* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: all 0.3s ease;
}

:root {
    --primary-color: #e74c3c;
    --secondary-color: #f39c12;
    --accent-color: #f39c12;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --text-dark: #2c3e50;
    --text-light: #ecf0f1;
    --background-dark: #1a1a1a;
    --background-light: #f5f5f5;
    --success-color: #2ecc71;
    --warning-color: #f1c40f;
    --danger-color: #e74c3c;
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-dark: linear-gradient(135deg, var(--dark-color), #1a1a1a);
    --gradient-light: linear-gradient(135deg, var(--light-color), #ffffff);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
}

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

body.dark-mode {
    background-color: var(--background-dark);
    color: var(--text-light);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    padding: 1rem;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.dark-mode .navbar {
    background: rgba(44, 62, 80, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

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

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    padding: 0.5rem 1rem;
}

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

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Controls in Navigation */
.controls {
    display: flex;
    gap: 0.5rem;
    margin-right: 1rem;
}

.control-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 1.2rem;
    cursor: pointer;
    transition: transform 0.3s ease;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.control-btn:hover {
    transform: scale(1.1);
    background: rgba(231, 76, 60, 0.1);
}

.dark-mode .control-btn {
    color: var(--text-light);
}

.dark-mode .control-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

.dark-mode .menu-toggle {
    color: var(--text-light);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-container {
        padding: 0.5rem;
    }

    .nav-right {
        gap: 0.5rem;
    }

    .controls {
        margin-right: 0.5rem;
    }

    .control-btn {
        font-size: 1.1rem;
        width: 30px;
        height: 30px;
    }

    .menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--light-color);
        padding: 1rem;
        flex-direction: column;
        align-items: center;
        box-shadow: var(--shadow-lg);
    }

    .nav-links.active {
        display: flex;
    }

    .dark-mode .nav-links {
        background: var(--dark-color);
    }
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: var(--gradient-dark);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></svg>') repeat;
    animation: rotate 20s linear infinite;
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    font-size: 5rem;
    margin-bottom: 1rem;
    text-shadow: 0 0 20px rgba(231, 76, 60, 0.5);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: pulse 2s infinite;
}

.slogan {
    font-size: 2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.5s backwards;
}

.cta-button {
    display: inline-block;
    padding: 1.5rem 3rem;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.4);
    animation: fadeInUp 1s ease-out 1s backwards;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(231, 76, 60, 0.6);
}

/* Sections */
.section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

/* Dangers Section */
.dangers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.danger-card, .help-card, .stat-item {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.dark-mode .danger-card,
.dark-mode .help-card,
.dark-mode .stat-item {
    background: rgba(26, 26, 26, 0.8);
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

.danger-card::before,
.help-card::before,
.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--gradient-primary);
}

.danger-card:hover,
.help-card:hover,
.stat-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.danger-card i,
.help-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    animation: float 3s ease-in-out infinite;
}

/* Statistics Section */
.stats-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.chart-container {
    background: var(--light-color);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.dark-mode .chart-container {
    background: var(--dark-color);
}

.stats-info {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.stat-item {
    background: var(--light-color);
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.dark-mode .stat-item {
    background: var(--dark-color);
}

.stat-item h3 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* Game Section */
.game-container {
    background: var(--light-color);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.dark-mode .game-container {
    background: var(--dark-color);
}

#gameCanvas {
    width: 100%;
    max-width: 800px;
    height: 400px;
    background: var(--gradient-light);
    border-radius: 10px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
}

.dark-mode #gameCanvas {
    background: var(--gradient-dark);
}

.game-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.game-btn {
    padding: 0.8rem 1.5rem;
    background: var(--gradient-primary);
    color: var(--text-light);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-md);
}

.game-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* Gallery Section */
.gallery-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
}

.gallery-item img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: white;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-caption {
    transform: translateY(0);
}

/* Help Section */
.help-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.help-card {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.dark-mode .help-card {
    background: rgba(26, 26, 26, 0.8);
}

.help-card:hover {
    transform: translateY(-10px) scale(1.02);
}

.help-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.quiz-container {
    background: var(--light-color);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    margin-top: 2rem;
}

.dark-mode .quiz-container {
    background: var(--dark-color);
}

.quiz-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.quiz-options label {
    background: var(--light-color);
    padding: 1rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.dark-mode .quiz-options label {
    background: var(--dark-color);
}

.quiz-options label:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.quiz-options input[type="radio"] {
    margin-right: 0.5rem;
}

/* Contact Section */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 1rem;
    border-radius: 10px;
    font-family: inherit;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.dark-mode .contact-form input,
.dark-mode .contact-form textarea {
    background: var(--dark-color);
    color: var(--text-light);
    border-color: var(--primary-color);
}

.contact-form input:focus,
.contact-form textarea:focus {
    background: rgba(255,255,255,0.2);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.2);
}

.submit-btn {
    padding: 1rem;
    background: var(--gradient-primary);
    color: var(--text-light);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-md);
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background: var(--dark-color);
    color: var(--text-light);
}

/* Mobile Controls */
@media (max-width: 768px) {
    .controls {
        top: 0.5rem;
        right: 0.5rem;
        padding: 0.3rem;
    }

    .control-btn {
        font-size: 1.2rem;
        width: 35px;
        height: 35px;
    }
}

/* Small Mobile Devices */
@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .slogan {
        font-size: 1rem;
    }

    .section h2 {
        font-size: 1.8rem;
    }

    .danger-card i,
    .help-card i {
        font-size: 2rem;
    }

    .stat-item h3 {
        font-size: 1.8rem;
    }

    #gameCanvas {
        height: 250px;
    }
}

/* Landscape Mode */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        height: auto;
        min-height: 100vh;
        padding: 2rem 0;
    }

    .nav-links {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .game-container {
        max-height: 80vh;
        overflow-y: auto;
    }
}

/* High DPI Screens */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .danger-card,
    .help-card,
    .stat-item {
        border-width: 2px;
    }
}

/* Dark Mode Adjustments for Mobile */
@media (max-width: 768px) {
    .dark-mode .nav-links {
        background: var(--dark-color);
    }

    .dark-mode .danger-card,
    .dark-mode .help-card {
        background: rgba(26, 26, 26, 0.9);
    }
}

/* Touch Device Optimizations */
@media (hover: none) {
    .btn:hover,
    .control-btn:hover,
    .nav-links a:hover {
        transform: none;
    }

    .danger-card:hover,
    .help-card:hover {
        transform: none;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section {
    animation: fadeIn 1s ease-out;
}

/* Animation pour les poumons */
@keyframes damage {
    0% { background: rgba(255, 255, 255, 0.1); }
    50% { background: rgba(255, 77, 77, 0.3); }
    100% { background: rgba(255, 255, 255, 0.1); }
}

.damaged {
    animation: damage 1s ease-in-out;
}

.header-controls {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-bottom: 1rem;
}

.theme-toggle, .sound-toggle {
    background: none;
    border: none;
    color: var(--text-dark);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: transform 0.3s ease;
}

.theme-toggle:hover, .sound-toggle:hover {
    transform: scale(1.1);
}

.light-mode .theme-toggle, .light-mode .sound-toggle {
    color: var(--text-light);
}

.progress-bar {
    width: 100%;
    height: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    width: 0%;
    transition: width 0.5s ease;
}

.level-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: bold;
    text-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0.5rem 0;
}

.stat-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.tips-section {
    margin-top: 4rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
}

.tips-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.tip-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease;
}

.tip-card:hover {
    transform: translateY(-5px);
}

.tip-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

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

.social-link {
    color: var(--text-dark);
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.social-link:hover {
    transform: scale(1.2);
    color: var(--primary-color);
}

.light-mode .social-link {
    color: var(--text-light);
}

.message {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 77, 77, 0.9);
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    animation: slideIn 0.5s ease-out;
    z-index: 1000;
}

@keyframes slideIn {
    from {
        transform: translate(-50%, -100%);
        opacity: 0;
    }
    to {
        transform: translate(-50%, 0);
        opacity: 1;
    }
}

.smoke {
    position: absolute;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: smokeRise 2s ease-out forwards;
}

@keyframes smokeRise {
    0% {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) scale(2);
        opacity: 0;
    }
}

.comparison-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    margin-bottom: 2rem;
}

.healthy-lungs-container {
    width: 300px;
    height: 300px;
    position: relative;
}

.healthy .lung {
    background: rgba(144, 238, 144, 0.3);
    border: 2px solid rgba(144, 238, 144, 0.5);
}

.timeline-section {
    margin: 4rem 0;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
}

.timeline {
    position: relative;
    max-width: 1200px;
    margin: 2rem auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background: var(--primary-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-content {
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    position: relative;
    transition: transform 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 25px;
    right: -12px;
    background-color: var(--primary-color);
    border-radius: 50%;
    top: 15px;
    z-index: 1;
}

.timeline-item:nth-child(even)::after {
    left: -12px;
}

.motivation-section {
    margin: 4rem 0;
    padding: 2rem;
}

.motivation-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.motivation-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
}

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

.motivation-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* Animations supplémentaires */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.float {
    animation: float 3s ease-in-out infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .comparison-container {
        flex-direction: column;
    }

    .timeline::after {
        left: 31px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }

    .timeline-item:nth-child(even) {
        left: 0;
    }

    .timeline-item::after {
        left: 18px;
    }

    .timeline-item:nth-child(even)::after {
        left: 18px;
    }
}

/* Effets de survol améliorés */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255,255,255,0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

.btn:focus:not(:active)::after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(20, 20);
        opacity: 0;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light-color);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Loading Screen */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--light-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--primary-color);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

.loading p {
    color: var(--primary-color);
    font-size: 1.2rem;
    font-weight: 600;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Animations */
@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-theme="dark"] {
    --primary-color: #c0392b;
    --secondary-color: #d35400;
    --dark-color: #ecf0f1;
    --light-color: #2c3e50;
    --text-color: #ecf0f1;
    --bg-color: #1a1a1a;
}

[data-theme="dark"] .navbar {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
}

[data-theme="dark"] .danger-card,
[data-theme="dark"] .help-card {
    background: rgba(26, 26, 26, 0.8);
}

/* Animations */
@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Mode sombre amélioré */
[data-theme="dark"] {
    --primary-color: #c0392b;
    --secondary-color: #d35400;
    --dark-color: #ecf0f1;
    --light-color: #2c3e50;
    --text-color: #ecf0f1;
    --bg-color: #1a1a1a;
}

[data-theme="dark"] .navbar {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
}

[data-theme="dark"] .danger-card,
[data-theme="dark"] .help-card {
    background: rgba(26, 26, 26, 0.8);
}

/* Responsive design amélioré */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .slogan {
        font-size: 1.5rem;
    }
    
    .cta-button {
        padding: 1rem 2rem;
    }
    
    .dangers-grid,
    .help-container {
        grid-template-columns: 1fr;
    }
}

/* Scrollbar personnalisée */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light-color);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Effet de particules */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* Effet de survol sur les liens */
.nav-links a {
    position: relative;
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Effet de survol sur les boutons */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255,255,255,0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

.btn:focus:not(:active)::after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(20, 20);
        opacity: 0;
    }
}

.ad-container {
    width: 100%;
    max-width: 1200px;
    margin: 20px auto;
    padding: 10px;
    background: #f5f5f5;
    border-radius: 8px;
    text-align: center;
    min-height: 100px;
}