/* ─── Custom Properties ─── */
:root {
    --color-mint-400: #5EB8A8;
    --color-mint-500: #4AA896;
    --color-mint-600: #3A947E;
    --color-midnight-900: #0A2342;
    --color-midnight-950: #061526;
}

/* ─── Base Typography ─── */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.font-playfair {
    font-family: 'Playfair Display', Georgia, serif;
}

.font-inter {
    font-family: 'Inter', system-ui, sans-serif;
}

/* ─── Scroll Reveal ─── */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
}

@media (prefers-reduced-motion: no-preference) {
    .reveal[data-reveal] {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
}

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

/* ─── Hero Animations ─── */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation-name: fadeInUp;
    animation-duration: 0.8s;
    animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
    animation-fill-mode: both;
}

/* ─── Navbar ─── */
#navbar {
    background: transparent;
}

#navbar.scrolled {
    background: rgba(6, 21, 38, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(94, 184, 168, 0.1);
    box-shadow: 0 1px 40px rgba(0, 0, 0, 0.3);
}

#navbar.scrolled .bar {
    background: #ffffff;
}

/* ─── Mobile Menu ─── */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

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

.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

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

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

/* ─── Mobile Toggle ─── */
#mobile-toggle.active .bar:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
}
#mobile-toggle.active .bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
#mobile-toggle.active .bar:nth-child(3) {
    transform: translateY(-5px) rotate(-45deg);
    width: 1.5rem;
}

/* ─── Selection ─── */
::selection {
    background: rgba(94, 184, 168, 0.3);
    color: #ffffff;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-midnight-950);
}
::-webkit-scrollbar-thumb {
    background: rgba(94, 184, 168, 0.3);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(94, 184, 168, 0.5);
}