/* ── Base & Typography ── */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(61, 168, 130, 0.3);
    color: #e8edf5;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #071020;
}
::-webkit-scrollbar-thumb {
    background: #1f3354;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #2d4a74;
}

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

#navbar.scrolled {
    background: rgba(7, 16, 32, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(197, 208, 232, 0.06);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #3da882;
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    color: #8eddbe !important;
}

/* ── Hero ── */
.hero-bg {
    will-change: transform;
}

.hero-bg img {
    will-change: transform;
}

/* ── Scroll Indicator ── */
.scroll-line-inner {
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0%   { transform: translateY(-100%); opacity: 0; }
    50%  { opacity: 1; }
    100% { transform: translateY(200%); opacity: 0; }
}

/* ── CTA Buttons ── */
.cta-primary {
    box-shadow: 0 4px 24px rgba(61, 168, 130, 0.25);
}

.cta-primary:hover {
    box-shadow: 0 8px 32px rgba(61, 168, 130, 0.4);
    transform: translateY(-2px);
}

.cta-secondary:hover {
    background: rgba(61, 168, 130, 0.08);
    transform: translateY(-2px);
}

/* ── Divider ── */
.divider-line {
    margin: 0;
}

/* ── Menu Cards ── */
.menu-card {
    background: rgba(11, 29, 58, 0.4);
    border: 1px solid rgba(31, 51, 84, 0.6);
    padding: 2rem;
    border-radius: 2px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.menu-card:hover {
    border-color: rgba(61, 168, 130, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ── Experience Cards ── */
.experience-card {
    background: rgba(11, 29, 58, 0.3);
    border: 1px solid rgba(31, 51, 84, 0.4);
    border-radius: 2px;
    padding: 0;
    overflow: hidden;
    transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.experience-card:hover {
    border-color: rgba(61, 168, 130, 0.25);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

/* ── Gallery ── */
.gallery-item {
    position: relative;
    cursor: pointer;
}

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(7, 16, 32, 0);
    transition: background 0.3s ease;
    pointer-events: none;
}

.gallery-item:hover::after {
    background: rgba(7, 16, 32, 0.2);
}

/* ── Reveal Animations ── */
.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 1;
    transform: none;
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-up {
    transform: translateY(0);
}

.reveal-left {
    transform: translateX(0);
}

.reveal-right {
    transform: translateX(0);
}

/* Progressive enhancement — animated on scroll for below-fold content */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up.animated   { opacity: 1; transform: translateY(0); }
    .reveal-left.animated { opacity: 1; transform: translateX(0); }
    .reveal-right.animated { opacity: 1; transform: translateX(0); }

    /* Initial state for animated elements — hidden only if JS runs */
    .reveal-up:not(.animated)   { opacity: 0; transform: translateY(30px); }
    .reveal-left:not(.animated) { opacity: 0; transform: translateX(-30px); }
    .reveal-right:not(.animated) { opacity: 0; transform: translateX(30px); }
}

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

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

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

@keyframes fadeDown {
    from { opacity: 0; transform: translateY(-10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Hamburger animation */
.menu-toggle.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.active .menu-line:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
    width: 24px;
}

/* ── Form Styles ── */
select option {
    background: #0B1D3A;
    color: #c5d0e8;
}

/* ── Responsive ── */
@media (max-width: 767px) {
    .hero-title {
        font-size: 2.5rem;
        line-height: 1.1;
    }

    .cta-primary,
    .cta-secondary {
        width: 100%;
        justify-content: center;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .hero-title {
        font-size: 4rem;
    }
}