/* CSS extrait de signup.php */

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

        :root {
            --primary-color: #ff6b35;
            --secondary-color: #004e92;
            --accent-color: #00d4ff;
            --dark-bg: #0a0a0a;
            --card-bg: rgba(255, 255, 255, 0.05);
            --text-primary: #ffffff;
            --text-secondary: #b0b0b0;
            --gradient-main: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            --success-color: #28a745;
            --error-color: #dc3545;
        }

        body {
            font-family: 'Rajdhani', sans-serif;
            background: var(--dark-bg);
            color: var(--text-primary);
            overflow-x: hidden;
            line-height: 1.6;
            min-height: 100vh;
            opacity: 0;
            transition: opacity 0.5s ease;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            background-attachment: fixed;
        }

        body.loaded {
            opacity: 1;
        }

        /* Background animé */
        .animated-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            background: linear-gradient(-45deg, #000000, #0a0a0a, #1a1a1a, #2a2a2a);
            background-size: 400% 400%;
            animation: gradientShift 15s ease infinite;
        }

        @keyframes gradientShift {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        /* Particules flottantes */
        .particles {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            pointer-events: none;
        }

        .particle {
            position: absolute;
            width: 2px;
            height: 2px;
            background: var(--accent-color);
            border-radius: 50%;
            animation: float 20s infinite linear;
            opacity: 0.6;
        }

        @keyframes float {
            0% {
                transform: translateY(100vh) rotate(0deg);
                opacity: 0;
            }
            10% {
                opacity: 0.6;
            }
            90% {
                opacity: 0.6;
            }
            100% {
                transform: translateY(-100vh) rotate(360deg);
                opacity: 0;
            }
        }

        /* Header moderne */
        .header {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(0, 0, 0, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            padding: 1rem 0;
            transition: all 0.3s ease;
        }

        .header.scrolled {
            background: rgba(0, 0, 0, 0.95);
            padding: 0.5rem 0;
        }

        .nav-container {
            max-width: 1400px;
            margin: 20px auto 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 2rem;
        }

        .logo {
            font-family: 'Orbitron', monospace;
            font-size: 2rem;
            font-weight: 900;
            background: linear-gradient(135deg, #00d4ff 0%, #0f3460 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-decoration: none;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
            align-items: center;
        }

        .nav-link {
            color: var(--text-primary);
            text-decoration: none;
            font-weight: 600;
            position: relative;
            transition: all 0.3s ease;
        }

        .nav-link:hover {
            color: var(--accent-color);
            transform: translateY(-2px);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-color);
            transition: width 0.3s ease;
        }

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

        /* Hero Section Inscription */
        .signup-hero {
            margin-top: 100px;
            text-align: center;
            padding: 3rem 0;
            position: relative;
        }

        .header-gif-container {
            position: relative;
            margin-bottom: 2rem;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        }

        #header-gif {
            width: 100%;
            max-width: 1200px;
            height: 250px;
            object-fit: cover;
            border-radius: 20px;
        }

        .signup-title {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-family: 'Orbitron', monospace;
            font-size: 3rem;
            font-weight: 900;
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
        }

        /* Container principal */
        .main-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 2rem;
            position: relative;
            z-index: 1;
        }

        /* Section formulaire */
        .signup-section {
            background: var(--card-bg);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 2rem;
            margin-bottom: 2rem;
            animation: fadeInUp 0.8s ease;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-title {
            font-family: 'Orbitron', monospace;
            font-size: 2rem;
            margin-bottom: 2rem;
            background: linear-gradient(-45deg, #00d4ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-align: center;
        }

        /* Formulaire */
        .form-container {
            width: 100%;
        }

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

        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1.1rem;
        }

        .form-control {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            background: rgba(0, 0, 0, 0.5);
            color: var(--text-primary);
            font-family: 'Rajdhani', sans-serif;
            font-size: 1rem;
            transition: all 0.3s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
            background: rgba(0, 0, 0, 0.7);
        }

        .input-group {
            position: relative;
            display: flex;
            align-items: stretch;
            width: 100%;
        }

        .input-group .form-control {
            flex: 1;
            border-radius: 8px 0 0 8px;
        }

        .password-toggle {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-left: none;
            border-radius: 0 8px 8px 0;
            color: var(--text-primary);
            padding: 0 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .password-toggle:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        /* Boutons */
        .btn {
            display: inline-block;
            padding: 0.75rem 2rem;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            text-align: center;
            transition: all 0.3s ease;
            cursor: pointer;
            font-family: 'Rajdhani', sans-serif;
            font-size: 1.1rem;
        }

        .btn-primary {
            background: linear-gradient(135deg, #00d4ff 0%, #0f3460 100%);
            color: white;
            width: 100%;
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #00c6ff 0%, #0072ff 100%);
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0, 198, 255, 0.4);
        }

        .btn-link {
            background: transparent;
            color: var(--accent-color);
            text-decoration: underline;
        }

        .btn-link:hover {
            color: #66a3ff;
        }

        /* Messages d'erreur */
        .error-msg {
            background: rgba(220, 53, 69, 0.2);
            border: 1px solid var(--error-color);
            border-radius: 8px;
            padding: 1rem;
            margin-bottom: 1.5rem;
            color: var(--error-color);
            text-align: center;
        }

        .success-msg {
            background: rgba(40, 167, 69, 0.2);
            border: 1px solid var(--success-color);
            border-radius: 8px;
            padding: 1rem;
            margin-bottom: 1.5rem;
            color: var(--success-color);
            text-align: center;
        }

        /* Horloge moderne */
        .digital-clock {
            font-family: 'Orbitron', monospace;
            font-size: 1.2rem;
            color: var(--accent-color);
            background: rgba(0, 0, 0, 0.5);
            padding: 0.5rem 1rem;
            border-radius: 25px;
            border: 1px solid rgba(0, 212, 255, 0.3);
        }

        /* Footer moderne */
        .footer {
            background: rgba(0, 0, 0, 0.9);
            padding: 3rem 0 1rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 5rem;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
            max-width: 1400px;
            margin-left: auto;
            margin-right: auto;
            padding: 0 2rem;
        }

        .footer-section h3 {
            font-family: 'Orbitron', monospace;
            margin-bottom: 1rem;
            color: var(--accent-color);
        }

        .footer-section ul {
            list-style: none;
        }

        .footer-section ul li {
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
        }

        .footer-section ul li img {
            width: 16px;
            height: 16px;
            margin-right: 0.5rem;
        }

        .footer-section ul li a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-section ul li a:hover {
            color: var(--accent-color);
        }

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

        .social-link {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, #00d4ff 0%, #0f3460 100%);
            border-radius: 50%;
            transition: all 0.3s ease;
            color: white;
            text-decoration: none;
        }

        .social-link:hover {
            transform: translateY(-3px) scale(1.1);
            box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            cursor: pointer;
        }

        .mobile-menu span {
            width: 25px;
            height: 3px;
            background: var(--text-primary);
            margin: 3px 0;
            transition: 0.3s;
        }

        /* Mobile responsive */
        @media (max-width: 768px) {
            .mobile-menu {
                display: flex;
            }
            
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: rgba(0, 0, 0, 0.95);
                flex-direction: column;
                padding: 2rem;
                gap: 1rem;
            }

            .nav-menu.active {
                display: flex;
            }
            
            .signup-title {
                font-size: 2rem;
            }
            
            .main-container {
                padding: 1rem;
            }

            #header-gif {
                height: 150px;
            }

            .signup-title {
                font-size: 1.5rem;
            }
            
            .signup-section {
                padding: 1.5rem;
            }
        }

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

        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

           /* Style par défaut (mode clair) */
.notice-warning {
  background-color: #ffe4e1;   /* Fond rose clair */
  border: 1px solid #cc0000;   /* Bordure rouge */
  padding: 15px;
  border-radius: 8px;
  margin: 20px 0;
  font-family: Arial, sans-serif;
  color: #660000;              /* Texte rouge sombre */
}

.notice-warning strong {
  color: #cc0000;
}

/* Adaptation automatique en mode sombre */
@media (prefers-color-scheme: dark) {
  .notice-warning {
    background-color: #330000; /* Fond rouge très sombre */
    border: 1px solid #ff4d4d; /* Bordure rouge vif */
    color: #ffcccc;            /* Texte clair pour contraste */
  }

  .notice-warning strong {
    color: #ff4d4d;            /* Accent en rouge vif */
  }
}