/* Base styles & custom properties */
:root {
    --color-teal-500: #14b8a6;
    --color-teal-600: #0d9488;
    --color-teal-700: #0f766e;
    --color-slate-700: #1e293b;
    --color-slate-800: #1e293b;
}

html {
    scroll-behavior: smooth;
}

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

/* Section labels */
.section-label {
    letter-spacing: 0.15em;
}

/* Navbar transitions */
.nav-link {
    position: relative;
}

/* Mobile menu */
#mobile-menu.active {
    opacity: 1;
    pointer-events: auto;
}

#mobile-menu.inactive {
    opacity: 0;
    pointer-events: none;
}

/* Hamburger animation */
.menu-line {
    transition: all 0.3s ease;
}

#menu-btn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

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

#menu-btn.active .menu-line:nth-child(3) {
    width: 24px;
    transform: rotate(-45deg) translate(4px, -4px);
}

/* Hero animations */
.hero-badge {
    animation: fadeInDown 0.8s ease forwards;
}

.hero-headline {
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-subtitle {
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.hero-buttons {
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero decorative circles */
.hero-circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.08;
    background: white;
}

.circle-1 {
    width: 600px;
    height: 600px;
    top: -200px;
    right: -150px;
    animation: float-slow 20s ease-in-out infinite;
}

.circle-2 {
    width: 400px;
    height: 400px;
    bottom: -100px;
    left: -100px;
    animation: float-slow 15s ease-in-out infinite reverse;
}

.circle-3 {
    width: 200px;
    height: 200px;
    top: 40%;
    left: 10%;
    animation: float-slow 12s ease-in-out infinite;
}

@keyframes float-slow {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(20px, -20px) scale(1.02);
    }
    66% {
        transform: translate(-10px, 10px) scale(0.98);
    }
}

/* Scroll reveal animations */
.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal-up {
        opacity: 0;
        transform: translateY(32px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    .reveal-left {
        opacity: 0;
        transform: translateX(-32px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    .reveal-right {
        opacity: 0;
        transform: translateX(32px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    .reveal-up.visible,
    .reveal-left.visible,
    .reveal-right.visible {
        opacity: 1;
        transform: none;
    }
}

/* Program card hover */
.program-card {
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

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

/* Approach items */
.approach-item {
    opacity: 1;
}

@media (prefers-reduced-motion: no-preference) {
    .approach-item {
        opacity: 0;
        transform: translateX(-16px);
        transition: opacity 0.5s ease, transform 0.5s ease;
    }
    
    .approach-item.visible {
        opacity: 1;
        transform: none;
    }
}

/* Form select 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;
}

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

::-webkit-scrollbar-track {
    background: #f8fafc;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Focus visible styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #14b8a6;
    outline-offset: 2px;
    border-radius: 4px;
}