/* Base & Utilities */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0f172a;
}
::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #0D9488;
}

/* Selection */
::selection {
    background: rgba(13, 148, 136, 0.3);
    color: #ccfbf1;
}

/* Fade-in animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Nav styles */
.nav-scrolled {
    background: rgba(8, 15, 26, 0.95) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(13, 148, 136, 0.15);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Mobile menu */
.mobile-menu-open {
    opacity: 1 !important;
    pointer-events: all !important;
}

/* Service card hover glow */
.service-card:hover {
    box-shadow: 0 0 40px rgba(13, 148, 136, 0.08);
}

/* Intersection observer animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s 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; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* Hero text animation */
.hero-title {
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    animation-delay: 0.2s;
    opacity: 0;
}

.hero-subtitle {
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    animation-delay: 0.4s;
    opacity: 0;
}

.hero-cta {
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    animation-delay: 0.6s;
    opacity: 0;
}

.hero-badge {
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    animation-delay: 0.1s;
    opacity: 0;
}

/* Pulse dot */
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Mobile menu button animation */
.menu-icon-open line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.menu-icon-open line:nth-child(2) {
    opacity: 0;
}
.menu-icon-open line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Geometric floating shapes */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(3deg); }
}

@keyframes float-slow {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-12px) rotate(-2deg); }
}

.floating-shape-1 {
    animation: float 6s ease-in-out infinite;
}

.floating-shape-2 {
    animation: float-slow 8s ease-in-out infinite;
}

/* Focus visible for accessibility */
*:focus-visible {
    outline: 2px solid #2dd4bf;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Select dropdown arrow */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    html {
        scroll-padding-top: 70px;
    }
}