:root {
    --dark-bg: #0a0a0a;
    --accent-color: #00ff9d;
    --text-color: #ffffff;
}

body {
    background-color: var(--dark-bg);
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
}

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 4rem 0;
}

.hero-section-thank-you {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(0,255,157,0.1) 0%, transparent 70%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.accent-text {
    color: var(--accent-color);
}

.feature-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 15px;
    padding: 2rem;
    transition: transform 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.btn-accent {
    background-color: var(--accent-color);
    color: var(--dark-bg);
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn-accent:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(0,255,157,0.3);
}

.floating {
    animation: float 6s ease-in-out infinite;
}

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

.form-control {
    background: rgba(255,255,255,0.05) !important;
    border: 1px solid rgba(255,255,255,0.1) !important;
    color: var(--text-color) !important;
}

.form-control:focus {
    background: rgba(255,255,255,0.1) !important;
    border-color: var(--accent-color) !important;
    color: var(--text-color) !important;
    box-shadow: 0 0 0 0.25rem rgba(0,255,157,0.25) !important;
}

.form-control::placeholder {
    color: rgba(255,255,255,0.5);
}

/* Styles responsifs */
@media (max-width: 991.98px) {
    .hero-section {
        text-align: center;
        padding: 6rem 0;
    }

    .hero-content {
        margin-bottom: 2rem;
    }

    .floating {
        margin-top: 2rem;
    }

    .navbar {
        background-color: rgba(10, 10, 10, 0.95) !important;
        backdrop-filter: blur(10px);
    }

    .navbar-collapse {
        background-color: rgba(10, 10, 10, 0.95);
        padding: 1rem;
        border-radius: 10px;
        margin-top: 1rem;
    }
}

@media (max-width: 767.98px) {
    .hero-section {
        padding: 4rem 0;
    }

    .display-4 {
        font-size: 2.5rem;
    }

    .lead {
        font-size: 1.1rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .captcha-container {
        flex-direction: column;
        gap: 1rem !important;
    }

    .captcha-container img {
        width: 100%;
        max-width: 150px;
        margin: 0 auto;
    }
}

@media (max-width: 575.98px) {
    .hero-section {
        padding: 3rem 0;
    }

    .display-4 {
        font-size: 2rem;
    }

    .btn-accent {
        width: 100%;
        margin-top: 1rem;
    }

    .feature-card {
        margin-bottom: 1rem;
    }

    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

/* Améliorations de l'accessibilité */
@media (prefers-reduced-motion: reduce) {
    .floating {
        animation: none;
    }
    
    .btn-accent:hover {
        transform: none;
    }
    
    .feature-card:hover {
        transform: none;
    }
}