:root {
    --primary: #0066ff;
    --secondary: #00ccff;
    --bg-dark: #0a0a1a;
    --bg-light: #f0f8ff;
    --text-dark: #ffffff;
    --text-light: #333333;
    --nav-dark: rgba(0, 20, 40, 0.9);
    --nav-light: rgba(240, 248, 255, 0.9);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --progress: 0%;
}
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-dark);
    color: var(--text-dark);
    background-image: url('../images/background.jpg'), radial-gradient(#001133 1px, transparent 1px);
    background-size: cover, 50px 50px;
    background-attachment: fixed;
    animation: backgroundMove 60s linear infinite;
    transition: all 0.5s ease;
    min-height: 100vh;
}
@keyframes backgroundMove {
    0% { background-position: 0 0, 0 0; }
    100% { background-position: 1000px 0, 100px 100px; }
}
body.light-mode {
    background-color: var(--bg-light);
    color: var(--text-light);
    background-image: none;
}
nav {
    background: var(--nav-dark);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    transition: all 0.5s ease;
}

body.light-mode nav {
    background: var(--nav-light);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

nav a {
    color: var(--text-dark);
    text-decoration: none;
    padding: 0.5rem 1rem;
    font-size: 1.1rem;
    border-radius: 20px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

body.light-mode nav a {
    color: var(--text-light);
}

nav a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px) scale(1.05);
}

nav a::after {
    content: '';
    position: absolute;
    width: 0%;
    height: 2px;
    background: var(--secondary);
    left: 0;
    bottom: 0;
    transition: width 0.3s;
}

nav a:hover::after {
    width: 100%;
}

nav a.active {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: white;
}


.auth-buttons {
    display: flex;
    gap: 1rem;
    align-items: center;
}
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-left: 1rem;
}

.theme-toggle:hover {
    transform: scale(1.2) rotate(45deg);
    background: rgba(255, 255, 255, 0.4);
}


.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    text-align: center;
}


header {
    padding: 4rem 0;
    animation: fadeIn 1.5s ease-out;
}

h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    transition: all 0.5s ease;
    animation: pulse 3s infinite;
    text-shadow: 0 4px 6px rgba(1, 26, 58, 0.3);
    animation: pulse-glow 2s infinite alternate;
}
@keyframes pulse-glow {
    0% { text-shadow: 0 0 10px var(--primary), 0 0 20px var(--primary), 0 0 30px var(--secondary); }
    100% { text-shadow: 0 0 20px var(--primary), 0 0 40px var(--primary), 0 0 60px var(--secondary); }
}

.subtitle {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--secondary);
    transition: all 0.5s ease;
}

body.light-mode .subtitle {
    color: var(--primary);
}


.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.2rem;
    transition: all 0.3s;
    box-shadow: 0 0 15px rgba(0, 150, 255, 0.5);
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    transform: scale(1.1);
    box-shadow: 0 0 25px rgba(0, 150, 255, 0.8);
}


#planets {
    margin: 3rem 0;
}

.planets-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3rem;
    margin: 3rem auto;
}

.planet {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    cursor: pointer;
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: transform 0.5s, box-shadow 0.5s;
    animation: float 4s ease-in-out infinite;
    box-shadow: 0 0 30px rgba(0, 150, 255, 0.3);
}

.planet:hover {
    transform: scale(1.2) rotate(5deg);
    box-shadow: 0 0 40px rgba(0, 200, 255, 0.7);
}

.planet-info {
    position: absolute;
    bottom: 200px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--nav-dark);
    padding: 1.5rem;
    border-radius: 15px;
    width: 300px;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    z-index: 10;
}

body.light-mode .planet-info {
    background: var(--nav-light);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.planet:hover .planet-info {
    opacity: 1;
    bottom: 210px;
}

.planet-info h3 {
    margin-top: 0;
    color: var(--secondary);
}

body.light-mode .planet-info h3 {
    color: var(--primary);
}
footer {
    margin-top: 4rem;
    padding: 2rem 0;
    color: var(--secondary);
    text-align: center;
    transition: all 0.5s ease;
}

body.light-mode footer {
    color: var(--primary);
}


#contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
    text-align: left;
}


.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}


.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    color: var(--secondary);
    font-size: 1.5rem;
    transition: all 0.3s;
}

body.light-mode .social-links a {
    color: var(--primary);
}

.social-links a:hover {
    transform: translateY(-5px) scale(1.1);
}


.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: var(--secondary);
}

body.light-mode .form-group label {
    color: var(--primary);
}

.form-group input,
.form-group textarea {
    padding: 0.8rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-dark);
    font-size: 1rem;
    transition: all 0.3s;
}

body.light-mode .form-group input,
body.light-mode .form-group textarea {
    border: 1px solid rgba(0, 0, 0, 0.2);
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-light);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(0, 204, 255, 0.3);
}

body.light-mode .form-group input:focus,
body.light-mode .form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.3);
}


.about-section {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 4rem 2rem;
    margin: 3rem 2rem;
    border-radius: 40px;
    position: relative;
    overflow: hidden;
}

.about-section::before,
.about-section::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 60px;
    background: inherit;
    transform: scaleY(0.4);
}

.about-section::before {
    top: -30px;
    border-radius: 50% 50% 0 0;
}

.about-section::after {
    bottom: -30px;
    border-radius: 0 0 50% 50%;
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.about-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.about-section p {
    font-size: 1.2rem;
    line-height: 1.6;
}


.bouton-rapport {
    padding: 0.6rem 1.5rem;
    border-radius: 20px;
    background: rgba(0, 102, 255, 0.2);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
    font-weight: bold;
}

.bouton-rapport:hover {
    background: rgba(0, 102, 255, 0.4);
    transform: translateY(-3px) scale(1.05);
    animation: pulse-bleu 1.5s infinite;
}

.bouton-rapport i {
    font-size: 1rem;
}

.solar-cards {
    padding: 50px 0;
  }
  
  .container1 {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: nowrap;
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
    gap: 20px;
  }
  
  .container1 .card {
    width: 320px;
    margin: 20px;
    padding: 40px 30px;
    background: #0b1a36; 
    border-radius: 20px;
    box-shadow: 0 0 20px rgba(0, 150, 255, 0.3);
    transition: all 0.3s ease;
  }
  
  .container1 .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 0 30px rgba(0, 200, 255, 0.5);
  }
  
  .container1 .card .imgBx {
    text-align: center;
  }
  
  .container1 .card .imgBx img {
    width: 100px;
    height: auto;
    filter: drop-shadow(0 0 10px rgba(0, 150, 255, 0.7));
  }
  
  .container1 .card .contentBx {
    margin-top: 20px;
    text-align: center;
  }
  
  .container1 .card .contentBx h2 {
    font-size: 24px;
    color: #00ccff;
    margin-bottom: 10px;
  }
  
  .container1 .card .contentBx p {
    color: #cbd6f3;
    font-size: 14px;
    line-height: 1.5;
  }
  
  .container1 .card .contentBx a {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 20px;
    border: 1px solid #00ccff;
    border-radius: 30px;
    color: #00ccff;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.3s, color 0.3s;
  }
  
  .container1 .card .contentBx a:hover {
    background: #00ccff;
    color: #020d2b;
  }
  

@keyframes pulse-bleu {
    0% { box-shadow: 0 0 0 0 rgba(0, 102, 255, 0.5); }
    70% { box-shadow: 0 0 0 12px rgba(0, 102, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 102, 255, 0); }
}


@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}


@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
    }
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    .planets-container {
        grid-template-columns: repeat(2, 1fr);
    }
    .planet {
        width: 140px;
        height: 140px;
    }
    .planet-info {
        width: 250px;
    }
    #contact-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .planets-container {
        grid-template-columns: 1fr;
    }
    h1 {
        font-size: 2.2rem;
    }
    .subtitle {
        font-size: 1.2rem;
    }
}
audio {
    display: none;
  }
  
.contact-section {
    padding: 4rem 2rem;
    background: rgba(10, 15, 30, 0.8);
    color: white;
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/space-bg.jpg') center/cover no-repeat;
    opacity: 0.2;
    z-index: -1;
}

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

.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 2rem;
}

.contact-info {
    flex: 1;
    min-width: 300px;
    margin-left: 20px;
}
.contact-form {
    flex: 1;
    min-width: 300px;
    margin-right: 30px;
}
.contact-info ul {
    list-style: none;
    padding: 0;
}

.contact-info li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-links a {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

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

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.8rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 4px;
}

.contact-form textarea {
    resize: vertical;
}

@media (max-width: 768px) {
    .contact-content {
        flex-direction: column;
    }
}