:root {
    --primary-color: #007AFF;
    --secondary-color: #5AC8FA;
    --text-color: #1C1C1E;
    --bg-color: #F2F2F7;
    --white: #FFFFFF;
    --dark: #000000;
    --gray: #8E8E93;
}

/* Global Styles */
body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
}

/* Navigation */
.navbar {
    background-color: rgba(0, 0, 0, 0.9);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar-brand img {
    transition: all 0.3s ease;
}

.navbar-dark .navbar-nav .nav-link {
    color: var(--white);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link.active {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--dark) 0%, #1a1a1a 100%);
    color: var(--white);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: url('../assets/images/hero-pattern.svg') repeat;
    opacity: 0.1;
}

.hero .container {
    position: relative;
    z-index: 1;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 0.75rem 2rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

/* Cards */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    background: var(--white);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.card-title {
    color: var(--text-color);
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.card-text {
    color: var(--gray);
}

/* Sections */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

/* Mission Section */
.mission {
    background-color: var(--white);
}

/* Footer */
.footer {
    background-color: var(--dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer h5 {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.footer ul li {
    margin-bottom: 0.5rem;
}

.footer a {
    color: var(--gray);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

/* Responsive Design */
@media (max-width: 991.98px) {
    .navbar-collapse {
        background-color: rgba(0, 0, 0, 0.95);
        padding: 1rem;
        border-radius: 8px;
        margin-top: 1rem;
    }
    
    .hero {
        padding: 60px 0;
    }
}

@media (max-width: 767.98px) {
    section {
        padding: 60px 0;
    }
    
    .card {
        margin-bottom: 1.5rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 1s ease-out;
}