:root {
    --primary: #003366;
    --secondary: #009966;
    --accent: #FF6600;
    --light-gray: #CCCCCC;
    --black: #000000;
}
.webinar-announcement {
    padding: 4rem 0;
    background-color: rgba(255, 255, 255, 0.9);
    text-align: center;
}

.webinar-announcement h2 {
    color: #009865;
}

.webinar-details {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.date-time {
    margin-bottom: 2rem;
}

.date {
    font-size: 1.5rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 0.5rem;
}

.time {
    font-size: 1.2rem;
    color: #666;
}

.webinar-details h3 {
    font-size: 1.8rem;
    color: #003466;
    margin-bottom: 1.5rem;
}

.webinar-details .description {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #555;
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-weight: bold;
    text-decoration: none;
    color: #fff;
    background-color: #ff6600;
    border-radius: 5px;
    transition: background-color 0.3s ease;
    margin-bottom: 1.5rem;
}

.cta-button:hover {
    background-color: #e65c00;
}

.highlight {
    font-size: 1.3rem;
    font-weight: bold;
    color: #ff6600;
    margin-top: 1rem;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--black);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.parallax-lines {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 1;
}

.line {
    position: absolute;
    width: 120%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.15;
    left: -10%;
    transform-origin: center;
    transition: transform 0.3s ease-out;
}

.line:nth-child(1) { top: 20%; transform: rotate(-15deg); }
.line:nth-child(2) { top: 40%; transform: rotate(15deg); }
.line:nth-child(3) { top: 60%; transform: rotate(-15deg); }
.line:nth-child(4) { top: 80%; transform: rotate(15deg); }

header {
    background-image: linear-gradient(rgba(0, 51, 102, 0.7), rgba(0, 51, 102, 0.7)),
                      url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    padding: 60px 0 120px;
    text-align: center;
    position: relative;
}

header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to bottom, transparent, rgba(248, 249, 250, 1));
    pointer-events: none;
}

.logo {
    width: 200px;
    height: 200px;
    margin: 0 auto 40px;
    background-image: url('/public/logo_jointadventure.png');
    background-size: cover;
    background-position: center;
    border-radius: 50%;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    animation: fadeInDown 1s ease-out;
}

.brand-title {
    font-family: 'Montserrat';
    font-size: 4.5rem;
    margin-bottom: 20px;
    text-shadow: 2px 4px 8px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out;
}

.brand-title .joint,
.brand-title .venture {
    color: var(--light-gray);
}

.brand-title .ad {
    color: var(--accent);
    font-style: italic;
}

.tagline {
    font-family: 'Raleway';
    font-size: 1.8rem;
    opacity: 0.9;
    text-shadow: 1px 2px 4px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

section {
    padding: 100px 0;
    position: relative;
}

h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.8rem;
    margin-bottom: 50px;
    color: var(--primary);
    text-align: center;
    text-shadow: 2px 3px 4px rgba(0, 0, 0, 0.15);
    animation: fadeIn 1s ease-out;
}

.brand-dna {
    background-color: #f8f9fa;
    position: relative;
    overflow: hidden;
}

.brand-dna .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    max-width: 900px;
}

.dna-content {
    padding: 50px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(0);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.dna-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.dna-content h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--secondary);
    text-shadow: 1px 2px 3px rgba(0, 0, 0, 0.1);
}

.dna-content p {
    font-family: 'Open Sans', sans-serif;
    font-size: 1.2rem;
    color: #444;
    line-height: 1.8;
}

.values {
    background-color: var(--primary);
    color: white;
    position: relative;
}

.values h2 {
    color: white;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.value-item {
    padding: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.value-item:hover {
    transform: translateY(-10px) scale(1.03);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.25);
}

.value-item h3 {
    font-family: 'Poppins';
    font-size: 1.5rem;
    text-shadow: 2px 3px 4px rgba(0, 0, 0, 0.2);
}

.slogan {
    background-color: var(--secondary);
    color: white;
    text-align: center;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.slogan::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to top, transparent, rgba(0, 153, 102, 0.8));
    pointer-events: none;
}

.slogan p {
    font-family: 'Roboto';
    font-size: 2.2rem;
    max-width: 900px;
    margin: 0 auto;
    font-weight: 700;
    text-shadow: 2px 3px 5px rgba(0, 0, 0, 0.2);
    animation: fadeIn 1s ease-out;
}

.hero-challenge {
    height: 500px;
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
                      url('https://images.unsplash.com/photo-1504384308090-c894fdcc538d?w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero-challenge::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to bottom, var(--secondary), transparent);
    pointer-events: none;
}

footer {
    background-color: var(--black);
    color: white;
    padding: 30px 0;
    text-align: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .logo {
        width: 300px;
        height: 300px;
    }

    .brand-title {
        font-size: 3rem;
    }

    .tagline {
        font-size: 1.4rem;
    }

    .slogan p {
        font-size: 1.6rem;
    }

    .dna-content {
        padding: 30px;
    }
}

@media (max-width: 480px) {
    .logo {
        width: 200px;
        height: 200px;
    }

    .brand-title {
        font-size: 2.5rem;
    }

    section {
        padding: 60px 0;
    }

    h2 {
        font-size: 2rem;
    }

    .hero-challenge {
        height: 300px;
    }
}