:root {
    --primary-color: #2563eb;
    --accent-color: #3b82f6;
    --text-color: #1f2937;
    --light-bg: #f9fafb;
    --white: #fff;
      --hue-neutral: 200;
  --hue-wrong: 0;
  --hue-correct: 145;
}


body::-webkit-scrollbar {
    display: none;
}

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

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

header {
    background: var(--white);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    padding: 0.75rem 0;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

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

.logo img{

margin-right: 5px;
}

.logo {
    display: flex;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2em;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

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

.hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
}

.hero {
    padding: 4rem 0;
    background: linear-gradient(
        135deg,
        rgba(37, 99, 235, 0.02) 0%,
        rgba(37, 99, 235, 0.08) 100%
    );
}

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

.hero-content {
    flex: 1;
}

.hero-image {
    flex: 1;
}

.hero-image img {
    max-width: 100%;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.hero-image img:hover {
    transform: scale(1.02);
}


.hero.text-center {
    text-align: center;
}

h1 {
    font-size: 2.4rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    line-height: 1.2;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 0.8rem;
    color: var(--text-color);
}

h3 {
    font-size: 1.2rem;
    margin-bottom: 0.6rem;
    color: var(--text-color);
}

.hero p {
    font-size: 1.1rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: 1.5rem;
    font-size: 0.95rem;
}

.btn:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(37, 99, 235, 0.2);
}

.features {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    width: 150px;
    height: 150px;
    margin: 0 auto 1.5rem;
    border-radius: 8px;
    object-fit: cover;
    background: #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.testimonials {
    background: var(--primary-color);
    padding: 4rem 0;
    color: var(--white);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 8px;
}

.testimonial-content {
    font-style: italic;
    margin-bottom: 1rem;
}

.testimonial-author {
    font-weight: 600;
}

.cta {
    padding: 5rem 0;
    text-align: center;
    background: linear-gradient(
        135deg,
        rgba(59, 130, 246, 0.05) 0%,
        rgba(37, 99, 235, 0.08) 100%
    );
}

.cta h2 {
    margin-bottom: 1.5rem;
}

.content-section {
    padding: 4rem 0;
}


.footer-content {
    font-size: 0.9rem;
    margin-top: 0.5rem
}

.faq-item {
    background: var(--white);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.faq-item h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.faq-item p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

footer {
    background: var(--white);
    color: var(--text-color);
    padding: 3rem 0 1.5rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-heading {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.9rem;
}

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

.copyright {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 0.9rem;
    color: #6b7280;
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 65px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        align-items: center;
        padding: 1rem 0;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
        clip-path: circle(0px at top right);
        transition: clip-path 0.5s ease;
    }

    .nav-links.active {
        clip-path: circle(1000px at top right);
    }

    .hero-inner {
        flex-direction: column;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.6rem;
    }

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

}



/* ------------------------------------------------------------- */





.btn-grid {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 10px;
  margin: 20px 0;
}

.btn {
  --hue: var(--hue-neutral);
  border: 1px solid hsl(var(--hue), 100%, 30%);
  background-color: hsl(var(--hue), 100%, 50%);
  border-radius: 5px;
  padding: 5px 10px;
  color: white;
  outline: none;
}

.btn:hover {
  border-color: black;
}

.btn.correct {
  --hue: var(--hue-correct);
  color: black;
}

.btn.wrong {
  --hue: var(--hue-wrong);
}

.start-btn, .next-btn {
  font-size: 1.5rem;
  font-weight: bold;
  padding: 10px 20px;
}

.controls {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hide {
  display: none;
}