@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --font-family: 'Inter', sans-serif;
    --background-body: #FFFFFF;
    --text-color-dark: #101828;
    --text-color-light: #667085;
    --primary-color: #444CE7;
    --primary-gradient: linear-gradient(to right, #444CE7, #7C3AED);
    --border-color: #EAECF0;
    --white: #FFFFFF;
    --section-bg: #F9FAFB;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--background-body);
    color: var(--text-color-light);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 32px;
    padding-right: 32px;
}

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

h1, h2, h3, h4, h5, h6 {
    color: var(--text-color-dark);
    font-weight: 600;
}

h1 { font-size: 60px; line-height: 1.2; letter-spacing: -0.02em; }
h2 { font-size: 48px; line-height: 1.2; }
h3 { font-size: 20px; line-height: 1.5; }

/* --- Header --- */
.header {
    padding: 24px 0;
    background-color: var(--white);
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    font-weight: 700;
    font-size: 24px;
    color: var(--text-color-dark);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-color-light);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-actions {
    display: flex;
    gap: 12px;
}

/* --- Buttons --- */
.btn {
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 16px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-secondary {
    background-color: var(--white);
    color: var(--text-color-light);
    border-color: #D0D5DD;
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.05);
}

.btn-secondary:hover {
    background-color: #F9FAFB;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.05);
}

.btn-primary:hover {
    background: #3538b7;
}

/* --- Hero Section --- */
.hero {
    padding: 96px 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 64px;
}

.hero-content .tagline {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 16px;
}

.hero-content h1 {
    margin-bottom: 24px;
}

.hero-content .subtitle {
    font-size: 20px;
    max-width: 550px;
    margin-bottom: 48px;
}

.hero-actions {
    display: flex;
    gap: 12px;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 16px;
}

/* --- Clients Section --- */
.clients {
    padding: 48px 0;
    text-align: center;
}

.clients .heading {
    color: var(--text-color-light);
    font-weight: 500;
    margin-bottom: 24px;
}

.client-logos {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

.client-logos img {
    height: 32px;
    opacity: 0.7;
    filter: grayscale(100%);
    transition: opacity 0.3s, filter 0.3s;
}

.client-logos img:hover {
    opacity: 1;
    filter: grayscale(0%);
}

/* --- Features Section --- */
.how-it-works-section {
    padding: 96px 0;
    background-color: var(--section-bg);
}

.section-header {
    text-align: center;
    max-width: 768px;
    margin: 0 auto 64px;
}

.section-header .tagline {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 12px;
}

.section-header h2 {
    margin-bottom: 20px;
}

.how-it-works-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.how-it-works-card {
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    transition: all 0.3s ease;
}

.how-it-works-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(16, 24, 40, 0.05);
}

.how-it-works-card .card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: #EEF4FF;
    margin-bottom: 24px;
}

.how-it-works-card .card-icon img {
    width: 32px;
    height: 32px;
    filter: invert(34%) sepia(98%) saturate(1499%) hue-rotate(224deg) brightness(94%) contrast(93%);
}

.how-it-works-card h3 {
    margin-bottom: 8px;
}

/* --- CTA Section --- */
.cta-section {
    padding: 96px 0;
    text-align: center;
}

.cta-section h2 {
    margin-bottom: 20px;
}

.cta-section .subtitle {
    font-size: 20px;
    max-width: 768px;
    margin: 0 auto 40px;
}

/* --- Footer --- */
.footer {
    padding: 64px 0;
    background-color: var(--background-body);
    border-top: 1px solid var(--border-color);
    font-size: 16px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(4, 1fr);
    gap: 64px;
}

.footer-about .logo {
    margin-bottom: 24px;
}

.footer-col h4 {
    color: #98A2B3;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

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

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul a {
    color: var(--text-color-light);
    font-weight: 500;
}
.footer-col ul a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    margin-top: 64px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.social-links {
    display: flex;
    gap: 24px;
}

.social-links a img {
    width: 24px;
    height: 24px;
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
    h1 { font-size: 48px; }
    h2 { font-size: 36px; }
    .hero-grid { grid-template-columns: 1fr; gap: 48px; text-align: center; }
    .hero-content .subtitle { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-image { order: -1; }
    .how-it-works-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 768px) {
    .nav-links, .nav-actions .btn-secondary { display: none; }
}

/* Product Page Specific Styles */
#human-in-loop-tabs .tab-button {
    border-bottom-width: 2px;
    border-color: transparent;
    color: #6B7280;
    transition: all 0.3s ease;
    padding: 1rem 1.5rem;
    font-weight: 600;
}

#human-in-loop-tabs .tab-button:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

#human-in-loop-tabs .tab-button.active-tab {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background-color: #F9FAFB;
}

#human-in-loop-tabs .tab-content {
    animation: fadeIn 0.5s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.automates-list li:nth-child(2n) {
    justify-self: end;
}