@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,300;0,14..32,400;0,14..32,500;0,14..32,600;0,14..32,700;0,14..32,800;0,14..32,900;1,14..32,400&display=swap');

* { font-family: 'Inter', sans-serif; }
html { scroll-behavior: smooth; }

/* Custom scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #2563eb; border-radius: 99px; }
.dark ::-webkit-scrollbar-track { background: #0f172a; }

/* Anti-FOUC */
[x-cloak] { display: none !important; }

/* Gradient animated background */
@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}
.gradient-animated {
    background: linear-gradient(-45deg, #0f172a, #1e3a8a, #1e40af, #0f172a);
    background-size: 400% 400%;
    animation: gradient-shift 12s ease infinite;
}

/* Grid background */
.grid-bg {
    background-image:
        linear-gradient(rgba(37,99,235,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37,99,235,0.06) 1px, transparent 1px);
    background-size: 48px 48px;
}
.dark .grid-bg {
    background-image:
        linear-gradient(rgba(96,165,250,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(96,165,250,0.06) 1px, transparent 1px);
}

/* Float animation */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}
.float { animation: float 5s ease-in-out infinite; }
.float-delay { animation: float 5s ease-in-out 1.5s infinite; }

/* Fade in up */
@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(28px); }
    to   { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fade-in-up 0.7s ease forwards; }
.delay-100  { animation-delay: 0.1s; opacity: 0; }
.delay-200  { animation-delay: 0.2s; opacity: 0; }
.delay-300  { animation-delay: 0.3s; opacity: 0; }
.delay-400  { animation-delay: 0.4s; opacity: 0; }
.delay-500  { animation-delay: 0.5s; opacity: 0; }

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.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; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* Glass morphism */
.glass {
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
}

/* Nav link underline */
.nav-link { position: relative; }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2563eb;
    border-radius: 99px;
    transition: width 0.25s ease;
}
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

/* Feature card */
.feature-card {
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.feature-card:hover {
    transform: translateY(-4px);
}

/* Pricing card */
.pricing-card {
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.pricing-card:hover {
    transform: translateY(-6px);
}

/* Glow */
.glow-blue  { box-shadow: 0 0 48px rgba(37,99,235,0.25); }
.glow-blue2 { box-shadow: 0 0 80px rgba(37,99,235,0.15); }

/* Nav scrolled state */
#main-nav.nav-scrolled {
    box-shadow: 0 1px 24px rgba(0,0,0,0.08);
}
.dark #main-nav.nav-scrolled {
    box-shadow: 0 1px 24px rgba(0,0,0,0.4);
}

/* Progress bars (for feature mockup) */
@keyframes bar-grow {
    from { width: 0; }
}
.bar-animate { animation: bar-grow 1.2s ease forwards; }

/* Dot pulse */
@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.5; transform: scale(0.85); }
}
.pulse-dot { animation: pulse-dot 1.4s ease-in-out infinite; }

/* Button transitions */
.btn-primary {
    transition: all 0.2s ease;
}
.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(37,99,235,0.35);
}