/* ===== Base & Utilities ===== */
*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

/* ===== Scroll Reveal ===== */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal[data-reveal-delay="1"] { transition-delay: 0.1s; }
.reveal[data-reveal-delay="2"] { transition-delay: 0.2s; }
.reveal[data-reveal-delay="3"] { transition-delay: 0.3s; }
.reveal[data-reveal-delay="4"] { transition-delay: 0.4s; }
.reveal[data-reveal-delay="5"] { transition-delay: 0.5s; }

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Navbar ===== */
.navbar-scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 20px rgba(13, 25, 40, 0.08);
}

.navbar-scrolled .nav-logo-text {
    color: #15263c !important;
}

.navbar-scrolled .nav-link {
    color: #507098 !important;
}

.navbar-scrolled .nav-link:hover {
    color: #34a078 !important;
}

/* ===== Scroll Indicator ===== */
.scroll-indicator {
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.4; transform: scaleY(1); }
    50% { opacity: 0.8; transform: scaleY(1.2); }
}

/* ===== Mobile Menu ===== */
#mobile-menu {
    animation: slideDown 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-nav-link {
    display: block;
    padding: 0.5rem 0;
    border-radius: 0.5rem;
}

.mobile-nav-link:hover {
    background: rgba(52, 160, 120, 0.06);
}

/* ===== Form Styles ===== */
input:focus, textarea:focus {
    outline: none;
}

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

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

::-webkit-scrollbar-thumb {
    background: #c5ebd8;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #95d9bc;
}

/* ===== Selection ===== */
::selection {
    background: rgba(52, 160, 120, 0.15);
    color: #15263c;
}

/* ===== Focus Visible ===== */
:focus-visible {
    outline: 2px solid #34a078;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== Print Styles ===== */
@media print {
    nav, .scroll-indicator, #mobile-menu-btn {
        display: none !important;
    }
    
    body {
        color: #000;
        background: #fff;
    }
}