 100%);
}

/* Contact Form */
.form-control, .form-select {
    border: 1px solid #e2e8f0;
    padding: 1rem;
    border-radius: 0.75rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-floating > label {
    color: #64748b;
}

/* Social Icons */
.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

/* Back to Top */
.back-to-top {
    transition: all 0.3s ease;
}

.back-to-top:hover {
    background: var(--primary);
    border-color: var(--primary);
}

/* Animations */
@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.1);
    }
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

@keyframes arrow {
    0% {
        opacity: 0;
        transform: rotate(45deg) translate(-5px, -5px);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: rotate(45deg) translate(5px, 5px);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .display-3 {
        font-size: 2rem;
    }
    
    .display-5 {
        font-size: 1.75rem;
    }
    
    .hero-card {
        margin-top: 2rem;
    }

    #hero {
        padding-top: 90px;
    }

    #hero .btn-lg {
        font-size: 0.9rem;
        padding: 0.6rem 1.5rem !important;
    }

    #hero .lead {
        font-size: 1rem;
    }
}

/* Utility Classes */
.bg-light-gradient {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.bg-gradient-primary {
    background: var(--gradient-primary);
}

.bg-gradient-dark {
    background: var(--gradient-dark);
}

.border-white\/10 {
    border-color: rgba(255, 255, 255, 0.1) !important;
}

.bg-white\/5 {
    background: rgba(255, 255, 255, 0.05);
}

.hover-text-white:hover {
    color: white !important;
}

.shadow-lg-hover:hover {
    box-shadow: var(--shadow-lg) !important;
}

.shadow-sm-hover:hover {
    box-shadow: var(--shadow-sm) !important;
}

.opacity-90 {
    opacity: 0.9;
}

.opacity-10 {
    opacity: 0.1;
}

/* Airline Cards */
.airline-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.airline-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl) !important;
}

.airline-card .card-header {
    background: var(--gradient-primary) !important;
    border-bottom: none;
}

.airline-card .card-footer .btn {
    transition: all 0.3s ease;
}

.airline-card .card-footer .btn:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
}

/* Billets Section */
#billets {
    position: relative;
}

#billets::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 80 80'%3E%3Cpath d='M40 0L80 40L40 80L0 40Z' fill='%232563eb' fill-opacity='0.02'/%3E%3C/svg%3E") repeat;
    pointer-events: none;
}

.bg-warning\/10 {
    background: rgba(245, 158, 11, 0.1);
}

.border-warning\/20 {
    border-color: rgba(245, 158, 11, 0.2) !important;
}
}