/* ==========================================================================
   ANT Consulting — Professional Software Consulting Site
   ========================================================================== */

:root {
    --color-bg: #0a0a0f;
    --color-bg-elevated: #12121a;
    --color-bg-card: #16161f;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-text: #e4e4e7;
    --color-text-muted: #a1a1aa;
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-accent: #8b5cf6;
    --color-success: #22c55e;
    --color-error: #ef4444;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-text: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
    --header-height: 72px;
    --transition: 0.2s ease;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img, svg {
    display: block;
    max-width: 100%;
}

a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: #a5b4fc;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container--narrow {
    max-width: 760px;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    background: var(--color-primary);
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    z-index: 9999;
    font-weight: 600;
}

.skip-link:focus {
    top: 16px;
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: background var(--transition);
}

.site-header.scrolled {
    background: rgba(10, 10, 15, 0.95);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text);
    font-weight: 700;
    font-size: 1.125rem;
    text-decoration: none;
}

.logo:hover {
    color: var(--color-text);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-link {
    display: block;
    padding: 8px 16px;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
}

.nav-link--cta {
    background: var(--gradient-primary);
    color: white !important;
    margin-left: 8px;
}

.nav-link--cta:hover {
    opacity: 0.9;
    background: var(--gradient-primary);
    color: white !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-height) + 60px) 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% -20%, rgba(99, 102, 241, 0.25) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139, 92, 246, 0.12) 0%, transparent 50%);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 20%, transparent 70%);
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 860px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary-light);
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

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

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--color-text-muted);
    max-width: 640px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: transform var(--transition), opacity var(--transition), box-shadow var(--transition);
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
    color: white;
    box-shadow: 0 6px 28px rgba(99, 102, 241, 0.45);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text);
}

.btn-full {
    width: 100%;
}

.btn-loading {
    display: none;
}

.btn.is-loading .btn-text {
    display: none;
}

.btn.is-loading .btn-loading {
    display: inline;
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-primary-light);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--color-text-muted);
    font-size: 1.0625rem;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    position: relative;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.service-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.service-card--featured {
    border-color: rgba(99, 102, 241, 0.4);
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.08) 0%, var(--color-bg-card) 100%);
}

.service-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--gradient-primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 100px;
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.12);
    border-radius: var(--radius-md);
    color: var(--color-primary-light);
    margin-bottom: 20px;
}

.service-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-desc {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    margin-bottom: 20px;
    line-height: 1.65;
}

.service-features {
    list-style: none;
}

.service-features li {
    position: relative;
    padding-left: 20px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
}

/* Products */
.products {
    background: var(--color-bg-elevated);
}

.product-showcase {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
    align-items: center;
    margin-bottom: 120px;
}

.product-showcase:last-child {
    margin-bottom: 0;
}

.product-showcase--reverse .product-screenshots {
    order: 2;
}

.product-showcase--reverse .product-info {
    order: 1;
}

.product-screenshots {
    position: relative;
    min-height: 380px;
}

.product-screenshot--main {
    position: relative;
    z-index: 1;
}

.product-screenshot--secondary {
    position: absolute;
    bottom: -32px;
    right: -24px;
    width: 55%;
    z-index: 2;
}

.product-showcase--reverse .product-screenshot--secondary {
    right: auto;
    left: -24px;
}

.screenshot-frame {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), 0 0 60px rgba(99, 102, 241, 0.08);
    transition: transform var(--transition), box-shadow var(--transition);
}

.screenshot-frame:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), 0 0 80px rgba(99, 102, 241, 0.15);
}

.screenshot-frame img {
    display: block;
    width: 100%;
    height: auto;
    vertical-align: middle;
}

.screenshot-frame--mobile {
    border-radius: var(--radius-xl);
}

.product-badge {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 16px;
}

.product-badge--ai {
    background: rgba(139, 92, 246, 0.15);
    color: #c084fc;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.product-badge--web {
    background: rgba(14, 165, 233, 0.15);
    color: #38bdf8;
    border: 1px solid rgba(14, 165, 233, 0.3);
}

.product-title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.product-tagline {
    font-size: 1.0625rem;
    color: var(--color-primary-light);
    font-weight: 500;
    margin-bottom: 16px;
}

.product-desc {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 24px;
}

.product-features {
    list-style: none;
    margin-bottom: 24px;
}

.product-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

.product-features svg {
    color: var(--color-success);
    flex-shrink: 0;
    margin-top: 2px;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
}

.product-tag {
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* Process */
.process {
    background: var(--color-bg-elevated);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.process-step {
    text-align: center;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: white;
    font-weight: 800;
    font-size: 0.875rem;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
}

.step-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-desc {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* About */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-content p {
    color: var(--color-text-muted);
    margin-bottom: 16px;
    line-height: 1.7;
}

.about-highlights {
    list-style: none;
    margin-top: 24px;
}

.about-highlights li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    font-weight: 500;
}

.about-highlights svg {
    color: var(--color-success);
    flex-shrink: 0;
}

.about-visual {
    position: relative;
    height: 400px;
}

.about-card {
    position: absolute;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px 32px;
    box-shadow: var(--shadow-md);
}

.about-card-label {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.about-card-value {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-card--1 { top: 20px; left: 0; }
.about-card--2 { top: 140px; right: 0; }
.about-card--3 { bottom: 20px; left: 60px; }

/* Testimonials */
.testimonials {
    background: var(--color-bg-elevated);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin: 0;
}

.testimonial-stars {
    color: #fbbf24;
    font-size: 1rem;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.testimonial-card p {
    color: var(--color-text-muted);
    font-style: italic;
    line-height: 1.7;
    margin-bottom: 20px;
}

.testimonial-card footer {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.testimonial-card footer strong {
    font-size: 0.9375rem;
}

.testimonial-card footer span {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
    align-items: start;
}

.contact-info p {
    color: var(--color-text-muted);
    margin-bottom: 32px;
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text-muted);
}

.contact-item svg {
    color: var(--color-primary-light);
    flex-shrink: 0;
}

.contact-item a {
    color: var(--color-text-muted);
}

.contact-item a:hover {
    color: var(--color-primary-light);
}

.contact-form {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-text);
}

.form-group label span {
    color: var(--color-error);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #52525b;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a1a1aa' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.hp-field {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    overflow: hidden;
}

.form-status {
    margin-bottom: 16px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    display: none;
}

.form-status.is-visible {
    display: block;
}

.form-status.is-success {
    background: rgba(34, 197, 94, 0.12);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: var(--color-success);
}

.form-status.is-error {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--color-error);
}

/* Footer */
.site-footer {
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-tagline {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    margin-top: 16px;
    line-height: 1.6;
}

.footer-heading {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 16px;
    color: var(--color-text);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.footer-links a:hover {
    color: var(--color-text);
}

.footer-contact p {
    margin-bottom: 8px;
    font-size: 0.9375rem;
}

.footer-contact a {
    color: var(--color-text-muted);
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    transition: background var(--transition), color var(--transition);
}

.social-links a:hover {
    background: rgba(99, 102, 241, 0.2);
    color: var(--color-primary-light);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    color: var(--color-text-muted);
}

/* Legal pages */
.legal-page h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.legal-updated {
    color: var(--color-text-muted);
    margin-bottom: 40px;
}

.legal-page h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 32px 0 12px;
}

.legal-page p {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
}

/* Chat Widget */
.chat-widget {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
}

.chat-toggle {
    position: relative;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    border: none;
    cursor: pointer;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 24px rgba(99, 102, 241, 0.4);
    transition: transform var(--transition), box-shadow var(--transition);
}

.chat-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 32px rgba(99, 102, 241, 0.5);
}

.chat-icon-close {
    display: none;
}

.chat-widget.is-open .chat-icon-open {
    display: none;
}

.chat-widget.is-open .chat-icon-close {
    display: block;
}

.chat-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 20px;
    height: 20px;
    background: var(--color-error);
    color: white;
    font-size: 0.6875rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s infinite;
}

.chat-widget.is-open .chat-badge,
.chat-widget.has-interacted .chat-badge {
    display: none;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.chat-panel {
    position: absolute;
    bottom: 76px;
    right: 0;
    width: 380px;
    max-height: 520px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px) scale(0.95);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}

.chat-widget.is-open .chat-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.chat-header {
    padding: 16px 20px;
    background: var(--gradient-primary);
    color: white;
}

.chat-header-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-avatar {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-status {
    display: block;
    font-size: 0.75rem;
    opacity: 0.85;
    font-weight: 400;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 280px;
    max-height: 340px;
}

.chat-message {
    display: flex;
}

.chat-message--user {
    justify-content: flex-end;
}

.chat-bubble {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    line-height: 1.5;
}

.chat-message--bot .chat-bubble {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-text);
    border-bottom-left-radius: 4px;
}

.chat-message--user .chat-bubble {
    background: var(--gradient-primary);
    color: white;
    border-bottom-right-radius: 4px;
}

.chat-message--typing .chat-bubble {
    display: flex;
    gap: 4px;
    padding: 14px 18px;
}

.typing-dot {
    width: 6px;
    height: 6px;
    background: var(--color-text-muted);
    border-radius: 50%;
    animation: typingBounce 1.4s infinite;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-6px); }
}

.chat-input-form {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--color-border);
}

.chat-input {
    flex: 1;
    padding: 10px 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
}

.chat-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.chat-send {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition);
}

.chat-send:hover {
    opacity: 0.9;
}

.chat-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Responsive */
@media (max-width: 1024px) {
    .services-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
        max-width: 520px;
        margin: 0 auto;
    }

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

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .product-showcase,
    .product-showcase--reverse {
        grid-template-columns: 1fr;
        gap: 48px;
        margin-bottom: 80px;
    }

    .product-showcase--reverse .product-screenshots,
    .product-showcase--reverse .product-info {
        order: unset;
    }

    .product-screenshot--secondary {
        position: relative;
        bottom: auto;
        right: auto;
        left: auto;
        width: 75%;
        margin: -40px auto 0;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-bg-elevated);
        border-bottom: 1px solid var(--color-border);
        padding: 16px 24px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s;
    }

    .main-nav.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        align-items: stretch;
    }

    .nav-link--cta {
        margin-left: 0;
        text-align: center;
    }

    .nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .hero-stats {
        gap: 32px;
    }

    .process-steps {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .about-visual {
        height: 300px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .chat-panel {
        width: calc(100vw - 32px);
        right: -8px;
    }
}