/* ===== Base & Typography ===== */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(13, 148, 136, 0.15);
    color: #0d9488;
}

/* ===== Animations ===== */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse-slow {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.05); }
}

@keyframes scroll-line {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

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

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

.animate-scroll-line {
    animation: scroll-line 2s ease-in-out infinite;
}

/* ===== Hero Decorative Lines ===== */
.hero-line {
    position: absolute;
    background: linear-gradient(to bottom, transparent, rgba(13, 148, 136, 0.08), transparent);
    width: 1px;
}

.line-1 {
    top: 0;
    left: 15%;
    height: 100%;
    animation: float 8s ease-in-out infinite;
}

.line-2 {
    top: 0;
    right: 20%;
    height: 100%;
    animation: float 10s ease-in-out infinite 2s;
}

.line-3 {
    top: 10%;
    left: 40%;
    height: 80%;
    animation: float 7s ease-in-out infinite 1s;
}

/* ===== Scroll Reveal ===== */
.scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .scroll-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .hero-line {
        animation: none;
    }
    .animate-pulse-slow {
        animation: none;
    }
    .animate-scroll-line {
        animation: none;
    }
    html {
        scroll-behavior: auto;
    }
}

/* ===== Navbar ===== */
.nav-text {
    color: #1e293b;
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #0d9488;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Mobile menu transitions */
#mobileMenu {
    transition: opacity 0.4s ease, transform 0.4s ease, pointer-events 0.4s ease;
}

#mobileMenu.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

#mobileMenu.closed {
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
}

.mobile-link {
    opacity: 1;
}

/* ===== Menu Icon Animation ===== */
.menu-line-top {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.menu-line-mid {
    transition: opacity 0.3s ease;
}

.menu-line-bot {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#menuBtn.active .menu-line-top {
    transform: translateY(7px) rotate(45deg);
}

#menuBtn.active .menu-line-mid {
    opacity: 0;
}

#menuBtn.active .menu-line-bot {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== Card Hover Effects ===== */
.group:hover .group-hover\:scale-105 {
    transform: scale(1.05);
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

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

/* ===== Input Focus States ===== */
input:focus,
textarea:focus {
    outline: none;
}

/* ===== Smooth Image Loading ===== */
img {
    display: block;
    max-width: 100%;
}