/* ===== Base & Utilities ===== */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background-color: #0d9488;
    color: #fff;
}

/* ===== Scroll Reveal ===== */
.scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal {
        opacity: 0;
        transform: translateY(30px);
    }
    .scroll-reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Floating Animations ===== */
@keyframes float1 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

@keyframes float3 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.animate-float1 {
    animation: float1 4s ease-in-out infinite;
}

.animate-float2 {
    animation: float2 5s ease-in-out infinite 0.5s;
}

.animate-float3 {
    animation: float3 4.5s ease-in-out infinite 1s;
}

/* ===== Navbar ===== */
#navbar {
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
}

#navbar.scrolled .text-slate-900 {
    color: #0f172a;
}

#navbar.scrolled a:not(.bg-teal-600) {
    color: #475569;
}

#navbar.scrolled a:not(.bg-teal-600):hover {
    color: #0d9488;
}

/* ===== Mobile Menu ===== */
.mobile-link {
    display: block;
    transition: color 0.2s;
}

.mobile-link:hover {
    color: #0d9488;
}

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

/* ===== Button Focus ===== */
button:focus-visible,
a:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== Smooth Scroll Offset for Fixed Nav ===== */
section[id] {
    scroll-margin-top: 80px;
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

/* ===== Print Styles ===== */
@media print {
    #navbar, .scroll-reveal { opacity: 1 !important; transform: none !important; }
    .animate-float1, .animate-float2, .animate-float3 { animation: none; }
}