/* AERO UHF — design system (CAEN RFID inspired palette) */

:root {
    /* Brand green (logo / primary identity) */
    --brand: #00a82d;
    --brand-dark: #008f26;
    --brand-050: #e9f7ee;
    /* Action blue (CTAs / feature bands) */
    --primary: #1863dc;
    --primary-dark: #0056a7;
    --primary-050: #eaf1fc;
    /* Neutrals */
    --ink: #14181b;
    --body: #333333;
    --muted: #6b7280;
    --surface: #ffffff;
    --surface-alt: #f4f4f6;
    --border: #e5e7eb;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Ubuntu", ui-sans-serif, system-ui, -apple-system, "Segoe UI",
        Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    color: var(--body);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--ink);
}

/* ---------- Reusable components ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1;
    transition: background-color 0.2s ease, color 0.2s ease,
        border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-brand {
    background: var(--brand);
    color: #fff;
}

.btn-brand:hover {
    background: var(--brand-dark);
}

.btn-outline {
    border: 1.5px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline:hover {
    background: var(--primary-050);
}

.btn-light {
    background: #fff;
    color: var(--primary);
}

.btn-light:hover {
    background: #eef2f7;
}

.btn-ghost-light {
    border: 1.5px solid rgba(255, 255, 255, 0.6);
    color: #fff;
    background: transparent;
}

.btn-ghost-light:hover {
    background: rgba(255, 255, 255, 0.12);
}

.eyebrow {
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--primary);
}

.eyebrow-brand {
    color: var(--brand);
}

/* Blue feature band (CAEN style) */
.band {
    background: var(--primary);
    color: #fff;
}

.band h1,
.band h2,
.band h3 {
    color: #fff;
}

/* Link accents */
.link-primary {
    color: var(--primary);
    font-weight: 600;
}

.link-primary:hover {
    color: var(--primary-dark);
}

/* Nav link underline animation */
.nav-link {
    position: relative;
    color: var(--ink);
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    height: 2px;
    width: 0;
    background: var(--primary);
    transition: width 0.25s ease;
}

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

.nav-link:hover,
.nav-link.is-active {
    color: var(--primary);
}

/* Carousel */
.carousel-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.carousel-slide {
    min-width: 100%;
}

/* Fade / rise on scroll */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Soft product backdrop */
.product-stage {
    background: radial-gradient(120% 120% at 50% 25%,
            #ffffff 0%,
            #f3f5f8 60%,
            #e9edf2 100%);
}

/* Header */
.site-header {
    transition: box-shadow 0.25s ease, background-color 0.25s ease;
}

.site-header.is-scrolled {
    box-shadow: 0 4px 20px -12px rgba(15, 23, 42, 0.25);
}

/* Hide scrollbar for horizontal scrollers */
.no-scrollbar::-webkit-scrollbar {
    display: none;
}

.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}