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

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

body {
    font-family: 'Inter', sans-serif;
    background-color: #020617;
    color: white;
    overflow-x: hidden;
}

/* === Custom Scrollbar === */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0f172a;
}
::-webkit-scrollbar-thumb {
    background: #14b8a6;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #2dd4bf;
}

/* === Animations === */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

@keyframes float-delay {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(-2deg); }
}

@keyframes marquee {
    0% { transform: translateX(0%); }
    100% { transform: translateX(-50%); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-float-delay {
    animation: float-delay 8s ease-in-out infinite;
}

.animate-marquee {
    animation: marquee 25s linear infinite;
}

/* === Scroll Reveal (progressive enhancement) === */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .reveal.revealed {
        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; }
}

/* === Navbar === */
#navbar {
    background: transparent;
}

#navbar.scrolled {
    background: rgba(2, 6, 23, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(20, 184, 166, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* === Mobile Menu === */
.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

#mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* === Menu Button === */
.menu-line {
    display: block;
}

#menu-btn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
#menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
}
#menu-btn.active .menu-line:nth-child(3) {
    width: 24px;
    transform: rotate(-45deg) translate(5px, -5px);
    margin: 0;
}

/* === Hero === */
#hero {
    position: relative;
}

/* === Section Dividers === */
section + section::before {
    content: '';
    display: block;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(20, 184, 166, 0.2), transparent);
}

/* === Card Hover Effects === */
.bg-slate-900\/70:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 40px rgba(20, 184, 166, 0.05);
}

/* === Button Focus === */
button:focus-visible,
a:focus-visible {
    outline: 2px solid #2dd4bf;
    outline-offset: 2px;
    border-radius: 0.5rem;
}

/* === Input Autofill === */
input:-webkit-autofill,
textarea:-webkit-autofill {
    -webkit-box-shadow: 0 0 0 30px #0f172a inset !important;
    -webkit-text-fill-color: white !important;
}

/* === Selection === */
::selection {
    background: rgba(20, 184, 166, 0.3);
    color: white;
}