/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { overflow-x: hidden; -webkit-font-smoothing: antialiased; }

/* ── Animations ── */
@keyframes float {
    0%, 100% { transform: translateY(0) rotate(12deg); }
    50% { transform: translateY(-20px) rotate(12deg); }
}
@keyframes float-delayed {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}
@keyframes pulse-delayed {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 0.1; }
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.animate-float { animation: float 6s ease-in-out infinite; }
.animate-float-delayed { animation: float-delayed 5s ease-in-out 1s infinite; }
.animate-pulse { animation: pulse 3s ease-in-out infinite; }
.animate-pulse-delayed { animation: pulse-delayed 4s ease-in-out 0.5s infinite; }

/* ── Scroll Reveal ── */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* ── Navbar ── */
#navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}
#navbar.scrolled {
    background: rgba(27, 67, 50, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: #D4A843;
    transition: width 0.3s ease;
}
.nav-link:hover::after {
    width: 100%;
}

/* ── Mobile Menu ── */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}
.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    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; }

.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}
#menu-btn.active .menu-line:nth-child(1) {
    transform: translateY(3px) rotate(45deg);
}
#menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
}
#menu-btn.active .menu-line:nth-child(3) {
    transform: translateY(-3px) rotate(-45deg);
}

/* ── Service Cards ── */
.service-card {
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease, border-color 0.4s ease;
}
.service-card:hover {
    transform: translateY(-6px);
}

/* ── Buttons ── */
a, button {
    -webkit-tap-highlight-color: transparent;
}

/* ── Form ── */
input:focus, select:focus, textarea:focus {
    box-shadow: 0 0 0 3px rgba(27, 67, 50, 0.1);
}

/* ── Selection ── */
::selection {
    background: rgba(27, 67, 50, 0.15);
    color: #1B4332;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #FAF8F2; }
::-webkit-scrollbar-thumb { background: #8fb88f; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #1B4332; }