/* ===== 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 {
    background-color: #0f182e;
    color: #d5dcef;
}

::selection {
    background: rgba(95, 184, 138, 0.3);
    color: #f0f3f9;
}

/* ===== NAVBAR ===== */
#navbar {
    background: transparent;
    transition: background 0.5s ease, box-shadow 0.5s ease, padding 0.5s ease;
}

#navbar.scrolled {
    background: rgba(9, 14, 27, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(95, 184, 138, 0.08);
}

#navbar.scrolled nav {
    padding-top: 1rem;
    padding-bottom: 1rem;
}

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

#mobileMenu.open .mobile-link {
    animation: fadeDown 0.4s ease forwards;
    opacity: 0;
}

#mobileMenu.open .mobile-link:nth-child(1) { animation-delay: 0.1s; }
#mobileMenu.open .mobile-link:nth-child(2) { animation-delay: 0.2s; }
#mobileMenu.open .mobile-link:nth-child(3) { animation-delay: 0.3s; }

@keyframes fadeDown {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
}

.menu-line {
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
    transform-origin: center;
}

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

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

#menuToggle.active .menu-line:nth-child(3) {
    transform: translateY(-3px) rotate(-45deg);
    width: 1.5rem;
}

/* ===== HERO ===== */
.floating-card {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(95, 184, 138, 0.08);
}

@keyframes float1 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-12px) rotate(0.5deg); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-16px) rotate(-0.5deg); }
}

@keyframes float3 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(0.3deg); }
}

.card-1 { animation: float1 6s ease-in-out infinite; }
.card-2 { animation: float2 7s ease-in-out infinite 0.5s; }
.card-3 { animation: float3 5.5s ease-in-out infinite 1s; }

/* ===== DIVIDER ===== */
.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(95, 184, 138, 0.25), transparent);
    margin: 0;
}

/* ===== REVEAL ANIMATIONS ===== */
.reveal-up {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left {
    opacity: 1;
    transform: translateX(0);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-right {
    opacity: 1;
    transform: translateX(0);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* These are progressive enhancement — content is visible by default */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up,
    .reveal-left,
    .reveal-right {
        opacity: 0;
        transform: translateY(30px);
    }

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

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

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

/* ===== FOCUS ===== */
a:focus-visible,
button:focus-visible {
    outline: 2px solid rgba(95, 184, 138, 0.6);
    outline-offset: 4px;
    border-radius: 4px;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #0f182e;
}

::-webkit-scrollbar-thumb {
    background: rgba(95, 184, 138, 0.25);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(95, 184, 138, 0.45);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 767px) {
    .floating-card {
        display: none;
    }
}