/* ─── Base & Reset ─── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(13, 148, 136, 0.3);
    color: #f0fdfa;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #020617;
}
::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #0d9488;
}

/* ─── Navbar ─── */
#navbar {
    transition: background-color 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
}

#navbar.scrolled {
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* ─── Hero Animations ─── */
.hero-element {
    opacity: 0;
    transform: translateY(40px);
    animation: heroReveal 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-element:nth-child(1) { animation-delay: 0.1s; }
.hero-element:nth-child(2) { animation-delay: 0.25s; }
.hero-element:nth-child(3) { animation-delay: 0.4s; }
.hero-element:nth-child(4) { animation-delay: 0.55s; }

@keyframes heroReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Scroll Indicator ─── */
@keyframes scrollIndicator {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(200%); }
}

.animate-scroll-indicator {
    animation: scrollIndicator 1.5s ease-in-out infinite;
}

/* ─── Service Cards ─── */
.service-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Info Cards ─── */
.info-card {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.info-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── About / Schedule / Contact Reveals ─── */
.about-reveal,
.schedule-reveal,
.contact-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);
}

.about-reveal.visible,
.schedule-reveal.visible,
.contact-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Mobile Menu ─── */
#mobileMenu.open {
    opacity: 1;
    pointer-events: all;
}

.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

#mobileMenu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobileMenu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
#mobileMenu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
#mobileMenu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
#mobileMenu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }

/* ─── Image Wrapper ─── */
.about-img-wrapper {
    position: relative;
    box-shadow: 0 32px 64px -16px rgba(0, 0, 0, 0.5);
}

.about-img-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(255, 255, 255, 0.06);
    pointer-events: none;
}

/* ─── Hover Effects ─── */
a {
    text-decoration: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

input, textarea {
    font-family: inherit;
}

/* ─── Responsive ─── */
@media (max-width: 767px) {
    .hero-element {
        transform: translateY(30px);
    }
}