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

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

body {
    background-color: #0d1b2a;
    color: #ffffff;
    font-family: 'Montserrat', 'Helvetica Neue', Arial, sans-serif;
    font-weight: 300;
    line-height: 1.7;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

select option {
    background: #1c344e;
    color: #ffffff;
}

/* ── Animations ── */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-up {
    animation: fadeUp 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

/* ── Scroll Reveal ── */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* Default state for reveal elements is visible (progressive enhancement) */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Navbar ── */
#navbar {
    transition: background-color 0.5s ease, backdrop-filter 0.5s ease, box-shadow 0.5s ease;
}

#navbar.scrolled {
    background-color: rgba(13, 27, 42, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(94, 193, 168, 0.08);
}

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

#mobile-menu.open .mobile-link {
    animation: fadeUp 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

#mobile-menu.open .mobile-link:nth-child(1) { animation-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(2) { animation-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(3) { animation-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(4) { animation-delay: 0.25s; }
#mobile-menu.open .mobile-link:nth-child(5) { animation-delay: 0.3s; }
#mobile-menu.open .mobile-link:nth-child(6) { animation-delay: 0.35s; }

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

#menu-toggle.active .menu-line:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
}

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

/* ── Form Focus Styles ── */
input:focus,
textarea:focus,
select:focus {
    border-bottom-color: #5ec1a8 !important;
}

/* ── Selection ── */
::selection {
    background: rgba(94, 193, 168, 0.3);
    color: #ffffff;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #0d1b2a;
}

::-webkit-scrollbar-thumb {
    background: #1c344e;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #264668;
}

/* ── Utility ── */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}