body {
    font-family: 'Inter', sans-serif;
}

.site-header {
    position: relative;
    background: linear-gradient(
        90deg,
        rgba(30, 58, 95, 0.10) 0%,
        rgba(255, 255, 255, 0.92) 30%,
        rgba(255, 255, 255, 0.92) 70%,
        rgba(30, 58, 95, 0.10) 100%
    );
    border-bottom: 1px solid rgba(30, 58, 95, 0.12);
}

.site-header::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.55), transparent);
    pointer-events: none;
}

.hero-gradient {
    background: linear-gradient(rgba(30, 58, 95, 0.8), rgba(15, 23, 42, 0.9)), url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?auto=format&fit=crop&q=80&w=2070') center/cover no-repeat;
}

.text-shadow {
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.whatsapp-float {
    position: fixed;
    bottom: 40px;
    right: 40px;
    background-color: #25d366;
    color: white;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 10px rgba(0,0,0,0.2);
    z-index: 100;
    padding: 12px;
    transition: all 0.3s ease;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    background-color: #128c7e;
}

/* Nav Links Underline Animation */
.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #3b82f6;
    transition: width 0.3s ease;
}

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

/* New Sidebar Mobile Menu */
.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    z-index: 55;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-sidebar {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100%;
    background: white;
    z-index: 60;
    box-shadow: -10px 0 30px rgba(0,0,0,0.1);
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-col: column;
    padding: 2rem;
}

.mobile-sidebar.active {
    right: 0;
}

.no-scroll {
    overflow: hidden;
}

/* Form refinement */
input:focus, textarea:focus {
    border-color: #3b82f6 !important;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}