*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    padding: 0.75rem 1.5rem;
    background: #34D399;
    color: #050A18;
    font-weight: 600;
    border-radius: 0 0 8px 8px;
    text-decoration: none;
}

.skip-link:focus {
    top: 0;
}

/* ── Typography ── */
.section-label {
    display: inline-block;
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: #6EE7B7;
    font-weight: 500;
    position: relative;
    padding-left: 2.5rem;
}

.section-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1.5rem;
    height: 1px;
    background: #6EE7B7;
}

.section-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 900;
    line-height: 1.1;
    color: #ffffff;
    letter-spacing: -0.02em;
}

/* ── Buttons ── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: #34D399;
    color: #050A18;
    font-weight: 700;
    font-size: 0.95rem;
    border-radius: 9999px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary:hover {
    background: #6EE7B7;
    box-shadow: 0 0 30px rgba(52, 211, 153, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: transparent;
    color: #ffffff;
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 9999px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-secondary:hover {
    border-color: rgba(110, 231, 183, 0.6);
    background: rgba(255, 255, 255, 0.05);
}

/* ── Form ── */
.form-input {
    background: #050A18;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 0.875rem 1rem;
    color: #ffffff;
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.3s ease;
    width: 100%;
}

.form-input::placeholder {
    color: rgba(255, 255, 255, 0.25);
}

.form-input:focus {
    outline: none;
    border-color: rgba(52, 211, 153, 0.5);
    box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.1);
}

.form-input:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

/* ── Service Cards ── */
.service-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.4s ease;
}

.service-card:hover {
    border-color: rgba(52, 211, 153, 0.3);
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* ── Testimonial Cards ── */
.testimonial-card {
    transition: all 0.4s ease;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* ── Header ── */
#site-header {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease;
}

#site-header.scrolled {
    background: rgba(2, 6, 16, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #6EE7B7;
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    color: #6EE7B7;
}

/* ── Mobile Menu ── */
.mobile-menu-overlay {
    transition: opacity 0.3s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-nav-link {
    position: relative;
}

.mobile-nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 1px;
    background: #6EE7B7;
    transition: width 0.3s ease;
}

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

/* ── Hamburger ── */
#menu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.menu-line {
    display: block;
}

#menu-toggle[aria-expanded="true"] .menu-line:first-child {
    transform: rotate(45deg);
    top: 12px;
}

#menu-toggle[aria-expanded="true"] .menu-line:last-child {
    transform: rotate(-45deg);
    top: 12px;
}

/* ── Scroll Animations ── */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    html {
        scroll-behavior: auto;
    }

    .service-card:hover,
    .testimonial-card:hover {
        transform: none;
    }
}

/* ── Success Message ── */
.success-message {
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Scroll to Top ── */
.scroll-to-top {
    transition: opacity 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.scroll-to-top.visible {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

.scroll-to-top:hover {
    box-shadow: 0 0 20px rgba(52, 211, 153, 0.5);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .section-title {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
    }

    .hero h1 {
        font-size: clamp(2.5rem, 10vw, 4rem);
    }
}