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

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

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(52, 211, 153, 0.2);
    color: #0A1628;
}

/* ── Navbar ── */
.nav-link {
    position: relative;
    color: rgba(10, 22, 40, 0.6);
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #34D399;
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: #0A1628;
}

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

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

#navbar.scrolled .nav-link {
    color: rgba(10, 22, 40, 0.6);
}

#navbar.scrolled .nav-link:hover {
    color: #0A1628;
}

#navbar.scrolled .nav-text-color {
    color: #0A1628;
}

/* ── Mobile Menu ── */
.mobile-menu-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

.mobile-menu-link:hover {
    color: #34D399;
}

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

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

.menu-line {
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

#menu-toggle.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
}

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

#menu-toggle.active .menu-line:nth-child(3) {
    width: 24px;
    transform: rotate(-45deg) translate(3px, -3px);
}

/* ── Hero Lines ── */
.hero-line {
    opacity: 0;
    animation: lineReveal 1s ease forwards;
}

.line-1 { animation-delay: 0.8s; }
.line-2 { animation-delay: 1s; }
.line-3 { animation-delay: 1.2s; }
.line-4 { animation-delay: 1.4s; }

@keyframes lineReveal {
    from { opacity: 0; transform: scaleX(0); transform-origin: left; }
    to { opacity: 1; transform: scaleX(1); transform-origin: left; }
}

/* ── Floating Cards ── */
.floating-card {
    animation: float 6s ease-in-out infinite;
}

.card-1 { animation-delay: 0s; }
.card-2 { animation-delay: -2s; }
.card-3 { animation-delay: -4s; }

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

/* ── Scroll Reveal ── */
.reveal-up {
    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-left {
    opacity: 0;
    transform: translateX(-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-right {
    opacity: 0;
    transform: translateX(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-up.visible,
.reveal-left.visible,
.reveal-right.visible {
    opacity: 1;
    transform: translate(0, 0);
}

/* Stagger children */
.reveal-up:nth-child(2) { transition-delay: 0.1s; }
.reveal-up:nth-child(3) { transition-delay: 0.2s; }
.reveal-up:nth-child(4) { transition-delay: 0.3s; }
.reveal-up:nth-child(5) { transition-delay: 0.4s; }
.reveal-up:nth-child(6) { transition-delay: 0.5s; }

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .reveal-up,
    .reveal-left,
    .reveal-right {
        opacity: 1;
        transform: none;
    }
    
    .floating-card {
        animation: none;
    }
    
    .hero-line {
        opacity: 1;
        transform: none;
    }
}

/* ── Responsive ── */
@media (max-width: 767px) {
    .font-serif {
        font-size: clamp(2rem, 8vw, 3rem);
    }
}