/* Base */
*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #0d9488;
}

/* Selection */
::selection {
    background: #0d9488;
    color: white;
}

/* Hero badge animation */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.hero-badge {
    animation: float 4s ease-in-out infinite;
}

/* Feature card hover */
.feature-card {
    transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.feature-card:hover {
    transform: translateY(-4px);
}

/* Nav transitions */
.nav {
    transition: background-color 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

.nav.scrolled {
    background-color: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

.nav.transparent .nav-logo-text {
    color: #0f172a;
}

.nav.scrolled .nav-logo-text {
    color: #0f172a;
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #0d9488;
    transition: width 0.3s ease;
}

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

/* Mobile menu */
.mobile-menu {
    transition: opacity 0.5s cubic-bezier(0.23, 1, 0.32, 1), pointer-events 0.5s ease;
}

.mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu-link {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hamburger */
.hamburger-line {
    transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1), opacity 0.3s ease;
}

#menuBtn.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

#menuBtn.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

#menuBtn.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
    width: 1.25rem;
}

/* Scroll reveal (below fold only) */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.23, 1, 0.32, 1), transform 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; }
}

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

/* Image loading */
img {
    display: block;
    max-width: 100%;
}