/* Externalisé depuis welcome.html (durcissement CSP style-src) */
        .welcome-container {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 1rem;
        }

        .welcome-card {
            background: white;
            border-radius: 1rem;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
            padding: 2.5rem;
            max-width: 500px;
            width: 100%;
            text-align: center;
        }

        .welcome-header {
            margin-bottom: 2rem;
        }

        .welcome-header h1 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #1f2937;
            margin-bottom: 0.5rem;
        }

        .welcome-header .subtitle {
            color: #6b7280;
            font-size: 1rem;
        }

        .welcome-options {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 2rem;
        }

        .welcome-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.75rem;
            padding: 1.25rem 1.5rem;
            border-radius: 0.75rem;
            font-size: 1.1rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
        }

        .welcome-btn-primary {
            background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
            color: white;
            box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.4);
        }

        .welcome-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px 0 rgba(59, 130, 246, 0.5);
        }

        .welcome-btn-secondary {
            background: linear-gradient(135deg, #10b981 0%, #059669 100%);
            color: white;
            box-shadow: 0 4px 14px 0 rgba(16, 185, 129, 0.4);
        }

        .welcome-btn-secondary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px 0 rgba(16, 185, 129, 0.5);
        }

        .welcome-btn svg {
            width: 24px;
            height: 24px;
        }

        .welcome-footer {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #e5e7eb;
            color: #9ca3af;
            font-size: 0.875rem;
        }

        .version-info {
            margin-top: 1.5rem;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.75rem;
        }

        .icon-wrapper {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
        }

        .icon-wrapper svg {
            width: 40px;
            height: 40px;
            color: white;
        }