/* ===== Base & Reset ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    min-height: 100vh;
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #051423;
}
::-webkit-scrollbar-thumb {
    background: #0f3460;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #1a4a7a;
}

/* ===== Selection ===== */
::selection {
    background: rgba(52, 212, 168, 0.3);
    color: #ffffff;
}

/* ===== Navbar Transition ===== */
#navbar {
    transition: background-color 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
    background: rgba(5, 20, 35, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05), 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* ===== Mobile Menu ===== */
#mobile-menu {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Hover Card Lift ===== */
.group:hover .group-hover\:scale-110 {
    transform: scale(1.1);
}

/* ===== Floating Card Animations ===== */
@keyframes float1 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}
@keyframes float2 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}
@keyframes float3 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-6px); }
}

/* Apply floating only when not reduced motion */
@media (prefers-reduced-motion: no-preference) {
    .floating-card-1 { animation: float1 6s ease-in-out infinite; }
    .floating-card-2 { animation: float2 5s ease-in-out infinite; }
    .floating-card-3 { animation: float3 7s ease-in-out infinite; }
}

/* ===== Scroll Reveal (progressive enhancement) ===== */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.revealed {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(40px);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Staggered delays */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===== Image Hover ===== */
.group:hover .group-hover\:scale-105 {
    transform: scale(1.05);
}

/* ===== Button Focus ===== */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #34d4a8;
    outline-offset: 2px;
}

/* ===== Select styling ===== */
select option {
    background: #0a2540;
    color: #ffffff;
}

/* ===== Smooth image loading ===== */
img {
    loading: lazy;
    decoding: async;
}