/* Premium refresh — ai-voice.co.uk */

:root {
    --section-y: clamp(4rem, 8vw, 7.5rem);
    --hero-bg: #030712;
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

body.has-sticky-cta {
    padding-bottom: 5.5rem;
}

@media (min-width: 768px) {
    body.has-sticky-cta {
        padding-bottom: 0;
    }
}

.site-header.is-scrolled {
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06), 0 8px 24px rgba(2, 6, 23, 0.35);
    background: rgba(15, 23, 42, 0.96);
}

.site-main .section {
    padding: var(--section-y) 0;
}

.hero {
    background: var(--hero-bg);
    position: relative;
    overflow: hidden;
}

.hero-compact {
    position: relative;
    overflow: hidden;
    padding: 3rem 0 3.5rem;
    background: var(--hero-bg);
    color: #fff;
}

.hero-compact .lead {
    color: #cbd5e1;
}

.hero-noise {
    position: absolute;
    inset: 0;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    pointer-events: none;
}

.hero-vignette {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 70% at 50% 40%, transparent 30%, rgba(3, 7, 18, 0.85) 100%);
    pointer-events: none;
}

.showcase-url {
    margin: 0;
    padding: 0.2rem 0.55rem;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.06);
    color: #94a3b8;
    font-size: 0.6875rem;
    font-weight: 600;
}

.showcase-float {
    animation: showcase-float 7s var(--ease-out) infinite;
}

@keyframes showcase-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.hero-stat-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1.25rem 0 0;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    padding: 0.5rem 0.85rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.04);
}

.hero-stat strong {
    color: #fff;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.hero-stat span {
    color: #94a3b8;
    font-size: 0.6875rem;
    font-weight: 600;
}

.btn-primary {
    background: linear-gradient(180deg, #6366f1 0%, var(--color-tertiary) 55%, var(--color-tertiary-hover) 100%);
}

.section-light {
    background: linear-gradient(180deg, var(--brand-tint) 0%, var(--color-surface) 14rem);
}

.pipeline-current .pipeline-dot {
    box-shadow: 0 0 0 4px rgba(var(--brand-rgb), 0.18);
}

/* Mobile nav */
.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.06);
    cursor: pointer;
}

.nav-toggle-bar {
    display: block;
    width: 18px;
    height: 2px;
    margin-inline: auto;
    border-radius: 1px;
    background: #fff;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.nav-overlay {
    position: fixed;
    inset: 0;
    z-index: 45;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(8px);
}

.nav-overlay[hidden] {
    display: none;
}

@media (max-width: 767px) {
    .site-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        z-index: 55;
        display: flex;
        flex-direction: column;
        gap: 0;
        padding: 0.5rem 1rem 1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(16px);
        transform: translateY(-8px);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
    }

    .site-nav.is-open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }

    .site-nav a {
        padding: 0.875rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        font-size: 1rem;
    }

    .header-actions .btn-primary {
        display: none;
    }
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
}

/* Voice demo embed */
.voice-demo-grid {
    display: grid;
    gap: 2rem;
    align-items: center;
}

.voice-demo-hint {
    margin: 0.75rem 0 0;
    color: var(--color-on-surface-variant);
    font-size: 0.8125rem;
}

.showcase-shell-light {
    background: linear-gradient(180deg, #fff 0%, var(--bg-soft) 100%);
    border: 1px solid var(--color-outline);
    box-shadow: var(--shadow-md);
}

.showcase-shell-light .showcase-topbar p,
.showcase-shell-light .chat-label {
    color: var(--muted);
}

.showcase-shell-light .chat-bubble p {
    color: var(--ink);
}

.showcase-shell-light .chat-bubble-visitor {
    background: var(--brand-soft);
    border-color: rgba(var(--brand-rgb), 0.2);
}

.showcase-shell-light .chat-bubble-ai {
    background: #f1f5f9;
    border: 1px solid var(--color-outline);
}

.showcase-shell-compact .showcase-live {
    background: rgba(var(--brand-rgb), 0.12);
    color: var(--brand-ink);
}

@media (min-width: 900px) {
    .voice-demo-grid {
        grid-template-columns: 1fr 1.05fr;
    }
}

/* Bento */
.bento-industry {
    display: grid;
    gap: 1rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.bento-tile {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.5rem;
    border: 1px solid var(--color-outline);
    border-radius: var(--radius-xl);
    background: var(--color-surface-container);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}

.bento-tile:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.bento-tile-featured {
    border-color: rgba(var(--brand-rgb), 0.35);
    box-shadow: 0 0 0 1px rgba(var(--brand-rgb), 0.12), var(--shadow-md);
}

.bento-monogram {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-md);
    background: var(--color-tertiary-container);
    color: var(--brand-on-soft);
    font-size: 0.875rem;
    font-weight: 800;
}

.bento-tile h3 {
    margin: 0;
    font-size: 1.2rem;
}

.bento-tile p {
    flex: 1;
    margin: 0;
    color: var(--color-on-surface-variant);
    font-size: 0.9375rem;
}

.text-link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--color-tertiary);
    font-size: 0.9375rem;
    font-weight: 600;
}

.text-link-arrow::after {
    content: "→";
    transition: transform 0.15s ease;
}

.text-link-arrow:hover::after {
    transform: translateX(3px);
}

.chip-list-links a {
    display: block;
    color: inherit;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.chip-list-links a:hover {
    border-color: rgba(var(--brand-rgb), 0.35);
    background: var(--brand-tint);
}

@media (min-width: 768px) {
    .bento-industry {
        grid-template-columns: repeat(2, 1fr);
    }

    .bento-tile-featured {
        grid-column: span 2;
        grid-row: span 1;
    }
}

@media (min-width: 1024px) {
    .bento-industry {
        grid-template-columns: repeat(3, 1fr);
    }

    .bento-tile-featured {
        grid-column: span 2;
        grid-row: span 2;
    }
}

/* Pricing */
.pricing-teaser-grid {
    display: grid;
    gap: 1rem;
}

.tier-card-compact .tier-price {
    font-size: 2rem;
    font-variant-numeric: tabular-nums;
}

.tier-featured {
    transform: scale(1.02);
    border-color: rgba(var(--brand-rgb), 0.45);
    box-shadow: 0 0 0 1px rgba(var(--brand-rgb), 0.2), 0 24px 48px rgba(var(--brand-rgb), 0.12);
}

@media (min-width: 768px) {
    .pricing-teaser-grid {
        grid-template-columns: repeat(3, 1fr);
        align-items: stretch;
    }
}

.section-cta-band {
    background: var(--hero-bg);
    color: #fff;
}

.section-cta-band .inline-cta-highlight {
    border-color: rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.04);
}

.section-cta-band .inline-cta-title {
    color: #fff;
}

.section-cta-band .inline-cta-text {
    color: #94a3b8;
}

/* Steps timeline */
@media (min-width: 1024px) {
    .steps-grid-timeline {
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }
}

/* FAQ premium */
.faq-item summary {
    list-style: none;
    cursor: pointer;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary h3,
.faq-item .faq-question {
    display: inline;
    margin: 0;
    font-size: 1.05rem;
    font-weight: 600;
}

.faq-item {
    border: 1px solid var(--color-outline);
    border-radius: var(--radius-lg);
    background: var(--color-surface-container);
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
}

.faq-item[open] {
    border-color: rgba(var(--brand-rgb), 0.3);
}

/* Footer premium */
.site-footer {
    background: #020617;
    color: #94a3b8;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.site-footer::before {
    content: "";
    display: block;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(var(--brand-rgb), 0.45), transparent);
    margin-bottom: 2.5rem;
}

.footer-grid {
    display: grid;
    gap: 2rem;
}

.footer-col-title {
    margin: 0 0 0.75rem;
    color: #e2e8f0;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.footer-col-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-col-links a:hover {
    color: #fff;
}

.footer-meta {
    grid-column: 1 / -1;
    margin-top: 0.5rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 1.4fr 1fr 1fr;
    }
}

/* Contact form jewel */
.lead-form {
    padding: 2rem;
    border-radius: calc(var(--radius-xl) + 4px);
    background: #fff;
    box-shadow: var(--shadow-lg);
}

.link-on-dark {
    color: var(--brand-light);
    font-weight: 600;
}

.link-on-dark:hover {
    color: #fff;
}

/* Scroll reveal */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.45s var(--ease-out), transform 0.45s var(--ease-out);
}

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

/* Focus */
:focus-visible {
    outline: 3px solid rgba(var(--brand-rgb), 0.45);
    outline-offset: 2px;
}

/* Sample voice demo section */
.sample-voice-demo {
    border-top: 1px solid var(--color-outline);
    border-bottom: 1px solid var(--color-outline);
    background: var(--brand-tint);
}

.hero-light {
    background: linear-gradient(180deg, var(--brand-tint) 0%, var(--color-surface) 100%);
    color: var(--color-primary);
}

.hero-light .eyebrow {
    background: var(--color-tertiary-container);
    border-color: rgba(var(--brand-rgb), 0.18);
    color: var(--brand-on-soft);
}

.hero-light .lead {
    color: var(--color-on-surface-variant);
}

.sample-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.chip-filter {
    padding: 0.5rem 0.9rem;
    border: 1px solid var(--color-outline);
    border-radius: var(--radius-full);
    background: var(--color-surface-container);
    color: var(--color-primary);
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
}

.chip-filter.is-active,
.chip-filter:hover {
    border-color: rgba(var(--brand-rgb), 0.35);
    background: var(--brand-tint);
    color: var(--brand-ink);
}

@media (prefers-reduced-motion: reduce) {
    .showcase-float {
        animation: none;
    }

    .reveal-on-scroll {
        opacity: 1;
        transform: none;
    }

    .site-nav {
        transition: none;
    }
}