/* ==================== BASE ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    overflow-x: hidden;
}

::selection {
    background-color: #9dd7bc;
    color: #121f45;
}

/* ==================== NAVBAR SCROLLED ==================== */
#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(9, 15, 33, 0.08);
}

#navbar.scrolled .font-serif {
    color: #121f45;
}

/* ==================== REVEAL ANIMATIONS ==================== */
/* Default state: visible (progressive enhancement) */
.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s ease, transform 0.7s ease;
}

/* Only apply hidden state when JS is enabled and motion is preferred */
.js-enabled .reveal-up,
.js-enabled .reveal-left,
.js-enabled .reveal-right {
    opacity: 0;
}

.js-enabled .reveal-up {
    transform: translateY(40px);
}

.js-enabled .reveal-left {
    transform: translateX(-40px);
}

.js-enabled .reveal-right {
    transform: translateX(40px);
}

.js-enabled .reveal-up.revealed,
.js-enabled .reveal-left.revealed,
.js-enabled .reveal-right.revealed {
    opacity: 1;
    transform: none;
}

/* Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .reveal-up,
    .reveal-left,
    .reveal-right {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ==================== MOBILE MENU ==================== */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

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

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

::-webkit-scrollbar-track {
    background: #f4fbf8;
}

::-webkit-scrollbar-thumb {
    background: #9dd7bc;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #6fbf99;
}

/* ==================== UTILITY ==================== */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 70px;
    }
}