body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Step timeline ── */
.step-line::after {
    content: '';
    position: absolute;
    left: 24px;
    top: 48px;
    bottom: -16px;
    width: 2px;
    background-color: #e2e8f0;
    z-index: 0;
}

.dark .step-line::after {
    background-color: #334155;
}

.step-item:last-child .step-line::after {
    display: none;
}

/* ── Hero animated grid ── */
.hero-grid {
    background-size: 40px 40px;
    background-image:
        linear-gradient(to right, rgba(148, 163, 184, 0.15) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(148, 163, 184, 0.15) 1px, transparent 1px);
    mask-image: radial-gradient(ellipse 70% 50% at 50% 50%, black 20%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 70% 50% at 50% 50%, black 20%, transparent 100%);
    animation: grid-drift 20s linear infinite;
}

@keyframes grid-drift {
    0% { background-position: 0 0; }
    100% { background-position: 40px 40px; }
}

/* ── Scroll reveal ── */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
                transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* stagger children */
.reveal-stagger > .reveal:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger > .reveal:nth-child(2) { transition-delay: 80ms; }
.reveal-stagger > .reveal:nth-child(3) { transition-delay: 160ms; }
.reveal-stagger > .reveal:nth-child(4) { transition-delay: 240ms; }
.reveal-stagger > .reveal:nth-child(5) { transition-delay: 320ms; }
.reveal-stagger > .reveal:nth-child(6) { transition-delay: 400ms; }

/* ── Accordion (mobile sidebar) ── */
.accordion-content {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.35s ease;
}

.accordion-content.accordion-open {
    max-height: none;
}

.accordion-chevron {
    transition: transform 0.3s ease;
}

/* On large screens, always show accordion content */
@media (min-width: 1024px) {
    .accordion-content {
        max-height: none !important;
        overflow: visible;
    }
    .accordion-trigger {
        pointer-events: none;
    }
    .accordion-chevron {
        display: none;
    }
}

/* ── Floating nav ── */
.floating-nav {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* ── Dark mode toggle button ── */
#dark-toggle {
    transition: background-color 0.2s, transform 0.2s;
}

#dark-toggle:hover {
    transform: scale(1.1);
}

/* ── Language dropdown ── */
.lang-dropdown {
    z-index: 60;
}

/* ── Gradient text for hero ── */
.gradient-text {
    background: linear-gradient(135deg, #3b82f6 0%, #10b981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── Print ── */
@media print {
    .floating-nav {
        display: none !important;
    }

    .reveal {
        opacity: 1 !important;
        transform: none !important;
    }

    .accordion-content {
        max-height: none !important;
        overflow: visible !important;
    }

    .accordion-chevron {
        display: none !important;
    }

    body {
        padding-top: 0 !important;
    }
}