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

/* ─── Animated gradient background ────────────────────── */
.hero-gradient {
    background:
      radial-gradient(circle at 20% 20%, rgba(91, 133, 255, 0.18) 0%, transparent 45%),
      radial-gradient(circle at 80% 80%, rgba(40, 64, 245, 0.18) 0%, transparent 45%),
      radial-gradient(circle at 50% 50%, rgba(190, 209, 255, 0.10) 0%, transparent 60%),
      linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}
.dark-gradient {
    background:
      radial-gradient(circle at 20% 30%, rgba(59, 95, 255, 0.30) 0%, transparent 45%),
      radial-gradient(circle at 80% 70%, rgba(32, 47, 219, 0.30) 0%, transparent 45%),
      linear-gradient(180deg, #0b1120 0%, #111a2e 100%);
}

/* Subtle grid */
.grid-pattern {
    background-image:
      linear-gradient(rgba(15, 23, 42, 0.05) 1px, transparent 1px),
      linear-gradient(90deg, rgba(15, 23, 42, 0.05) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 75%);
}
.grid-pattern-dark {
    background-image:
      linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

/* ─── Card hover effect ──────────────────────────────── */
.service-card {
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, rgba(91,133,255,0) 0%, rgba(91,133,255,0) 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    pointer-events: none;
    transition: background 0.4s;
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 30px 60px -20px rgba(15, 23, 42, 0.18);
}
.service-card:hover::before {
    background: linear-gradient(135deg, rgba(91,133,255,0.6) 0%, rgba(40,64,245,0.2) 100%);
}
.service-card .icon-wrap {
    transition: all 0.4s ease;
}
.service-card:hover .icon-wrap {
    transform: scale(1.08) rotate(-4deg);
}

/* ─── Marquee logos ──────────────────────────────────── */
.marquee {
    display: flex;
    overflow: hidden;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent);
            mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent);
}
.marquee-track {
    display: flex;
    gap: 4rem;
    animation: scroll 40s linear infinite;
    padding-right: 4rem;
    flex-shrink: 0;
}
@keyframes scroll {
    from { transform: translateX(0); }
    to   { transform: translateX(-100%); }
}

/* ─── Reveal on scroll ───────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Scrollbar ──────────────────────────────────────── */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: #94a3b8; border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: #64748b; }

/* ─── Header on scroll ───────────────────────────────── */
#site-header.scrolled {
    box-shadow: 0 4px 30px -10px rgba(15, 23, 42, 0.1);
}

/* ─── FAQ ────────────────────────────────────────────── */
details > summary {
    list-style: none;
    cursor: pointer;
}
details > summary::-webkit-details-marker { display: none; }
details[open] .faq-icon { transform: rotate(45deg); }
.faq-icon { transition: transform 0.3s ease; }

/* ─── Spinner for form ───────────────────────────────── */
.spinner {
    width: 18px;
    height: 18px;
    border: 2.5px solid rgba(255,255,255,0.4);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Reduce motion ──────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}