/* ── 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: #E8644B;
    color: white;
}

/* ── Navbar ── */
#navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

.nav-logo {
    transition: color 0.4s ease;
}

#navbar.scrolled .nav-logo {
    color: #1A1D20;
}

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

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

#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; }

.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease, width 0.3s ease;
}

#menu-toggle.active .menu-line:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

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

#menu-toggle.active .menu-line:nth-child(3) {
    width: 24px;
    transform: translateY(-4px) rotate(-45deg);
}

/* ── Hero Float Cards ── */
@keyframes float-1 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes float-2 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

@keyframes float-3 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes float-4 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-6px); }
}

.float-card-1 { animation: float-1 5s ease-in-out infinite; }
.float-card-2 { animation: float-2 6s ease-in-out infinite 0.5s; }
.float-card-3 { animation: float-3 4.5s ease-in-out infinite 1s; }
.float-card-4 { animation: float-4 5.5s ease-in-out infinite 0.3s; }

/* ── Scroll Dot ── */
@keyframes scroll-dot {
    0% { top: -16px; opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { top: 48px; opacity: 0; }
}

.animate-scroll-dot {
    animation: scroll-dot 2s ease-in-out infinite;
}

/* ── Service Cards ── */
.service-card {
    transition: background 0.3s ease;
}

.service-card:hover {
    background: #FAFAFA;
}

.service-card:hover .service-icon {
    stroke: white;
}

/* ── Project Cards ── */
.project-card {
    transition: transform 0.4s ease;
}

.project-card:hover {
    transform: translateY(-4px);
}

/* ── Fade Up Animation ── */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Scroll Reveal ── */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    .reveal { 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='%235F6267' 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 1rem center;
    padding-right: 2.5rem;
}

select:focus {
    border-color: #E8644B;
}

/* ── Responsive ── */
@media (max-width: 767px) {
    .float-card-1,
    .float-card-2,
    .float-card-3,
    .float-card-4 {
        display: none;
    }
}