/* ============================================
   PACIUGO GELATO — Custom Styles
   ============================================ */

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

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

body {
    overflow-x: hidden;
}

/* Selection Color */
::selection {
    background-color: rgba(74, 222, 128, 0.3);
    color: #f0fdf4;
}

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

#navbar.scrolled {
    background-color: rgba(10, 25, 41, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: linear-gradient(90deg, #4ade80, #22c55e);
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    color: #86efac !important;
}

/* Mobile Menu */
#mobile-menu {
    transition: opacity 0.5s ease, pointer-events 0.5s ease;
}

#mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

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

#mobile-menu.active .mobile-nav-link {
    opacity: 1;
    transform: translateY(0);
}

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

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

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

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

#mobile-menu-btn.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
    width: 1.5rem;
}

/* ============================================
   HERO SCROLL INDICATOR
   ============================================ */
@keyframes scrollDown {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(200%); }
}

.animate-scroll-down {
    animation: scrollDown 1.5s ease-in-out infinite;
}

/* ============================================
   SCROLL REVEAL ANIMATIONS
   (Progressive enhancement — content visible without JS)
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up {
        opacity: 1;
        transform: none;
        transition: opacity 0.8s ease, transform 0.8s ease;
    }
    
    .reveal-left {
        opacity: 1;
        transform: none;
        transition: opacity 0.8s ease, transform 0.8s ease;
    }
    
    .reveal-right {
        opacity: 1;
        transform: none;
        transition: opacity 0.8s ease, transform 0.8s ease;
    }
    
    /* When JS adds the .revealed class */
    .reveal-up.revealed {
        opacity: 0;
        transform: translateY(40px);
    }
    
    .reveal-left.revealed {
        opacity: 0;
        transform: translateX(-40px);
    }
    
    .reveal-right.revealed {
        opacity: 0;
        transform: translateX(40px);
    }
    
    .reveal-up.revealed.reveal-active {
        opacity: 1;
        transform: translateY(0);
    }
    
    .reveal-left.revealed.reveal-active {
        opacity: 1;
        transform: translateX(0);
    }
    
    .reveal-right.revealed.reveal-active {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Fallback: always show content if JS is disabled */
@media not all and (prefers-reduced-motion: no-preference) {
    .reveal-up,
    .reveal-left,
    .reveal-right {
        opacity: 1;
        transform: none;
    }
}

/* ============================================
   BUTTONS & INTERACTIVE
   ============================================ */
a, button {
    -webkit-tap-highlight-color: transparent;
}

/* ============================================
   IMAGE PLACEHOLDERS (prevent layout shift)
   ============================================ */
img {
    max-width: 100%;
    height: auto;
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */
@media (max-width: 768px) {
    .font-serif {
        line-height: 1.15;
    }
}

/* ============================================
   SMOOTH TRANSITIONS FOR ALL INTERACTIVE
   ============================================ */
button, a {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
#back-to-top {
    transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
}

#back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

#back-to-top:hover {
    box-shadow: 0 8px 25px rgba(74, 222, 128, 0.3);
}