/* Custom styles and animations */

/* Base animations - above the fold content */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero animations - always visible */
.animate-fade-in {
    animation: fadeIn 0.8s ease-out forwards;
}

.animate-slide-up {
    opacity: 0;
    animation: slideUp 0.8s ease-out forwards;
}

.animate-slide-up.delay-100 {
    animation-delay: 0.1s;
}

.animate-slide-up.delay-200 {
    animation-delay: 0.2s;
}

.animate-slide-up.delay-300 {
    animation-delay: 0.3s;
}

/* Scroll reveal animations - below the fold only */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

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

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    
    .animate-fade-in,
    .animate-slide-up {
        animation: none;
        opacity: 1;
        transform: none;
    }
    
    .animate-bounce {
        animation: none;
    }
}

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

::-webkit-scrollbar-track {
    background: #f0fdfa;
}

::-webkit-scrollbar-thumb {
    background: #99f6e4;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #5eead4;
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Selection color */
::selection {
    background-color: #99f6e4;
    color: #134e4a;
}

/* Focus styles for accessibility */
:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
}

/* Mobile menu transitions */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

#mobile-menu.open {
    max-height: 400px;
    padding-top: 0;
}

/* Navbar scroll effect */
.nav-scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
}

.nav-scrolled .nav-link {
    color: #1e293b !important;
}

.nav-scrolled .nav-subtext {
    color: #0d9488 !important;
}

.nav-scrolled .mobile-nav-link {
    color: #1e293b !important;
}

/* Button micro-interactions */
button, a {
    -webkit-tap-highlight-color: transparent;
}

/* Image loading placeholder */
img {
    background: linear-gradient(135deg, #f0fdfa 0%, #ccfbf1 100%);
}

/* Staggered reveal delays */
.reveal:nth-child(1) { transition-delay: 0.05s; }
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.15s; }
.reveal:nth-child(4) { transition-delay: 0.2s; }
.reveal:nth-child(5) { transition-delay: 0.25s; }
.reveal:nth-child(6) { transition-delay: 0.3s; }

/* Print styles */
@media print {
    nav, #back-to-top, button {
        display: none !important;
    }
    
    body {
        color: #000;
        background: #fff;
    }
    
    section {
        page-break-inside: avoid;
    }
}