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

body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    background-size: cover;
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.logo {
    font-size: 2rem;
    font-weight: bold;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    display: inline-flex;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: #b2c8fa;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 25px;
}

.nav-links a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Main Content */
.main-content {
    margin-top: 100px;
    padding: 2rem 0;
}

.section {
    background: rgba(255, 255, 255, 0.95);

    margin: 2rem 0;
    padding: 3rem 2rem;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transform: translateY(50px);

    animation: fadeInUp 0.8s ease forwards;
    transition: all 0.3s ease;
}

.section:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
}

.section:nth-child(2) {
    animation-delay: 0.2s;
}

.section:nth-child(3) {
    animation-delay: 0.4s;
}

.section:nth-child(4) {
    animation-delay: 0.6s;
}

@keyframes fadeInUp {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.section h2 {
    color: #2c5530;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
    position: relative;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #4CAF50, #8BC34A);
    border-radius: 2px;
}

.section h3 {
    color: #388e3c;
    font-size: 1.5rem;
    margin: 2rem 0 1rem 0;
    position: relative;
    padding-left: 20px;
}

.section h3::before {
    content: '🌱';
    position: absolute;
    left: -10px;
    top: 0;
}

.section p {
    color: #302f2f;
    font-size: 1.1rem;
    margin-bottom: 1rem;
    text-align: justify;
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.example-card {
    background: linear-gradient(135deg, #a8e6cf, #dcedc1);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.example-card p{
    text-align: center;
}

.example-card h6{
    color: #2e7d32;
    font-size: large;
    margin-bottom: 1rem;
    text-align: center;
}

.example-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(45deg);
    transition: all 0.6s ease;
    opacity: 0;
}

.example-card:hover::before {
    left: 100%;
    opacity: 1;
}

.example-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.example-card h4 {
    color: #2e7d32;
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.quiz-btn {
    display: block;
    width: 250px;
    margin: 3rem auto;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.quiz-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: all 0.5s ease;
}

.quiz-btn:hover::before {
    left: 100%;
}

.quiz-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(76, 175, 80, 0.4);
}

.quiz-section {
    display: none;
}

.quiz-container {
    background: linear-gradient(135deg, #667eea, #764ba2, );

    color: white;
    border-radius: 20px;
    padding: 3rem;
    margin: 2rem 0;
}

.question {
    margin-bottom: 2rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.question h3 {
    color: #fff;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.question h3::before {
    content: '❓';
}

.options {
    display: grid;
    gap: 1rem;
    margin-bottom: 1rem;
}

.option {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid transparent;
    padding: 1rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.option:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(10px);
}

.option.selected {
    border-color: #4CAF50;
    background: rgba(76, 175, 80, 0.3);
}

.submit-quiz {
    background: linear-gradient(135deg, #FF6B6B, #FF8E53);
    color: white;
    border: none;
    padding: 1rem 3rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    display: block;
    margin: 2rem auto;
}

.submit-quiz:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(255, 107, 107, 0.4);
}

.certificate {
    display: none;
    background: linear-gradient(135deg, #ffeaa7, #fab1a0);
    border: 5px solid #d63031;
    border-radius: 20px;
    padding: 3rem;
    margin: 2rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.certificate::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: linear-gradient(45deg, #ff6b6b, #feca57, #48dbfb, #ff9ff3);
    z-index: -1;
    border-radius: 25px;
    animation: rotate 4s linear infinite;
}

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.certificate h2 {
    color: #2d3436;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.certificate-content {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    margin: 1rem 0;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.1);
}

.download-btn {
    background: linear-gradient(135deg, #6c5ce7, #a29bfe);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    margin-top: 1rem;
    transition: all 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(108, 92, 231, 0.3);
}

.floating-element {
    position: absolute;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.floating-element:nth-child(1) {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    top: 20%;
    right: 10%;
    animation-delay: 1s;
}

.floating-element:nth-child(3) {
    bottom: 10%;
    left: 20%;
    animation-delay: 2s;
}

.floating-element:nth-child(4) {
    bottom: 20%;
    right: 20%;
    animation-delay: 3s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

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

    .section {
        padding: 2rem 1rem;
        margin: 1rem 0;
    }

    .section h2 {
        font-size: 2rem;
    }

    .examples-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}


.container-empty p {
    text-align: center;
    padding-top: 14.7%;
    padding-bottom: 200px;
    font-size: 80px;
    font-weight: 600;
    color: #fff;
    font-family: sans-serif;
}