/* ═══════════════════════════════════════════════════════════
   Nexova — AI Enterprise SaaS Platform
   Design System: Dark mode, glassmorphism, gradient accents
   ═══════════════════════════════════════════════════════════ */

/* — Reset & Base — */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    /* Dark palette */
    --bg-deep: #06060a;
    --bg-surface: #0c0c14;
    --bg-card: rgba(255,255,255,0.03);
    --bg-card-hover: rgba(255,255,255,0.06);
    --bg-elevated: rgba(255,255,255,0.05);

    /* Text */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-faint: #475569;

    /* Brand gradient (blue → purple) */
    --blue-500: #3b82f6;
    --blue-400: #60a5fa;
    --blue-600: #2563eb;
    --purple-500: #8b5cf6;
    --purple-400: #a78bfa;
    --purple-600: #7c3aed;
    --cyan-400: #22d3ee;
    --green-400: #4ade80;

    --gradient-brand: linear-gradient(135deg, var(--blue-500), var(--purple-500));
    --gradient-brand-hover: linear-gradient(135deg, var(--blue-400), var(--purple-400));
    --gradient-subtle: linear-gradient(135deg, rgba(59,130,246,0.12), rgba(139,92,246,0.12));

    /* Borders */
    --border-subtle: rgba(255,255,255,0.06);
    --border-light: rgba(255,255,255,0.1);
    --border-accent: rgba(59,130,246,0.3);

    /* Spacing */
    --section-pad: clamp(5rem, 10vw, 8rem);
    --container-max: 1200px;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-pill: 100px;

    /* Shadows */
    --shadow-glow-blue: 0 0 40px rgba(59,130,246,0.15);
    --shadow-glow-purple: 0 0 40px rgba(139,92,246,0.1);
    --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
    --shadow-elevated: 0 8px 32px rgba(0,0,0,0.4);
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--bg-deep);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* — Buttons — */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-sans);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    text-align: center;
    line-height: 1;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--gradient-brand);
    color: var(--text-primary);
    padding: 0.85rem 2rem;
    border-radius: var(--radius-pill);
    box-shadow: 0 2px 16px rgba(59,130,246,0.3);
}
.btn-primary:hover {
    background: var(--gradient-brand-hover);
    box-shadow: 0 4px 24px rgba(59,130,246,0.45);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    padding: 0.85rem 2rem;
    border-radius: var(--radius-pill);
    border: 1.5px solid var(--border-light);
}
.btn-secondary:hover {
    background: rgba(255,255,255,0.05);
    border-color: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 0.55rem 1.25rem;
    font-size: 0.85rem;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 0.55rem 1.25rem;
    border-radius: var(--radius-pill);
    font-weight: 500;
}
.btn-ghost:hover { color: var(--text-primary); }

/* — Header — */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: all 0.4s ease;
    padding: 1rem 0;
}

header.scrolled {
    background: rgba(6, 6, 10, 0.85);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--border-subtle);
    padding: 0.65rem 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
}

.logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-text .logo-accent {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.25s;
    position: relative;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a.nav-highlight {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Hamburger */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 360px;
    height: 100dvh;
    background: var(--bg-surface);
    z-index: 2000;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -10px 0 40px rgba(0,0,0,0.5);
    border-left: 1px solid var(--border-subtle);
}
.mobile-menu.is-open { right: 0; }

.mobile-menu-inner {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.mobile-menu-close {
    align-self: flex-end;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.5rem;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: 2rem;
}
.mobile-nav a {
    padding: 1rem 0;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-subtle);
    transition: color 0.2s;
}
.mobile-nav a:hover { color: var(--blue-400); }

.mobile-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: auto;
    padding: 1rem;
    background: var(--gradient-brand);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1.05rem;
}

/* — Hero — */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 5rem;
}

/* Ambient glow on hero */
.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 60%;
    height: 80%;
    background: radial-gradient(ellipse, rgba(59,130,246,0.08) 0%, transparent 70%);
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: 10%;
    width: 50%;
    height: 60%;
    background: radial-gradient(ellipse, rgba(139,92,246,0.06) 0%, transparent 70%);
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 10;
}

.hero-content { max-width: 600px; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gradient-subtle);
    border: 1px solid var(--border-accent);
    color: var(--blue-400);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-pill);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    margin-bottom: 2rem;
    animation: fadeInUp 0.7s ease both;
}
.hero-badge .badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green-400);
    animation: pulse-dot 2s ease infinite;
}

.hero h1 {
    font-size: clamp(2.8rem, 6vw, 4.2rem);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.7s 0.1s ease both;
}
.hero h1 .gradient-word {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    color: var(--text-secondary);
    font-size: 1.15rem;
    line-height: 1.7;
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.7s 0.2s ease both;
}

.hero-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    animation: fadeInUp 0.7s 0.3s ease both;
}

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 1.2s 0.4s ease both;
}

.hero-art {
    width: 100%;
    max-width: 560px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-glow-blue), var(--shadow-glow-purple);
    border: 1px solid var(--border-subtle);
}

/* Animated ring behind hero art */
.hero-visual::before {
    content: '';
    position: absolute;
    width: 110%;
    height: 110%;
    border-radius: 50%;
    background: conic-gradient(from 0deg, transparent, rgba(59,130,246,0.1), transparent, rgba(139,92,246,0.1), transparent);
    animation: rotate-slow 20s linear infinite;
    filter: blur(40px);
}

/* — Trust Bar (Logo Strip) — */
.trust-bar {
    padding: 4rem 0;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.trust-label {
    text-align: center;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.trust-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3.5rem;
    flex-wrap: wrap;
}

.trust-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    opacity: 0.5;
    transition: opacity 0.3s;
}
.trust-logo:hover { opacity: 0.8; }
.trust-logo svg { opacity: 0.6; }

/* — Section Headers — */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}
.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--blue-400);
    margin-bottom: 1rem;
}
.section-header h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.15;
    margin-bottom: 1rem;
}
.section-header h2 .gradient-word {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* — Capabilities (Feature Cards) — */
.capabilities {
    padding: var(--section-pad) 0;
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.capability-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}
.capability-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-brand);
    opacity: 0;
    transition: opacity 0.3s;
}
.capability-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow-blue);
}
.capability-card:hover::before { opacity: 1; }

.capability-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-subtle);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    color: var(--blue-400);
}

.capability-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}
.capability-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.65;
    margin-bottom: 1.5rem;
}
.capability-card .learn-more {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--blue-400);
    transition: gap 0.2s;
}
.capability-card:hover .learn-more { gap: 0.6rem; }

/* — Metrics — */
.metrics {
    padding: var(--section-pad) 0;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.metric-item {
    text-align: center;
}
.metric-number {
    font-size: clamp(2.2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
}
.metric-label {
    font-size: 0.88rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* — Transform / Features Section — */
.transform {
    padding: var(--section-pad) 0;
}

.transform-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.transform-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.4s ease;
}
.transform-card:hover {
    border-color: var(--border-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.transform-card-image {
    aspect-ratio: 16/10;
    overflow: hidden;
}
.transform-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.transform-card:hover .transform-card-image img {
    transform: scale(1.05);
}

.transform-card-body {
    padding: 1.5rem;
}
.transform-card-body h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.transform-card-body p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.6;
}

/* — Testimonials — */
.testimonials {
    padding: var(--section-pad) 0;
    border-top: 1px solid var(--border-subtle);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all 0.3s ease;
}
.testimonial-card:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-card);
}

.testimonial-quote {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.author-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.author-info strong {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
}
.author-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* — CTA Section — */
.cta-section {
    padding: var(--section-pad) 0;
}

.cta-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 4rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Gradient border animation */
.cta-card::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    padding: 2px;
    background: conic-gradient(from var(--cta-angle, 0deg), var(--blue-500), var(--purple-500), var(--cyan-400), var(--blue-500));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    animation: rotate-gradient 4s linear infinite;
}

.cta-card h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 800;
    letter-spacing: -0.025em;
    margin-bottom: 1rem;
    position: relative;
}
.cta-card p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 520px;
    margin: 0 auto 2rem auto;
    position: relative;
}
.cta-card .cta-btns {
    display: flex;
    justify-content: center;
    gap: 1rem;
    position: relative;
    flex-wrap: wrap;
}

/* — Footer — */
footer {
    border-top: 1px solid var(--border-subtle);
    padding: 4rem 0 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border-subtle);
}

.footer-brand .logo { margin-bottom: 1rem; }
.footer-brand p {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.6;
    max-width: 280px;
}

.footer-col h4 {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}
.footer-col a {
    display: block;
    color: var(--text-muted);
    font-size: 0.88rem;
    margin-bottom: 0.65rem;
    transition: color 0.2s;
}
.footer-col a:hover { color: var(--text-primary); }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0 2rem 0;
}
.footer-bottom p {
    color: var(--text-faint);
    font-size: 0.8rem;
}

/* — Archo Concept Banner — */
.archo-banner {
    background: rgba(255,255,255,0.02);
    border-top: 1px solid var(--border-subtle);
    padding: 1.25rem 0;
}
.archo-banner-inner {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}
.archo-banner-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--blue-400);
    background: rgba(59,130,246,0.1);
    border: 1px solid rgba(59,130,246,0.25);
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-pill);
    white-space: nowrap;
    flex-shrink: 0;
}
.archo-banner p {
    color: var(--text-muted);
    font-size: 0.82rem;
    flex: 1;
    min-width: 200px;
}
.archo-banner p a {
    color: var(--text-secondary);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 2px;
}
.archo-banner-cta {
    color: var(--blue-400);
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    transition: color 0.2s;
}
.archo-banner-cta:hover { color: var(--text-primary); }

/* — Live Chat Widget — */
.chat-fab {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 900;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-brand);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(59,130,246,0.4);
    transition: all 0.3s ease;
    color: white;
}
.chat-fab:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 28px rgba(59,130,246,0.5);
}
.chat-fab.is-open { display: none; }

.chat-fab svg {
    width: 26px;
    height: 26px;
    transition: transform 0.3s;
}

/* Notification dot */
.chat-fab::after {
    content: '';
    position: absolute;
    top: 2px;
    right: 2px;
    width: 14px;
    height: 14px;
    background: var(--green-400);
    border-radius: 50%;
    border: 3px solid var(--bg-deep);
    animation: pulse-dot 2s ease infinite;
}

/* Chat Panel */
.chat-panel {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 910;
    width: 380px;
    max-height: 520px;
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-elevated), var(--shadow-glow-blue);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    pointer-events: none;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.chat-panel.is-open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: all;
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: rgba(255,255,255,0.03);
    border-bottom: 1px solid var(--border-subtle);
}

.chat-header-info {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.chat-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 800;
    position: relative;
}
.chat-avatar::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 10px;
    height: 10px;
    background: var(--green-400);
    border-radius: 50%;
    border: 2px solid var(--bg-surface);
}

.chat-header-text h4 {
    font-size: 0.88rem;
    font-weight: 700;
}
.chat-header-text span {
    font-size: 0.72rem;
    color: var(--green-400);
    font-weight: 500;
}

.chat-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: all 0.2s;
}
.chat-close:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.05);
}

.chat-messages {
    flex: 1;
    padding: 1.25rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 280px;
}

.chat-message {
    display: flex;
    gap: 0.5rem;
    max-width: 85%;
    animation: fadeInUp 0.3s ease both;
}
.chat-message.bot { align-self: flex-start; }
.chat-message.user { align-self: flex-end; flex-direction: row-reverse; }

.message-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    font-weight: 800;
    flex-shrink: 0;
}
.chat-message.user .message-avatar {
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
}

.message-bubble {
    padding: 0.7rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    line-height: 1.55;
}
.chat-message.bot .message-bubble {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}
.chat-message.user .message-bubble {
    background: var(--gradient-brand);
    color: var(--text-primary);
}

.chat-quick-replies {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}
.quick-reply-btn {
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
    color: var(--blue-400);
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-pill);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font-sans);
}
.quick-reply-btn:hover {
    background: rgba(59,130,246,0.1);
    border-color: var(--border-accent);
}

.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 0.7rem 1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    width: fit-content;
}
.typing-indicator span {
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typing-bounce 1.4s infinite;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

.chat-input-area {
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    gap: 0.5rem;
    align-items: center;
}
.chat-input {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-pill);
    padding: 0.6rem 1rem;
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: var(--font-sans);
    outline: none;
    transition: border-color 0.2s;
}
.chat-input::placeholder { color: var(--text-muted); }
.chat-input:focus { border-color: var(--border-accent); }

.chat-send {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-brand);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.2s;
    flex-shrink: 0;
}
.chat-send:hover { transform: scale(1.05); }
.chat-send svg { width: 16px; height: 16px; }

/* — Animations — */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}
@keyframes rotate-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
@keyframes rotate-gradient {
    from { --cta-angle: 0deg; }
    to { --cta-angle: 360deg; }
}
@keyframes typing-bounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-4px); }
}

@property --cta-angle {
    syntax: '<angle>';
    initial-value: 0deg;
    inherits: false;
}

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* — Grid background pattern — */
.grid-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 30%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 30%, transparent 100%);
}

/* ═══════════════════════════════════════════════════════════
   Responsive Design
   ═══════════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; gap: 3rem; text-align: center; }
    .hero-content { max-width: 100%; }
    .hero-btns { justify-content: center; }
    .hero-visual { max-width: 500px; margin: 0 auto; }

    .capabilities-grid { grid-template-columns: repeat(2, 1fr); }
    .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 2rem 1rem; }
    .transform-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-menu-btn { display: flex; }
    .header-actions .btn { display: none; }

    .hero { min-height: auto; padding: 6rem 0 3rem 0; }
    .hero h1 { font-size: 2.4rem; }
    .hero-btns { flex-direction: row; align-items: center; justify-content: center; gap: 0.75rem; }
    .hero-btns .btn { padding: 0.75rem 1.4rem; font-size: 0.88rem; display: inline-flex; }

    .trust-logos {
        display: flex;
        overflow-x: auto;
        gap: 1.5rem;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap;
    }
    .trust-logos::-webkit-scrollbar { display: none; }
    .trust-logo { font-size: 0.85rem; flex-shrink: 0; }

    /* Capabilities → smooth horizontal scroll with fade edges */
    .capabilities-grid {
        display: flex;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        gap: 1rem;
        padding-bottom: 0.5rem;
        scrollbar-width: none;
        scroll-behavior: smooth;
        touch-action: pan-x;
        mask-image: linear-gradient(to right, transparent, black 1.5rem, black calc(100% - 1.5rem), transparent);
        -webkit-mask-image: linear-gradient(to right, transparent, black 1.5rem, black calc(100% - 1.5rem), transparent);
    }
    .capabilities-grid::-webkit-scrollbar { display: none; }
    .capability-card {
        flex: 0 0 78%;
        padding: 1.5rem;
    }

    .metrics-grid { grid-template-columns: repeat(2, 1fr); }

    /* Transform cards → smooth horizontal scroll with fade edges */
    .transform-grid {
        display: flex;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        gap: 1rem;
        padding-bottom: 0.5rem;
        scrollbar-width: none;
        scroll-behavior: smooth;
        touch-action: pan-x;
        mask-image: linear-gradient(to right, transparent, black 1.5rem, black calc(100% - 1.5rem), transparent);
        -webkit-mask-image: linear-gradient(to right, transparent, black 1.5rem, black calc(100% - 1.5rem), transparent);
    }
    .transform-grid::-webkit-scrollbar { display: none; }
    .transform-card {
        flex: 0 0 76%;
    }

    /* Testimonials → smooth horizontal scroll with fade edges */
    .testimonials-grid {
        display: flex;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        gap: 1rem;
        padding-bottom: 0.5rem;
        scrollbar-width: none;
        scroll-behavior: smooth;
        touch-action: pan-x;
        mask-image: linear-gradient(to right, transparent, black 1.5rem, black calc(100% - 1.5rem), transparent);
        -webkit-mask-image: linear-gradient(to right, transparent, black 1.5rem, black calc(100% - 1.5rem), transparent);
    }
    .testimonials-grid::-webkit-scrollbar { display: none; }
    .testimonial-card {
        flex: 0 0 82%;
    }

    .cta-card { padding: 3rem 1.5rem; }

    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }

    /* Chat responsive */
    .chat-panel {
        width: calc(100vw - 2rem);
        bottom: 1rem;
        right: 1rem;
        max-height: 75vh;
    }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 2rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-btns { flex-direction: column; }
    .hero-btns .btn { width: 100%; }
    .metrics-grid { grid-template-columns: 1fr 1fr; }
    .capability-card { flex: 0 0 85%; padding: 1.25rem; }
    .transform-card { flex: 0 0 85%; }
    .testimonial-card { flex: 0 0 90%; }
    .chat-fab { width: 52px; height: 52px; bottom: 1rem; right: 1rem; }
}