/* ========== 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 {
    background-color: rgba(45, 96, 66, 0.2);
    color: #1a1a1a;
}

/* ========== NAVBAR ========== */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: currentColor;
    transition: width 0.3s ease;
}

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

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

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

#menu-line-1.open {
    top: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
}

#menu-line-2.open {
    top: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
}

.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

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

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.3s; }

/* ========== SCROLL REVEAL ========== */
.reveal-up,
.reveal-left,
.reveal-right,
.reveal-scale {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-left {
    transform: translateX(-30px);
}

.reveal-right {
    transform: translateX(30px);
}

.reveal-scale {
    transform: scale(0.95);
}

.reveal-up.visible,
.reveal-left.visible,
.reveal-right.visible,
.reveal-scale.visible {
    opacity: 1;
    transform: translateY(0) translateX(0) scale(1);
}

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

.animate-float {
    animation: float 4s ease-in-out infinite;
}

/* ========== HEADER SCROLLED ========== */
#site-header.scrolled {
    background-color: rgba(254, 253, 248, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

#site-header.scrolled .font-display {
    color: #1a1a1a;
}

/* ========== BACK TO TOP ========== */
#back-to-top.visible {
    opacity: 1;
    pointer-events: all;
}

#back-to-top:not(.visible) {
    transform: translateY(10px);
}

/* ========== FORM FOCUS ========== */
input:focus,
textarea:focus {
    box-shadow: 0 0 0 3px rgba(45, 96, 66, 0.1);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .font-display {
        line-height: 1.1;
    }
}