/* Base & Reset */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; -webkit-font-smoothing: antialiased; }

/* Hero Background */
.hero-bg {
    background-color: #0a1628;
}
.hero-bg img {
    opacity: 0;
    transition: opacity 1s ease;
}
.hero-bg img.loaded {
    opacity: 1;
}
.hero-overlay {
    background: linear-gradient(
        135deg,
        rgba(10, 22, 40, 0.88) 0%,
        rgba(15, 33, 64, 0.75) 50%,
        rgba(10, 22, 40, 0.85) 100%
    );
}

/* Scroll Reveal */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.revealed {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
    }
    .reveal.revealed {
        opacity: 1;
        transform: none;
    }
    .service-card {
        opacity: 0;
        transform: translateY(24px);
    }
    .service-card.revealed {
        opacity: 1;
        transform: none;
        transition: opacity 0.5s ease, transform 0.5s ease, border-color 0.4s ease, box-shadow 0.4s ease;
    }
    .program-card {
        opacity: 0;
        transform: translateY(24px);
    }
    .program-card.revealed {
        opacity: 1;
        transform: none;
        transition: opacity 0.5s ease, transform 0.5s ease, border-color 0.4s ease;
    }
}

/* Navbar */
#navbar {
    background: transparent;
}
#navbar.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(255,255,255,0.05);
}

/* Mobile Menu */
#mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #0a1628; }
::-webkit-scrollbar-thumb { background: #1a3a6e; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #d4a017; }

/* Selection */
::selection { background: rgba(212, 160, 23, 0.3); color: #fff; }
</style>