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

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

body {
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
}

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

#navbar.scrolled {
    background: rgba(250, 248, 245, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(10, 22, 40, 0.06);
}

.nav-logo-text {
    transition: color 0.3s ease;
}

#navbar.scrolled .nav-logo-text {
    color: #0a1628;
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #3dd9c0;
    transition: width 0.3s ease;
}

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

#navbar.scrolled .nav-link {
    color: rgba(10, 22, 40, 0.7) !important;
}

#navbar.scrolled .nav-link:hover {
    color: #3dd9c0 !important;
}

#navbar.scrolled .nav-cta {
    background: #3dd9c0;
    color: #0a1628;
}

/* ===== Mobile Menu ===== */
.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

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

#mobileMenu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
#mobileMenu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
#mobileMenu.open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
#mobileMenu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
#mobileMenu.open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* Hamburger Animation */
.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#menuBtn.active .menu-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

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

#menuBtn.active .menu-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
    width: 20px;
}

/* ===== Scroll Animations ===== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ===== Hero Section ===== */
#hero {
    position: relative;
}

#hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, #f5f0eb, transparent);
    z-index: 1;
    pointer-events: none;
}

/* ===== Section Dividers ===== */
section {
    position: relative;
}

/* ===== Custom Selection ===== */
::selection {
    background: #3dd9c0;
    color: #0a1628;
}

/* ===== Focus Styles ===== */
:focus-visible {
    outline: 2px solid #3dd9c0;
    outline-offset: 2px;
}

/* ===== Button Hover Effects ===== */
a, button {
    -webkit-tap-highlight-color: transparent;
}

/* ===== Smooth Image Loading ===== */
img {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* ===== Geometric Pattern Overlay ===== */
.section-pattern {
    background-image: radial-gradient(circle, rgba(61, 217, 192, 0.05) 1px, transparent 1px);
    background-size: 24px 24px;
}

/* ===== Card Tilt Effect (subtle) ===== */
.impact-card {
    transform-style: preserve-3d;
    perspective: 1000px;
}

/* ===== Print Styles ===== */
@media print {
    #navbar, #menuBtn, #mobileMenu {
        display: none !important;
    }
    
    body {
        color: #000;
        background: #fff;
    }
    
    section {
        page-break-inside: avoid;
    }
}