/* ── Reset & 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(6, 78, 59, 0.2);
    color: #064e3b;
}

/* ── Navbar ── */
.nav-link {
    position: relative;
}

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

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

.nav-link:hover {
    color: #059669;
}

/* Transparent navbar state */
nav:not(.scrolled) .nav-text {
    color: rgba(254, 253, 248, 0.9);
}

nav:not(.scrolled) .nav-link {
    color: rgba(254, 253, 248, 0.7);
}

nav:not(.scrolled) .nav-link:hover {
    color: rgba(254, 253, 248, 1);
}

/* Scrolled navbar state */
nav.scrolled {
    background: rgba(254, 253, 248, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(6, 78, 59, 0.08);
}

nav.scrolled .nav-text {
    color: #064e3b;
}

nav.scrolled .nav-link {
    color: #064e3b;
}

nav.scrolled .nav-link:hover {
    color: #059669;
}

/* ── Mobile Menu ── */
.menu-line {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 1.5px;
    background: #064e3b;
    transition: all 0.3s ease;
}

.menu-line.top { top: 10px; }
.menu-line.middle { top: 15px; }
.menu-line.bottom { top: 20px; }

button[aria-label="Open menu"][aria-expanded="true"] .menu-line.top {
    top: 15px;
    transform: translateX(-50%) rotate(45deg);
}

button[aria-label="Open menu"][aria-expanded="true"] .menu-line.middle {
    opacity: 0;
}

button[aria-label="Open menu"][aria-expanded="true"] .menu-line.bottom {
    top: 15px;
    transform: translateX(-50%) rotate(-45deg);
}

#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: all 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; }

/* ── Tabs ── */
.tab-btn {
    color: rgba(16, 185, 129, 0.6);
}

.tab-btn.active {
    background: #064e3b;
    color: #fefdf8 !important;
}

/* ── Menu Panels ── */
.menu-panel {
    animation: fadeIn 0.4s ease forwards;
}

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

/* ── Scroll Reveal ── */
.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

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

/* ── Form ── */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23047857' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0 center;
    padding-right: 2rem;
}

select option {
    background: #fefdf8;
    color: #064e3b;
}