:root {
    --primary-color: #ff7e4f;
    --primary-dark: #e56e3f;
    --secondary-color: #8e8e93;
    --light-bg: #f8f8f8;
    --dark-bg: #292929;
    --text-dark: #292929;
    --text-light: #ffffff;
    --border-color: #e6e6e6;
    --success-color: #2ecc71;
    --card-bg: #ffffff;
    --input-bg: #f5f5f5;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--light-bg);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

ul {
    list-style: none;
}

button, .btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(255, 126, 79, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

button:hover, .btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 126, 79, 0.3);
}

/* Header */
header {
    background-color: var(--card-bg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
    border-radius: 0 0 20px 20px;
    margin: 0 auto;
    width: 95%;
    max-width: 1280px;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
}

.logo h1 {
    font-size: 1.8rem;
    color: var(--text-dark);
    font-weight: 700;
}

nav ul {
    display: flex;
    align-items: center;
}

nav ul li {
    margin-left: 2rem;
}

nav ul li a {
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--primary-color);
}

nav ul li a.btn-primary {
    color: var(--text-light);
}

.menu-toggle {
    display: none;
    cursor: pointer;
}

.menu-toggle span {
    font-size: 28px;
}

.menu-toggle.active span {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    padding: 6rem 0 4rem;
    background-color: var(--light-bg);
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.hero-content {
    flex: 1;
}

.hero-content h1 {
    font-size: 2.8rem;
    margin-bottom: 1.2rem;
    line-height: 1.2;
    color: var(--text-dark);
    font-weight: 700;
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--secondary-color);
}

.hero-image {
    flex: 1;
}

.hero-cta {
    display: inline-flex;
    margin-top: 2rem;
    padding: 14px 28px;
    font-size: 1.1rem;
}

.hero-cta span.material-symbols-rounded {
    margin-left: 8px;
}

.coming-soon {
    background-color: var(--card-bg);
    border: none;
    padding: 2rem;
    border-radius: 20px;
    margin-bottom: 0;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease;
}

.coming-soon:hover {
    transform: translateY(-5px);
}

.coming-soon .badge {
    background-color: var(--primary-color);
    color: white;
    padding: 6px 14px;
    border-radius: 30px;
    font-size: 0.875rem;
    font-weight: 500;
    display: inline-block;
    margin-bottom: 0.8rem;
}

.coming-soon p {
    margin-bottom: 0;
    font-size: 1rem;
}

.signup-form {
    display: flex;
    gap: 0.8rem;
    margin-top: 2rem;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background-color: var(--input-bg);
    border-radius: 30px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.input-wrapper:focus-within {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.input-wrapper span.material-symbols-rounded {
    position: absolute;
    left: 15px;
    color: var(--secondary-color);
    font-size: 20px;
}

.input-wrapper input,
.input-wrapper select {
    width: 100%;
    padding: 14px 20px 14px 45px;
    border: none;
    background-color: transparent;
    font-size: 1rem;
    outline: none;
}

.select-wrapper::after {
    content: "";
    position: absolute;
    right: 15px;
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--secondary-color);
    border-bottom: 2px solid var(--secondary-color);
    transform: rotate(45deg);
    pointer-events: none;
}

.signup-form .input-wrapper {
    flex: 1;
}

.signup-form button span.material-symbols-rounded,
.contact-form button span.material-symbols-rounded {
    margin-left: 8px;
    font-size: 18px;
}

.feature-icon span.material-symbols-rounded {
    font-size: 36px;
    color: var(--primary-color);
}

.social-icon span.material-symbols-rounded {
    margin-right: 8px;
    font-size: 20px;
}

/* Features Section */
.features {
    padding: 5rem 0;
    background-color: var(--light-bg);
}

.features h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.2rem;
    color: var(--text-dark);
    font-weight: 600;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--card-bg);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.2rem;
    margin-bottom: 1.2rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-weight: 600;
}

.feature-card p {
    color: var(--secondary-color);
}

/* About Section */
.about {
    padding: 5rem 0;
    background-color: var(--light-bg);
}

.about h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.2rem;
    color: var(--text-dark);
    font-weight: 600;
}

.persona-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.persona-card {
    background-color: var(--card-bg);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease;
}

.persona-card:hover {
    transform: translateY(-8px);
}

.persona-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-weight: 600;
}

.persona-card p {
    color: var(--secondary-color);
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background-color: var(--light-bg);
}

.contact h2 {
    text-align: center;
    margin-bottom: 1rem;
    font-size: 2.2rem;
    color: var(--text-dark);
    font-weight: 600;
}

.contact p {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
    color: var(--secondary-color);
    font-size: 1.1rem;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--card-bg);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

.form-group {
    margin-bottom: 1.5rem;
}

.contact-form input,
.contact-form select {
    width: 100%;
    padding: 14px 20px;
    border: none;
    background-color: var(--input-bg);
    border-radius: 30px;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.contact-form input:focus,
.contact-form select:focus {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.contact-form button {
    width: 100%;
    padding: 14px;
    margin-top: 1rem;
}

/* Footer */
footer {
    background-color: var(--card-bg);
    padding: 4rem 0 2rem;
    border-radius: 20px 20px 0 0;
    margin: 0 auto;
    width: 95%;
    max-width: 1280px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo h2 {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-logo p {
    color: var(--secondary-color);
}

.footer-links h3,
.footer-contact h3 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.footer-links ul li {
    margin-bottom: 0.8rem;
}

.footer-links ul li a {
    color: var(--secondary-color);
    transition: color 0.3s;
}

.footer-links ul li a:hover {
    color: var(--primary-color);
}

.footer-contact p {
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icon svg {
    margin-right: 8px;
    width: 20px;
    height: 20px;
}

.social-icon {
    display: flex;
    align-items: center;
    color: var(--secondary-color);
    transition: color 0.3s;
}

.social-icon:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--secondary-color);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        order: 1;
    }
    
    .hero-cta {
        margin: 2rem auto;
    }
    
    .feature-grid,
    .persona-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .social-icons {
        justify-content: flex-start;
    }

    /* Header mobile optimization */
    header .container {
        flex-direction: row;
        justify-content: space-between;
        padding: 1rem 0;
    }
    
    .logo {
        margin-bottom: 0;
    }
    
    .menu-toggle {
        display: block;
        z-index: 10;
    }
    
    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--card-bg);
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        z-index: 9;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    nav.nav-active {
        right: 0;
    }
    
    nav ul {
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }
    
    nav ul li {
        margin: 1.5rem 0;
    }
    
    /* Hero section mobile optimization */
    .hero {
        padding: 3rem 0 2rem;
    }
    
    .hero-content h1 {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .coming-soon {
        padding: 1.5rem;
    }
    
    /* Features section mobile optimization */
    .feature-card {
        padding: 1.8rem;
    }
    
    /* Form mobile optimization */
    .contact-form {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        width: 95%;
        padding: 0 10px;
    }
    
    nav ul li {
        margin-left: 0.5rem;
        margin-right: 0.5rem;
    }
    
    nav ul li a {
        font-size: 0.9rem;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-image {
        display: none;
    }
    
    .feature-grid,
    .persona-grid {
        gap: 1.5rem;
    }
    
    .feature-card,
    .persona-card {
        padding: 1.5rem;
    }
    
    .feature-card h3,
    .persona-card h3 {
        font-size: 1.1rem;
    }
    
    .feature-card p,
    .persona-card p {
        font-size: 0.9rem;
    }
    
    .contact-form {
        padding: 1.5rem 1rem;
    }
    
    footer {
        padding: 2rem 0 1rem;
    }
}



.inference-diagram-container {
    background-color: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

.inference-diagram {
    display: flex;
    align-items: flex-start; /* Align items to the top */
    justify-content: space-around;
    gap: 1rem; /* Add gap between steps */
}

.diagram-step {
    text-align: center;
    color: var(--text-dark);
    max-width: 150px; /* Max width for each step */
    transition: transform 0.3s ease;
}

.diagram-step:hover {
    transform: translateY(-5px);
}

.step-icon {
    font-size: 40px; /* Slightly smaller icon */
    color: var(--primary-color);
    margin-bottom: 1rem;
    background-color: rgba(255, 126, 79, 0.1);
    border-radius: 50%;
    width: 70px; /* Smaller circle */
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
}

.step-label {
    font-weight: 600; /* Bolder label */
    margin-bottom: 0.5rem;
}

.step-description {
    font-size: 0.875rem;
    color: var(--secondary-color);
    line-height: 1.4;
}

.diagram-arrow {
    font-size: 36px;
    color: var(--secondary-color);
    margin-top: 20px; /* Adjust arrow position */
}

@media (max-width: 992px) {
    .inference-diagram {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }

    .diagram-arrow {
        transform: rotate(90deg);
        margin: 0;
    }
}