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

body {
    overflow-x: hidden;
}

::selection {
    background-color: rgba(94, 234, 212, 0.3);
    color: #0A2342;
}

/* ── Header Scroll State ── */
header.scrolled {
    box-shadow: 0 1px 20px rgba(10, 35, 66, 0.06);
}

/* ── Hero Floating Circles ── */
.hero-circle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.circle-1 {
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(94, 234, 212, 0.12) 0%, transparent 70%);
    top: 5%;
    right: -5%;
    animation: float-slow 8s ease-in-out infinite;
}

.circle-2 {
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, rgba(94, 234, 212, 0.1) 0%, transparent 70%);
    bottom: 15%;
    left: 5%;
    animation: float-slow 10s ease-in-out infinite reverse;
}

.circle-3 {
    width: 160px;
    height: 160px;
    background: radial-gradient(circle, rgba(10, 35, 66, 0.06) 0%, transparent 70%);
    top: 40%;
    right: 35%;
    animation: float-slow 6s ease-in-out infinite;
}

@keyframes float-slow {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-24px) scale(1.03); }
}

/* ── Service Cards ── */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #5EEAD4, #2BB59C);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 3px 3px 0 0;
}

.service-card:hover::before {
    transform: scaleX(1);
}

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

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 35, 66, 0.2) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.4s ease;
    border-radius: inherit;
}

.gallery-item:hover::after {
    opacity: 1;
}

/* ── Scroll Reveal Animations ── */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 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; }

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

.menu-line {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#mobile-menu-btn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

#mobile-menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

#mobile-menu-btn.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
    width: 1.4rem;
    margin-right: 0;
}

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

/* ── 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; }
}

/* ── Focus Visible ── */
:focus-visible {
    outline: 2px solid #5EEAD4;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ── Responsive Tweaks ── */
@media (max-width: 640px) {
    .font-serif { line-height: 1.15; }
}